Method and apparatus in wireless communication system

Abstract

The invention discloses a method and equipment in a wireless communication system. The method comprises the following steps: measuring a first signal; and starting or ending low power wakeup signal monitoring based on the measurement of the first signal; wherein the measurement result comprises reference signal received power (RSRP) and signal to interference plus noise ratio (SINR).

Description

Technical Field

[0001] This invention relates to the field of wireless communication technology, and more specifically, to a method and apparatus in a wireless communication system. Background Technology

[0002] To meet the increased demand for wireless data communication services since the deployment of 4G communication systems, efforts have been made to develop improved 5G or near-5G communication systems. Therefore, 5G or near-5G communication systems are also referred to as "super 4G networks" or "post-LTE systems".

[0003] 5G communication systems are implemented in higher frequency (millimeter wave, mmWave) bands, such as the 60GHz band, to achieve higher data rates. To reduce radio wave propagation loss and increase transmission distance, beamforming, massive MIMO, full-dimensional MIMO (FD-MIMO), array antennas, analog beamforming, and massive MIMO technologies are discussed in 5G communication systems.

[0004] In addition, in 5G communication systems, development is underway to improve system networks based on advanced small cells, cloud radio access networks (RAN), ultra-dense networks, device-to-device (D2D) communication, wireless backhaul, mobile networks, cooperative communication, cooperative multipoint (CoMP), and receiver interference cancellation.

[0005] In 5G systems, hybrid FSK and QAM modulation (FQAM) and sliding window superposition coding (SWSC) have been developed as advanced coding and modulation (ACM), while filter bank multicarrier (FBMC), non-orthogonal multiple access (NOMA) and sparse code multiple access (SCMA) have been developed as advanced access technologies. Summary of the Invention

[0006] According to embodiments of this disclosure, a method for a device (UE) to perform in a wireless communication system is provided, comprising: measuring a first signal; and starting or ending low-power wake-up signal monitoring based on the measurement result of the first signal; wherein the measurement result includes a reference signal received power (RSRP) and a signal-to-interference-plus-noise ratio (SINR).

[0007] In some implementations, the first signal includes at least one of the following: a low-power synchronization signal; a low-power wake-up signal; a synchronization signal block; a primary synchronization signal in the synchronization signal block; and a secondary synchronization signal in the synchronization signal block.

[0008] In some implementations, the measurement results also include at least one of the following: reference signal reception quality (RSRQ); signal-to-noise ratio (SNR).

[0009] In some implementations, starting or ending low-power wake-up signal monitoring based on the measurement results includes: starting or ending low-power wake-up signal monitoring based on the measurement results and a threshold.

[0010] In some implementations, the threshold includes at least one of the following: RSRP threshold, RSRQ threshold, signal-to-interference-plus-noise ratio threshold, signal-to-noise ratio threshold, bit error rate threshold, block error rate threshold, detection rate threshold, and false positive and false negative detection rate thresholds.

[0011] In some implementations, starting or ending low-power wake-up signal monitoring based on the measurement results includes: determining information related to the quality of a second signal based on the measurement results of the first signal; and starting or ending low-power wake-up signal monitoring based on the information related to the quality of the second signal.

[0012] In some implementations, information related to the quality of the second signal includes at least one of the following associated with the second signal: RSRP, RSRQ, signal-to-interference-plus-noise ratio, signal-to-noise ratio, bit error rate, block error rate, detection rate, missed detection, and false detection rate.

[0013] In some implementations, the first signal includes at least one of the following: a synchronization signal block, a primary synchronization signal in the synchronization signal block, and a secondary synchronization signal in the synchronization signal block, and wherein the second signal includes at least one of the following: a low-power synchronization signal and a low-power wake-up signal.

[0014] In some implementations, determining information related to the quality of the second signal based on the measurement results includes determining information related to the quality of the second signal based on at least one of the following: the maximum omnidirectional loss difference between the first radio and the second radio of the UE; the maximum coupling loss difference between the first radio and the second radio of the UE; and the power difference between the base station transmitting on the first radio and the second radio.

[0015] In some implementations, the method further includes the ability to receive on a second radio immediately after a low-power wake-up signal is detected.

[0016] In some implementations, after a first time following the detection of a low-power wake-up signal, the UE is capable of receiving information on a second radio, including first information based on the low-power wake-up signal, wherein the first information includes at least one of the following: information instructing the UE to monitor paging on the second radio; and information instructing the UE to monitor the PDCCH on the second radio.

