on-demand general signal

Abstract

Embodiments provide a base station for a wireless communication network, wherein the base station is configured to serve a cell of the wireless communication network, wherein the base station is configured to transmit access information enabling one or more user equipments to access the cell, wherein the base station is configured to transmit, in an energy saving mode of operation, the access information by transmitting: a first part of the access information; and trigger information enabling a user equipment to trigger transmission of a second part of the access information.

Description

Technical Field

[0001] Embodiments of this application relate to the field of wireless communication, and more specifically, to network power saving. Some embodiments relate to on-demand universal signaling. Background Technology

[0002] Figure 1 schematically illustrates an example of a terrestrial wireless network 100, such as Figure 1A As shown, it includes a core network 102 and one or more radio access networks (RANs) RAN1, RAN2, ... RANN. Figure 1B This is a schematic diagram of an example of a Radio Access Network (RANn), which may include one or more base stations (BSs) gNB1 to gNB5, each serving a specific area around the base station, schematically represented by corresponding cells 1061 to 1065. The base stations are used to provide services to users within the cell. The term "base station" (BS) refers to a next-generation node B (gNB) in a 5G network, an evolved Node B (eNB) in UMTS / LTE / LTE-A / LTE-A Pro, or a common base station in other mobile communication standards. Users can be fixed or mobile devices. The wireless communication system can also be accessed via mobile or fixed Internet of Things (IoT) devices connected to the base station or users. Mobile devices or IoT devices may include physical devices, ground vehicles (such as robots or cars), aerial vehicles (such as manned or unmanned aerial vehicles (UAVs), the latter also known as drones), buildings, and other items or equipment, with built-in electronics, software, sensors, actuators, or similar components, and network connections enabling these devices to collect and exchange data through existing network infrastructure. Figure 1B The diagram shows a configuration with five cells, but RANn may include more or fewer cells, and RANn may also include only one base station. Figure 1B Two users, UE1 and UE2 (also known as user equipment, UE), are shown in cell 1062 and are served by base station gNB2. Another user, UE3, is shown in cell 1064 and is served by base station gNB4. Arrows 1081, 1082, and 1083 schematically represent uplink / downlink connections used to transmit data from users UE1, UE2, and UE3 to base stations gNB2 and gNB4, or vice versa. Furthermore, Figure 1BThe image shows two IoT devices, 1101 and 1102, located in cell 1064. These can be fixed or mobile devices. IoT device 1101 accesses the wireless communication system via base station gNB4 to receive and transmit data, as schematically indicated by arrow 1121. IoT device 1102 accesses the wireless communication system via user UE3, as schematically indicated by arrow 1122. Each base station gNB1 to gNB5 can... Figure 1B The respective backhaul links 1141 to 1145, schematically indicated by arrows pointing to the "core", are connected to the core network 102, for example, via the S1 interface. Figure 1B The core network 102 can connect to one or more external networks. Furthermore, some or all of the base stations gNB1 to gNB5 can be accessed via... Figure 1B The middle arrow pointing to "gNBs" schematically indicates that the respective backhaul links 1161 to 1165 are interconnected, for example, via the S1 or X2 interface, or via the XN interface in the NR. Figure 1B .

[0003] Data transmission may employ a physical resource grid. This physical resource grid may include a set of resource elements (REs) to which various physical channels and physical signals are mapped. For example, physical channels may include physical downlink, uplink, and sidelink shared channels (PDSCH, PUSCH, PSSCH) carrying user-specific data (also known as downlink, uplink, and sidelink payload data); physical broadcast channels (PBCH) carrying, for example, Master Information Blocks (MIBs); physical downlink shared channels (PDSCH) carrying, for example, System Information Blocks (SIBs); and physical downlink, uplink, and sidelink control channels (PDCCH, PUCCH, PSSCH) carrying, for example, downlink control information (DCI), uplink control information (UCI), and sidelink control information (SCI). For the uplink, physical channels (or more precisely, transport channels as defined by 3GPP) may also include physical random access channels (PRACH or RACH) used by the user equipment (UE) for network access once the UE has been synchronized and has acquired the MIB and SIB. Physical signals may include reference signals or symbols (RS), synchronization signals, etc. A resource grid may include a frame or radio frame with a specific duration in the time domain and a given bandwidth in the frequency domain. The frame may include several subframes of predefined lengths (e.g., 1 millisecond). Each subframe may include one or more time slots, each time slot comprising 12 or 14 Orthogonal Frequency Division Multiplexing (OFDM) symbols, depending on the length of the cyclic prefix (CP). All OFDM symbols may be used for downlink (DL) or uplink (UL), or only a portion thereof, such as when using shortened transmission time intervals (sTTI) or mini-slot / non-slotted frame structures that include only a small number of OFDM symbols.

[0004] The wireless communication system can be any single-tone or multi-carrier system employing frequency division multiplexing, such as OFDM, orthogonal frequency division multiple access (OFDMA), or any other IFFT-based signal with or without CP, such as DFT-s-OFDM. Other waveforms can also be used, such as non-orthogonal waveforms for multiple access, such as filter bank multicarrier (FBMC), generalized frequency division multiplexing (GFDM), or universal filtered multicarrier (UFMC). The wireless communication system can operate, for example, in accordance with the LTE-Advanced Pro standard or the NR (5G) New Radio standard.

[0005] The wireless network or communication system shown in Figure 1 can be a heterogeneous network with different overlay networks, such as a network consisting of macro cells, where each macro cell includes a macro base station (e.g., base stations gNB1 to gNB5), and a network consisting of small cell base stations (not shown in Figure 1), such as nanocells or picocell base stations.

[0006] In addition to the aforementioned terrestrial wireless networks, there are also non-terrestrial wireless communication networks, including space transceivers (such as satellites) and / or airborne transceivers (such as unmanned aerial vehicle systems). These non-terrestrial wireless communication networks or systems can operate in a similar manner to the terrestrial systems described in Figure 1, for example, by following the LTE-Advanced Pro standard or the NR (5G) New Radio standard.

[0007] In mobile communication networks, such as those shown in Figure 1, such as LTE or 5G / NR networks, user equipment (UEs) may communicate directly with each other through one or more sidelink (SL) channels, for example, using the PC5 interface. User equipment (UEs) communicating directly with each other via sidelinks may include: vehicle-to-vehicle communication (V2V communication), and vehicle-to-wireless communication with other entities in the wireless communication network (e.g., roadside entities such as traffic lights, traffic signs, or pedestrians) (V2X communication). Other UEs may not be vehicle-related and may include any of the aforementioned devices. Such devices may also communicate directly with each other using SL channels (D2D communication).

[0008] When considering two User Equipments (UEs) communicating directly with each other via a sidelink, these two UEs may be served by the same base station, which can then provide sidelink resource allocation configuration or assistance to the UEs. For example, these two UEs may be within the coverage area of ​​a base station, such as one of the base stations shown in Figure 1. This situation is called the "within coverage" scenario. Another scenario is called the "outside coverage" scenario. It is important to note that "outside coverage" does not mean that the two UEs are not within any of the cells shown in Figure 1, but rather that these UEs... - They may not have established a connection with the base station; for example, they may not be in a Radio Resource Control (RRC) connection state. Therefore, these UEs cannot receive any sidelink resource allocation configuration or auxiliary information from the base station, and / or - They may have been connected to the base station, but for one or more reasons, the base station may not have provided these UEs with sidelink resource allocation configuration or assistance, and / or - It may have been connected to a base station that does not support NR V2X services, such as a GSM, UMTS, or LTE base station.

[0009] When considering two UEs communicating directly with each other via a sidelink (e.g., using a PC5 interface), one of the UEs may also be connected to a base station and can relay information from the base station to the other UE via the sidelink interface. This relay can occur within the same frequency band (in-band relay) or can use other frequency bands (out-of-band relay). In the first case, communication on the Uu link and the sidelink can be decoupled by using different time slots (as in time division duplex (TDD) systems).

[0010] Figure 2 A scenario within a coverage area is schematically depicted, in which two user equipments (UEs) communicating directly with each other are both connected to a base station. The coverage area of ​​the base station gNB is schematically represented by circle 200, which essentially corresponds to the cell schematically represented in Figure 1. The UEs communicating directly with each other include a first vehicle 202 and a second vehicle 204, both located within the coverage area 200 of the base station gNB. Both vehicles 202 and 204 are connected to the base station gNB and are also directly interconnected via the PC5 interface. V2V traffic scheduling and / or interference management are assisted by the gNB through control signaling on the Uu interface (i.e., the radio interface between the base station and the UE). In other words, the gNB provides sidelink resource allocation configuration or assistance to the UE and allocates the necessary resources for V2V communication through the sidelink. This configuration is also referred to as Mode 1 configuration in NR V2X and Mode 3 configuration in LTE V2X.

[0011] Figure 3 The diagram schematically depicts a scenario without coverage, where user equipment (UEs) communicating directly with each other are either not connected to a base station (although they may be physically located within a cell of a wireless communication network), or some or all of the UEs communicating directly with each other are connected to a base station, but the base station does not provide sidelink resource allocation configuration or assistance. The diagram shows three vehicles 206, 208, and 210 communicating directly with each other via a sidelink (e.g., using a PC5 interface). V2V traffic scheduling and / or interference management are based on algorithms implemented between the vehicles. This configuration is also referred to as Mode 2 configuration in NR V2X and Mode 4 configuration in LTE V2X. As mentioned above, Figure 3 The "outside coverage" scenario shown does not necessarily mean that the corresponding Mode 2 UE (in NR) or Mode 4 UE (in LTE) is located outside the base station's coverage area of ​​200. Rather, it means that the corresponding Mode 2 UE (in NR) or Mode 4 UE (in LTE) is not served by the base station, is not connected to a base station within the coverage area, or, although connected to a base station, has not received sidelink resource allocation configuration or assistance from the base station. Therefore, the following situations may exist: Figure 2 Within the coverage area 200 shown, in addition to user equipment 202 and 204 in NR mode 1 or LTE mode 3, there are also user equipment 206, 208 and 210 in NR mode 2 or LTE mode 4.

[0012] Of course, it's also possible that the first vehicle 202 is within the gNB's coverage area, i.e., connected to the gNB via Uu, while the second vehicle 204 is not covered by the gNB and is only connected to the first vehicle 202 via the PC5 interface; or, the second vehicle is connected to the first vehicle 202 via the PC5 interface, but connected to another gNB via Uu. This will be discussed in the context of... Figure 4 and Figure 5 It became clear during the discussion.

[0013] Figure 4 A scenario illustrating two UEs communicating directly with each other is shown, where only one UE is connected to the base station. The coverage area of ​​the base station gNB is schematically represented by circle 200, which essentially corresponds to the cell schematically represented in Figure 1. The user equipment communicating directly with each other includes a first vehicle 202 and a second vehicle 204, where only the first vehicle 202 is located within the coverage area 200 of the base station gNB. The two vehicles 202 and 204 are directly interconnected via a PC5 interface.

[0014] Figure 5 The illustration schematically depicts a scenario where two UEs directly communicate with each other, connected to different base stations. The coverage area of ​​the first base station gNB1 is schematically represented by the first circle 2001, and the coverage area of ​​the second base station gNB2 is schematically represented by the second circle 2002. The user equipments communicating directly with each other include a first vehicle 202 and a second vehicle 204. The first vehicle 202 is located within the coverage area 2001 of the first base station gNB1 and is connected to the first base station gNB1 via a Uu interface; the second vehicle 204 is located within the coverage area 2002 of the second base station gNB2 and is connected to the second base station gNB2 via a Uu interface.

[0015] In order for a User Equipment (UE) to access the network, the UE needs to obtain information about the network. In the 3GPP system, this is called System Information (SI). The network broadcasts SI so that the UE can obtain this information. However, even without traffic load, SI broadcasting consumes a significant amount of power and also incurs significant overhead. To reduce energy consumption, carbon footprint, and operating costs, reducing the power consumption of mobile networks has become a major concern.

[0016] Therefore, it is necessary to improve or optimize the power consumption of gNB caused by transmitting system information.

[0017] It should be noted that the information described above is only for enhancing the understanding of the background of this invention, and therefore may include information that does not constitute prior art and is known to those skilled in the art. Attached Figure Description

[0018] Embodiments of the present invention will be described herein with reference to the accompanying drawings.

[0019] Figure 1 shows a schematic diagram of a wireless communication system; Figure 2 This is a diagram illustrating the coverage area, where user equipment (UEs) that communicate directly with each other are connected to the base station; Figure 3 This is a schematic diagram of a scenario outside the coverage area, in which user equipment (UE) communicating directly with each other does not receive sidelink (SL) resource allocation configuration or assistance from the base station; Figure 4 This illustration depicts a scenario with partial coverage gaps, where some user equipments (UEs) that are communicating directly with each other do not receive sidelink (SL) resource allocation configurations or auxiliary information from the base station. Figure 5 This is a schematic diagram of an in-coverage scenario, where user equipment (UE) that communicates directly with each other is connected to different base stations; Figure 6 This is a schematic diagram of a wireless communication system according to one embodiment, including a transceiver (such as a base station or repeater) and multiple communication devices (such as UEs). Figure 7 This is a schematic diagram of the initial access information transmission, in which the first part of the initial access information is transmitted in the normally open step, and the second part of the initial access information is transmitted in the on-demand step. Figure 8 This is a schematic diagram of the initial access information transmission, wherein the first part of the initial access information is transmitted in the normally open step, trigger information that allows the UE to trigger the transmission of the second part of the initial access information is transmitted in the additional step, and the second part of the initial access information is transmitted in response to receiving the trigger signal in the on-demand step. Figure 9This is a schematic diagram of the initial access information transmission, in which the first part of the initial access information is transmitted in the normally open step, trigger information is transmitted in the additional step (allowing the UE to trigger the transmission of the second part of the initial access information), and the second part of the initial access information is transmitted in response to the received trigger signal in the on-demand step. Figure 10 This is a schematic diagram of the multiplexing mode of access information and trigger information; Figure 11 This is a schematic diagram of the multiplexing mode of access information and trigger information; Figure 12 This is a schematic diagram of the multiplexing mode of access information and trigger information; Figure 13 This is a schematic diagram of the multiplexing mode of access information and trigger information; Figure 14 This is a schematic diagram of the initial access information transmission. In the normally open step, the first part of the initial access information is transmitted; in the additional step, trigger information is transmitted, which allows the user equipment (UE) to trigger the transmission of the second part of the initial access information; and in the on-demand step, in response to the receipt of the trigger signal, the second part of the initial access information is transmitted. Figure 15 This is a schematic diagram of the initial access information transmission, in which the first part of the initial access information is transmitted in the normally open step, trigger information is transmitted in the additional step executed in parallel with the normally open step (this information allows the UE to trigger the transmission of the second part of the initial access information), and the second part of the initial access information is transmitted in response to the receipt of the trigger signal in the on-demand step. Figure 16 This is a schematic diagram of the initial access information transmission, in which trigger information is transmitted in the additional step, enabling the UE to trigger the transmission of the initial access information; and in the on-demand step, the initial access information is transmitted in response to the received trigger signal; Figure 17 This is a schematic diagram of the transmission of initial access information, wherein the first part of the initial access information is transmitted in the normally open step, trigger information is transmitted in the additional step (allowing the UE to trigger the transmission of the second part of the initial access information), and the second part of the initial access information is transmitted in response to receiving the trigger signal in the on-demand step. Figure 18 This is a schematic diagram of the multiplexing mode of access information and trigger information; Figure 19 This is a schematic diagram of the multiplexing mode of access information and trigger information; Figure 20 This is a schematic diagram of the multiplexing mode of access information and trigger information; Figure 21This is a schematic diagram of initial access information transmission, wherein a first part of the initial access information is transmitted in a normally open step; and trigger information is transmitted in an additional step to allow the user equipment (UE) to trigger the transmission of a second part of the initial access information; in a first on-demand step, a first sub-part of the second part of the initial access information is transmitted in response to receiving a first trigger signal; and in a second on-demand step, a second sub-part of the second part of the initial access information is transmitted in response to receiving a second trigger signal. Figure 22 This is a schematic diagram of a wireless communication system, which includes a base station and multiple UEs, one of which acts as a sidelink relay to relay signals between the base station and remote UEs. Figure 23 This is a schematic diagram of a wireless communication system including two base stations and multiple user equipment (UEs), where some user equipment (UEs) act as sidelink relays to relay signals between the base stations and remote user equipment (UEs). Figure 24 This is a schematic diagram of the time pattern for triggering program information transmission; Figure 25 An example of a computer system is shown, in which the units or modules and method steps described in the present invention can be executed. Detailed Implementation

[0020] In the following description, identical or equivalent elements, or elements having the same or equivalent functions, are represented by the same or equivalent reference numerals.

[0021] In the following description, numerous details are set forth to more fully explain embodiments of the invention. However, it will be apparent to those skilled in the art that embodiments of the invention may be practiced without these specific details. In other instances, well-known structures and devices are shown in block diagram form rather than in detail to avoid obscuring embodiments of the invention. Furthermore, unless otherwise specifically stated, features of the different embodiments described below may be combined with each other.

