Synchronization and RS design for LP-WUR UE

Abstract

Aspects of a user equipment (UE) are described that includes a low power wakeup radio (LP-WUR) and a primary radio configured to enable wireless communication with a base station, and a processor communicatively coupled to the LP-WUR and the primary radio. The processor is configured to receive a first low power wake-up signal (LP-WUS) from the base station; determining that the first LP-WUS corresponds to a cell of the UE; and determining that the first LP-WUS indicates to turn on the primary radio. The processor is further configured to turn on the primary radio and receive a paging message from the base station.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to U.S. non-provisional application No. 18 / 352,714, filed on July 14, 2023, entitled “SYNCHRONIZATION AND RS DESIGN FOR LP-WUR UE,” which claims the benefit of U.S. provisional application No. 63 / 370,167, filed on August 2, 2022, entitled “SYNCHRONIZATION AND RS DESIGN FOR LP-WUR UE,” and the contents of these two applications are incorporated herein by reference in their entirety. Background Art Technical Field

[0003] The described aspects generally relate to low power wake-up radio (LP-WUR) designs. Summary of the invention

[0004] Some aspects of the present disclosure relate to systems, apparatuses, and methods for implementing LP-WUR in a user equipment (UE). For example, systems, apparatuses, and methods for implementing LP-WUR to wake up or disconnect a primary radio of a UE are provided.

[0005] Some aspects of the present disclosure relate to a UE, the UE including an LP-WUR and a primary radio configured to enable wireless communication with a base station, and a processor communicatively coupled to the LP-WUR and the primary radio. The processor is configured to receive a first low power wake-up signal (LP-WUS) from the base station; determine that the first LP-WUS corresponds to a cell of the UE; and determine that the first LP-WUS indicates turning on the primary radio. The processor is further configured to turn on the primary radio and receive a paging message from the base station.

[0006] Some aspects of the present disclosure relate to a method of operating a UE. The method includes receiving a first LP-WUS from a base station; determining that the first LP-WUS corresponds to a cell of the UE; and determining that the first LP-WUS indicates turning on a primary radio of the UE; the method also includes turning on the primary radio and receiving a paging message from the base station.

[0007] Some aspects of the present disclosure relate to a non-transitory computer readable medium (CRM) including instructions for causing the UE to perform operations when the instructions are executed by one or more processors of the UE. The operations include receiving a first LP-WUS from a base station; determining that the first LP-WUS corresponds to a cell of the UE; and determining that the first LP-WUS indicates turning on a primary radio of the UE; the operations also include turning on the primary radio and receiving a paging message from the base station.

[0008] The present invention is provided for the purpose of illustrating some aspects only, so as to provide an understanding of the subject matter described herein. Therefore, the above-mentioned features are only examples and should not be understood as narrowing the scope or essence of the subject matter in the present disclosure. Other features, aspects and advantages of the present disclosure will become apparent from the following detailed description, drawings and claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The accompanying drawings, which are incorporated herein and form a part of the specification, illustrate the present disclosure and, together with the description, further serve to explain the principles of the present disclosure and enable those skilled in the relevant art to make and use the present disclosure.

[0010] Figure 1 An example system that implements LP-WUR in a UE according to some aspects of the present disclosure is illustrated.

[0011] Figure 2 A block diagram illustrating an example system of electronic devices for LP-WUR implementations according to some aspects of the present disclosure is shown.

[0012] Figure 3 An example method of controlling a primary radio of a UE using LP-WUR according to aspects of the present disclosure is illustrated.

[0013] Figure 4 Example methods of detecting a low power wake-up signal (LP-WUS) according to aspects of the present disclosure are illustrated.

[0014] Figure 5 Example methods of generating and sending LP-WUS according to aspects of the present disclosure are illustrated.

[0015] Figure 6 is an example computer system for implementing some aspects or portions of the present disclosure.

[0016] The present disclosure is described with reference to the accompanying drawings. In the drawings, generally, like reference numerals indicate identical or functionally similar elements. Additionally, generally, the leftmost digit of a reference numeral identifies the drawing in which the reference numeral first appears. DETAILED DESCRIPTION

[0017] Some aspects of the present disclosure include apparatus and methods for implementing LP-WUR in a UE. For example, systems, apparatus, and methods for implementing LP-WUR to wake up or disconnect a primary radio of a UE are provided.

[0018] In some aspects, the UE may enter one or more low power modes (also referred to as sleep modes) to reduce power consumption. For example, the UE may enter a radio resource control (RRC) idle mode and suppress sending and receiving signals. The UE may also enter an RRC inactive mode and reduce communications to and from a base station. In both cases, the UE may disconnect or turn down the UE's main radio to reduce power consumption. In some aspects, the UE periodically wakes up in a low power mode to receive and / or send signals. For example, in an RRC idle mode, the UE may periodically wake up to detect a paging signal from a base station. In an RRC inactive mode, the UE may wake up to perform small data transmissions and / or early measurements of neighboring cells. In some aspects, the power consumption of the UE when waking up is much greater than the power consumption of the UE when sleeping. In addition, some wake-up cycles may be unnecessary. For example, the UE may wake up in an RRC idle mode, but the base station does not send a paging signal. As another example, the UE may wake up in an RRC inactive mode, but there is no data to be sent or received using a small data transmission. Therefore, it is beneficial to avoid waking up the UE if it is not necessary.

[0019] In some aspects, in addition to the main radio, the UE also includes an LP-WUR. The LP-WUR may have limited capabilities and therefore consume much less power than the main radio. For example, the LP-WUR may operate on a simple modulation scheme, such as on-off keying (OOK) modulation or low-level amplitude shift keying (ASK) modulation. The LP-WUR may include a receiver, but no transmitter, and therefore cannot transmit. The LP-WUR may also have a low data rate. Therefore, when the main radio is disconnected but the LP-WUR is turned on, the UE may be considered to be sleeping in a low power mode or sleep mode. In some aspects, the LP-WUR may control the main radio by turning the main radio on or off. For example, the LP-WUR may receive a wake-up signal from the base station and wake up the main radio. The main radio may receive a paging signal or perform a small data transfer when waking up. In some aspects, the base station sends a wake-up signal when a subsequent action is expected. For example, the base station may send a wake-up signal shortly before sending a paging signal to the UE. Otherwise, if there is no paging signal to be sent to the UE, the base station does not send a wake-up signal. In this case, the UE avoids waking up when there is no paging signal to be received.

[0020] In some aspects, the LP-WUR of the UE is configured to detect a wake-up signal from a base station. For example, the UE needs to know the time location and the frequency band / frequency point to receive the wake-up signal. In addition, the base station may send a signal to disconnect the UE's primary radio instead of waking up the primary radio. The LP-WUR is configured to distinguish between a wake-up signal and a disconnection signal received from the base station.