[0017] In some implementations, the first time includes at least one of the following: processing time for a low-power wake-up signal; wake-up time for a second radio; and synchronization time for a second radio.

[0018] In some implementations, the wake-up time of the second radio is determined based on the UE's ability to perform a second radio wake-up.

[0019] In some implementations, the method further includes reporting the UE's ability to perform a second radio wake-up.

[0020] In some implementations, the synchronization time of the second radio is determined based on at least one of the following: the UE's ability to perform second radio synchronization; whether the synchronization information of the first radio can be used for second radio synchronization; whether the first radio and the second radio reuse some radio frequency components; and whether the UE completes the measurement of the serving cell within the most recent predetermined time.

[0021] In some embodiments, the method further includes determining, based on predetermined conditions, at least one of the following: whether to measure the serving cell on a second radio, whether to relax the measurement period of the serving cell on the second radio, a relaxation factor applied to the measurement period of the serving cell on the second radio, whether to measure neighboring cells on the second radio, whether to relax the measurement period of the neighboring cells on the second radio, a relaxation factor applied to the measurement period of the neighboring cells on the second radio, and whether to offload the measurement of the serving cell on the second radio to the first radio, wherein the predetermined conditions are associated with at least one of the following: the UE's ability to measure the serving cell on the first radio; the UE's measurement result of the serving cell on the second radio; the UE's measurement result of the serving cell on the first radio; the UE's location; the UE's communication quality; and the UE's mobility type or capability.

[0022] In some implementations, the method further includes: determining the state of the UE based on specific conditions; and determining, based on the state of the UE, at least one of the following: measurements of the serving cell on the second radio, measurements of neighboring cells on the second radio, and whether to offload measurements of the serving cell on the second radio to the first radio.

[0023] In some embodiments, the method further includes at least one of the following: if the measurement result of the serving cell on the second radio is higher than a first threshold, then perform at least one of the following: apply a first relaxation factor to the measurement of the serving cell on the second radio, apply a second relaxation factor to the measurement of neighboring cells on the second radio, and not offload at least a portion of the measurement of the serving cell on the second radio to the first radio; if the measurement result of the serving cell on the second radio is higher than a second threshold and / or the measurement result on the first radio is higher than a third threshold, then perform at least one of the following: apply a third relaxation factor to the measurement of the serving cell on the second radio, and not offload at least a portion of the measurement of the serving cell on the second radio to the first radio. A fourth relaxation factor is applied to the measurements of the neighboring cell, and at least a portion of the measurements of the serving cell on the second radio are offloaded to the first radio; if the measurement result of the serving cell on the first radio is higher than a fourth threshold, then all measurements of the serving cell on the second radio are offloaded to the first radio; and if the measurement result of the serving cell on the second radio is higher than a fifth threshold and / or the measurement result on the first radio is higher than a sixth threshold, then at least one of the following is performed: a fifth relaxation factor is applied to the measurements of the serving cell on the second radio, and at least a portion of the measurements of the serving cell on the second radio are offloaded to the first radio.

[0024] In some embodiments, the method further includes: when at least a portion of the measurements of the serving cell on the second radio are offloaded to the first radio, determining the measurement results of the serving cell on the first radio based on the measurement results of the serving cell on the second radio.

[0025] In some implementations, determining the measurement results of the serving cell on the first radio based on the measurement results of the serving cell on the second radio includes determining the measurement results of the serving cell on the first radio based on at least one of the following: the maximum omnidirectional loss difference between the first radio and the second radio of the UE; the maximum coupling loss difference between the first radio and the second radio of the UE; and the power difference of the base station transmitting on the first radio and the second radio.

[0026] According to embodiments of this disclosure, a method performed by a base station in a wireless communication system is provided, comprising: transmitting a first signal; and transmitting a low-power wake-up signal; wherein the monitoring of starting or ending the low-power wake-up signal is based on measurement results of the first signal; wherein the measurement results include reference signal received power (RSRP) and signal-to-interference-plus-noise ratio (SINR).

[0027] According to embodiments of this disclosure, a user equipment (UE) in a wireless communication system is provided, including: a transceiver; and a controller coupled to the transceiver and configured to perform the aforementioned method.