[0022] As mentioned above, in order for a User Equipment (UE) to access the network, the UE needs to obtain information about the network. In the 3GPP system, this is called System Information (SI). The network broadcasts the SI so that the UE can obtain this information. However, even under no traffic load, SI broadcasting still consumes a significant amount of power, and SI broadcasting itself also incurs significant overhead. To reduce energy consumption, reduce carbon footprint, and save operating costs, reducing the power consumption of mobile networks has become a major focus.

[0023] System information is typically broken down into smaller data blocks. In 3G / 4G / 5G, these data blocks are called System Information Blocks (SIBs). The first data block of system information is called the Main Information Block (MIB). In each system, some SIBs are mandatory, while others are optional. Essentially, however, in 3G and 4G, whenever an SIB exists, it is broadcast. Broadcasting can employ a timing scheduling mechanism, where more important messages are sent more frequently, and less important messages are sent less frequently. This reduces overhead and saves energy by avoiding unnecessary and frequent transmission of minor SIBs.

[0024] 5G NR goes a step further in reducing overhead and minimizing SIB broadcast energy consumption: some SIBs can be broadcast on demand. As described in [1], in 5G, SIs are divided into two parts: Minimum System Information (MSI) and other SIs. MSIs are always present and are always broadcast. An MSI is defined as “the minimum SI that includes the basic information required for initial access and the information required to obtain any other SIs.” It consists of two parts: MIB and SIB-1, the latter also known as Residual Minimum System Information (RMSI). Other SIs refer to all SIs that are not part of the MSI. Other SIs may: 1) be broadcast by schedule (e.g., as in 3G / 4G); 2) be sent on demand to user equipment (UE) in the RRC_IDLE / RRC_INACTIVE state triggered by a random access procedure; or 3) be sent via a dedicated RRC message when the UE is in the RRC_CONNECTED state. In all three cases, information on how to access other SIs is provided through the MSI, as shown in [2]. It should also be noted that it cannot be assumed that transmitting other SIs on demand will result in any energy savings. If the UE frequently requests to send other SIs, its energy consumption may actually be higher than that of broadcasting according to a specific schedule.

[0025] As mentioned earlier, network energy saving (NES) is urgent. This need has prompted further exploration of how to reduce energy consumption caused by SI broadcasts. [3] points to several potential directions: on-demand SSB and on-demand SIB-1. The synchronization signal block (SSB) is a block that includes a basic synchronization signal and a MIB. Essentially, the conclusion in [3] suggests that significant energy savings can be achieved under low traffic loads if SSB and SIB-1 are sent only when needed. However, [3] does not define specific implementation methods, and the actual design of on-demand SSB and / or on-demand SIB-1 requires solving a number of practical problems.

[0026] As a significant example of the conceptual gap in current technology, the transmission of MSI (MIB / SIB-1) cannot be triggered as easily as other SIs. As mentioned above, the information that triggers other SIs on demand is carried by the MSI, but the MSI itself does not include a mechanism for identifying how to trigger this information on demand. Only through a novel and more comprehensive solution and related procedures can the practical deployment of on-demand SSB and on-demand SIB-1 be achieved.

[0027] The embodiments described below address the problem of how to send SIs on demand, thereby achieving network energy saving (NES) and / or reducing overhead.

[0028] Embodiments of the present invention can be applied to wireless communication systems or networks as shown in Figures 1 to 5, which include a transceiver (e.g., a base station, gNB, or repeater) and multiple communication devices (e.g., user equipment UE). Figure 6 This is a schematic diagram of a wireless communication system, which includes a transceiver 200 (e.g., a base station) and multiple communication devices 2021 to 2022. n (e.g., UE). User equipment (UE) can communicate directly with each other via a wireless communication link or channel 203 (e.g., a radio link, such as using a PC5 interface (side link)). Additionally, the transceiver and user equipment 202 can communicate via a wireless communication link or channel 204 (e.g., a radio link, such as using a uU interface). Transceiver 200 may include one or more antennas ANT, or an antenna array including multiple antenna elements, signal processor 200a, and transceiver unit 200b. UE 202 may include one or more antennas ANT or an antenna array with multiple antennas, processors 202a1 to 202a. n and transceiver (e.g., receiver and / or transmitter) units 202b1 to 202b n The base station 200 and / or one or more UEs 202 may operate in accordance with the teachings of the present invention as described herein.

[0029] This invention provides a base station for a wireless communication network (e.g., 5G / NR), wherein the base station is configured to serve a cell of the wireless communication network, wherein the base station is configured to transmit (e.g., initial) access information to enable one or more UEs (e.g., initially) to access the cell, wherein the base station is configured to transmit the access information in an energy-saving operating mode by transmitting the following portions: - The first part of the access information [e.g., a first proper subset], and - Trigger information enables the UE to trigger the transmission of the second part of the access information.

[0030] In some embodiments, the base station is configured to transmit access information in an energy-saving operating mode by transmitting the following components: - The second part of the access information [e.g., the second proper subset of the access information], in response to receiving a trigger signal [e.g., a wake-up signal] [e.g., requesting / triggering the transmission of the second part of the access information].

[0031] In some embodiments, a first part and a second part of the access information [e.g., together or in combination] are derived from the access information.

[0032] In some embodiments, access information includes synchronization signals and / or system information.

[0033] In some embodiments, the first part of the access information includes only the first part of the synchronization signal and / or system information, wherein the second part of the access information includes at least the second part of the synchronization signal and / or system information [e.g., not included in the first part of the access information].

[0034] In some embodiments, the access information includes at least two of the following: -Main synchronization signal, - First synchronization signal -Master Message Block (MIB) - A System Information Block 1 (SIB-1). - Another system information block [e.g., SIB-2].

[0035] For example, the first part of the access information includes at least one of the primary synchronization signal, secondary synchronization signal, primary information block (MIB), and system information block one (SIB-1), wherein the second part of the access information includes another of the primary synchronization signal, secondary synchronization signal, primary information block (MIB), and system information block one (SIB-1), and that other item is not included in the first part of the access information. Of course, the first part of the access information may also include only a portion of any one of the primary synchronization signal, secondary synchronization signal, primary information block (MIB), and system information block one (SIB-1) [e.g., (optionally) in addition to other synchronization signals and / or system information], in which case the second part of the access information includes at least the remaining portion of the corresponding synchronization signal or system information.

[0036] In some embodiments, the base station is configured to transmit complete access information in normal operating mode [e.g., transmit a first part of the access information] and [e.g., directly] transmit a second part of the access information [e.g., regardless of whether a trigger signal is received].

[0037] In some embodiments, the first part of the access information includes information indicating whether to transmit trigger information.

[0038] In some embodiments, the base station is configured to transmit first signaling information indicating whether and / or when to transmit a second portion of triggering information and / or access information.

[0039] In some embodiments, the base station is configured to transmit second signaling information indicating whether and / or when the base station will switch between an energy-saving operating mode and a normal operating mode.

[0040] In some embodiments, the base station is configured to receive only random access signals carrying trigger signals in an energy-saving operating mode.

[0041] In some embodiments, the base station is configured to use beamforming technology to transmit trigger information (e.g., TP-info) along multiple beamforming directions.

[0042] In some embodiments, the trigger signal is a wake-up signal transmitted on the same cell as the access information, wherein the trigger information describes the time and / or frequency resources used to transmit the trigger signal.

[0043] In some embodiments, the trigger signal is a wake-up signal transmitted on another cell, different from the access information, wherein the trigger information describes how to access the other cell to transmit the trigger signal.

[0044] In some embodiments, the trigger signal is transmitted on an LTE cell, wherein the trigger information describes the frequency of the LTE cell used to transmit the trigger signal.

[0045] In some embodiments, the trigger signal is transmitted via a side link, wherein the trigger information describes a side link resource pool for transmitting the trigger signal.

[0046] In some embodiments, the second part of the access information includes System Information Block 1 (SIB-1).

[0047] In some embodiments, the triggering information is transmitted through first downlink control information, wherein the second part of the access information includes second downlink control information, and the first downlink control information and the second downlink control information are associated with different Radio Network Temporary Identifiers (RNTIs).

[0048] In some embodiments, the first downlink control information is transmitted on control resource set zero (CORESET#0).

[0049] In some embodiments, the base station is configured to periodically transmit a first portion of access information including System Information Block One (SIB-1) at a first cycle [e.g., regardless of the operating mode], wherein the base station is configured to transmit additional information including trigger information and information describing the first cycle of periodic transmission of the first portion of the access information including System Information Block One (SIB-1), wherein a second portion of the access information also includes System Information Block One (SIB-1), and the base station is configured to, in response to receiving a trigger signal, periodically transmit the second portion of the access information including System Information Block One (SIB-1) at a second cycle shorter than the first cycle.

[0050] In some embodiments, the base station is configured to transmit additional information including trigger information and a portion of System Information Block 1 (SIB-1).

[0051] In some embodiments, this portion of System Information Block 1 (SIB-1) includes at least one of the following: - The first instruction indicating whether the community is off-limits. - A second indication to indicate whether certain user equipment (UE) groups should be considered as barred from accessing the cell. - The third indicator is used to indicate whether IMS emergency calls are supported. - Hash version of the Public Land Mobile Network (PLMN) - Describe information that includes at least one of the following: SSB location, SSB period, TDD mode, time alignment, and offset.

[0052] In some embodiments, the base station is configured to transmit first downlink control information multiplexed with synchronization signal blocks [e.g., PSS and / or SSS].

[0053] In some embodiments, the base station is configured to transmit a first downlink control information and a synchronization signal block in the same time slot.

[0054] In some embodiments, the base station is configured to transmit first downlink control information and synchronization signal blocks on different symbols of the same time slot.

[0055] In some embodiments, the first part of the access information includes a primary synchronization signal block and a secondary synchronization signal block, wherein the second part of the access information includes a primary information block (MIB) and a system information block one (SIB-1), wherein the trigger information is a third-order synchronization signal used to indicate that the second part of the access information is transmitted in response to the trigger signal.

[0056] In some embodiments, the first part of the access information includes a master information block (MIB), and the second part of the access information includes system information block one (SIB-1), wherein the triggering information is included in the master information block (MIB).

[0057] In some embodiments, the trigger information is included in the main information block (MIB) via a K-ssb value.

[0058] In some embodiments, the trigger information is included as a separate indication in the main information block (MIB) [e.g., using a spare bit on the MIB].

[0059] In some embodiments, the Master Information Block (MIB) is an extended Master Information Block that includes at least one bit indicating that an extension of the Master Information Block is transmitted.

[0060] In some embodiments, the triggering information is included in the main information block (MIB) by directly indicating that the transmission of the second part of the access information will be triggered by a trigger signal.

[0061] In some embodiments, the trigger signal is a wake-up signal.

[0062] In some embodiments, the first part of the access information includes a master information block, MIB, wherein the second part of the access information includes system information block one (SIB-1), and the base station is configured to transmit additional information including a portion of system information block one [e.g., SIB-0], wherein the portion of system information block one includes only a part of system information block one, wherein the portion of system information block one [e.g., SIB-0] includes trigger information.

[0063] In some embodiments, this portion of system information block one [e.g., SIB-0] is transmitted via the Physical Downlink Shared Channel (PDSCH).

[0064] In some embodiments, the base station is configured to use beamforming technology to transmit the portion of system information block one along multiple beamforming directions.

[0065] In some embodiments, the base station is configured to transmit a portion of system information block 1 multiplexed with a synchronization signal block [e.g., PSS and / or SSS].

[0066] In some embodiments, the trigger signal is a first trigger signal, wherein the base station is configured to transmit a second portion of access information that is divided into two sub-parts, wherein the base station is configured to transmit a first sub-part of the second portion of the access information in response to receiving the first trigger signal, and wherein the base station is configured to transmit a second sub-part of the second portion of the access information in response to receiving the second trigger signal.

[0067] In some embodiments, the base station is configured to receive a trigger signal via a sidelink relay user equipment.

[0068] In some embodiments, the base station is configured to transmit triggering information via a sidelink relay user equipment (UE).

[0069] In some embodiments, the base station is configured to control the UE of the cell to transmit trigger information when the base station switches to an energy-saving operation mode.

[0070] In some embodiments, the base station is configured to transmit early information about cell inaccessibility and / or System Information Block 1 (SIB-1) availability on demand before transmitting the first part of the access information and / or the trigger information.

[0071] In some embodiments, the base station is configured to transmit triggering information to the UE via direct signaling.

[0072] In some embodiments, the base station is configured to transmit trigger information via direct signaling before switching to an energy-saving operating mode.

[0073] In some embodiments, the base station is configured to switch to an energy-saving operating mode based on operating conditions.

[0074] In some embodiments, the operating conditions are at least one of the following: - Base station load - Radio resource control status of the UE connected to the base station - Receive control signals from the main cell to control the base station to enter energy-saving operation mode.

[0075] In some embodiments, the trigger signal is one of the following options: -Wake-up signal - Cell wake-up signals on the same frequency band / cell - Cell wake-up signal on another frequency band / cell - Cell wake-up signal on LTE cells - Cell wake-up signal relayed via side link - Triggering messages via the core network.

[0076] For example, a trigger signal can be a wake-up signal transmitted on the same cell as access information, where the trigger information describes the time and / or frequency resources used to transmit the trigger signal.

[0077] For example, a trigger signal is a wake-up signal transmitted on a cell that is different from the access information, where the trigger information describes how to access other cells to transmit the trigger signal.

[0078] In some embodiments, the base station is configured to switch between a normal operating mode and an energy-saving operating mode according to at least one of the following: -Schedule, -Xn signaling, -Operations and Maintenance - Core signaling.

[0079] In some embodiments, the trigger information describes one or more of the following: - The location of the synchronization signal [e.g., time and / or frequency] [e.g., SSB PositionsInBurst], -At least a portion of the uplink configuration, -At least a portion of the random access channel configuration, -At least a portion of the power configuration, - At least a portion of a time-division and / or frequency-division duplex configuration, - At least a portion of the system information configuration [e.g., allowing a user device (UE) to listen to the transmission of system information (e.g., MIB / SIB-1)].

[0080] In some embodiments, the base station is configured to receive a trigger signal on a first cell or frequency band, wherein the base station is configured to transmit at least one of the following: -The first part of the access information -Trigger information, -The second part of the access information On a second cell or frequency band that is different from the first frequency band or cell.

[0081] In some embodiments, a base station is configured to serve multiple cells or frequency bands, wherein the base station is configured to transmit a first portion of access information and trigger information on a first cell or frequency band, wherein the base station is configured to receive a trigger signal and, in response to the trigger signal, transmit a second portion of access information on a second cell or frequency band different from the first cell or frequency band.

[0082] In some embodiments, the triggering information enables the UE to trigger the transmission of a second portion of the access information in at least one second cell.

[0083] In some embodiments, the triggering information describes one or more of the following for each of the at least one second cell: - Second cell identifier (e.g., Physical Cell Identifier, PCI). - The frequency or channel of the second cell [e.g., absolute radio frequency channel number, ARFCN], - The location of the synchronization signal [e.g., time and / or frequency] [e.g., SSB PositionsInBurst], -At least a portion of the uplink configuration, -At least a portion of the random access channel configuration, -At least a portion of the power configuration, - At least a portion of a time-division and / or frequency-division duplex configuration, - At least a portion of the system information configuration [e.g., allowing a user device (UE) to listen to the transmission of system information (e.g., MIB / SIB-1)].

[0084] In some embodiments, the base station is configured to transmit trigger information via a container.

[0085] In some embodiments, the base station is configured to transmit trigger information along with system information of the first cell or frequency band.

[0086] In some embodiments, the base station is configured to receive a trigger signal transmitted on the same frequency band or cell as the first part of the access information, the trigger information, and / or the second part of the access information.

[0087] In some embodiments, the base station is configured to transmit a first portion of access information periodically and trigger information periodically, wherein the period of the first periodicity is different from the period of the second periodicity.

[0088] In some embodiments, the period of the second period is longer than the period of the first period.

[0089] In some embodiments, the trigger information has a small repetition period within the trigger information period [e.g., a 20-millisecond repetition period within a 320-millisecond period].

[0090] In some embodiments, the base station is configured to repeatedly transmit trigger information according to a first mode.

[0091] In some embodiments, the base station is configured to repeatedly transmit the first access information according to a second mode.

[0092] For example, repeating a predefined pattern. For example, the first pattern and the second pattern are different.

[0093] In some embodiments, the base station is configured to transmit trigger information only on frames that include a synchronization block.

[0094] This invention provides a base station [e.g., gNB] for a wireless communication network [e.g., 5G / NR], wherein the base station is configured to serve a cell of the wireless communication network, wherein the base station is configured to transmit [e.g., initial] access information to enable one or more UEs to initially access the cell, wherein the base station is configured to transmit trigger information in an energy-saving operating mode to enable the UE to trigger the transmission of access information, and to transmit access information in response to receiving a trigger message.

[0095] This invention provides a sidelink relay user equipment (UE) for a wireless communication network [e.g., 5G / NR], wherein the sidelink relay UE is configured to relay signals between a base station and a remote UE in the wireless communication network, wherein the signals include one or more of the following - Transmitting partial access information from the base station to the remote UE - Transmitting trigger signals (e.g., wake-up signals) from a remote UE to the base station. - Transmit trigger information from the base station to the remote UE.

[0096] In some embodiments, the sidelink relay user equipment (UE) acts as a repeater, because... -UE function, - Pre-configured [e.g., firmware configuration, uSIM card attributes], - Configuration message [e.g., RRC configuration], or - Higher-level configurations [e.g., sidelink applications].