[0021] Figure 1 An example system 100 for implementing LP-WUR in a UE according to some aspects of the present disclosure is illustrated. The example system 100 is provided for illustrative purposes only and is not intended to limit the disclosed aspects. The example system 100 may include, but is not limited to, a UE 102 and a base station 104. The UE 102 may be implemented as an electronic device configured to operate based on a variety of wireless communication technologies. These technologies may include, but are not limited to, technologies based on the third generation partnership project (3GPP) standard. For example, the UE 102 may be configured to operate using one or more 3GPP versions, such as Release 15 (Rel-15), Release 16 (Rel-16), Release 17 (Rel-17), or other 3GPP versions. The UE 102 may include, but is not limited to, a wireless communication device, a smart phone, a laptop, a desktop computer, a tablet computer, a personal assistant, a monitor, a television, a wearable device, an Internet of Things (IoT) device, a vehicle communication device, and the like. The base station 104 may include one or more nodes configured to operate based on a variety of wireless communication technologies, such as, but not limited to, technologies based on the 3GPP standard. For example, the base station 104 may include a node configured to operate using Rel-15, Rel-16, Rel-17 or other 3GPP versions. The base station 104 may include, but is not limited to, a NodeB, an eNodeB, a gNB, a new radio base station (NR BS), an access point (AP), a remote radio head, a relay station, etc.

[0022] In some aspects, the UE 102 is connected to the base station 104 via a communication link 106. The communication link 106 may include an uplink (UL) connection and a downlink (DL) connection. As described above, the UE 102 may include a primary radio and an LP-WUR. The UE 102 may receive a traditional reference signal (RS) from the base station 104 via the communication link 106 via the primary radio. The traditional RS may include a synchronization signal block (SSB) signal, a primary synchronization signal (PSS), a secondary synchronization signal (SSS), a physical broadcast channel (PBCH) signal, a demodulation reference signal (DMRS), a system information (SI) signal, and / or other reference signals. The UE may also use the primary radio and perform data transmission to the base station 104 via the communication link 106. The UE 102 may also receive a low power wake-up signal (LP-WUS) from the base station 104 using the LP-WUR. The UE 102 may receive the LP-WUS via the communication link 106 or a second communication link different from the communication link 106. For example, the communication link 106 and the second communication link may have different frequency bands, modulation schemes, time locations, or other configurations.

[0023] In some aspects, UE 102 may be connected to base station 104 via cell 110. For example, cell 110 may be the primary cell of UE 102 supported by base station 104. In some aspects, UE 102 may enter RRC idle mode. In this case, the UE remains on cell 110, but enters sleep mode and wakes up periodically. In sleep mode, the UE suppresses transmission to or reception from the base station. In other aspects, in RRC idle mode, UE 102 remains in sleep mode until LP-WUS wakes up the UE. For example, the LP-WUS of the UE monitors the communication link 106 and detects the LP-WUS sent by base station 104. The UE then determines that the LP-WUS indicates that the primary radio of the UE is turned on. The LP-WUS then turns on the primary radio. In some aspects, base station 104 may send a paging signal to UE 102 after sending the LP-WUS. In this case, when no paging signal is to be received, the UE avoids turning on the primary radio and thus reduces power consumption. In some aspects, the LP-WUS may be a power control reference signal that may indicate turning on or off / turning down the primary radio of the UE.

[0024] In some aspects, UE 102 may enter RRC inactive mode. In RRC inactive mode, UE may perform early measurements on cell 110 and other secondary cells. When UE enters RRC connected mode later, the results of early measurements may be used to reconfigure the connection to cell 110 and other secondary cells. In some aspects, UE 102 repeatedly or continuously performs early measurements. However, the results of early measurements may expire over time. For example, the channel conditions of cell 110 and / or other secondary cells may have changed. For another example, UE 102 may have moved to different locations and may need to perform cell reselection and / or reconfiguration on the secondary cell. Therefore, continuous execution of early measurements may consume unnecessary energy. In some aspects, UE 102 may be configured to perform early measurements shortly before entering RRC connected mode. For example, UE 102 may turn on the main radio and perform early measurements after receiving LP-WUS.

[0025] Figure 2 A block diagram of an electronic device 200 implementing cell measurement and reporting according to some aspects of the present disclosure is illustrated. The electronic device 200 can be any electronic device (e.g., UE 102) in the electronic devices of the system 100. The electronic device 200 includes a processor 210, a main radio 220, a LP-WUR 230, a communication infrastructure 240, a memory 250, an operating system 252, an application 254, a device capability 256, and an antenna 260. The illustrated system is provided as an exemplary portion of the electronic device 200, and the electronic device 200 may include other circuits and subsystems. In addition, although the system of the electronic device 200 is shown as separate components, aspects of the present disclosure may include any combination of these components, for example, fewer components or more components.

[0026] Memory 250 may include random access memory (RAM) and / or cache, and may include control logic components (e.g., computer software) and / or data. Memory 250 may include other storage devices or memories. According to some examples, an operating system 252 may be stored in memory 250. Operating system 252 may manage data transmission from memory 250 and / or one or more applications 254 to processor 210 and / or main radio 220. In some examples, operating system 252 maintains one or more network protocol stacks (e.g., Internet protocol stack, cellular protocol stack, etc.) that may include multiple logical layers. At the corresponding layer of the protocol stack, operating system 252 includes control mechanisms and data structures to perform functions associated with that layer.

[0027] According to some examples, applications 254 may be stored in memory 250. Applications 254 may include applications (e.g., user applications) used by electronic device 200 and / or a user of electronic device 200. Applications in applications 254 may include applications such as, but not limited to, radio streaming, video streaming, remote control, and / or other user applications. In some aspects, device capabilities 256 may be stored in memory 250.

[0028] The electronic device 200 may also include a communication infrastructure 240. The communication infrastructure 240 provides, for example, communication between the processor 210, the main radio 220, the LP-WUR 230, and the memory 250. In some implementations, the communication infrastructure 240 may be a bus.

[0029] Processor 210, alone or in conjunction with instructions stored in memory 250, executes to enable electronic device 200 of system 100 to implement operations of LP-WUR 230, as described herein. Alternatively or additionally, processor 210 may be "hard coded" to implement LP-WUR 230, as described herein.

[0030] The main radio 220 sends and receives communication signals including traditional RS and other data communication signals. Additionally, the main radio 220 sends and receives communication signals that support mechanisms for measuring communication links, generating and sending system information, and receiving system information. According to some aspects, the main radio 220 may be coupled to an antenna 260 to wirelessly send and receive these communication signals. Antenna 260 may include one or more antennas, which may be of the same or different types and may form one or more antenna ports. The main radio 220 allows the electronic device 200 to communicate with other devices that may be wired and / or wireless. In some examples, the main radio 220 may include a processor, a controller, a radio component, a socket, a plug, a buffer, and similar circuits / devices for connecting to a network and communicating on the network. According to some examples, the main radio 220 includes one or more circuits for connecting to a wired network and / or a wireless network and communicating on a wired network and / or a wireless network.

[0031] Additionally, the primary radio 220 may include one or more circuits (including a cellular transceiver) for connecting to and communicating on a cellular network. The cellular network may include, but is not limited to, 3G / 4G / 5G networks such as Universal Mobile Telecommunications System (UMTS), Long Term Evolution (LTE), etc. For example, the primary radio 220 may be configured to operate in accordance with one or more of Rel-15, Rel-16, Rel-17, or other versions of the 3GPP standard.