[0028] According to embodiments of this disclosure, a base station in a wireless communication system is provided, comprising: a transceiver; and a controller coupled to the transceiver and configured to perform the aforementioned method. Attached Figure Description

[0029] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings of the embodiments will be briefly described below. Obviously, the drawings described below only relate to some embodiments of this disclosure and are not intended to limit this disclosure. In the drawings:

[0030] Figure 1 A schematic diagram of an example wireless network according to various embodiments of the present disclosure is shown;

[0031] Figure 2a and Figure 2b Example wireless transmission and reception paths according to various embodiments of this disclosure are shown;

[0032] Figure 3a Example user equipment (UE) according to various embodiments of the present disclosure is shown;

[0033] Figure 3b Example gNBs are shown according to various embodiments of this disclosure;

[0034] Figure 4 Flowcharts of methods performed by a UE according to various embodiments of the present disclosure are shown;

[0035] Figure 5 Flowcharts of methods performed by a base station according to various embodiments of the present disclosure are shown;

[0036] Figure 6 Block diagrams of a UE according to various embodiments of the present disclosure are shown; and

[0037] Figure 7 A block diagram of a base station according to various embodiments of the present disclosure is shown. Detailed Implementation

[0038] The following description, with reference to the accompanying drawings, is provided to aid in a thorough understanding of the various embodiments of this disclosure as defined by the claims and their equivalents. This description includes various specific details to aid understanding but should be considered exemplary only. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the various embodiments described herein without departing from the scope and spirit of this disclosure. Furthermore, for clarity and brevity, descriptions of well-known functions and structures may be omitted.

[0039] The terms and wording used in the following description and claims are not limited to their dictionary meanings, but are merely used by the inventors to enable a clear and consistent understanding of this disclosure. Therefore, it will be apparent to those skilled in the art that the following description of various embodiments of this disclosure is for illustrative purposes only and not for limiting the purpose of this disclosure as defined in the appended claims and their equivalents.

[0040] It should be understood that the singular forms of “one,” “an,” and “the” include plural references unless the context clearly indicates otherwise. Thus, for example, the reference to “component surface” includes one or more such surfaces.

[0041] The terms “comprising” or “may include” refer to the presence of a corresponding disclosed function, operation, or component that may be used in the various embodiments of this disclosure, rather than limiting the presence of one or more additional functions, operations, or features. Furthermore, the terms “comprising” or “having” may be interpreted as indicating certain characteristics, numbers, steps, operations, constituent elements, components, or combinations thereof, but should not be construed as excluding the possibility of the presence of one or more other characteristics, numbers, steps, operations, constituent elements, components, or combinations thereof.

[0042] The term "or" as used in the various embodiments of this disclosure includes any of the listed terms and all combinations thereof. For example, "A or B" may include A, may include B, or may include both A and B.

[0043] Unless otherwise defined, all terms used in this disclosure (including technical or scientific terms) have the same meaning as understood by one of those skilled in the art as described herein. Common terms as defined in dictionaries are to be interpreted as having a meaning consistent with the context in the relevant technical field and should not be interpreted ideally or overly formally unless expressly defined in this disclosure.

[0044] Figure 1 An example wireless network 100 according to various embodiments of the present disclosure is shown. Figure 1 The embodiment of the wireless network 100 shown is for illustrative purposes only. Other embodiments of the wireless network 100 can be used without departing from the scope of this disclosure.

[0045] Wireless network 100 includes gNodeB (gNB) 101, gNB 102, and gNB 103. gNB 101 communicates with gNB 102 and gNB 103. gNB 101 also communicates with at least one Internet Protocol (IP) network 130 (such as the Internet, a proprietary IP network, or other data network).

[0046] Depending on the network type, other well-known terms such as "base station" or "access point" can be used instead of "gNodeB" or "gNB". For convenience, the terms "gNodeB" and "gNB" are used in this patent document to refer to network infrastructure components that provide wireless access for remote terminals. Furthermore, depending on the network type, other well-known terms such as "mobile station", "user station", "remote terminal", "wireless terminal", or "user device" can be used instead of "user equipment" or "UE". For convenience, the terms "user equipment" and "UE" are used in this patent document to refer to remote wireless devices that wirelessly access the gNB, whether the UE is a mobile device (such as a mobile phone or smartphone) or a fixed device as commonly understood (such as a desktop computer or vending machine).