[0097] In some embodiments, the user equipment is configured [e.g., initially] to access a cell in an energy-saving operating mode, and the cell transmits only a first portion of access information required for the user equipment to access the cell in the energy-saving operating mode, wherein the user equipment is configured to access the cell by at least one of the following methods: - This first part of receiving access information. - Receive the trigger information in the second part of the enable user equipment trigger transmission access information, and - Trigger signals are transmitted based on trigger information [e.g., wake-up signals].

[0098] In some embodiments, the user equipment is configured to access the cell in the following ways: - The second part of receiving access information [e.g., in response to the transmission of a trigger message].

[0099] In some embodiments, a first portion and a second portion of the access information [e.g., together or in combination] are derived from the access information.

[0100] In some embodiments, access information includes synchronization signals and / or system information.

[0101] In some embodiments, the first part of the access information includes only the first part of the synchronization signal and / or system information, wherein the second part of the access information includes at least the second part of the synchronization signal and / or system information [e.g., not included in the first part of the access information].

[0102] In some embodiments, the access information includes at least two of the following: -Main synchronization signal, - First synchronization signal -Master Message Block (MIB) - A System Information Block 1 (SIB-1). - Another system information block [e.g., SIB-2].

[0103] In some embodiments, the first part of the access information includes information indicating whether trigger information is transmitted.

[0104] In some embodiments, the user equipment is configured to receive first signaling information indicating whether and / or when a second portion of triggering information and / or access information is transmitted.

[0105] In some embodiments, the user equipment is configured to receive second signaling information indicating whether and / or when the base station will switch between an energy-saving operating mode and a normal operating mode.

[0106] In some embodiments, the user equipment is configured to receive trigger information by receiving one of a plurality of different beams used to transmit trigger information.

[0107] In some embodiments, the trigger signal is a wake-up signal transmitted on the same cell as the access information, wherein the trigger information describes the time and / or frequency resources used to transmit the trigger signal.

[0108] In some embodiments, the trigger signal is a wake-up signal transmitted on a different cell along with access information, wherein the trigger information describes how to access the other cell to transmit the trigger signal.

[0109] In some embodiments, the trigger signal is transmitted on an LTE cell, wherein the trigger information describes the frequency of the LTE cell used to transmit the trigger signal.

[0110] In some embodiments, the trigger signal is transmitted via a side link, wherein the trigger information describes a side link resource pool for transmitting the trigger signal.

[0111] In some embodiments, the second part of the access information includes at least a portion of System Information Block 1 (SIB-1).

[0112] In some embodiments, the triggering information is transmitted through first downlink control information, wherein the second part of the access information includes second downlink control information, and the first downlink control information and the second downlink control information are associated with different radio network temporary identifiers (RNTIs).

[0113] In some embodiments, the first downlink control information is transmitted on control resource set zero (CORESET#0).

[0114] In some embodiments, a first portion of access information including System Information Block 1 (SIB-1) is transmitted periodically at a first cycle, wherein the user equipment is configured to receive additional information including trigger information and information describing the first cycle of periodic transmission of the first portion of access information including System Information Block 1 (SIB-1), wherein a second portion of access information further includes a System Information Block 1 (SIB-1), wherein the second portion of access information including System Information Block 1 (SIB-1) is periodically transmitted at a second cycle less than the first cycle in response to a trigger signal.

[0115] In some embodiments, the user equipment is configured to receive additional information including trigger information and a portion of System Information Block 1 (SIB-1).

[0116] In some embodiments, this portion of System Information Block 1 (SIB-1) is at least one of the following: - A primary indication used to indicate whether the community is off-limits. - A second indication to indicate whether certain user equipment (UE) groups should be considered as barred from accessing the cell. - The third indicator is used to indicate whether IMS emergency calls are supported. - Hash version of the Public Land Mobile Network (PLMN) - Describe at least one of the following: single sideband (SSB) position, SSB period, time division duplex (TDD) mode, time alignment, and offset.

[0117] In some embodiments, the first downlink control information is multiplexed with a synchronization signal block [e.g., PSS and / or SSS].

[0118] In some embodiments, the first downlink control information and the synchronization signal block are transmitted in the same time slot.

[0119] In some embodiments, the first downlink control information and the synchronization signal block are transmitted on different symbols of the same time slot.

[0120] In some embodiments, the first part of the access information includes a primary synchronization signal block and a secondary synchronization signal block, wherein the second part of the access information includes a primary information block (MIB) and a system information block 1 (SIB-1), wherein the trigger information is a three-level synchronization signal that indicates that the second part of the access information is transmitted in response to the trigger signal.

[0121] In some embodiments, the first part of the access information includes a master information block (MIB), wherein the second part of the access information includes system information block one (SIB-1), and the triggering information is included in the master information block (MIB).

[0122] In some embodiments, the trigger information is included in the main information block (MIB) via a K-ssb value.

[0123] In some embodiments, the trigger information is included as a separate indication in the main information block (MIB) [e.g., using a spare bit on the MIB].

[0124] In some embodiments, the Master Information Block (MIB) is an extended Master Information Block that includes at least one bit indicating that an extension of the Master Information Block is transmitted.

[0125] In some embodiments, the triggering information is included in the main information block (MIB) by directly indicating that the transmission of the second part of the access information will be triggered by a trigger signal.

[0126] In some embodiments, the trigger signal is a wake-up signal.

[0127] In some embodiments, the first part of the access information includes a main information block, MIB, wherein the second part of the access information includes system information block one (SIB-1), and the user equipment is configured to receive additional information including a portion of system information block one [e.g., SIB-0], wherein the portion of system information block one includes only a part of system information block one, wherein the portion of system information block one [e.g., SIB-0] includes trigger information.

[0128] In some embodiments, a portion of System Information Block 1 (e.g., SIB-0) is transmitted via the Physical Downlink Shared Channel (PDSCH).

[0129] In some embodiments, the user equipment is configured to receive the first part of the system information block by receiving one of a plurality of different beams used to transmit the first part of the system information block.

[0130] In some embodiments, a portion of the system information block is multiplexed with a synchronization signal block [e.g., PSS and / or SSS].

[0131] In some embodiments, the trigger signal is a first trigger signal, wherein the second part of the access information is split into two sub-parts for transmission, wherein the user equipment is configured to transmit the first trigger signal to trigger the transmission of the first sub-part of the second part of the access information, and wherein the user equipment is configured to transmit the second trigger signal in response to receiving the second trigger signal to trigger the transmission of the second sub-part of the second part of the access information.

[0132] In some embodiments, the user equipment is configured to transmit a trigger signal via a sidelink relay UE.

[0133] In some embodiments, the user equipment is configured to receive trigger information via a sidelink relay UE.

[0134] In some embodiments, the user equipment is configured to receive early information on demand regarding the availability of cell access prohibition and / or System Information Block 1 (SIB-1) prior to the first part of the access information and / or trigger information.

[0135] In some embodiments, the user equipment is configured to receive trigger information via direct signaling.

[0136] In some embodiments, the trigger signal is one of the following options: -Wake-up signal - Cell wake-up signals on the same frequency band / cell - Cell wake-up signal on another frequency band / cell - Cell wake-up signal on LTE cells - Cell wake-up signal transmitted via sidelink relay - Triggering messages via the core network.

[0137] For example, a trigger signal can be a wake-up signal transmitted on the same cell as access information, where the trigger information describes the time and / or frequency resources used to transmit the trigger signal.

[0138] For example, a trigger signal is a wake-up signal transmitted on a cell that is different from the access information, where the trigger information describes how to access the cell to transmit the trigger signal.

[0139] In some embodiments, the trigger information describes one or more of the following: - The location of the synchronization signal [e.g., time and / or frequency] [e.g., SSB PositionsInBurst], -At least a portion of the uplink configuration, -At least a portion of the random access channel configuration, -At least a portion of the power configuration, - At least a portion of a time-division and / or frequency-division duplex configuration, - At least a portion of the system information configuration [e.g., allowing user devices to listen to the transmission of system information (e.g., MIB / SIB-1)].

[0140] In some embodiments, the user equipment is configured to transmit a trigger signal on a first cell or frequency band, wherein the user equipment is configured to receive at least one of the following: -The first part of the access information -Trigger information, -The second part of the access information On a second cell or frequency band that is different from the first frequency band or cell.

[0141] In some embodiments, the user equipment is configured to receive a first portion of access information and trigger information on a first cell or frequency band, wherein the user equipment is configured to transmit a trigger signal and receive a second portion of access information on a second cell or frequency band different from the first cell or frequency band.

[0142] In some embodiments, the triggering information enables the user equipment to trigger the transmission of a second portion of the access information in at least one second cell.

[0143] In some embodiments, the triggering information describes one or more of the following for each of the at least one second cell: - Second cell identifier (e.g., Physical Cell Identifier, PCI). - The frequency or channel of the second cell [e.g., absolute radio frequency channel number, ARFCN], - The location of the synchronization signal [e.g., time and / or frequency] [e.g., SSB PositionsInBurst], -At least a portion of the uplink configuration, -At least a portion of the random access channel configuration, -At least part of the power supply configuration, - At least a portion of a time-division and / or frequency-division duplex configuration, - At least a portion of the system information configuration [e.g., allowing a user device (UE) to listen to the transmission of system information (e.g., MIB / SIB-1)].

[0144] In some embodiments, the user equipment is configured to receive trigger information via a container.

[0145] In some embodiments, the user equipment is configured to receive trigger information along with system information of the first cell or frequency band.

[0146] In some embodiments, the user equipment is configured to transmit a trigger signal on the same frequency band or cell as the first part of the received access information, the trigger information, and / or the second part of the access information.

[0147] In some embodiments, the user equipment is configured to receive a first portion of access information based on a first periodicity and trigger information based on a second periodicity, wherein the period of the first periodicity is different from the period of the second periodicity.

[0148] In some embodiments, the period of the second period is longer than the period of the first period.

[0149] In some embodiments, the trigger information has a small repetition period within the trigger information period [e.g., a 20-millisecond repetition period within a 320-millisecond period].

[0150] In some embodiments, the trigger information is repeatedly transmitted according to a first mode.

[0151] In some embodiments, the first access information is repeatedly transmitted according to the second mode.

[0152] For example, repeating a predefined pattern. For example, the first pattern and the second pattern are different.

[0153] In some embodiments, the user equipment is configured to receive trigger information only on frames that include a synchronization block.

[0154] This invention provides a user equipment (UE) [e.g., gNB] for [e.g., 5G / NR] wireless communication networks, wherein the UE is configured to access a cell only in response to receiving a trigger signal [e.g., initially], operates in an energy-saving mode, and transmits only the access information required by the UE to access the cell in the energy-saving mode, wherein the UE is configured to access the cell in the following manner: - Receive trigger information, enabling the user equipment to trigger the transmission of the second part of the access information, and - A trigger message is transmitted based on this trigger information.

[0155] This invention provides an operating method for a base station (e.g., gNB) in a wireless communication network (e.g., 5G / NR). The method includes the steps of providing service to a cell in the wireless communication network. The method includes a step of transmitting (e.g., initial) access information to enable one or more UEs (User Equipments) to (e.g., initially) access the cell, wherein, in an energy-efficient operating mode, the access information is transmitted by transmitting the following portions: - The first part of the access information (e.g., a first proper subset), and - Triggering information, which enables the UE to trigger the transmission of the second part of the access information.

[0156] This invention provides an operation method for a base station (e.g., gNB) in a wireless communication network (e.g., 5G / NR). The method includes steps of providing services to a cell in the wireless communication network. The method includes a step of transmitting (e.g., initial) access information to enable one or more UEs (User Equipments) to (e.g., initially) access the cell, wherein in a power-saving operation mode, the access information is transmitted only in response to a trigger signal that triggers the transmission of the access information.

[0157] This invention provides an operational method for a sidelink relay UE in a wireless communication network (e.g., 5G / NR). The method includes the step of relaying a signal between a base station of the wireless communication network and a remote UE, wherein the signal includes one or more of the following: - Transmitting partial access information from the base station to the remote UE - Transmitting trigger signals from remote UE to base station - Transmit trigger information from the base station to the remote UE.

[0158] This invention provides an operating method for a user equipment (UE) in a wireless communication network [e.g., 5G / NR]. The method includes a step of accessing a cell operating in an energy-saving mode, wherein the cell, in energy-saving mode, only transmits a first portion of access information required for the UE to access the cell, wherein accessing the cell includes: - Receive the first part of the access information. - Receive trigger information, enabling the UE to trigger the transmission of the second part of the access information, and - Trigger messages are transmitted based on trigger information.

[0159] This invention provides an operation method for a user equipment (UE) in a wireless communication network [e.g., 5G / NR]. The method includes the step of accessing a cell, the cell being in an energy-saving operation mode, and the cell transmitting access information required for the UE to access the cell only in response to the reception of a trigger signal in the energy-saving operation mode, wherein accessing the cell includes: - Receive trigger information, enabling the UE to trigger the transmission of the second part of the access information, and - Based on this trigger information, a trigger message is transmitted.

[0160] In some embodiments, the signals and information blocks broadcast by a base station (gNB) to enable user equipment (UE) to perform initial access in order to dynamically acquire critical system information are considered as a series of steps. In some embodiments, this sequence of steps can be divided into two parts: - The first part of this sequence of steps is always executed regardless of the operating mode (e.g., broadcast by the gNB, decoded by the UE), and - The second part of this sequence step may be performed on demand, that is, the downlink part is broadcast on demand and the uplink part can be received on demand.

[0161] The concept is as follows Figure 7 As shown, the initial access can be divided into two operation sequences. Specifically, Figure 7 The transmission of initial access information 300 is illustrated schematically, with a first portion 306_1 transmitted, for example as a normally open step 302 (e.g., steps 1 to M, where M is a natural number greater than or equal to 1), and a second portion 306_2 transmitted, for example as an on-demand step 304 (e.g., steps M+1 to N, where N is a natural number greater than M). Therefore, the first portion 306_1 of the initial access information 300 can always be transmitted (e.g., periodically / periodically (e.g., according to a schedule)), while the second portion 306_2 can only be transmitted on demand, for example, in response to a reception trigger signal. Figure 7 As shown, the conventional initial access is divided into two sequential steps.

[0162] In some embodiments, the second part of the sequence steps, namely the on-demand steps, may or may not be executed depending on network state or further conditions. This may include controlling whether to broadcast downlink signals and whether to perform uplink reception. When the on-demand steps are not executed, the gNB may broadcast additional steps. Alternatively, these additional steps may always be broadcast regardless of network state. The additional steps include at least information about how the user equipment (UE) triggered the network state switch to execute the on-demand steps, but may also include more information. When the on-demand steps are executed, the additional steps may or may not be executed.

[0163] Figure 8 As shown, to broadcast the second sequence step on demand, two new elements can be introduced: an additional step 303 and a trigger procedure 310. Specifically, Figure 8The transmission of initial access information 300 is illustrated schematically, by transmitting, for example, a first portion 306_1 of the initial access information 300 in normally open steps 302 (e.g., steps 1 to M, where M is a natural number greater than or equal to 1), and by transmitting trigger information 308 (allowing the UE to execute triggering procedure 310, e.g., triggering the transmission of a second portion 306_2 of the initial access information 300) in additional steps 303 (e.g., steps A.1 to A1), and by transmitting the second portion 306_2 of the initial access information 300 in response to triggering procedure 310 (e.g., receiving a trigger signal) in on-demand steps 304 (e.g., steps M+1 to N, where N is a natural number greater than M). Figure 8 As shown, when the second sequence step needs to be broadcast on demand, a third sequence step including at least the information required to execute the trigger procedure will be broadcast.

[0164] In some embodiments, the presence of additional steps and triggering procedures may be associated with a network power-saving mode, such as a cell DTX / DRX activation mode, and the presence of the second part of the sequence steps may be associated with another network mode, such as a cell DTX / DRX deactivation mode.

[0165] In some embodiments, a normally open step may include an indication to distinguish between performing / broadcasting an on-demand step and an additional step. In some embodiments, this indication may signal to the user equipment (UE) whether the network is in power-saving mode.

[0166] In some embodiments, the additional steps may occur in parallel with the normally open steps, for example, integrated into the same message as the normally open steps, or transmitted after the normally open steps, for example, in a separate message.

[0167] In some embodiments, the combination of normally open steps and on-demand steps may correspond exactly to the sequence steps supported by conventional UEs and UEs that do not support additional steps and triggering procedures.

[0168] In some embodiments, the network may send a signal processed by the UE indicating that the network is about to switch to a broadcast / receive on-demand step or an additional step. This signal may include a timer or counter to indicate when the broadcast / receive mode changes. Various embodiments may exist, such as: During the normally open step, a timer and / or counter are sent to indicate that the network is about to switch from one mode to another.

[0169] Send timers and / or counters during the on-demand step to indicate that the network is about to switch from the broadcast / receive on-demand step to the broadcast / receive supplementary step.

[0170] During the additional steps, timers and / or counters are sent to indicate that the network is about to switch from the broadcast / receive additional steps to the broadcast / receive on-demand steps.

[0171] A combination of the above items (e.g., two or more of the first few items).

[0172] In some embodiments, the additional steps may include a reduced set of information that is typically (Figure 7) broadcast in the (potentially) on-demand steps.