[0032] Similarly, the LP-WUR 230 may include one or more circuits (including a cellular receiver) for connecting to and communicating on a cellular network. The cellular network may include, but is not limited to, 3G / 4G / 5G networks such as Universal Mobile Telecommunications System (UMTS), Long Term Evolution (LTE), etc. For example, the LP-WUR 230 may be configured to operate in accordance with one or more of Rel-15, Rel-16, Rel-17, or other versions of the 3GPP standard.

[0033] In some aspects, the electronic device 200 can enter a power saving mode or sleep mode by disconnecting the main radio 220. For example, the electronic device 200 can refrain from using the main radio 220 to transmit or receive. In some aspects, the electronic device 200 can power down the main radio 220. For example, the main radio 220 can be powered down to consume a small portion of the power, such as 1% of the power consumption before powering down. In this case, the main radio 220 can be considered to be powered off. The main radio 220 can also be turned on or turned on to receive signals from a base station. In addition, in the power saving mode, the main radio 220 can be turned on to receive a paging signal from a base station.

[0034] In some aspects, the main radio 220 is turned on and off based on the LP-WUR 230. For example, the LP-WUR 230 may be coupled to the antenna 260 and receive a disconnect signal from the base station. The LP-WUR 230 may pass a disconnect configuration message or command to the processor 210 via the communication infrastructure 240. The processor 210 then powers off or powers down the main radio 220. The LP-WUR 230 may also pass a disconnect configuration message or command to the main radio 220 to power off or powers down the main radio 220. Alternatively, the LP-WUR 230 may receive a wake-up signal, such as an LP-WUS, to turn on the main radio 220. The LP-WUR may pass a wake-up signal to the processor 210 and / or the main radio 220 to turn on the main radio 220.

[0035] In some aspects, the master radio 220 may receive a paging signal from a base station to enter RRC connected mode. The master radio 220 may also perform small data transmissions and / or early measurements with a base station to monitor channel quality of neighboring cells. The LP-WUR 230 may be a receiver that receives signals from a base station, such as a wake-up signal and a disconnect signal. In some aspects, the LP-WUR 230 may not be able to send signals.

[0036] As follows about Figures 3 to 6 As discussed in more detail, processor 210 may implement various mechanisms for cell measurement and reporting, such as Figure 1 The system 100 discussed above.

[0037] Figure 3An example method 300 of controlling the primary radio of a UE using LP-WUR is illustrated. The example method 300 is provided for illustration purposes only and is not intended to limit the disclosed aspects. For convenience and not limitation, reference may be made to Figure 1 , Figure 2 and Figure 6 Description of the elements Figure 3 The example method 300 may represent an electronic device (eg, Figure 1 The example method 300 may also be performed by (controlled or implemented by) the UE 102 and the base station 104. Figure 2 The electronic device 200 and / or Figure 6 The example method 300 is not limited to the specific aspects depicted in these figures, and other systems may be used to perform the method, as will be understood by those skilled in the art. It should be understood that not all operations may be required, and these operations may not be performed in order. Figure 3 The same order as shown is followed.

[0038] At 302, a UE (such as UE 102) receives a primary radio control signal (such as a LP-WUS) from a base station (such as base station 104). In some aspects, the UE receives the LP-WUS using the LP-WUR of the UE. The UE also determines a time location and a frequency band / frequency point at which the LP-WUS is received. In other words, the UE may determine one or more resource elements (REs) to be used by the LP-WUS. The frequency band / frequency point of the LP-WUS may be the same or a different frequency band / frequency point of a conventional RS received via a primary radio of the UE. As described above, the LP-WUS may be a wake-up signal or a disconnection signal.

[0039] At 304, the UE determines whether the LP-WUS is directed to the UE. The UE may determine a cell ID and determine whether the cell ID corresponds to a cell to which the UE is connected or camped. In some aspects, the UE may determine the cell ID in three ways. First, the LP-WUS may be generated by scrambling the cell ID with a scrambling sequence on the base station side. In other words, the base station indicates the cell to which the LP-WUS is directed by scrambling the cell ID of the cell into the LP-WUS using the scrambling sequence. The scrambling sequence is known to both the base station and the UE. For example, the scrambling sequence may be sent in advance from the base station to the UE. The base station may send the scrambling sequence to the UE via higher layer signaling (such as an RRC message). Therefore, on the UE side, the UE may generate a local sequence using the scrambling sequence received from the base station and the cell ID of the UE's cell, for which the UE also has predetermined knowledge. In this case, the UE may determine whether the local sequence matches the LP-WUS. The UE may calculate a correlation value between the LP-WUS and the local sequence. If the correlation value is higher than the threshold, the UE determines that the cell ID of the LP-WUS matches the cell ID of the cell where the UE resides, and the LP-WUS points to the cell of the UE. Second, the frequency band or frequency point of the LP-WUS may be cell-specific. For example, the base station may allocate frequency bands / frequency points to different cells. If the UE receives the LP-WUS in the frequency band / frequency point corresponding to the cell where the UE resides, the LP-WUS inherently corresponds to the cell ID of the cell. Third, the LP-WUS may include a payload including a cell ID. The LP-WUS may decode the LP-WUS and extract the payload to identify the cell ID. In some aspects, the cell ID of the UE may also include the physical cell ID (PCI) of the UE.

[0040] In some aspects, the UE may also determine the UE ID of the LP-WUS and determine whether it matches the UE ID of the UE. Similar to the cell ID, the UE may determine the UE ID in three ways. First, the LP-WUS may be generated by scrambling the UE ID with a scrambling sequence on the base station side. On the UE side, the UE may generate a local sequence using the scrambling sequence and the UE ID of the UE. The UE then calculates a correlation value between the LP-WUS and the local sequence to determine whether the UE ID of the LP-WUS matches the UE ID of the UE. In some aspects, the LP-WUS may be generated by scrambling the UE ID and the cell ID with a scrambling sequence. In this case, the UE generates a local sequence using both the UE ID of the UE and the cell ID of the cell of the UE. If the correlation value between the LP-WUS and the local sequence is higher than a threshold, the UE determines that both the cell ID and the UE ID of the LP-WUS match the cell ID and the UE ID of the UE, respectively. Second, the frequency band / frequency point of the LP-WUS may be UE-specific. For example, a frequency band / frequency point may be assigned to each UE. Therefore, if the UE receives the LP-WUS in the allocated frequency band / frequency point, the LP-WUS corresponds to the UE ID of the UE. Third, the LP-WUS may include a payload including the UE ID.

[0041] In some aspects, the base station configures the UE to use which method for determining the cell ID and / or UE ID. For example, an RRC message received by the UE may indicate the method used to determine the cell ID and / or UE ID. Using any of the three methods, if the UE determines that the cell ID and / or UE ID of the LP-WUS corresponds to the cell ID and UE ID of the UE, control moves to 306. Otherwise, the UE discards the LP-WUS.