[0047] gNB 102 provides wireless broadband access to network 130 to a first plurality of user equipments (UEs) within its coverage area 120. The first plurality of UEs includes: UE 111, which may be located in a small business (SB); UE 112, which may be located in an enterprise (E); UE 113, which may be located in a WiFi hotspot (HS); UE 114, which may be located in a first residence (R); UE 115, which may be located in a second residence (R); and UE 116, which may be a mobile device (M), such as a cellular phone, wireless laptop computer, wireless PDA, etc. gNB 103 provides wireless broadband access to network 130 to a second plurality of UEs within its coverage area 125. The second plurality of UEs includes UE 115 and UE 116. In some embodiments, one or more of gNBs 101-103 are capable of communicating with each other and with UEs 111-116 using 5G, LTE, LTE-A, WiMAX, or other advanced wireless communication technologies.

[0048] The dashed lines indicate the approximate extent of coverage areas 120 and 125, which are shown as approximately circular for illustrative and explanatory purposes only. It should be clearly understood that coverage areas associated with the gNB, such as coverage areas 120 and 125, can have other shapes, including irregular shapes, depending on the configuration of the gNB and variations in the radio environment associated with natural and man-made obstacles.

[0049] As described in more detail below, one or more of gNB 101, gNB 102, and gNB 103 include a 2D antenna array as described in embodiments of this disclosure. In some embodiments, one or more of gNB 101, gNB 102, and gNB 103 support codebook design and architecture for systems having 2D antenna arrays.

[0050] although Figure 1 An example of a wireless network 100 is shown, but it is possible to... Figure 1 Various modifications can be made. For example, wireless network 100 can include any number of gNBs and any number of UEs in any suitable arrangement. Furthermore, gNB 101 can communicate directly with any number of UEs and provide those UEs with wireless broadband access to network 130. Similarly, each gNB 102-103 can communicate directly with network 130 and provide UEs with direct wireless broadband access to network 130. In addition, gNBs 101, 102, and / or 103 can provide access to other or additional external networks (such as external telephone networks or other types of data networks).

[0051] Figure 2a and Figure 2b Example wireless transmit and receive paths according to this disclosure are shown. In the following description, transmit path 200 can be described as being implemented in a gNB (such as gNB 102), while receive path 250 can be described as being implemented in a UE (such as UE 116). However, it should be understood that receive path 250 can be implemented in a gNB, and transmit path 200 can be implemented in a UE. In some embodiments, receive path 250 is configured to support codebook design and structure for a system having a 2D antenna array as described in embodiments of this disclosure.

[0052] The transmit path 200 includes a channel coding and modulation block 205, a serial-to-parallel (S-to-P) block 210, an N-point inverse fast Fourier transform (IFFT) block 215, a parallel-to-serial (P-to-S) block 220, a cyclic prefix addition block 225, and an up-converter (UC) 230. The receive path 250 includes a down-converter (DC) 255, a cyclic prefix removal block 260, a serial-to-parallel (S-to-P) block 265, an N-point fast Fourier transform (FFT) block 270, a parallel-to-serial (P-to-S) block 275, and a channel decoding and demodulation block 280.

[0053] In transmit path 200, channel coding and modulation block 205 receives a set of information bits, applies coding (such as low-density parity-check (LDPC) coding), and modulates the input bits (such as using quadrature phase shift keying (QPSK) or quadrature amplitude modulation (QAM)) to generate a sequence of frequency-domain modulated symbols. Serial-to-parallel (S-to-P) block 210 converts (e.g., demultiplexes) the serial modulated symbols into parallel data to generate N parallel symbol streams, where N is the number of IFFT / FFT points used in gNB 102 and UE 116. N-point IFFT block 215 performs IFFT operations on the N parallel symbol streams to generate a time-domain output signal. Parallel-to-serial block 220 converts (e.g., multiplexes) the parallel time-domain output symbols from N-point IFFT block 215 to generate a serial time-domain signal. Cyclic prefix addition block 225 inserts a cyclic prefix into the time-domain signal. Upconverter 230 modulates (e.g., upconverts) the output of the added cyclic prefix block 225 to an RF frequency for transmission via a wireless channel. The signal can also be filtered at the baseband before being converted to the RF frequency.