[0173] Following the additional steps, the UE can perform a triggering operation. Subsequently, the gNB can resume the normal broadcast of the second sequence steps, while the UE can continue with the initial access and perform the remaining second sequence steps.

[0174] As a basis for certain exemplary embodiments, the following (e.g., high-level) sequence of steps is followed by a traditional UE in 5G NR:

[0175] Splitting the sequence steps into different locations can lead to different implementations with alternative structures.

[0176] For example, one implementation can be defined as follows: Normally open procedure: 1 - PSS 2 - SSS (Potentially) On-demand steps—executed when the network is not in power-saving mode or after a trigger: 3 - PBCH / MIB 4 - SIB-1 PDCCH on CORESET#0 CSS 5 - SIB-1 PDSCH 6 - Other SIBs 7 – RA Procedure Additional steps – Perform when the network is in power-saving mode: A - Alternative to PBCH / MIB Another approach might be to split the implementation at different points: Normally open procedure: 1- PSS 2- SSS 3- MIB / PBCH 4- SIB-1 PDCCH on CORESET#0 CSS (Potentially) On-demand steps – executed when the network is not in power-saving mode or after a trigger: 5- SIB-1 PDSCH 6- Other SIBs 7 – RA Procedure Additional steps – Perform when the network is in power-saving mode: A – New SIB PDCCH on CORESET#0 CSS B – New SIB PDSCH In a specific embodiment, the information used to execute the trigger procedure (TP) is hereinafter collectively referred to as TP-Info.

[0177] Each dividing point and specific implementation presents unique challenges, thus requiring specific solutions. For this reason, the following subsections will describe specific implementations that include specific solutions.

[0178] In all these embodiments, some (or even all) of the basic information required for initial access may be omitted and instead broadcast on demand. At least in the case of omitting this information, the network will send TP-Info to the UE. Signaling This includes the parameters required for the UE to execute the trigger procedure (TP).

[0179] After the triggering procedure is completed, the UE expects the network to send it the remaining basic information required for initial access, such as resuming broadcast.

[0180] Even if this information is not omitted, TP-Info can still be sent.

[0181] 1. On-demand SIB-1 with new DCI signaling In this embodiment, SIB-1 can be sent on demand. The first sequence step corresponds to regular SSB reception, and the second sequence step corresponds to regular SI reception.

[0182] The information required to trigger the procedure can be encoded in a new DCI format corresponding to the additional steps. This new DCI can be sent on the defined CORESET#0 and the corresponding general search space (CSS), but different RNTIs (non-SI-RNTIs) can be used to distinguish between sending on-demand steps and additional steps. This concept is illustrated in Figure 9.

[0183] Specifically, Figure 9This is a schematic illustration of the transmission of initial access information 300. The transmission of the first part 306_1 of the initial access information 300 is performed as a normally open step 302; trigger information 308 is transmitted as an additional step 303 (allowing the UE to execute trigger procedure 310, such as triggering the transmission of the second part 306_2 of the initial access information 300); and the second part 306_2 is transmitted as an on-demand step 306_2 in response to trigger procedure 310 (e.g., receiving a trigger signal). Thus, the first part 306_1 of the initial access information 300 may include PSS, SSS, PBCH, and MIB, while the trigger information 308 may include DCI with TP-RNTI, and the second part 306_2 of the initial access information 300 may include DCI with SI-RNTI, SIB-1 on PDSCH, other SIBs, and RA.

[0184] In other words, Figure 9 A specific embodiment is shown where a demarcation point is provided between the SSB and SIB-1 (for the on-demand SIB-1 case). The trigger information is included in a new DCI format and scrambled using a new DCI (here named TP-RNTI – Trigger Radio Network Temporary Identifier).

[0185] This embodiment is the preferred option for several reasons. First, the SSB remains unchanged and is fully compatible with legacy UEs. Second, distinguishing between broadcasting the second sequence step (SIB-1) or the third sequence step (trigger procedure information) relies on an existing mechanism that uses different RNTIs for scrambling. Legacy UEs will automatically not attempt to decode the new information (TP-Info), but newer UEs can listen for both SI-RNTI and TP-RNTI in the PDCCH of CORESET#0. In fact, as long as there is sufficient capacity on CORESET#0, nothing prevents the simultaneous scheduling of information with both SI-RNTI and TP-RNTI when the gNB decides (e.g., this can be advantageous in a variant described below where SIB-1 is not completely omitted but only the transmission frequency is reduced). This also means that the gNB can quickly switch between broadcasting SIB-1 or TP-Info. The switching between these two modes can be decided by the gNB itself or as a response to the UE performing a TP operation. Last but not least, significant energy is saved even if TP-Info is always broadcast. This is because CORESET#0 only occupies 1-3 symbols, while SIB-1 PDSCH information often occupies the remainder of a time slot. As long as the gNB hardware supports symbol shutdown (micro-sleep), this method can save most of the energy typically used for SIB-1. As a potential drawback, DCI can only carry a very limited amount of signaling, therefore the amount of information sent to this channel must be carefully designed to be both efficient and minimally concise.

[0186] Please note that the term "Trigger Procedure RNTI (TP-RNTI)" is used in this document only as an example, but other meaningful names may be used, such as "On-Demand SIB-1 (ODSI-RNTI)" or "Cell Wake-up Signal RNTI (C-WUS-RNTI)". Regardless of the name, the concept is a new RNTI that carries information that allows the UE to execute the SIB-1 trigger procedure on demand.

[0187] In some versions of this embodiment, SIB-1 is not completely omitted, but may be transmitted at a reduced periodicity. For example, SIB-1 may be transmitted once every 160 milliseconds (e.g., repeated once within its 160 millisecond period) or once every 80 milliseconds (e.g., repeated twice within its 160 millisecond period). In this case, the DCI may include some information about when the next regular SIB-1 transmission will occur. In this way, the UE can decide whether to wait for a lower frequency of SIB-1 transmissions (e.g., for non-time-critical operations) or to trigger SIB-1 on demand at a regular period (e.g., for time-critical operations). In the case of a reduced SIB-1 repetition rate, SIB-1 on-demand triggering can be used to restore the regular SIB-1 repetition rate, such as 20 milliseconds in FR1 or the same repetition rate as SSB in FR2.

[0188] When on-demand SIB-1 is triggered, SIB-1 may be transmitted a fixed number of times, such as 1, 2, 4, 8, 10, 16, ..., N, or within a fixed time period, such as 160 milliseconds, 320 milliseconds, 640 milliseconds, etc., until the network stops transmitting SIB-1 again and switches to transmitting TP-info.

[0189] As an alternative, in some variations of this embodiment, a separate CORESET or a different search space can be configured for transmitting TP-info. Such a CORESET and search space may be specific to each frequency band, depending on factors such as minimum system bandwidth, SSB SCS, PDCCH SCS, and the multiplexing mode between SSB and PDCCH (CORESET#0 or TP-CORESET). For simplicity, the CORESET used by the DCI transmitting TP-Info will be referred to as TP-CORESET below. TP-CORESET can be CORESET#0, another existing CORESET, or a newly defined CORESET. If a new CORESET is defined for TP-CORESET, this distinction is sufficient, and SI-RNTI can be reused as SI-RNTI.

[0190] If an alternative search space is defined, the new search space can occupy only one symbol to minimize energy consumption. Existing CSS for CORESET#0 can occupy 1-3 symbols.

[0191] 1.1 DCI Design In an embodiment, the DCI carrying TP-info may carry only very limited information, but it can still provide the UE with enough information to execute the trigger procedure.

[0192] In some embodiments, the exact content of the DCI depends on the specific form of the trigger (see Section 8). Here are some exemplary embodiments: The TP can be a Cell Wake-up Signal (C-WUS) transmitted on the same carrier / cell. For example, in this case, at least such a DCI can carry enough information for the User Equipment (UE) to determine which time-frequency resources in the OFDM mesh are available for transmitting the C-WUS. If the signal needs to be transmitted on the same carrier as the DCI (e.g., Time Division Duplex (TDD)), this could be a time-frequency offset, such as the value of the entry in the table used to determine that time-frequency offset. If the uplink uses a different frequency band (e.g., Frequency Division Duplex (FDD), Supplementary Uplink (SUL)), this could instead be an indication of that frequency (e.g., Absolute Radio Channel Number (ARFCN)). Additionally, information about the PRACH sequence and / or information that allows the UE to determine the C-WUS transmit power can be provided. This could be, for example, the transmit power used for the PBCH so that the UE can determine path loss, as well as power control parameters such as the target receive power.

[0193] The TP can be a C-WUS transmitted on another carrier / cell. For example, in this case, the DCI can include information about how to access other frequency bands, such as the frequency of the carrier that can be found (e.g., ARFCN offset or Global Synchronization Channel Number (GSCN) offset), and can also include timing information, such as the SSB period on the target frequency band / cell (other cells) and / or the time to the next SSB. Such information can be repeated for different cells / frequency bands for which the TP can be performed.

[0194] TP can be transmitted via an LTE cell. For example, it may include the frequency of the LTE cell (e.g., the E-UTRA Absolute Radio Channel Number (EARFCN)).

[0195] TPs can be sent via sidelinks. For example, DCIs might include information about the SL resource pools that can perform TPs.

[0196] In some embodiments, if multiple types of TP are available to support multiple scenarios, such as simultaneously supporting the transmission of C-WUS on the same carrier and on another carrier, then the DCI may also include information for distinguishing the TP scenario currently being signaled.

[0197] Before reading SIB-1, the UE has limited knowledge of the cell it is accessing. In fact, unless the UE has cached the cell's information, it cannot even determine whether the cell belongs to a network it can access. Furthermore, the network may have banned the cell between two accesses to the same cell. Therefore, there are several types of information that, while not strictly necessary for performing TP, may need to be sent earlier (e.g., before TP) for performance reasons. Therefore, DCI may also include early information, providing, in some way (e.g., in a condensed form), a portion of the information present in SIB-1. This could be, for example: DCI may include an indication of whether the cell is denied access—for example, for UEs that ignore denial information in the MIB and read denial information from the SIB-1.

[0198] DCI may include indications of whether certain UE groups (e.g., non-terrestrial networks (NTN), redcap of 1Rx, redcap of 2RX, etc.) can be considered as prohibited from accessing the cell.

[0199] The DCI may include a 1-bit indicator to indicate whether IMS emergency calls are supported.

[0200] DCI may include a 1-bit indicator to indicate whether IMS eCall is supported.

[0201] A Public Land Mobile Network (PLMN) (i.e., Mobile Country Code and Mobile Network Code (MCC+MNC)) can be hashed to a target number of bits (e.g., 8 or 16 bits) and transmitted via the DCI. Another bit on the DCI may be used to control whether the DCI provides the hashed PLMN information. After the User Equipment (UE) reads the hashed PLMN field, it can apply the same hash function to its known accessible PLMNs (e.g., those listed in its SIM card). If the field matches the hashed PLMN, the UE will continue to access the cell and can begin TP (Transmission Terminal). If they do not match, the UE marks the cell as infeasible. The same hash logic can also be applied to Independent Non-Public Network (SNPN) identifiers. A list of PLMN identifier hashes or a list of SNPN identifier hashes can be provided, or only the first n hashes.

[0202] The DCI may include information that allows the UE to further optimize synchronization or specify the intended location of the signal (e.g., the location where the current signaling is positioned in the frame). This information may repeat content from SIB-1 in the DCI, such as one or more of the following: The location of the SSB in the emergency The periodicity of SSB in the service cell Description of TDD mode, Time alignment information, The offset relative to point A.

[0203] A specific example of a DCI in this embodiment is a DCI that includes one or more of the following fields: TP-info index (e.g., 4 bits) — The UE uses this index to look up the predefined configuration of the time, frequency, and RACH preamble for performing TP in a table.

[0204] The first PLMN or NPN hash (e.g., 8 bits) – such as the CRC-8 of the PLMN identifier or SNPN identifier as shown in SIB-1. This hash identifier is the first PLMN in the list.

[0205] Other PLMNs or NPNs exist (e.g., 1 bit) – True if there are more PLMNs or SNPNs whose identifiers do not appear on this DCI.

[0206] SIB-1 Denied (e.g., 1 bit) — This field indicates that the cell is denied access. Ignore UEs with MIB denied access, or need to combine MIB denied access with SIB-1 denied access for evaluation.

[0207] SS PBCH Block Power (e.g., 7 bits) – This field corresponds to ss-PBCH-BlockPower in SIB-1. The value of this field can be added to MIN_PBCH_POWER (e.g., -50) to obtain the SS PBCH block power in dBm.

[0208] Target Received Power (7 bits) – The value of this field can be subtracted from MAX_TARGET_RX_POWER_CWUS (e.g., -74 dBm) to obtain the target continuous wave user channel (C-WUS) received power (in dBm). Power ramp step size (e.g., 2 bits) – 00 – 0 dB, 01 – 2 dB, 10 – 4 dB, 11 – 6 dB.

[0209] PRACH configuration index (e.g., 8 bits) — as in the PRACH configuration in [5], where the RACH preamble can be used to trigger the procedure.

[0210] In FR2, only DCI includes the ssb position (e.g., 16 bits) in the burst.

[0211] Of course, this is just one example. For instance, the PLMN hash can be any hash function that produces 8 bits (e.g., Pearson hash), or the TPinfo index can have any number of bits. The power ramp step can have other mappings. Furthermore, the example values ​​of MIN_PBCH_POWER (-50) and MAX_TARGET_RX_POWER_CWUS (-74 dBm) were chosen to be consistent with the SIB-1 values, but different values ​​may be considered in other embodiments.

[0212] 1.2 Reuse Mode In some embodiments, to achieve full coverage, the DCI including TP-info (e.g., located within TP-CORESET) can also be beamformed in different directions (e.g., in the same manner as typically used for SSB and SIB-1). Therefore, multiplexing modes that allow for efficient beamforming can be defined. For example, when CORESET#0 is TP-CORESET, multiplexing mode 1 (on FR1) and multiplexing modes 2 and 3 (on FR2) described in [4] can be referenced.

[0213] To reduce (or even minimize) energy consumption and provide efficient beam scanning of SSB + TP-info or SSB + SIB-1, this embodiment can also use SSB / CORESET#0 multiplexing modes 2 and 3 on FR1, that is, CORESET#0 and SIB-1 PDSCH are frequency multiplexed with SSB.

[0214] Alternatively, if a new CORESET is defined as TP-CORESET for TP-info, frequency reuse of the SSB can be applied to TP-CORESET while CORESET#0 remains backward compatible.

[0215] Another option to reduce energy consumption and allow efficient beam scanning of SSB + TP-Info (which can also be applied to SSB + SIB-1) is to use a new multiplexing mode that places the TP-CORESET on the same time slot as the SSB, but on a different symbol, for example, the CORESET is located 1 or 2 symbols before the SSB. If this new multiplexing mode is also applied to SIB-1 (TP-CORESET is CORESET#0), or if other PDSCHs are required as supplements (see Section 7), the PDSCH mode of the new multiplexing mode can be transmitted on the remaining symbols and / or in parallel with the SSB.

[0216] In this embodiment, two new multiplexing modes between CORESET and SSB are considered. These modes are designed and suitable for TP-CORESET, but can also be used for CORESET#0. They are defined in this embodiment as follows: Multiplexing mode 4: TP-CORESET is located in the same time slot as SSB and is transmitted before SSB.

[0217] Multiplexing mode 5: TP-CORESET is located in the same time slot as SSB and is transmitted after SSB.

[0218] [4] Defines the SSB locations on the OFDM mesh in various cases (A to G) under different SCS configurations. The above definitions are applicable to any of these cases, but for simplicity, this paper only describes one specific case (i.e., case A below 3 GHz). Figures 10, 11 and 12 show multiplexing mode #4 including 1 or 2 symbols TP-CORESET, and the possible gaps between TP-CORESET and SSB (as shown in Figure 11).

[0219] Specifically, Figure 10 A schematic diagram of a multiplexing mode including four beams 402_1 to 402_4 is shown, in which trigger information and the first part of access information are multiplexed in each beam 402_1 to 402_4, wherein the trigger information is transmitted on a symbol TP-CORESET 404_1 to 404_4 one symbol preceding the first part of access information 406_1 to 406_4. In Figure 10, for example, SSB is transmitted as the first part of access information 406_1 to 406_4, such as including PSS, PBCH and SSS. In other words, Figure 10 A schematic diagram of TP-CORESET multiplexing mode #4 (before SSB) is shown, with a symbol TP-CORESET and no gap between CORESET and SSB.

[0220] Figure 11 A schematic diagram of a multiplexing mode including four beams 402_1 to 402_4 is shown, wherein in each beam 402_1 to 402_4, trigger information and the first part of access information are multiplexed, wherein the trigger information is transmitted on a single symbol TP-CORESET 404_1 to 404_4, with a gap before the first parts of access information 406_1 to 406_4. In Figure 11, for example, SSB is transmitted as part of the first parts of access information 406_1 to 406_4, including, for example, PSS, PBCH, and SSS. In other words, Figure 11The structure of TP-CORESET multiplexing mode #4 (before SSB) is illustrated schematically, which includes a symbol TP-CORESET and a gap between TP-CORESET and SSB.