[0042] At 306, the UE determines whether the LP-WUS indicates turning on or powering off / down the primary radio. As described above, the LP-WUS may indicate: (1) turning off or turning down the power of the primary radio; and (2) turning on the primary radio. The UE may make such a determination via at least four methods.

[0043] First, the LP-WUS can be generated using one of two scrambling sequences: an "on" sequence and an "off" sequence. If the base station wants to turn on the primary radio of the UE, the base station may use the "on" sequence to generate the LP-WUS. Otherwise, the base station may use the "off" sequence to generate the LP-WUS. On the UE side, similar to as described above, the UE is configured with two scrambling sequences via higher layer signaling. Therefore, the UE may generate two local sequences using the "on" and "off" sequences, respectively. The UE may then calculate the correlation value between the two local sequences and the LP-WUS receiver. If the correlation value between the "on" local sequence and the LP-WUS is higher than a threshold, the UE determines that the LP-WUS indicates turning on the primary radio. Otherwise, the UE determines that the LP-WUS indicates disconnecting the primary radio.

[0044] Referring back to 304, if two scrambling sequences (such as an "on" scrambling sequence and an "off" scrambling sequence) are used to generate the LP-WUS, then at 304, the UE determines the cell ID and / or UE ID based on the two local sequences. For example, the UE may generate a first local sequence using the UE ID of the UE and the "on" scrambling sequence, and generate a second local sequence using the UE ID of the UE and the "off" scrambling sequence. When determining the UE ID of the LP-WUS, the UE calculates correlation values ​​using both the first local sequence and the second local sequence, respectively. If one of the two local sequences produces a correlation value above a threshold, the UE determines that the UE ID of the LP-WUS matches the UE ID of the UE.

[0045] Second, the UE may determine to power off or power on the primary radio based on the power level of the LP-WUS. In some aspects, if the power level of the LP-WUS is above a power threshold, the UE determines that the LP-WUS indicates to power off or power off the primary radio of the UE. Otherwise, the UE determines that the LP-WUS indicates to power on the primary radio of the UE. In other aspects, if the power level of the LP-WUS is below a power threshold, the UE determines that the LP-WUS indicates to power off or power off the primary radio of the UE. Otherwise, the UE determines that the LP-WUS indicates to power on the primary radio of the UE.

[0046] In both cases, the UE needs to determine the power threshold. In some aspects, the UE determines the power threshold based on the initial power threshold sent by the base station. For example, if the base station is configured to disconnect or turn down the main radio of the UE, the base station sends the LP-WUS at a power level higher than the initial power threshold X. Otherwise, the base station sends the LP-WUS at a power level lower than the initial power threshold X. However, the LP-WUS may experience path loss effects and / or other signal degradation effects when it is sent from the base station to the UE. Therefore, when received by the UE, the LP-WUS sent at a power level higher than the threshold X may have a power level lower than the threshold X. When determining the power threshold, the UE needs to take this into account. For example, the UE may be located at the edge of the cell. The UE may determine the power level difference between the power level of the received LP-WUS at the UE and the power level of the sent LP-WUS at the base station as Y, where Y is a positive value. In this case, the UE adjusts the initial power threshold X by Y and determines the power threshold to be XY. For another example, if the UE is located at the center of the cell, the power level of the transmitted LP-WUS at the base station is similar to the power level of the received LP-WUS at the UE because the UE is located near the base station and the path loss effect and other signal degradation effects are small. Therefore, Y is close to zero, and the UE determines the power threshold to be X. In this way, the UE can determine Y based on the location of the UE in the cell, and then determine the corresponding power threshold XY

[0047] In some aspects, the initial threshold value X may be based on the power level of the received LP-WUS in a location other than the cell center. For example, the UE may be located in the midpoint of the cell, that is, the midpoint between the cell center and the cell edge. In some aspects, the cell midpoint may be any point between the cell center and the cell edge. When sending the LP-WUS, the base station may take into account the path loss effect and other signal degradation effects between the base station and the UE. For example, if the base station is configured to disconnect or turn down the main radio of the UE, the base station sends an LP-WUS with a power level so that the UE receives an LP-WUS with a power level higher than X. Therefore, if the received LP-WUS has a power level higher than X, the UE located in the midpoint of the cell determines to disconnect the main radio. If the received LP-WUS has a power level lower than X, the UE located in the midpoint of the cell determines to turn on the main radio. Therefore, the threshold power of the UE located in the midpoint of the cell is the initial threshold value X. In some aspects, the UE may move to a different location in the cell, and / or the second UE may be located in a different location from the midpoint of the cell. For a UE or a second UE that is not located in the midpoint of the cell, the UE or the second UE may determine the threshold power based on the initial threshold value X. For example, if the UE moves to a new location that is closer to the base station, the power level of the received LP-WUS becomes stronger because less path loss effects and signal degradation effects are expected. In this case, the UE may increase the threshold to X+Y1. For example, Y1 may correspond to the power level difference between the signal received at the midpoint of the cell and the signal received at the new location after the UE moves closer to the base station. However, if the UE moves farther away from the base station, the UE may lower the threshold to X-Y2. This is because the received signal at the UE is expected to be weaker, and Y2 may correspond to the power level difference between the signal received at the midpoint of the cell and the signal received at the new location after the UE moves farther away from the base station.

[0048] Third, the UE may determine whether to turn on or off the primary radio by decoding the LP-WUS. In some aspects, the LP-WUS may include a payload that may be decoded by the UE. As described above, the payload may include the cell ID and / or UE ID of the UE. The payload may also include an indication to power off or turn on the primary radio. In some aspects, the payload may also include an indication to turn on or off the LP-WUS.

[0049] Fourth, as further described below, the LP-WUS may indicate turning on the primary radio, and the UE disconnects the primary radio after the timer expires. In this case, the LP-WUS does not indicate disconnecting or turning down the primary radio.

[0050] In some aspects, the base station configures the UE to use which method for determining whether to disconnect or turn on the primary radio. For example, an RRC message received by the UE may indicate the selected method. Using any of the first three methods, if the UE determines to disconnect or turn down the primary radio, control moves to 308.

[0051] At 308, the UE disconnects or turns down the primary radio to reduce power consumption. For example, the UE refrains from transmitting to or receiving from the base station. If the UE is already in power saving mode and the primary radio is disconnected or turned down before step 308, the UE is in power saving mode.

[0052] Referring back to 306 , if the UE determines to turn on the primary radio, control moves to 310 .

[0053] At 310, the UE turns on the primary radio. If the primary radio was already turned on before step 310, the UE keeps the primary radio turned on. When the primary radio is turned on, the UE can receive paging signals from the base station. When the primary radio is turned on, the UE can also perform data transmissions to and from the base station. In some aspects, at 306, the UE turns on the primary radio based on the LP-WUS described in the fourth method, and the UE starts a timer after receiving the LP-WUS. The primary radio remains on until the timer expires. If the timer is already running when the UE receives the LP-WUS, the UE resets the timer.

[0054] In some aspects, if the UE has not received any LP-WUS within a maximum time period, the UE may turn on the primary radio. For example, the UE may have moved out of the range of the cell where the UE resides or is connected. In this case, the UE may turn on the primary radio to connect the UE to the new cell. The maximum time period prevents the UE from being in a power save mode for an extended period of time due to a loss of connection. In some aspects, if the UE receives an LP-WUS with a power level below a minimum power threshold, the LP-WUS may be considered not to be received. The minimum power threshold may correspond to the sensitivity of the LP-WUR.

[0055] At 312, the UE receives a signal using the primary radio. As described above, the UE may receive a paging signal using the primary radio. The UE may also perform data transmissions to and from the base station. If the UE is in RRC inactive mode, the UE may also perform early measurements of neighboring cells using the primary radio.

[0056] At 314, the UE determines whether the timer is still running. If the timer is still running, control moves to 310 and the primary radio remains on. Otherwise, control moves to 308 and the primary radio is disconnected.

[0057] In some aspects, if the UE uses the first three methods discussed in 306 to determine whether to disconnect or connect the primary radio, the UE does not start or check the timer. Therefore, after being connected, the primary radio remains connected until the UE receives an LP-WUS indicating disconnection of the primary radio. In this case, at 314, the UE determines whether an LP-WUS indicating disconnection of the primary radio is received.

[0058] Figure 4 An example method 400 for detecting LP-WUS is illustrated. The example method 400 provides Figure 3 Detailed description of step 302 of the present invention. For example, the UE needs to know the combination of frequency band / frequency point and time position to receive the LP-WUS. The example method 400 describes how the UE determines one or more such combinations (or one or more REs) to receive one or more LP-WUS. The example method 400 is provided for illustration purposes only and is not intended to limit the disclosed aspects. For convenience and not limitation, reference may be made to Figure 1 , Figure 2 and Figure 6 Description of the elements Figure 4 Example method 400 may represent an electronic device (eg, Figure 1 The example method 400 may also be performed by (controlled or implemented by) the UE 102 and the base station 104. Figure 2 The electronic device 200 and / or Figure 6 The example method 400 is not limited to the specific aspects depicted in those figures, and other systems may be used to perform the method, as will be appreciated by those skilled in the art. It should be understood that not all operations may be required, and that these operations may not be performed in the same manner as described above. Figure 4 The same sequence as shown is performed.

[0059] At 402, the UE receives a configuration message from a base station. The UE may determine the frequency band / frequency point and time position of the LP-WUS based on the configuration message. In some aspects, the UE may receive the configuration message via higher layer signaling, and the configuration message may be included in an RRC message. When the primary radio is turned on, the UE may receive the configuration message using the primary radio. In some aspects, the UE may have previously received the configuration message, or the configuration message is hard-coded in the UE. In this case, at 402, the UE may retrieve the configuration message from the UE's memory and may disconnect the UE's primary radio.

[0060] At 404, the UE may determine whether to perform LP synchronization. For example, the UE needs to be synchronized with the base station in time and frequency to properly receive the LP-WUS. In some aspects, the UE may use the LP-WUR to synchronize the reception of the LP-WUS, which may be referred to as LP synchronization. Alternatively, the UE may use a traditional RS received via the primary radio to synchronize the reception of the LP-WUS. The configuration message may include an indication of LP synchronization or traditional RS synchronization. If the configuration message indicates LP synchronization, control moves to 406.

[0061] At 406, the UE determines whether LP-WUS is detected. In order to detect LP-WUS, the UE first determines the frequency band / frequency point and time position of the LP-WUS. The base station may allocate a frequency band / frequency point for receiving LP-WUS to the UE via a configuration message or other message. As described above, the allocated frequency band / frequency point may be cell-specific and / or UE-specific. The allocated frequency / frequency point band may be different from or the same as the frequency band / frequency point allocated to the traditional RS. For example, the allocated frequency band / frequency point may be the same as the frequency band / frequency point used for SSB transmission. In this case, interference between the traditional RS and the LP-WUS is expected, but this design is more frequency efficient. For another example, the allocated frequency band / frequency point may be different from the traditional RS frequency band / frequency point. In any case, the UE may determine the frequency band / frequency point based on the configuration message or other message, and tune the LP-WUR to the frequency band / frequency point to receive the LP-WUS.

[0062] After tuning to the frequency band / frequency point, the UE determines the time position of the LP-WUS. In some aspects, the base station periodically sends the LP-WUS. The period of the LP-WUS may be greater than the period of the traditional RS. For example, the periodicity of the LP-WUS may be the same as or greater than the discontinuous reception (DRX) cycle, the extended discontinuous reception (eDRX) cycle, or the paging occasion (PO) cycle. The periodicity of the LP-WUS may be configured by the base station or hard-coded in the UE. In some aspects, the base station may indicate to the UE a receiving window for sending the LP-WUS. For example, the base station may indicate a 2ms receiving window in each cycle of the periodic transmission of the LP-WUS. Therefore, the UE expects to receive the LP-WUS in the receiving window, but does not know when exactly to receive the LP-WUS in the receiving window. In some aspects, the UE detects the LP-WUS in the receiving window by calculating the correlation value between one or more local sequences and a segment of the received signal in a sliding window manner. As described above, the UE may generate one or more local sequences that can match the LP-WUS. If the segment of the received signal within the receiving window includes an LP-WUS, a correlation value between at least one of the one or more local sequences and the segment of the received signal should be higher than a threshold value. In this case, the UE determines that an LP-WUS is detected as the segment, and control moves to 408.

[0063] At 408, the UE determines whether to perform a post-processing method regarding the detected LP-WUS. In the post-processing method, the UE stores a segment of the received signal in a memory of the UE before calculating correlation values ​​between one or more local sequences and the segment. If the UE determines that the segment of the received signal includes the LP-WUS, the UE retrieves the segment from the memory of the UE and processes the segment as a detected LP-WUS. Alternatively, if the UE determines that the segment stored in the memory of the UE does not include the LP-WUS, the UE discards the segment. The post-processing method enables the UE to process the detected LP-WUS in real time, but requires storage space in the memory of the UE.

[0064] In some aspects, the configuration message may indicate whether to perform the post-processing method. In other aspects, the UE may make its own determination. For example, if the UE is moving at a high speed, the UE may determine to perform the post-processing method. For another example, if the UE's memory storage space is insufficient, the UE may determine not to perform post-processing as discussed below in 410. If the UE determines to perform post-processing, control moves to 412.

[0065] At 412, the UE processes the LP-WUS detected in 406. In some aspects, the UE may retrieve the segment from a memory of the UE and process the segment as a detected LP-WUS. For example, the UE may Figure 3Process the fragment as described in step .

[0066] Referring back to 408, if the UE determines not to perform the post-processing method, control moves to 410. At 410, the UE marks the time position in the reception window of the detected LP-WUS in 406. For example, the reception window may be a 2ms period, and the LP-WUS is detected at the 0.5ms point within the 2ms period. The UE may then mark the 0.5ms point. In the next reception window, the UE may receive the LP-WUS at the 0.5ms point. In other words, for each other reception window in the other reception windows, the UE assumes that the LP-WUS may be received in the same position of the reception window. In some aspects, the UE may calculate a correlation value between the LP-WUS and a segment of the received signal starting at 0.5ms of the reception window. Because the UE has previously detected the LP-WUS at 0.5ms, the correlation value is likely to be greater than a threshold. In other aspects, the UE determines that the segment of the received signal starting at 0.5ms of the reception window is a detected LP-WUS without calculating a correlation value.