[0221] Figure 12 A schematic diagram of a multiplexing mode comprising four beams 402_1 to 402_4 is shown, wherein in each beam 402_1 to 402_4, trigger information and the first part of access information are multiplexed, wherein the trigger information is transmitted on the two symbols TP-CORESET404_1 to 404_4 preceding the first part of the access information 406_1 to 406_4. Figure 12 For example, as the first part of access information 406_1 to 406_4, an SSB is transmitted, which may include PSS, PBCH, and SSS. In other words, Figure 12 A schematic diagram of TP-CORESET multiplexing mode #4 (before SSB) including 2 symbols TP-CORESET is shown.

[0222] Figure 13 A schematic diagram of a multiplexing mode including four beams 402_1 to 402_4 is shown, wherein in each beam 402_1 to 402_4, trigger information and the first part of access information are multiplexed, wherein the trigger information is transmitted on a symbol TP-CORESET 404_1 to 404_4 following the first part of access information 406_1 to 406_4. In Figure 13, for example, SSB is transmitted as the first part of access information 406_1 to 406_4, including, for example, PSS, PBCH, and SSS. In other words, Figure 13 Multiplexing mode #5 is demonstrated, in which TP-CORESET is transmitted immediately after SSB. This embodiment achieves additional energy savings by employing this new multiplexing mode, which tightly schedules the common signals in time.

[0223] In some embodiments, an indication of an alternative multiplexing mode may be sent via PBCH or MIB, or the UE may try multiple multiplexing modes (e.g., multiplexing modes 1 and 4) to determine the location where CORESET#0 and TP-CORESET are located.

[0224] 2. On-demand PBCH / MIB+SIB-1 In this embodiment, the PSS+SSS is broadcast in the conventional manner so that the user equipment (UE) can detect the cell during cell search / initial access. However, instead of broadcasting new signals for the PBCH / MIB, a three-level synchronization signal (TSS) is sent to indicate that the PBCH / MIB / SIB-1 is available for transmission on demand. The process in this embodiment is as follows: Figure 14As shown in the figure, this diagram illustrates the on-demand PBCH / MIB / SIB-1 implemented through TSS.

[0225] Specifically, Figure 14 The transmission process of initial access information 300 is illustrated schematically: as a normally open step 302, the first part 306_1 of the initial access information 300 is transmitted; as an additional step 303, trigger information 308 is transmitted, allowing the user equipment (UE) to execute trigger procedure 310, for example, triggering the transmission of the second part 306_2 of the initial access information 300; and as an on-demand step 306_2, in response to trigger procedure 310, the second part 306_2 of the initial access information 300 is transmitted. Therefore, the first part 306_1 of the initial access information 300 may include PSS and SSS, wherein trigger information 308 may include TSS, and the second part 306_2 of the initial access information 300 may include PBCH / MIB with SI, SIB-1 on PDSCH, other SIBs, and RA.

[0226] In some embodiments, the TSS is a sequence that can be detected using the same correlator as the PSS and / or SSS to avoid increasing hardware costs. Furthermore, in some embodiments, the TSS can be transmitted on the same OFDM symbol as the PSS or SSS to reduce power consumption, i.e., to allow symbols to be turned off when PBCH / MIB is not being transmitted.

[0227] Different sequences on the TSS may point to several predefined configurations that can be used to perform TP, such as sending C-WUS to initiate chain PBCH / MIB / SIB-1 on demand.

[0228] 3. PBCH / MIB-based implementation for on-demand SIB-1 For backward compatibility, the entire PBCH and MIB can be transmitted as in the traditional manner, but TP-info is included in the PBCH / MIB. Figure 15 illustrates this, showing a schematic diagram based on an embodiment of TP-info present on the PBCH / MIB.

[0229] Specifically, Figure 15The transmission process of initial access information 300 is illustrated schematically: as a normally open step 302, the first part 306_1 of the initial access information 300 is transmitted; as an additional step 303, trigger information 308 is transmitted, allowing the user equipment (UE) to execute trigger procedure 310, for example, triggering the transmission of the second part of the initial access information; and as an on-demand step 306_2, the second part 306_2 of the initial access information 300 is transmitted in response to trigger procedure 310. Therefore, the first part 306_1 of the initial access information may include PSS, SSS, PBCH, and MIB, wherein trigger information 308 can be transmitted via PBCH / MIB, while the second part 306_2 of the initial access information 300 may include DCI with SI-RNTI, SIB-1 on PDSCH, other SIBs, and RA.

[0230] It should be noted that, Figure 15 In this embodiment, the additional steps are shown in parallel with a portion of the first sequence steps, merely to illustrate that the first sequence steps and the additional steps may be performed in parallel in different embodiments (particularly in this embodiment).

[0231] In some embodiments, signaling can be obtained through the field K_ssb, which is derived from the ssb-SubcarrierOffset in the MIB and the PBCH encoding. One or more special values ​​of K_ssb (e.g., K_ssb=30 for FR1 and K_ssb=14 for FR2) can indicate that the cell is not currently broadcasting SIB-1, but can broadcast SIB-1 on demand. The UE can reinterpret the field pdcch-ConfigSIB1 to obtain the information needed to execute the trigger procedure, i.e., TP-info is encoded in pdcch-ConfigSIB1. Since only 8 bits are available in pdcch-ConfigSIB1, TP-info must be extremely concise. One feasible approach is to separate the bits of TP-Info (pdcch-ConfigSIB1): n bits are used for a simplified indication of the SS PBCH block (e.g., n=5), and 8-n bits are used as indices to a predefined set of TP information (time / frequency offset, RACH preamble, etc.).

[0232] Alternatively, the PBCH / MIB may include a separate indication that SIB-1 is possible on demand, for example, by utilizing a spare bit on the MIB. In this case, both k_ssb / ssb-SubcarrierOffset and pdcch-ConfigSIB1 can be reinterpreted as information forming simplified indications of the TP-Info and / or SS PBCH blocks.

[0233] The interpretation of TP-Info may depend on the specific frequency band, minimum system bandwidth, SSB SCS, PDCCH SCS, and the multiplexing mode between SSB and PDCCH (CORESET#0 or TP-CORESET).

[0234] Since SS PBCH blocks are typically sent in 7-bit form in SIB-1, the indication here may take on a different granularity (e.g., a 4 dB step size instead of a 1 dB step size for n=5).

[0235] For legacy UEs that do not support the On-Demand SIB1 feature: If a cell indicates itself as an "On-Demand SIB1" cell (e.g., indicated by SSB / MIB), the legacy UE may treat the cell as forbidden and react as if the cell forbidden flag were set.

[0236] 4. Examples of On-Demand SSB In the case of on-demand SSB, all steps of the regular initial access (including SSB and SIB-1) are performed on demand, but as with other embodiments, additional steps are required. These may include, for example, pre-SSB synchronization and sending TP-info.

[0237] As shown in Figure 16, for this type of on-demand SSB scenario with higher NES potential, normally open steps are limited to providing the necessary synchronization and TP-info steps required to perform TP.

[0238] Specifically, Figure 16 The transmission process of initial access information 300 is illustrated schematically: as an additional step 303, trigger information 308 is transmitted, allowing the UE to execute trigger procedure 310 (e.g., triggering the transmission of initial access information 300); and as an on-demand step 306_2, in response to trigger procedure 310, initial access information 300 is transmitted. Therefore, initial access information 300 may include PSS, SSS, PBCH and MIB, DCI with SI-RNTI, SIB-1 on PDSCH, other SIBs, and RA.

[0239] In some embodiments, the pre-SSB synchronization signal may be a simplified / reduced version of a regular SSB, which provides greater potential for the NES through the idle period of the gNB compared to a regular SSB. This pre-SSB synchronization signal (which may be a simplified version of the SSB, such as a discovery reference signal (DRS) or only includes a PSS) provides the UE with sufficient time and frequency synchronization, enabling the UE to perform TP in conjunction with TP-info to achieve the complete transmission of SSB and SIB1 required to complete the initial access procedure.

[0240] 5. Expand MIB A major drawback of the method described in Section 3 is that the amount of data that the TP-Info must carry is so small that important but non-essential information has to be omitted. This problem can be overcome by extending the MIB. To this end, spare bits present in the Rel-18 version MIB can be converted into an indication of the presence of the MIB extension. In this way, other important information (such as what has been described in Section 1.1, such as PLMN hash, target received power, RACH information, etc.) can be included in the MIB extension.

[0241] In an embodiment, the MIB extension may include at least one new spare bit.

[0242] In some embodiments, MIB extensions can be sent on the same symbols already used for PSS, SSS, and PBCH to avoid a significant increase in energy consumption; that is, OFDM symbols that no longer belong to SSB can be turned off.

[0243] 6. Adopt the redesigned MIB green space scheme While backward compatibility may exist in some embodiments, it is also possible to send all the information required by the embodiments on a newly designed MIB. This is a preferred embodiment, for example, for new systems such as 6G, which can take network power saving needs into account from the outset and support a mode of sending MSI only on demand.

[0244] The new MIB may include direct indications of on-demand MSI support, such as a one-bit indication (support for on-demand MSI). The new MIB may also include indexes for predefined configurations of C-WUS on the TP.

[0245] This new MIB may include fields already described in other chapters, such as: forbidden information, PLMN or NPN hash, SSPBCH power, target received power, RACH preamble, SSB location in a burst, SSB periodicity in the serving cell, TDD mode description, time alignment information, offset to point A, etc.

[0246] 7. Simplified SIB-1 including complete SIB-1 information. In some embodiments, TP-Info can be transmitted over the PDSCH. This is particularly useful if the TP-Info to be transmitted is a simplified version of SIB-1 (TP-Info can be described using RRC signaling / ASN1). For simplicity, and as an indication that the information was sent before SIB-1, this simplified version is called SIB-0. Figure 17 illustrates this embodiment, showing an example using a simplified SIB.

[0247] Specifically, Figure 17 The transmission process of initial access information 300 is illustrated schematically: as a normally open step 302, the first part 306_1 of the initial access information 300 is transmitted; as an additional step 303, trigger information 308 is transmitted, allowing the UE to execute trigger procedure 310, such as triggering the second part 306_2 of the initial access information 300; and as an on-demand step 306_2, in response to trigger procedure 310, the second part 306_2 of the initial access information 300 is transmitted. Therefore, the first part 306_1 of the initial access information may include PSS, SSS, PBCH, and MIB, wherein the trigger information 308 may include DCI with SI-RNTI, and the second part 306_2 of the initial access information may include DCI with SI-RNTI, SIB-1 on PDSCH, other SIBs, and RA.

[0248] This embodiment can be implemented using existing SI-RNTI. One of the reserved bits in DCI_1_0 scrambled by SI-RNTI can be defined to extend the "System Information Indicator" field from 1 bit to 2 bits. For example, a new value can be added to Table 7.3.1.2.1-2 in [6] to inform the UE of the information required to perform the on-demand SSB and / or MSI triggering procedure. This could be, for example, a "TPInfo", "C-WUS info", "SIB-0", or "pre-SIB-1" value. In addition, although a new RNTI could be set for this case, it is not absolutely necessary.

[0249] The disadvantage of this embodiment is that it requires PDSCH transmission, which may reduce energy efficiency. Therefore, this embodiment is only meaningful when the information required by the triggering procedure (TP) is much less than that in the complete SIB-1. One potential implementation is that SIB-0 only includes the fields required to initiate the TP. For example, existing mechanisms for triggering other SIs on demand can be reused, in which case SIB-0 may include SI-RequestConfig ([2]). For performance considerations and early feasibility assessments, some other SIB-1 fields may be repeated in SIB-0 (e.g., similar to those discussed in Section 1.1). 7.1 Reuse Mode In this embodiment, TP-Info can be transmitted via PDSCH, for example as a new (simplified) SIB, while also defining the position of PDSCH relative to SSB and CORESET. All information can be efficiently packaged (e.g., from an energy consumption perspective) for transmission to a specific beam. The multiplexing mode considered in Section 1.2 can also be extended to define the position of PDSCH relative to SSB and CORESET (CORESET#0 and / or TP-CORESET). Figure 18 , 19 And 20 provided an explanation for this.

[0250] Specifically, Figure 18 A schematic diagram of a multiplexing mode including four beams 402_1 to 402_4 is shown. In each beam 402_1 to 402_4, trigger information and the first part of access information are multiplexed. The trigger information is transmitted via a symbol PDSCH405_1 to 405_4 after the first part of access information 406_1 to 406_4 and TP CORESET 404_1 to 404_4. Figure 18 For example, the SSB is transmitted as the first part of access information 406_1 to 406_4, including, for example, the PSS, PBCH, and SSS. In other words, Figure 18 A schematic diagram of multiplexing mode #4 is shown, where PDSCH (carrying TP information) immediately follows SSB. Here, TP-CORESET can be CORESET#0. For example... Figure 18 As shown, PDSCH is sent after SSB, which still results in all beams being transmitted in a highly dense time.

[0251] Figure 19 A schematic diagram of a multiplexing mode comprising four beams 402_1 to 402_4 is shown, wherein in each beam 402_1 to 402_4, trigger information and the first part of access information are multiplexed. The trigger information is transmitted via PDSCH 405_1 to 405_4, overlapping in time with the first part of access information 406_1 to 406_4, and located after TP CORESET 404_1 to 404_4. Figure 19 For example, the SSB is transmitted as the first part of access information 406_1 to 406_4, including, for example, the PSS, PBCH, and SSS. In other words, Figure 19 A schematic diagram of multiplexing mode #4 is shown, where PDSCH (carrying TP information) runs in parallel with SSB and follows SSB. Here, TP-CORESET can be CORESET #0. For example... Figure 19As shown, PDSCH is transmitted not only after SSB but also in parallel. This can potentially add extra capacity to SIB-0 with almost no additional power consumption.

[0252] Figure 20 illustrates a multiplexing mode comprising four beams 402_1 to 402_4. In each beam 402_1 to 402_4, trigger information and the first part of access information are multiplexed. The trigger information is transmitted via PDSCH 405_1 to 405_4 after the first parts of access information 406_1 to 406_4 and after TP CORESET 404_1 to 404_4. Figure 20 For example, as the first part of access information 406_1 to 406_4, an SSB is transmitted, which may include PSS, PBCH, and SSS. In other words, Figure 20 A schematic diagram of multiplexing mode #5 is shown, where PDSCH (carrying TP information) is located after TP-CORESET. Here, TP-CORESET can be CORESET #0. In other words, Figure 20 This illustrates the potential location of SIB-0 PDSCH in reuse mode #5.

[0253] 8. Progressive Information In some embodiments, information may be sent incrementally based on multiple triggers. Figure 21 This is explained in the diagram, which shows a schematic of a general program that includes multiple triggers.

[0254] Specifically, Figure 21 The transmission process of initial access information 300 is illustrated schematically. For example, in a normally open step 302 (e.g., steps 1 to M, where M is a natural number greater than or equal to 1), a first portion 306_1 of the initial access information 300 is transmitted; in an additional step 303 (e.g., steps A.1 to A1), trigger information 308 is transmitted, allowing a user equipment (UE) to execute at least one first trigger procedure 310_1, for example, to trigger a second portion 306_2 of the initial access information 300; for example, in a first on-demand step 304_1 (e.g., steps M+1 to M+X, where N is a natural number greater than M), in response to the first trigger procedure 310_1, the second portion 306_2 of the initial access information 300 is transmitted; and for example, in a second on-demand step 304_2 (e.g., steps M+X+1 to N, where N is a natural number greater than M+X), in response to the second trigger procedure 310_2, a third portion 306_3 of the initial access information 300 is transmitted.

[0255] With basic procedures (see) Figure 7 and Figure 8 In contrast, the initial access is split into more than two sequence steps, and each trigger procedure (TP) activates the subsequent sequence steps.

[0256] 9. Triggered via side link relay In Releases 17 and 18, 3GPP focused on researching sidelink relay technology, in which a source remote UE connects to a relay UE via a sidelink (PC5), which then forwards information to a target remote UE (U2U case), a base station (U2N case), or another transceiver using a 3GPP or non-3GPP connection.

[0257] Figure 22 illustrates an example sidelink relay scenario. As shown in Figure 22, a U2N remote UE 602 located outside coverage (OOC) can communicate with gNB 606 via a sidelink (e.g., using the PC5 interface) through U2N relay UE 604. U2N relay UE 604 uses the Uu interface to forward information to or receive information from gNB 606. Furthermore, another UE 608 may be simultaneously connected to U2N relay UE 604 and directly connected to gNB 606, thus utilizing the advantages of multipathing.

[0258] In some embodiments, a remote UE can establish an RRC connection with a network (e.g., a base station or MNO network) via a relay UE. This connection can be established even when the UE is in an OOC or IC state, provided the relay UE is capable of establishing a connection with the network or other transceivers.

[0259] In some embodiments, if a remote UE is located within the coverage area of ​​a base station in DTX mode, there may be no signal or only a partial signal broadcast in that cell. If a relay UE has established a connection with that cell or another cell, the remote UE can send a signal via relay to request that cell to broadcast a set of basic system information (e.g., MIB, SIB-0, SIB-1).

[0260] In some embodiments, a relay UE does not need to be connected to the same cell, but can forward information to the network to determine whether and which cells should be configured to start broadcasting system information.