[0067] Referring back to 406, if the UE determines that no LP-WUS is detected in the receive window, control moves to 420. In some aspects, the no-detection condition may be due to low received signal strength or quality. For example, the UE may move away from the base station, or the UE may experience an interfering signal.

[0068] At 420, the UE determines the no-detection period between the current time and the last LP-WUS detection time. If the no-detection period is less than the time threshold, control moves back to 406 and the UE attempts to detect LP-WUS in the next receive window. Otherwise, control moves to 414 and the UE detects LP-WUS based on the legacy RS.

[0069] In some aspects, the time threshold may be Figure 3The maximum time period discussed in 310 of is the same. As described above, if no LP-WUS is detected within the maximum time period, the UE may turn on the primary radio. Similarly here, when the time threshold is met, the UE may use the traditional RS to detect the LP-WUS, and the UE needs to turn on the primary radio to receive the traditional RS. In some aspects, the time threshold and / or the maximum time period are configured to distinguish between a temporary no-detection condition and a permanent no-detection condition. For example, due to an interfering signal transmitted by another device nearby, the UE may not be able to detect the LP-WUS in the receive window. The other device may leave or stop transmitting in the next receive window, and therefore the UE may detect the LP-WUS in the next receive window. In this case, the no-detection period does not exceed the time threshold or the maximum time period, and is therefore a temporary no-detection condition. For another example, the UE may move out of the range of the base station supporting the cell where the UE is camped or connected. In this case, the signal from the base station may become too weak to be detected by the UE. If the UE is out of the range of the base station for a long period of time, such as exceeding the maximum time period, the UE is in a permanent no-detection condition. In this case, the UE looks for alternative solutions, such as those described above. Figure 3 Turn on the primary radio as described in 310 , or move to step 414 as described below.

[0070] Referring back to 404, if the UE determines not to perform LP synchronization based on the configuration message, control moves to 414 to perform legacy RS synchronization. In some aspects, the UE performs legacy RS synchronization to determine the frequency band / frequency point and time location of the LP-WUS based on the legacy RS.

[0071] At 414, the UE determines the legacy RS to be used. The configuration message may indicate the legacy RS. As described above, the legacy RS may be any one of an SSB signal, a PSS, a SSS, a PBCH signal, a DMRS, or an SI signal. The UE then determines the frequency band / frequency point and time position of the legacy RS. The frequency band / frequency point and time position of the legacy RS may form a first set of REs for the legacy RS.

[0072] At 416, the UE may determine the frequency band / frequency point and time position of the LP-WUS based on the legacy RS. In some aspects, the legacy RS may be quasi-co-located (QCLed) with the LP-WUS. For example, as described above, the legacy RS may be received in the first group of REs. The LP-WUS may be received in the second group of REs. The first group and the second group may have a frequency offset and / or a time offset. The UE may determine the frequency offset and / or the time offset based on a configuration message received from the base station. Since the UE determines the first group of REs for the legacy RS in 414, the UE may determine the second group of REs for the LP-WUS based on the first group and the frequency offset / time offset. Using the second group of REs, the UE may determine the frequency band / frequency point and time position of the LP-WUS and detect the LP-WUS. In some aspects, the UE may also determine a receive beam based on the legacy RS to receive the LP-WUS. For example, the receive beam of the LP-WUS and the receive beam for receiving the legacy RS may be QCLed. The UE may determine a QLCed beam relationship between the (first) receive beam of the legacy RS and the second receive beam of the LP-WUS based on the configuration message received at 402. For example, the QLCed beam relationship may be a D-type beam relationship. The UE may also determine the (first) receive beam of the legacy RS at 414, and thus determine the (second) receive beam of the LP-WUS based on the receive beam of the legacy RS and the QLCed beam relationship at 416.

[0073] At 418 , the UE processes the LP-WUS detected in 416 in a similar manner as described in 412 .

[0074] In some aspects, for each period of periodic transmission of the LP-WUS, the UE may repeat steps 414, 416, and 418. For example, the LP-WUS may be sent and received using a DRX cycle. The UE may perform steps 414, 416, and 418 in each DRX cycle.

[0075] Figure 5 An example method 500 for generating and sending a LP-WUS is illustrated. The example method 500 is provided for illustration purposes only and is not intended to limit the disclosed aspects. For convenience and not limitation, reference may be made to Figure 1 , Figure 2 and Figure 6 Description of the elements Figure 5 Example method 500 may represent an electronic device (eg, Figure 1 The example method 500 may also be performed by (controlled or implemented by) the UE 102 and the base station 104. Figure 2 The electronic device 200 and / or Figure 6The example method 500 is not limited to the specific aspects depicted in those figures, and other systems may be used to perform the method, as will be appreciated by those skilled in the art. It should be understood that not all operations may be required, and that these operations may not be performed in the same manner as described above. Figure 5 The same sequence as shown is performed.

[0076] At 502, a base station, such as base station 104, generates a LP-WUS. In some aspects, the LP-WUS may indicate a cell of a UE, such as cell 110 of UE 104. Similar to the above Figure 3 As described in 304, the LP-WUS can indicate a cell in three ways. First, the base station can generate the LP-WUS by scrambling the cell ID of the cell with a scrambling sequence. In other words, the base station indicates the cell to which the LP-WUS points by scrambling the cell ID of the cell into the LP-WUS using the scrambling sequence. The scrambling sequence is known to both the base station and the UE. For example, the scrambling sequence may be sent from the base station to the UE in advance. Second, the frequency band / frequency point of the LP-WUS may be cell-specific. For example, the base station may allocate frequency bands / frequency points to different cells. The base station may indicate the cell by sending the LP-WUS on the frequency band / frequency point allocated to the cell. Third, the LP-WUS may include a payload including a cell ID. The base station may encode the cell ID of the cell into the payload. In some aspects, the cell ID of the UE may also include the PCI of the UE.

[0077] In some aspects, the LP-WUS may also indicate a UE, such as UE 104. Similar to the above Figure 3 As described in 304, the LP-WUS can indicate the UE in three ways. First, the base station can generate the LP-WUS by scrambling the UE ID of the UE with a scrambling sequence. In some aspects, the base station can generate the LP-WUS by scrambling both the UE ID and the cell ID with a scrambling sequence. Second, the frequency band / frequency point of the LP-WUS can be UE-specific. For example, a frequency band / frequency point can be allocated to each UE. Therefore, the base station can indicate the UE by sending the LP-WUS on the frequency band / frequency point allocated to the UE. Third, the LP-WUS may include a payload including the UE ID. The base station may encode the UE ID into the payload.

[0078] In some aspects, the LP-WUS may indicate turning on the UE's primary radio, such as primary radio 220. The LP-WUS may also indicate turning off / down the UE's primary radio. The base station indicates the use of the LP-WUS via at least four methods.

[0079] First, the base station may generate the LP-WUS using one of two scrambling sequences: an "on" sequence and an "off" sequence. If the base station wants to turn on the primary radio of the UE, the base station may generate the LP-WUS using the "on" sequence. For example, the base station may generate the LP-WUS by scrambling the "on" sequence with the cell ID and / or UE ID of the UE. Otherwise, the base station may generate the LP-WUS using the "off" sequence. For example, the base station may generate the LP-WUS by scrambling the "off" sequence with the cell ID and / or UE ID of the UE.

[0080] Second, the base station may use the power level of the LP-WUS to indicate. In some aspects, if the base station wants to disconnect or turn down the primary radio of the UE, the base station sends the LP-WUS at a power level above the power threshold. Otherwise, the base station sends the LP-WUS at a power level below the power threshold. In other aspects, if the base station wants to disconnect or turn down the primary radio of the UE, the base station sends the LP-WUS at a power level below the power threshold. Otherwise, the base station sends the LP-WUS at a power level above the power threshold.

[0081] Third, the base station may encode into the LP-WUS an indication of turning on or off the primary radio of the UE. For example, the payload of the LP-WUS may include an indication of turning on or off the primary radio. In some aspects, the payload may also include an indication of turning on or off the LP-WUR of the UE.

[0082] Fourth, as described above, the LP-WUS may indicate turning on the primary radio, and the UE disconnects the primary radio after the timer expires. In this case, the LP-WUS does not indicate disconnecting or turning down the primary radio.

[0083] At 504, the base station sends the LP-WUS to the UE. In some aspects, the base station sends the LP-WUS in a frequency band / frequency point allocated to the LP-WUS. As described above, the frequency band / frequency point can be UE-specific and / or cell-specific. As described above Figure 4 As described in, the base station may also send the LP-WUS periodically and within the receiving window of each period.

[0084] In some aspects, the base station also sends a configuration message to the UE. The base station may send the configuration message before or at the same time as sending the LP-WUS. The configuration message may be received by the primary radio of the UE. The configuration message may indicate to the UE which method to use to determine the cell indicated by the LP-WUS, the UE indicated by the LP-WUS, and / or whether to disconnect or connect the primary radio of the UE. The configuration message may also be Figure 4 The configuration message described in 402.

[0085] At 506, the base station sends a signal to the primary radio of the UE. For example, the base station may send a paging message to the primary radio of the UE to configure the UE to enter RRC connected mode. When the UE is in RRC inactive mode, the base station may also send other data to the UE, such as data for small data communications.

[0086] At 508, the base station receives a signal from the UE. In some aspects, at 506, the UE may receive a paging message from the base station and enter RRC connected mode. The UE may report the results of the early measurements to the base station to reconfigure the primary cell and / or one or more secondary cells of the UE.

[0087] The computer system 600 may also include one or more secondary storage devices or memories 610. The secondary storage 610 may include, for example, a hard disk drive 612 and / or a removable storage device or drive 614. The removable storage drive 614 may be a floppy disk drive, a tape drive, an optical drive, an optical storage device, a tape backup device, and / or any other storage device / drive.

[0088] The removable storage drive 614 may interact with a removable storage unit 618. The removable storage unit 618 includes a computer usable or readable storage device having computer software (control logic) and / or data stored thereon. The removable storage unit 618 may be a floppy disk, a magnetic tape, a compact disk, a DVD, an optical storage disk, and / or any other computer data storage device. The removable storage drive 614 reads from and / or writes to the removable storage unit 618 in a known manner.

[0089] According to some aspects, secondary memory 610 may include other components, tools, or other methods for allowing computer programs and / or other instructions and / or data to be accessed by computer system 600. Such components, tools, or other methods may include, for example, a removable storage unit 622 and an interface 620. Examples of removable storage unit 622 and interface 620 may include a program cartridge and cartridge interface (such as found in video game devices), a removable memory chip (such as an EPROM or PROM) and associated socket, a memory stick and USB port, a memory card and associated memory card slot, and / or any other removable storage unit and associated interface.

[0090] The computer system 600 may also include a communication or network interface 624. The communication interface 624 enables the computer system 600 to communicate and interact with any combination of remote devices, remote networks, remote entities, etc. (individually and collectively referenced by reference numeral 628). For example, the communication interface 624 may allow the computer system 600 to communicate with a remote device 628 via a communication path 626, which may be wired and / or wireless and may include any combination of a LAN, a WAN, the Internet, etc. Control logic and / or data may be sent to and from the computer system 600 via the communication path 626.

[0091] The operations in the foregoing aspects can be implemented in various configurations and architectures. Thus, some or all of the operations in the foregoing aspects may be performed in hardware, software, or in both hardware and software. In some aspects, a tangible, non-transient device or article includes a tangible, non-transient computer-usable or readable medium on which a control logic component (software) is stored, also referred to herein as a computer program product or program storage device. This includes, but is not limited to, a computer system 600, a main memory 608, an auxiliary memory 610, and removable storage units 618 and 622, as well as tangible articles embodying any combination of the foregoing. Such control logic, when executed by one or more data processing devices (such as computer system 600), causes such data processing devices to operate as described herein.

[0092] Based on the teachings contained in this disclosure, it will be apparent to those skilled in the relevant art how to use the Figure 5 The various aspects of the present disclosure may be made and used with data processing devices, computer systems, and / or computer architectures other than those shown. In particular, the various aspects may operate with software, hardware, and / or operating system implementations other than those described herein.

[0093] It should be understood that the Detailed Description section, rather than the Summary and Abstract sections, is intended to be used to interpret the claims. The Summary and Abstract sections may set forth one or more but not all exemplary aspects of the present disclosure as contemplated by the inventors, and thus are not intended to limit the present disclosure or the appended claims in any way.

[0094] Although the present disclosure has been described herein with reference to exemplary aspects of exemplary fields and applications, it should be understood that the present disclosure is not limited thereto. Other aspects and modifications are possible and are within the scope and essence of the present disclosure. For example, and without limiting the generality of this paragraph, the various aspects are not limited to the software, hardware, firmware and / or entities illustrated in the figures and / or described herein. In addition, the various aspects (whether or not explicitly described herein) have significant practicality for fields and applications outside the examples described herein.

[0095] Various aspects have been described herein by means of functional building blocks that illustrate the specific implementation of specific functions and their relationships. For ease of description, the boundaries of these functional building blocks have been arbitrarily defined herein. As long as the specified functions and relationships (or their equivalents) are properly performed, alternative boundaries may be defined. In addition, alternative aspects may use an order different from the order described herein to perform functional blocks, steps, operations, methods, etc.

[0096] References herein to "one embodiment," "an embodiment," "an example embodiment," or similar phrases indicate that the described embodiment may include a particular feature, structure, or characteristic, but every embodiment may not necessarily include the particular feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Furthermore, when a particular feature, structure, or characteristic is described in conjunction with an embodiment, it is within the knowledge of those skilled in the relevant art to incorporate such feature, structure, or characteristic into other aspects, whether or not explicitly mentioned or described herein.