[0261] In some embodiments, the cell wake-up signal is transmitted from a remote UE to one or more cells on the same or another frequency via one or more relay UEs as a MAC CE, RRC or other form of control message.

[0262] In some embodiments, the relay UE may also forward this information in the downlink. This would include sending the TP to UEs outside the coverage area. This would help UEs outside the coverage area determine the format and extract the information needed to trigger the downlink signal.

[0263] In some embodiments, if a UE is entering the cell and reaching the cell's coverage area, it can trigger the procedure itself, or as described above, trigger the procedure through a relay UE.

[0264] In this situation, a relay UE located at the cell edge may continue to broadcast information for a period of time so that the user equipment that is handing over to the cell can understand in advance how to access additional information and trigger the cell to send information to it.

[0265] Figure 23 A schematic diagram illustrating an exemplary sidelink relay scenario is shown. For example... Figure 23 As shown, a U2N remote UE 602 located outside coverage (OOC) can communicate with the first gNB 606 via a sidelink (e.g., using a PC5 interface) through a U2N relay UE 604, where the U2N relay UE 604 uses its Uu interface to forward or receive information from the first gNB 606. Furthermore, another user equipment (UE) 608 may be simultaneously connected to another U2N relay UE 610 and directly connected to the first gNB 606, where the other U2N relay UE 610 is connected to a second gNB 612 via its Uu interface. Figure 23 As shown, inter-cell coordination may occur between the two gNBs 606 and 612.

[0266] 10. Broadcast via sidelink Similar to the embodiment in the previous section, this information can also be transmitted via the side link itself. In this case, the UE can store transmission parameters (TP) and broadcast them to other UEs. When the cell is completely shut down, this information can be sent entirely via the side link; alternatively, some information can be transmitted by the cell and some by the side link. The UE will continue to broadcast this information until the cell resumes normal operation.

[0267] For example, when a cell is partially or completely shut down, certain user equipment groups can be selected to broadcast this information.

[0268] According to Section 12.3 below, notifications regarding the cessation of transmission of any public signals by the cell can also be broadcast via a sidelink.

[0269] Information about the specific technology used in a cell can even provide guidance to a UE that is reselecting the cell.

[0270] 11. Mixing Method Of course, the features of the above embodiments can be combined in further embodiments.

[0271] For example, in one embodiment, PBCH / MIB signaling (see Sections 2, 3, and 4) can provide early information about cell inaccessibility and the on-demand presence of SIB-1. Then, DCI signaling provides early feasibility information, such as PLMN hashes (see Section 1), and scheduling information to simplify SIBs (e.g., SIB-0). Finally, SIB-0 provides information for sending uplink requests to trigger (full) SIB-1 on demand, as described in Section 5.

[0272] In some embodiments, to prevent user equipment (UE) from attempting to connect to the network via the RA (retransmission) procedure, cell access denial information needs to be provided at a very early stage. Although UAC information is optional in SIB-1, it can be included as part of SIB-0, either in its full version or a simplified / compressed version, to include the minimum set of information for the UE.

[0273] In this embodiment, SIB-1 includes optional UAC parameters that can be bound to the PLMN. This information can be used to acquire the PLMN of the wake-up signal. Therefore, in the following examples, elements conforming to the embodiment are underlined:

[0274] 12. Provide TP information before network adaptation or UE timeout. In some embodiments, the network may decide to halt regular SSB and / or SIB-1 transmissions even if some UEs remain connected. In this case, these connected UEs may receive TP information as dedicated signaling from the network, enabling UEs originally located in that cell to perform TP and remain camped in that cell. This may involve changing the UE state to RRC_INACTIVE or RRC_IDLE. If only these UEs are able to perform TP, the TP may not be broadcast but sent only via dedicated signaling.

[0275] In some embodiments, a TP (Transition Point) message is sent when the network suspends the RRC connection (switching from the RRC_CONNECTED state to the RRC_INACTIVE state). That is, the TP message can be included in suspendConfig (TR 38.331). In this case, if the UE needs to return to the RRC_CONNECTED state (to process new traffic), the UE must first perform a TP operation before restoring the RRC connection.

[0276] 12.1 UE notification before cell handover to "on-demand SIB (e.g., SIB1) configuration" For energy-saving reasons, any cell that broadcasts complete system information (such as SSB / MIB and SIB) may be converted into a cell that only transmits SSB / MIB. That is, SIB (such as SIB1) will no longer be transmitted by the cell regularly, but only on demand.

[0277] In a specific embodiment, when a cell switches from "full broadcast mode" (i.e., periodically sending SSB / MIB and SIB-1) to "SIB1 on-demand mode" due to any condition (see the following paragraph), the cell may use one of the following options to transmit a notification to the UE (e.g., notifying the UE that the cell configuration has changed): - Switching to "On-Demand SIB1" cells is applied only at the time when a "regular" SSB / MIB including an indication is sent, when the user equipment is permitted to send a "Request SIB1 Notification" to the cell, for example, using... pdcch-ConfigSIB or any other existing or new (additional) MIB parameter that provides uplink configuration / location information for the UE to use in sending SIB (e.g., SUB1) transmission requests to the cell, and / or The pdcch-ConfigSIB in the MIB splits or expands the current 8 bits that include uplink configuration / UE location information so that it can be used to send SIB (e.g., SIB1) transmission requests to the cell.

[0278] - The indication to switch to the "on-demand SIB1" cell may be included in any SIB (e.g., the last regularly sent regular SIB1). Optionally, the same SIB (e.g., SIB1) may also provide uplink configuration / location information for the UE to send an SIB (e.g., SIB1) transmission request to the cell.

[0279] - A timer or countdown indicates to the UE that a change is imminent.

[0280] 12.2 Conditions for switching a cell to "On-Demand SIB Configuration" In some embodiments, the conditions under which a cell switches from full SSB / MIB / SIB periodic broadcasting to SSB / MIB periodic broadcasting only, combined with on-demand SIB broadcasting, may include: - Based on load conditions, for example, whenever the cell load falls below a defined threshold, the cell can switch to "on-demand SIB (e.g., SIB1) configuration".

[0281] Optionally, this applies only to secondary cells.

[0282] - UE RRC Status: If there is no UE in a connected RRC state in a given cell (e.g., the UE is only in an idle or idle and inactive RRC state), the cell may switch to an "on-demand SIB (e.g., SIB1) configuration" under the following conditions: When the last UE in a given cell that is in RRC connected state switches to RRC idle or RRC inactive state, the cell initiates an internal procedure to switch to "on-demand SIB (e.g., SIB1) configuration", and / or When the last UE in RRC connected state in a given cell switches to RRC idle mode, the cell waits for a defined given time period (e.g., based on a timer). After the timer expires, the cell initiates an internal procedure to switch to "on-demand SIB (e.g., SIB1) configuration".

[0283] Note: These two options are only applicable to sub-cells. -At the request of the primary cell, the secondary cell can switch to "on-demand SIB (e.g., SIB1) configuration".

[0284] 13. Trigger Options Within the scope of this invention, a trigger procedure (TP) refers to a method by which a network element triggers a change in order to send an MSI on demand. In many cases, this network element may be a UE (User Equipment). For example, the TP may be: Cell wake-up signals within the same frequency band / cell Cell wake-up signal on another frequency band / cell LTE cell wake-up signal Cell wake-up signal relayed via side link Triggering messages through the core network However, the network / gNB can also achieve this without involving the UE by switching between broadcasting TP-info or MSI. For example: According to the schedule via Xn signaling Through O&M Through core signaling 14. Further detailed embodiments In this section, the various aspects discussed will be combined in further detail to form specific embodiments. This is for illustrative purposes only, and the combinations of elements described herein are neither limiting nor a minimum set of elements. Rather, their purpose is to illustrate what forms specific embodiments might take.

[0285] For simplicity, the TP-Info in this section is a simplified version of SIB-1, including information elements similar to those in SIB-1 (which may have been renamed). As described in Section 7, it may only include the fields required to initiate the trigger procedure (TP). For example, this might include ssb_PositionsInBurst, essentially the downlink configuration (e.g., frequencyInfoUL based on SIB-1), RACH information (e.g., rach_ConfigCommon based on SIB-1), power information (e.g., based on ss_PBCH_BlockPower), TDD configuration (e.g., based on tdd_UL_DL_ConfigurationCommon for TDD bands), and information for listening to SIB-1 (e.g., based on MIB / SIB-1 pdcch_ConfigCommon). Additionally, TP-Info may include content equivalent to SIB-1 cellAccessRelatedInfo to quickly identify the operator to which the cell belongs. While all this information is not small in size, it is still much smaller than the complete SIB-1.

[0286] As described in the previous section, TP can be, for example, a "cell wake-up signal on the same frequency band / cell" or a "cell wake-up signal on another frequency band / cell". Clearly, the first case refers to TP-Info being sent on the same frequency band or cell where the TP is performed, while the second case refers to TP-Info being sent on a different frequency band or cell than where the TP is performed. For simplicity, these two cases are discussed separately, but they may share the same TP-Info basis described above, as well as the same triggering procedure when applying on-demand SIB-1 in the target cell. They can even be used in a complementary manner within the same deployment. For example, a user equipment (UE) might receive TP-Info in one cell and request SIB-1 in another cell to camp on that cell. Subsequently, when the UE needs to update its SIB-1 and is already camped on a cell applying on-demand SIB-1, it can obtain TP-Info directly from the target cell. Therefore, in this example, at different times and in different procedures, the user equipment can obtain TP-Info in other cells or directly in the target cell transmitting C-WUS. In short, during the initial cell selection process, the user equipment can obtain TP-Info in any cell (the target cell or other cells) to expedite the procedure.

[0287] 14.1 Transmit TP-Info in another frequency band / cell (different from the TP execution location) This may be a preferred implementation when a gNB manages multiple cells on different frequency bands, and some frequency bands periodically broadcast SIB-1 and other SIBs, while other frequency bands use SIB-1 on demand.

[0288] In this embodiment, following the general procedure, the additional steps for obtaining TP-Info are performed in one cell, while the TP and on-demand steps are performed in the target cell.

[0289] The frequency band of the broadcast SI can transmit TP-Info for multiple cells. This is true for example, when a macro cell transmits TP-Info for multiple small cells, or when a frequency band needs to transmit TP-Info associated with multiple frequency bands. In these cases, the TP-Info can be tagged with cell identifiers (such as PCI and frequency (e.g., ARFCN)). For example, the TP-Info may include one or more of the following: PCI ARFCN, ssb_PositionsInBurst, Basically, it's a crosslink configuration (e.g., SIB-1 based frequencyInfoUL). RACH information (e.g., rach_ConfigCommon based on SIB-1). Power information (e.g., based on ss_PBCH_BlockPower). TDD configuration (e.g., for TDD bands, based on tdd_UL_DL_ConfigurationCommon). Information used to monitor SIB-1 (e.g., based on MIB / SIB-1 pdcch_ConfigCommon).

[0290] Because certain frequency bands periodically broadcast SIs, TP-Info (e.g., information for other cells) can be placed in a container, such as a new SIB, that includes the TP-Info for each of the other cells. This new SIB can be sent via regular SI scheduling or using other SI mechanisms. Alternatively, the TP-Info for other cells can also be included in existing SIBs, such as SIB-1, SIB-3, or SIB-4.

[0291] 14.2 Transmit TP-Info on the same frequency band / cell where TP is performed. In this embodiment, the simplified SIB-1 is transmitted directly in the target frequency band (e.g., as described in Section 7). A specific value for K_ssb (e.g., K_ssb=30 for FR1, K_ssb=14 for FR2) indicates that the cell is not currently broadcasting SIB-1, but may broadcast it on demand (e.g., as described in Section 3). The UE can listen to CORESET#0 to obtain SI-RNTI, and DCI_1_0 can be extended to have a value with scheduled TP-Info (e.g., a pre-SIB-1 or SIB-0 value). However, when the cell is in a state of transmitting TP-Info (currently applying on-demand SIB-1), the UE may perceive that pdcch_ConfigSIB1 may change, determined by comparing the specific value of k_ssb with the cell's current state of broadcasting SIB-1. These two states can be identified by changes in the k_ssb value, i.e., from a specific value to a regular value, and vice versa. Using different k_ssb values ​​in these two different states allows the network to switch between an energy-efficient multiplexing mode (see Sections 1.2 and 7.1) and a regular multiplexing mode. The former may not be able to carry a large number of bytes, while the latter, although less energy efficient, can carry the larger payload included in the full SIB-1.

[0292] The TP-Info monitoring mode in CORESET#0 may be sparser and more optimized than SIB-1 monitoring. For example, within a 160 ms period, TP-Info might be transmitted four times consecutively at 20 ms intervals, each with a different redundant version (RV), and then not transmitted again until the next 160 ms period. The UE may be aware of this pattern and optimize reception and its own power consumption accordingly. This can be achieved, for example, by a fixed pattern for a given SSB periodicity. For example, for a 20 ms SSB period, the UE only needs to search for frames that include the SSB and satisfy (SFN / 8) mod 2 = 0. This will cause the UE to search for TP-Info only in the first four SSB periods, skipping the last four periods. For a 10 ms SSB period, four TP-Info receptions can be performed in parallel with the SSB, thus improving efficiency. Therefore, the rule could be set for all system frames that satisfy SFN mod 16 equals 0, 1, 2, or 3. In this way, the UE can search for TP-Info in four frames and then sleep for twelve frames. If the WUS configuration transmission period differs from the SIB-1 period (e.g., 160 ms), these rules can be adjusted accordingly. For example, if the WUS configuration period is 320 milliseconds, and SSB frames are transmitted every 20 milliseconds, the transmission mode of the WUS configuration can be set to frames that satisfy SFN / 2 modulo 16 remainders of 0, 1, 2, and 3; to improve efficiency, transmission is only performed on SSB frames with efficient multiplexing modes (see Sections 1.2 and 7.1). Figure 24 shows an example of this mode. Of course, this concept also applies to cases with offsets, such as (SFN / 2 + offset) mod 16 matching 0, 1, 2, and 3.

[0293] Specifically, Figure 24 The diagram schematically illustrates the transmission process of the first part of the access information, 700_1 to 700_20, and the triggering information, 702_1 to 702_8. This information enables the UE to trigger the transmission of the second part of the access information. Therefore, in Figure 24 In this example, it is assumed that the first parts of the access information, 700_1 to 700_20, are their respective SSBs. In other words, Figure 24 An example of an efficient sparse pattern for TP-Info is shown, applicable only to frames that also include an SSB. Different redundant versions can be used for each transmission.

[0294] Monitoring of the paging channel (e.g., using P-RNTI) can be performed either in the regular CORESET#0 mode (when the cell is broadcasting SIB-1) or in the CORESET mode when broadcasting TP-Info.

[0295] In some embodiments, DCI_1_0 can also be extended to include a PLMN hash (e.g., as described in other sections) or cellAccessRelatedInfo. Furthermore, DCI_1_0 may include new information regarding the validity of the SIB-1. For example, this could be validity, version, or value flags. For instance, if the SIB-1 version field is 2 bits and the UE stores an SIB-1 with version 01, the UE needs to periodically listen to this field. If the version differs from the value currently stored by the UE (10 or 11), the UE needs to re-acquire the SIB-1.

[0296] 14.3 Further Details The embodiments described herein provide significant energy savings while achieving initial access performance. High backward compatibility is also achieved.

[0297] The embodiments described herein can be applied to network energy saving in wireless networks.

[0298] The embodiments described herein address the problem that SSB and SIB-1 transmission on all carriers and in multiple directions on each carrier results in excessive power consumption when there is no traffic.

[0299] The embodiments described herein address the following problem: On-demand SSB and On-demand SIB-1 show great potential in [3], but how to actually implement them is not described.

[0300] The embodiments described herein provide a general approach to on-demand information. In these embodiments, note that information can be broken down into other steps, not just on-demand SSB and on-demand SIB-1.

[0301] The embodiments described herein provide a very detailed signaling design for each embodiment.

[0302] The embodiments described in this article provide an efficient multiplexing mode for NES / beam scanning.

[0303] The embodiments described in this article provide a practical solution for on-demand SIB-1. The embodiments described herein provide a better alternative to the on-demand SIB-1 described in [3].

[0304] Various elements and features of the present invention can be implemented in hardware via analog and / or digital circuits, or in software by executing instructions through one or more general-purpose or special-purpose processors, or as a combination of hardware and software. For example, embodiments of the present invention can be implemented in a computer system or other processing system environment. Figure 25An example of a computer system 500 is shown. Various units or modules, and method steps performed by these units, can run on one or more computer systems 500. The computer system 500 includes one or more processors 502, such as dedicated or general-purpose digital signal processors. The processors 502 are connected to a communication infrastructure 504, such as a bus or network. The computer system 500 includes main memory 506 (e.g., random access memory (RAM)) and secondary memory 508 (e.g., hard disk drives and / or removable storage drives). The secondary memory 508 allows computer programs or other instructions to be loaded into the computer system 500. The computer system 500 may also include a communication interface 510 for transferring software and data between the computer system 500 and external devices. Communication can be electronic, electromagnetic, optical signals, or other signal forms that can be processed by the communication interface. Communication can use wires or cables, optical fibers, telephone lines, cell phone links, radio frequency (RF) links, and other communication channels 512.

[0305] The terms "computer program medium" and "computer-readable medium" generally refer to tangible storage media, such as removable storage units or hard disks installed in hard disk drives. These computer program products are means of providing software to computer system 500. The computer program (also referred to as computer control logic) is stored in main memory 506 and / or auxiliary memory 508. The computer program may also be received via communication interface 510. When executed, the computer program enables computer system 500 to implement the present invention. Specifically, when executed, the computer program enables processor 502 to implement the processing procedures of the present invention, such as any of the methods described herein. Therefore, such a computer program can represent a controller of computer system 500. When the present disclosure is implemented in software, the software may be stored in the computer program product and loaded into computer system 500 via an interface such as a removable storage drive or similar communication interface 510.

[0306] The hardware or software implementation can be performed using digital storage media, such as cloud storage, floppy disks, DVDs, Blu-ray discs, CDs, ROMs, PROMs, EPROMs, EEPROMs, or flash memory, which store electronically readable control signals that work in conjunction with (or are capable of working in conjunction with) a programmable computer system to execute corresponding methods. Therefore, the digital storage medium can be read by a computer.

[0307] According to some embodiments of the present invention, a data carrier is included having electronically readable control signals thereon, which are capable of cooperating with a programmable computer system to perform one of the methods described herein.

[0308] Generally, embodiments of the present invention can be implemented as a computer program product including program code, which, when run on a computer, performs one of the methods. For example, the program code may be stored on a machine-readable medium.

[0309] Other embodiments include a computer program for performing one of the methods described herein, the program being stored on a machine-readable medium. In other words, one embodiment of the method of the invention is therefore a computer program having program code for performing one of the methods described herein, when the computer program is run on a computer.

[0310] Therefore, another embodiment of the method of the present invention is a data carrier (or digital storage medium, or computer-readable medium) on which a computer program for performing one of the methods described herein is recorded. Therefore, another embodiment of the method of the present invention is a data stream or signal sequence representing a computer program for performing one of the methods described herein. This data stream or signal sequence may be configured to be transmitted via a data communication connection (e.g., via the Internet). Another embodiment includes a processing device, such as a computer or programmable logic device, configured or adapted to perform one of the methods described herein. Another embodiment includes a computer on which a computer program for performing one of the methods described herein is installed.

[0311] In some embodiments, a programmable logic device (e.g., a field-programmable gate array) may be used to perform some or all of the functions of the methods described herein. In some embodiments, the field-programmable gate array may work in conjunction with a microprocessor to perform one of the methods described herein. Generally, these methods are preferably performed by any hardware device.

[0312] The above embodiments are merely illustrative of the principles of the present invention. It will be apparent to those skilled in the art that various modifications and variations can be made to the arrangements and details described herein. Therefore, the present invention is limited only by the scope of the claims to be claimed, and not by the specific details presented herein through the description and explanation of the embodiments.

[0313] Reference List [1]TS 38.300 v17.6.0 “NR; General Description of NR and NG-RAN”, September 2023 [2]TS 38.331 v17.6.0 “NR; Radio Resource Control (RRC); Protocol Specification”, September 2023 [3] TR 38.864 v18.1.0 “Research on Energy Saving in NR Networks”, March 2023 [4]TS 38.213 v17.7.0 “NR; Control Physical Layer Program”, September 2023 [5]TS 38.211 v17.6.0 “NR; Physical Channel and Modulation”, September 2023 [6]TS 38.212 v17.6.0 “NR; Multiplexing and Channel Coding”, September 2023 abbreviation 3GPP Third Generation Partnership Project ACK confirmation ARFCN Absolute Radio Frequency Channel Number BFD Beam Fault Detection BFR beam fault recovery BRP Beamforming Resource Pool BWP bandwidth portion BS base station CD-SSB cell definition synchronization signal block CDM code division multiplexing CG Configuration License CRICSI-RS Resource Indicator CQI channel quality information CSI Channel Status Information CSI-RS Channel State Information - Reference Signal D2D equipment room DC Dual Connection DCI downlink control information DL downlink DM-RS demodulation reference signal DRS detected a reference signal. DRX stopped receiving. DTX stopped transmitting. EARFCNE-UTRA Absolute Radio Frequency Channel Number eNB Evolution Node B FR frequency range FR1 frequency range one FR2 frequency range two gNB Next Generation Node B GSCN Global Synchronization Channel Number HARQ Hybrid Automatic Repeat Request The IC is within coverage area – located within the coverage area of ​​another transceiver. ID identifier Inverse Fast Fourier Transform (IFFT) IoT Out of Coverage (OOC) – This refers to being outside the coverage area of ​​another transceiver, i.e., outside the coverage area of ​​the base station. LTE Long Term Evolution MAC Media Access Control MAC-CE Media Access Control – Control Elements MCC Mobile Country Code MCG main cell group MIB Master Information Block MNC mobile network code MSI Minimum System Information NACK (Negative Confirmation) NCD-SSB Non-cell Defined Synchronization Signal Block NES network energy saving NPN (Non-Public Network) NR New Radio NTN non-terrestrial network OFDM (Orthogonal Frequency Division Multiplexing) OFDMA (Orthogonal Frequency Division Multiple Access) PBCH Physical Broadcast Channel PC partial coverage – one transceiver is within coverage area, and the other is outside coverage area. PC5 uses a sidelink channel for inter-device communication. PDCCH Physical Downlink Control Channel PDSCH Physical Downlink Shared Channel PLMN Public Land Mobile Network PMI Precoding Matrix Indicator PRACH Physical Random Access Channel PRS positioning reference signal PSBCH Physical Side Link Broadcast Channel PSCCH Physical Side Link Control Channel PSFCH Physical Side Link Feedback Channel PSS master synchronization signal PSSCH Physical Side Link Shared Channel PUCCH Physical Uplink Control Channel PUSCH Physical Uplink Shared Channel QCL Quasi-Co-location RACH Random Access Channel RAN wireless access network RB resource blocks RE Resource Elements RedCap's capabilities are limited. RMSI Remaining Minimum System Information RNTI Radio Network Temporary Identifier RRC Radio Resource Control RS reference signal RSRP reference signal received power RSRQ reference signal reception quality SCI sidelink control information SCG Sub-Community Group SCS subcarrier spacing SI System Information SIB System Information Block SL side link SNPN (Standard Non-Public Network) SPS semi-persistent scheduling SR scheduling request SRS sounding reference signal SSB Synchronization Signal Block SSS secondary synchronization signal S-SSB Side Link Synchronization Signal Block sTTI Short Transmission Time Interval SUL Assisted Uplink TDD Time Division Duplex TP trigger program TRS Tracking Reference Signal UAC Unified Access Control UE user equipment, such as smartphones or IoT nodes UL uplink UMTS Universal Mobile Communication System V2X vehicle-to-everything (V2X) V2V car to car x-MSI cross-carrier minimum system information.

Claims

1. A base station (200) for a wireless communication network. in, The base station (200) is configured as a cell serving a wireless communication network. The base station (200) is configured to transmit access information (300) to enable one or more user equipments to access the cell. The base station (200) is configured to transmit the access information (300) in an energy-saving operation mode by transmitting the following: -The first part (306_1) of the access information (300), and - Triggering information (308), which enables the user equipment (2021) to trigger the transmission of the second part (306_2) of the access information (300).

2. The base station (200) according to claim 1. in, The base station (200) is configured to transmit the access information (300) in the energy-saving operation mode by transmitting the following: - The second part (306_2) of the transmission access information (300) received in response to the trigger signal (310).

3. The base station (200) according to the preceding claim. in, The first part (306_1) and the second part (306_2) of the access information (300) are derived from the access information.

4. The base station (200) according to any one of the preceding claims. in, The access information (300) includes synchronization signals and / or system information.

5. The base station (200) according to claim 4. in, The first part (306_1) of the access information (300) includes only the first part of the synchronization signal and / or system information. The second part (306_2) of the access information (300) includes at least the second part of the synchronization signal and / or system information.

6. The base station (200) according to claim 4 or 5. in, The access information (300) includes at least two of the following: -Main synchronization signal, - First synchronization signal -Master Message Block (MIB) - A System Information Block 1 (SIB-1). - Another system information block.

7. The base station (200) according to any one of the preceding claims. in, The base station (200) is configured to transmit complete access information in normal operating mode.

8. The base station (200) according to any one of the preceding claims. in, The first part (306_1) of the access information (300) includes information indicating whether to transmit the trigger information (308).

9. The base station (200) according to any one of the preceding claims. in, The base station (200) is configured to transmit first signaling information indicating whether and / or when the triggering information (308) and / or the second part (306_2) of the access information (300) are transmitted.

10. The base station (200) according to any one of the preceding claims. in, The base station (200) is configured to transmit second signaling information indicating whether and / or when the base station (200) will switch between the energy-saving operation mode and the normal operation mode.

11. The base station (200) according to any one of the preceding claims. in, The base station (200) is configured to receive only these random access signals carrying the trigger signal (310) in the energy-saving operation mode.

12. The base station (200) according to any one of claims 1 to 11. in, The base station (200) is configured to transmit the trigger information (308) using beamforming along multiple beamforming directions.

13. The base station (200) according to any one of the preceding claims. in, The trigger signal (310) is a wake-up signal transmitted on the same cell as the access information (300), wherein the trigger information (308) describes the time and / or frequency resources used to transmit the trigger signal (310). Alternatively, the trigger signal (310) may be a wake-up signal transmitted on a different cell than the access information (300), wherein the trigger information (308) describes how to access the other cell for transmitting the trigger signal (310). Alternatively, the trigger signal (310) may be transmitted on an LTE cell, wherein the trigger information (308) describes the frequency of the LTE cell used to transmit the trigger signal (310). Alternatively, the trigger signal (310) may be transmitted via a side link, wherein the trigger information (308) describes a side link resource pool for transmitting the trigger signal (310).

14. The base station (200) according to any one of claims 1 to 13. in, The second part (306_2) of the access information (300) includes system information block one (SIB-1).

15. The base station (200) according to claim 14. in, The triggering information (308) is transmitted through the first downlink control information. The second part (306_2) of the access information (300) includes second downlink control information. The first downlink control information and the second downlink control information are associated with different Radio Network Temporary Identifiers (RNTIs).

16. The base station (200) according to claim 14 or 15. in, The first downlink control information is transmitted on control resource set zero (CORESET#0).

17. The base station (200) according to any one of claims 14 to 16. in, The base station (200) is configured to periodically transmit the first portion (306_1) of the access information (300) including system information block one (SIB-1) in a first cycle. The base station (200) is configured to transmit additional information, including the triggering information (308) and information describing the first period of the periodic transmission of the first portion (306_1) of the access information (300) including the system information block one (SIB-1). The second part (306_2) of the access information (300) further includes a system information block one (SIB-1), wherein the base station (200) is configured to periodically transmit the second part (306_2) of the access information including the system information block one (SIB-1) in a second period less than the first period in response to the reception of the trigger signal (310).

18. The base station (200) according to any one of claims 14 to 17. in, The base station (200) is configured to transmit additional information including the trigger information (308) and a portion of the system information block one (SIB-1).

19. The base station (200) according to claim 18. in, The portion of System Information Block 1 (SIB-1) comprises at least one of the following: - The first instruction indicates whether the community is off-limits. - The second instruction indicates whether a specific group of user equipment should treat the cell as blocked. - The third instruction indicates whether IMS emergency calls are supported. - Hash version of the Public Land Mobile Network (PLMN) - Describe information that includes at least one of the following: SSB location, SSB period, TDD mode, time alignment, and offset.

20. The base station (200) according to any one of claims 14 to 19. in, The base station (200) is configured to transmit the first downlink control information multiplexed with the synchronization signal block.

21. The base station (200) according to claim 20. in, The base station (200) is configured to transmit the first downlink control information and the synchronization signal block in the same time slot.

22. The base station (200) according to claim 21. in, The base station (200) is configured to transmit the first downlink control information and the synchronization signal block on different symbols of the same time slot.

23. The base station (200) according to any one of claims 1 to 13. in, The first part (306_1) of the access information (300) includes a primary synchronization signal block and a secondary synchronization signal block. The second part (306_2) of the access information (300) includes the main information block (MIB) and the system information block one (SIB-1). The trigger information (308) is a three-level synchronization signal, indicating that the second part (306_2) of the access information (300) is transmitted in response to the trigger signal (310).

24. The base station (200) according to any one of claims 1 to 13. in, The first part (306_1) of the access information (300) includes a master information block (MIB). The second part (306_2) of the access information (300) includes system information block one (SIB-1). The triggering information (308) is included in the main information block (MIB).

25. The base station (200) according to claim 24, in, The trigger information (308) is included in the main information block (MIB) via the K-ssb value. Alternatively, the trigger information (308) may be included as a separate marker in the main information block (MIB).

26. The base station (200) according to claim 24. in, The main information block (MIB) is an extended main information block, which includes at least one bit indicating that an extended portion of the main information block is transmitted.

27. The base station (200) according to claim 24. in, The triggering information (308) is included in the main information block (MIB) by directly indicating that the transmission of the second part (306_2) of the access information (300) will be triggered by the triggering signal (310).

28. The base station (200) according to claim 27. in, The trigger signal (310) is a wake-up signal.

29. The base station (200) according to any one of claims 1 to 13. in, The first part (306_1) of the access information (300) includes a master information block (MIB). The second part (306_2) of the access information (300) includes system information block one (SIB-1). The base station (200) is configured to transmit additional information including a portion of system information block one, wherein the portion of system information block one includes only a part of the system information block one. The first part of the system information block includes the triggering information.

30. The base station (200) according to claim 29, in, The aforementioned system information block 1 is transmitted via the Physical Downlink Shared Channel (PDSCH).

31. The base station (200) according to any one of claims 29 to 30. in, The base station (200) is configured to transmit the partial system information block one using beamforming along multiple beamforming directions.

32. The base station (200) according to any one of claims 29 to 31. in, The base station (200) is configured to transmit the partial system information block and the synchronization signal block multiplexed together.

33. The base station (200) according to any one of claims 1 to 13. in, The trigger signal (310) is the first trigger signal. The base station (200) is configured to transmit the second part (306_2) of the access information (300) which is divided into two sub-parts. The base station (200) is configured to receive and transmit a first sub-part of the second part (306_2) of the access information (300) in response to the first trigger signal. The base station (200) is configured to receive the second sub-part of the second portion (306_2) of the access information (300) in response to a second trigger signal.

34. The base station (200) according to any one of claims 1 to 13. in, The base station (200) is configured to receive a trigger signal (310) via a sidelink relay user equipment.

35. The base station (200) according to any one of claims 1 to 13. in, The base station (200) is configured to transmit the trigger information (308) via a sidelink relay user equipment (UE).

36. The base station (200) according to any one of claims 1 to 13. in, The base station (200) is configured to control the user equipment (2021) of the cell to transmit the trigger information (308) when the base station (200) switches to an energy-saving operation mode.

37. The base station (200) according to any of the preceding claims. in, The base station (200) is configured to transmit early information about cell access prohibition and / or system information block one (SIB-1) availability on demand before transmitting the first part (306_1) of the access information (300) and / or transmitting trigger information.

38. The base station (200) according to any one of claims 1 to 13. in, The base station (200) is configured to transmit the triggering information (308) to the user equipment (UE) via direct signaling.

39. The base station (200) according to claim 38. in, The base station (200) is configured to transmit the trigger information (308) via direct signaling before switching to an energy-saving operation mode.

40. The base station (200) according to any one of the preceding claims. in, The base station (200) is configured to switch to the energy-saving operation mode according to operating conditions.

41. The base station (200) according to claim 40. The operating conditions are at least one of the following: -The load of the base station (200), - The radio resource control status of user equipment connected to the base station (200), - Receiving the control signal that controls the base station (200) to enter the energy-saving operation mode.

42. The base station (200) according to any one of claims 1 to 41. in, The trigger signal (310) is one of the following signals: -Wake-up signal - Cell wake-up signals on the same frequency band / cell - Cell wake-up signal on another frequency band / cell - Cell wake-up signal on LTE cells - Cell wake-up signal relayed via side link - Triggering messages via the core network.

43. The base station (200) according to any one of claims 1 to 42. in, The base station (200) is configured to switch between a normal operating mode and the energy-saving operating mode according to at least one of the following: -Schedule, -Xn signaling, - Operations and Maintenance (O&M) - Core signaling.

44. The base station (200) according to any one of claims 1 to 43. in, The triggering information (308) describes one or more of the following: - Location of the synchronization signal -At least a portion of the uplink configuration, -At least a portion of the random access channel configuration, -At least a portion of the power configuration, - At least a portion of a time-division and / or frequency-division duplex configuration, - At least a portion of the system information configuration.

45. The base station (200) according to any one of claims 1 to 44. in, The base station (200) is configured to receive the trigger signal (310) on the first cell or frequency band. The base station (200) is configured to transmit at least one of the following: - The first part (306_1) of the access information (300). -The triggering information - The second part (306_2) of the access information (300). On a second cell or frequency band that is different from the first frequency band or cell.

46. ​​The base station (200) according to claim 45. in, The base station (200) is configured to serve multiple cells or frequency bands. The base station (200) is configured to transmit the first part (306_1) of the access information (300) and the trigger information (308) on the first cell or frequency band. The base station (200) is configured to receive the trigger signal (310) and, in response to the trigger signal (310), transmit the second part (306_2) of the access information (300) on a second cell or frequency band different from the first cell or frequency band.