[0097] The breadth and scope of the present disclosure should not be limited by any of the above-described exemplary aspects, but should be defined only in accordance with the following claims and their equivalents.

[0098] It is understood that the use of personally identifiable information should be subject to privacy policies and practices that are generally recognized to meet or exceed industry or government requirements for maintaining user privacy. Specifically, personally identifiable information data should be managed and processed to minimize the risk of unintentional or unauthorized access or use, and the nature of the authorized use should be clearly stated to users.

[0099] The disclosure anticipates that entities responsible for the collection, analysis, disclosure, transmission, storage or other purposes of such personal information data will comply with sound privacy policies and / or privacy measures. Specifically, such entities should implement and adhere to the use of privacy policies and measures that are recognized as meeting or exceeding the industry or government requirements for maintaining the privacy and security of personal information data. Such policies should be easy for users to access and should be updated as changes in the collection and / or use of data occur. Personal information from users should be collected for legal and reasonable entity purposes and should not be shared or sold outside these legal purposes. In addition, such collection / sharing should only be done after receiving the user's informed consent. In addition, such entities should consider taking any necessary steps to protect and safeguard access to such personal information data, and ensure that other entities with access to personal information data comply with the privacy policies and procedures of other entities. In addition, such entities can subject themselves to third-party assessments to prove that they comply with widely accepted privacy policies and practices. In addition, policies and practices should be adapted to specific types of personal information data collected and / or accessed, and to applicable laws and standards including considerations of special jurisdictions. For example, in the United States, the collection or acquisition of certain health data may be governed by federal and / or state laws, such as the Health Insurance Portability and Accountability Act (HIPAA); while health data in other countries may be subject to other regulations and policies and should be handled accordingly. Therefore, different privacy measures should be advocated for different types of personal data in each country.

Claims

1. A user equipment (UE), the UE comprising: a low power wake-up radio (LP-WUR) and a primary radio, the LP-WUR and the primary radio configured to enable wireless communication with a base station; and a processor communicatively coupled to the LP-WUR and the primary radio and configured to: receiving a first low power wake-up signal (LP-WUS) from the base station using the LP-WUR; Determining a cell that the first LP-WUS corresponds to the UE; determining that the first LP-WUS indicates turning on the primary radio; turning on the primary radio; as well as A paging message is received from the base station using the primary radio.

2. The UE according to claim 1, wherein the processor is further configured to: Using the primary radio to receive a conventional reference signal at a first frequency point, The first LP-WUS is received at a second frequency point.

3. The UE according to claim 1, wherein the processor is further configured to: Using the primary radio to receive a conventional reference signal at a first frequency point, The first LP-WUS is received at the first frequency point with a periodicity using the LP-WUR, wherein the periodicity is: Greater than or equal to the discontinuous reception (DRX) cycle, Greater than or equal to the extended discontinuous reception (eDRX) cycle, or Greater than or equal to the Paging Occasion (PO) period.

4. The UE of claim 1, wherein in order to determine that the first LP-WUS corresponds to the cell of the UE, the processor is further configured to: It is determined that the first LP-WUS is associated with a first local sequence, wherein the first local sequence is generated using a physical cell identifier (PCI) number of the cell. The UE according to claim 4 , wherein the first local sequence is also generated using a UE ID number. 6 . The UE of claim 1 , wherein to determine that the first LP-WUS indicates turning on the primary radio, the processor is further configured to determine that the first LP-WUS is associated with a first local sequence.

7. The UE according to claim 6, wherein the processor is further configured to: receiving a second LP-WUS from the base station using the LP-WUR; determining that the second LP-WUS is associated with a second local sequence; and The primary radio is disconnected in response to the second LP-WUS.

8. The UE according to claim 1, wherein the processor is further configured to: in response to turning on the primary radio, starting a timer; determining that the timer has expired; and In response to expiration of the timer, disconnecting the primary radio. 9 . The UE of claim 1 , wherein to determine that the first LP-WUS indicates turning on the primary radio, the processor is further configured to determine that a power level of the first LP-WUS is above a power threshold.

10. The UE of claim 1, wherein to receive the first LP-WUS, the processor is further configured to: Calculating a correlation value between a received signal and a local sequence; determining that a correlation value between a segment of the received signal and the local sequence is above a correlation threshold; and It is determined that the segment of the received signal includes the first LP-WUS.

11. The UE of claim 1 , wherein to receive the first LP-WUS, the processor is further configured to: determining a first resource element (RE) of a legacy reference signal; Determine the offset value; determining a second RE of the first LP-WUS based on the first RE and the offset value; and The first LP-WUS is received in the second RE.

12. The UE according to claim 11, wherein the processor is further configured to: receiving a configuration message from the base station using the primary radio, The configuration message indicates the legacy reference signal and the offset value.

13. The UE of claim 1 , wherein to receive the first LP-WUS, the processor is further configured to: determining a first receive beam to receive a legacy reference signal; determining a quasi co-located (QCLed) D-type beam relationship between the first receiving beam and a second receiving beam to receive the first LP-WUS; Determining the second receive beam based on the relationship between the first receive beam and the QCLedD type beam; as well as The first LP-WUS is received using the second receive beam.

14. A method of a user equipment (UE), the method comprising: receiving a first low power wake-up signal (LP-WUS) from a base station using the LP-WUR of the UE; Determining a cell that the first LP-WUS corresponds to the UE; determining that the first LP-WUS indicates turning on a primary radio of the UE; turning on the primary radio; as well as A paging message is received from the base station using the primary radio.

15. The method according to claim 14, wherein the determining that the first LP-WUS corresponds to a cell of the UE further comprises: It is determined that the LP-WUS is associated with a first local sequence, wherein the first local sequence is generated using a physical cell identifier (PCI) number of the cell.

16. The method according to claim 14, further comprising: in response to turning on the primary radio, starting a timer; Determining that the timer expires; as well as In response to expiration of the timer, disconnecting the primary radio. 17 . The method of claim 14 , wherein the determining that the first LP-WUS indicates turning on the primary radio of the UE further comprises determining that a power level of the first LP-WUS is above a power threshold.

18. The method of claim 14, wherein the receiving the first LP-WUS from the base station further comprises: Calculating a correlation value between a received signal and a local sequence; determining that a correlation value between a segment of the received signal and the local sequence is greater than a correlation threshold; as well as It is determined that the segment of the received signal includes the first LP-WUS.

19. A non-transitory computer readable medium (CRM) comprising instructions for causing a user equipment (UE) to perform operations when the instructions are executed by one or more processors of the UE, the operations comprising: receiving a first low power wake-up signal (LP-WUS) from a base station using a low power wake-up radio (LP-WUR) of the UE; Determining a cell that the first LP-WUS corresponds to the UE; determining that the first LP-WUS indicates turning on a primary radio of the UE; turning on the primary radio; as well as A paging message is received from the base station using the primary radio.

20. The non-transient CRM according to claim 19, wherein the determining that the first LP-WUS corresponds to a cell of the UE further comprises: It is determined that the first LP-WUS is associated with a first local sequence, wherein the first local sequence is generated using a physical cell identifier (PCI) number of the cell.

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