47. The base station (200) according to claim 45 or 46. in, The triggering information (308) enables the user equipment (2021) to trigger the transmission of the second part (306_2) of the access information (300) in at least one second cell.

48. The base station (200) according to claim 47. in, The triggering information (308) describes one or more of the following for each of the at least one second cell: -The second cell identifier. -Second cell frequency or channel - Location of the synchronization signal -At least a portion of the uplink configuration, -At least a portion of the random access channel configuration, -At least a portion of the power configuration, - At least a portion of a time-division and / or frequency-division duplex configuration, - At least a portion of the system information configuration.

49. The base station (200) according to claim 48. in, The base station (200) is configured to transmit the trigger information (308) via a container. Alternatively, the base station (200) may be configured to transmit the trigger information (308) together with the system information of the first cell or frequency band.

50. The base station (200) according to any one of claims 1 to 44. in, The base station (200) is configured to receive the trigger signal (310) on the same frequency band or cell as when the first part (306_1) of the access information (300), the trigger information (308) and / or the second part (306_2) of the access information (300) are transmitted.

51. The base station (200) according to any one of claims 1 to 44. in, The base station (200) is configured to transmit a first portion (306_1) of the access information (300) in a first periodicity and to transmit the trigger information (308) in a second periodicity, wherein the period of the first periodicity is different from the period of the second periodicity.

52. The base station (200) according to claim 51. in, The period of the second period is longer than the period of the first period.

53. The base station (200) according to claim 51 or 52. in, The trigger information (308) has a short repetition period within the period of the trigger information (308).

54. The base station (200) according to any one of claims 51 to 53. in, The base station (200) is configured to repeatedly transmit the trigger information (308) according to a first mode. And / or wherein the base station (200) is configured to repeatedly transmit the first access information (300) according to the second mode.

55. The base station (200) according to any one of claims 1 to 54. in, The base station (200) is configured to transmit the trigger information (308) only on frames that include a synchronization block.

56. Base station (200) for wireless communication networks. in, The base station (200) is configured to serve a cell of the wireless communication network. The base station (200) is configured to transmit access information (300) to enable one or more user equipments to initially access the cell. The base station (200) is configured to transmit trigger information (308) in an energy-saving operation mode so that the user equipment (2021) can trigger the transmission of the access information (300) and transmit the access information (300) in response to the receipt of the trigger message.

57. Sidelink relay user equipment for wireless communication networks. in, The sidelink relay user equipment is configured to relay signals between the base station (200) and the remote user equipment in the wireless communication network. The signal includes one or more of the following: - Transmit partial access information (300) from the base station (200) to the remote UE. - Transmit a trigger signal (310) from the remote UE to the base station (200). - Transmit trigger information (308) from the base station (200) to the remote UE.

58. The sidelink relay user equipment according to claim 45, in, The sidelink relay user equipment operates as a relay based on the following: -UE capabilities, -Pre-configured - Configuration message, or - Higher-level configuration.

59. User Equipment (UE) for Wireless Communication Networks (2021) in, The user equipment (2021) is configured to access a cell in energy-saving operation mode, and the cell in energy-saving operation mode only transmits the first part (306_1) of the access information (300) required by the user equipment (2021) to access the cell. The user equipment (2021) is configured to access the cell via at least one of the following methods: - Receive the first part (306_1) of the access information (300). - Receive trigger information (308), enabling the user equipment (2021) to trigger the transmission of the second part (306_2) of the access information (300), and - Transmit a trigger signal (310) based on the trigger information.

60. The user equipment (2021) according to claim 59, in, The user equipment (2021) is configured to access the cell in the following manner: - Receive the second part (306_2) of the access information (300).

61. The user equipment (2021) according to claim 59 or 60, in, The first part (306_1) and the second part (306_2) of the access information (300) are derived from the access information.

62. The user equipment according to any one of claims 59 to 61 (2021). in, The access information (300) includes synchronization signals and / or system information.

63. The user equipment according to claim 62 (2021). in, The first part (306_1) of the access information (300) includes only the first part of the synchronization signal and / or system information. The second part (306_2) of the access information (300) includes at least the second part (306_2) of the synchronization signal and / or system information.

64. The user equipment according to claim 62 or 63 (2021). in, The access information (300) includes at least two of the following: -Main synchronization signal, - First synchronization signal -Master Message Block (MIB) - A System Information Block 1 (SIB-1). - Another system information block.

65. The user equipment according to any one of claims 59 to 64 (2021). in, The first part (306_1) of the access information (300) includes information indicating whether the trigger information (308) has been transmitted.

66. The user equipment according to any one of claims 59 to 65 (2021). in, The user equipment (2021) is configured to receive first signaling information indicating whether and / or when the trigger information (308) and / or the second part (306_2) of the access information (300) are transmitted.

67. The user equipment according to any one of claims 59 to 66 (2021). in, The user equipment (2021) is configured to receive second signaling information indicating whether and / or when the base station (200) will switch between the energy-saving operation mode and the normal operation mode.

68. The user equipment according to any one of claims 59 to 67 (2021). in, The user equipment (2021) is configured to receive the trigger information (308) by receiving one of a plurality of different beams for transmitting the trigger information (308).

69. The user equipment according to any one of claims 59 to 68 (2021). in, The trigger signal (310) is a wake-up signal transmitted on the same cell as the access information (300), wherein the trigger information (308) describes the time and / or frequency resources used to transmit the trigger signal (310). Alternatively, the trigger signal (310) may be a wake-up signal transmitted on a different cell than the access information (300), wherein the trigger information (308) describes how to access other cells to transmit the trigger signal (310). Alternatively, the trigger signal (310) is transmitted on an LTE cell, and the trigger information (308) describes the frequency of the LTE cell used to transmit the trigger signal (310). Alternatively, the trigger signal (310) may be transmitted via a side link, wherein the trigger information (308) describes a side link resource pool for transmitting the trigger signal (310).

70. The user equipment according to any one of claims 59 to 69 (2021). in, The second part (306_2) of the access information (300) includes at least a portion of System Information Block 1 (SIB-1).

71. The user equipment according to claim 70 (2021). in, The triggering information (308) is transmitted through the first downlink control information. The second part (306_2) of the access information (300) includes second downlink control information. The first downlink control information and the second downlink control information are associated with different Radio Network Temporary Identifiers (RNTIs).

72. The user equipment according to claim 70 or 71 (2021). in, The first downlink control information is transmitted on control resource set zero (CORESET#0).

73. The user equipment according to any one of claims 70 to 72 (2021). in, The first part (306_1) of the access information (300) including the system information block one (SIB-1) is periodically transmitted in a first cycle. The user equipment (2021) is configured to receive additional information including the trigger information (308) and information describing the first period of periodic transmission of the access information (300) including the system information block one (SIB-1) for the first periodic transmission. The second part (306_2) of the access information (300) further includes a system information block one (SIB-1), which includes the second part (306_2) of the access information (300) of the system information block one (SIB-1) being periodically transmitted in response to the trigger signal (310) at a second period less than the first period.

74. The user equipment according to any one of claims 70 to 73 (2021). in, The user equipment (2021) is configured to receive additional information including the trigger information (308) and a portion of the system information block one (SIB-1).

75. The user equipment according to claim 74 (2021). in, The portion of System Information Block 1 (SIB-1) comprises at least one of the following: - The first instruction indicates whether the community is off-limits. - The second instruction indicates whether a specific group of user equipment should treat the cell as blocked. - The third instruction indicates whether IMS emergency calls are supported. - Hash version of the Public Land Mobile Network (PLMN) - Describe information that includes at least one of the following: SSB location, SSB period, TDD mode, time alignment, and offset.

76. The user equipment according to any one of claims 70 to 75 (2021). in, The first downlink control information is multiplexed with the synchronization signal block.

77. The user equipment according to claim 76 (2021). in, The first downlink control information and the synchronization signal block are transmitted in the same time slot.

78. The user equipment according to claim 77 (2021). in, The first downlink control information and the synchronization signal block are transmitted on different symbols of the same time slot.

79. The user equipment according to any one of claims 59 to 69 (2021). in, The first part (306_1) of the access information (300) includes a primary synchronization signal block and a secondary synchronization signal block. The second part (306_2) of the access information (300) includes the main information block (MIB) and the system information block one (SIB-1). The trigger information (308) is a three-level synchronization signal, indicating that the second part (306_2) of the access information (300) is transmitted in response to the trigger signal (310).

80. The user equipment according to any one of claims 59 to 69 (2021). in, The first part (306_1) of the access information (300) includes a master information block (MIB). The second part (306_2) of the access information (300) includes system information block one (SIB-1). The triggering information (308) is included in the main information block (MIB).

81. The user equipment (2021) according to claim 80, in, The triggering information (308) is included in the main information block (MIB) via the K-ssb value. Alternatively, the trigger information (308) may be included as a separate identifier in the main information block (MIB).

82. The user equipment according to claim 80 (2021). in, The main information block (MIB) is an extended main information block, including at least one bit indicating that an extended portion of the main information block is transmitted.

83. The user equipment according to claim 80 (2021). in, The trigger information (308) is included in the main information block (MIB) by directly instructing the second part (306_2) of the access information (300) to be triggered by the trigger signal (310).

84. The user equipment according to claim 83 (2021). in, The trigger signal (310) is a wake-up signal.

85. The user equipment according to any one of claims 59 to 69 (2021). in, The first part (306_1) of the access information (300) includes a master information block (MIB). The second part (306_2) of the access information (300) includes system information block one (SIB-1). The user equipment (2021) is configured to receive additional information including a partial system information block one, wherein the partial system information block one includes only a portion of the system information block one. The first part of the system information block includes the triggering information.

86. The user equipment (2021) according to claim 85, in, The aforementioned system information block 1 is transmitted via the Physical Downlink Shared Channel (PDSCH).

87. The user equipment according to any one of claims 85 to 86 (2021). in, The user equipment is configured to receive the partial system information block one by receiving one of a plurality of different beams used to transmit the partial system information block one.

88. The user equipment according to any one of claims 85 to 87 (2021). in, The aforementioned system information block one is multiplexed with the synchronization signal block.

89. The user equipment according to any one of claims 59 to 69 (2021). in, The trigger signal (310) is the first trigger signal. The second part (306_2) of the access information (300) is divided into two sub-parts for transmission. The user equipment (2021) is configured to transmit the first trigger signal to trigger the transmission of the first sub-part of the second part (306_2) of the access information (300). The user equipment (2021) is configured to transmit the second trigger signal in response to the receipt of the second trigger signal to trigger the transmission of the second sub-part of the second part (306_2) of the access information (300).

90. The user equipment according to any one of claims 59 to 69 (2021). in, The user equipment (2021) is configured to transmit the trigger signal (310) via a sidelink relay UE.

91. The user equipment according to any one of claims 59 to 69 (2021). in, The user equipment (2021) is configured to receive the trigger information (308) via a sidelink relay user equipment.

92. The user equipment according to any one of claims 59 to 69 (2021). in, The user equipment (2021) is configured to receive early information on demand regarding cell access prohibition and / or the availability of System Information Block 1 (SIB-1) before receiving the first portion (306_1) of the access information (300) and / or the trigger information.

93. The user equipment according to any one of claims 59 to 69 (2021). in, The user equipment (2021) is configured to receive the trigger information (308) via direct signaling.

94. The user equipment according to any one of claims 59 to 69 (2021). in, The trigger signal (310) is one of the following signals: -Wake-up signal - Cell wake-up signals on the same frequency band / cell - Cell wake-up signal on another frequency band / cell - Cell wake-up signal on LTE cells - Cell wake-up signal relayed via side link - Triggering messages via the core network.

95. The user equipment according to any one of claims 59 to 94 (2021). in, The triggering information (308) describes one or more of the following: - Location of the synchronization signal -At least a portion of the uplink configuration, -At least a portion of the random access channel configuration, -At least a portion of the power configuration, - At least a portion of a time-division and / or frequency-division duplex configuration, - At least a portion of the system information configuration.

96. The user equipment according to any one of claims 59 to 95 (2021). in, The user equipment (2021) is configured to transmit the trigger signal (310) on the first cell or frequency band. The user equipment (2021) is configured to receive at least one of the following: - The first part (306_1) of the access information (300). -The triggering information - The second part (306_2) of the access information (300). On a second cell or frequency band that is different from the first frequency band or cell.

97. The user equipment according to claim 96 (2021). in, The user equipment (2021) is configured to receive the first part (306_1) of the access information (300) and the trigger information (308) on the first cell or frequency band. The user equipment (2021) is configured to transmit the trigger signal (310) and receive the second part (306_2) of the access information (300) on a second cell or frequency band different from the first cell or frequency band.

98. The user equipment according to claim 96 or 97 (2021). in, The triggering information (308) enables the user equipment to trigger the transmission of the second part (306_2) of the access information (300) in at least one second cell.

99. The user equipment according to claim 98 (2021). in, The triggering information (308) describes one or more of the following for each of the at least one second cell: -The identifier of the second community, -The frequency or channel of the second cell - Location of the synchronization signal -At least a portion of the uplink configuration, -At least a portion of the random access channel configuration, -At least a portion of the power configuration, - At least a portion of a time-division and / or frequency-division duplex configuration, - At least a portion of the system information configuration.

100. The user equipment according to claim 100 (2021). in, The user equipment (2021) is configured to receive trigger information (308) via a container. Alternatively, the user equipment (2021) may be configured to receive the trigger information (308) together with the system information of the first cell or frequency band.

101. The user equipment according to any one of claims 59 to 95 (2021). in, The user equipment (2021) is configured to transmit the trigger signal (310) on the same frequency band or cell as when the first part (306_1) of the access information (300), the trigger information (308) and / or the second part (306_2) of the access information (300) is received.

102. The user equipment according to any one of claims 59 to 95 (2021). in, The user equipment (2021) is configured to receive the first portion (306_1) of the access information (300) based on a first periodicity and to receive the trigger information (308) based on a second periodicity, wherein the period of the first periodicity is different from the period of the second periodicity.

103. The user equipment (2021) according to claim 102, in, The period of the second period is longer than the period of the first period.

104. The user equipment according to claim 102 or 103 (2021). in, The trigger information (308) has a short repetition period within the period of the trigger information (308).

105. The user equipment according to any one of claims 102 to 104 (2021). in, The triggering information (308) is repeatedly transmitted according to the first mode. And / or the first access information (300) therein is repeatedly transmitted according to the second mode.

106. The user equipment according to any one of claims 59 to 105 (2021). in, The user equipment (2021) is configured to receive the trigger information (308) only on frames that include a synchronization block.

107. User equipment for use in wireless communication networks (2021). in, The user equipment (2021) is configured to access a cell, the cell is in an energy-saving operation mode, and the cell in the energy-saving operation mode only transmits the access information (300) required for the user equipment (2021) to access the cell in response to the receipt of a trigger signal (310). The user equipment (2021) is configured to access the cell in the following ways: - Receive trigger information (308), enabling the user equipment (2021) to trigger the transmission of the second part (306_2) of the access information (300), and - Transmit a trigger message based on the trigger information.

108. A method of operating a base station (200) for a wireless communication network, the method comprising: To provide service to one cell of the wireless communication network. Transmit access information (300) to enable one or more user equipments to access the cell. In the energy-saving operation mode, the access information (300) is transmitted by transmitting the following information: -The first part (306_1) of the access information (300), and - Triggering information (308) enables a user equipment (2021) to trigger the transmission of the second part (306_2) of the access information.

109. A method of operating a base station (200) for a wireless communication network, the method comprising: To provide service to one cell of the wireless communication network. Transmit access information (300) to enable one or more user equipments to access the cell. In the energy-saving operation mode, the access information (300) is transmitted only in response to receiving a trigger signal (310) that triggers the transmission of the access information.

110. A method for operating a sidelink relay user equipment (UE) for a wireless communication network, the method comprising: Relaying signals between the base station (200) and the remote user equipment (UE) in the wireless communication network. The signal includes one or more of the following: - The portion of the data transmitted from the base station (200) to the remote UE for access information (300). - Transmission trigger signal (310) from the remote UE to the base station (200), - Transmit trigger information (308) from the base station (200) to the remote UE.

111. A method of operating a user equipment (2021) for a wireless communication network, the method comprising: Accessing a cell, the cell is in an energy-saving operation mode, and the cell only transmits the first part (306_1) of the access information (300) required for the user equipment (2021) to access the cell in the energy-saving operation mode. The cell access includes: - Receive the first part (306_1) of the access information (300). - Receive trigger information (308), enabling the user equipment (2021) to trigger the transmission of the second part (306_2) of the access information (300), and - Transmit a trigger message based on the trigger information.

112. A method for operating a user equipment (2021) UE for a wireless communication network, the method comprising: Access to a cell, wherein the cell is in an energy-saving operation mode, and the cell in the energy-saving operation mode only transmits the access information (300) required by the user equipment (2021) for accessing the cell in response to the receipt of a trigger signal (310). The cell access includes - Receive trigger information (308), enabling the user equipment (2021) to trigger the transmission of the second part (306_2) of the access information (300), and - Transmit a trigger message based on the trigger information.

113. A computer program for performing the method according to any one of claims 108 to 112, when the computer program is run on a computer, a microprocessor, or a software-defined radio.

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