[0054] The RF signal transmitted from gNB 102 reaches UE 116 after passing through the wireless channel, and UE 116 performs the opposite operation to that at gNB 102. Downconverter 255 downconverts the received signal to the baseband frequency, and cyclic prefix removal block 260 removes the cyclic prefix to generate a serial time-domain baseband signal. Serial-to-parallel block 265 converts the time-domain baseband signal into a parallel time-domain signal. N-point FFT block 270 performs an FFT algorithm to generate N parallel frequency-domain signals. Parallel-to-serial block 275 converts the parallel frequency-domain signals into a sequence of modulated data symbols. Channel decoding and demodulation block 280 demodulates and decodes the modulated symbols to recover the original input data stream.

[0055] Each of gNBs 101-103 can implement a transmission path 200 similar to that used for transmission to UEs 111-116 in the downlink, and a reception path 250 similar to that used for reception from UEs 111-116 in the uplink. Similarly, each of UEs 111-116 can implement a transmission path 200 for transmission to gNBs 101-103 in the uplink, and a reception path 250 for reception from gNBs 101-103 in the downlink.

[0056] Figure 2a and Figure 2b Each of the components can be implemented using only hardware, or using a combination of hardware and software / firmware. As a specific example, Figure 2a and Figure 2bAt least some of the components can be implemented in software, while others can be implemented in configurable hardware or a combination of software and configurable hardware. For example, FFT block 270 and IFFT block 215 can be implemented as configurable software algorithms, wherein the value of the number of points N can be modified according to the implementation method.

[0057] Furthermore, although the description uses FFT and IFFT, this is merely illustrative and should not be construed as limiting the scope of this disclosure. Other types of transforms, such as the Discrete Fourier Transform (DFT) and Inverse Discrete Fourier Transform (IDFT) functions, can be used. It should be understood that for DFT and IDFT functions, the value of variable N can be any integer (such as 1, 2, 3, 4, etc.), while for FFT and IFFT functions, the value of variable N can be any integer that is a power of 2 (such as 1, 2, 4, 8, 16, etc.).

[0058] although Figure 2a and Figure 2b An example of a wireless transmit and receive path is shown, but it is possible to modify it further. Figure 2a and Figure 2b Make various changes. For example, Figure 2a and Figure 2b The various components can be combined, further subdivided, or omitted, and additional components can be added as needed. Furthermore, Figure 2a and Figure 2b This is intended to illustrate examples of the types of send and receive paths that can be used in a wireless network. Any other suitable architecture can be used to support wireless communication in a wireless network.

[0059] Figure 3a Example UE 116 according to this disclosure is shown. Figure 3a The embodiment of UE 116 shown is for illustrative purposes only, and Figure 1 UEs 111-115 can have the same or similar configurations. However, UEs have a wide variety of configurations, and Figure 3a This disclosure is not intended to limit the scope of any particular implementation of the UE.

[0060] UE 116 includes an antenna 305, a radio frequency (RF) transceiver 310, a transmit (TX) processing circuitry 315, a microphone 320, and a receive (RX) processing circuitry 325. UE 116 also includes a speaker 330, a processor / controller 340, an input / output (I / O) interface 345, multiple input devices 350, a display 355, and memory 360. Memory 360 includes an operating system (OS) 361 and one or more applications 362.

[0061] RF transceiver 310 receives incoming RF signals transmitted by a gNB of wireless network 100 from antenna 305. RF transceiver 310 down-converts the incoming RF signals to generate an intermediate frequency (IF) or baseband signal. The IF or baseband signal is sent to RX processing circuitry 325, which generates a processed baseband signal by filtering, decoding, and / or digitizing the baseband or IF signal. RX processing circuitry 325 sends the processed baseband signal to speaker 330 (e.g., for voice data) or to processor / controller 340 (e.g., for web browsing data) for further processing.

[0062] TX processing circuitry 315 receives analog or digital voice data from microphone 320, or other outgoing baseband data (such as network data, email, or interactive video game data) from processor / controller 340. TX processing circuitry 315 encodes, multiplexes, and / or digitizes the outgoing baseband data to generate processed baseband or IF signals. RF transceiver 310 receives the processed outgoing baseband or IF signals from TX processing circuitry 315 and up-converts the baseband or IF signals into RF signals transmitted via antenna 305.

[0063] The processor / controller 340 may include one or more processors or other processing devices and execute an OS 361 stored in memory 360 to control the overall operation of the UE 116. For example, the processor / controller 340 may control the reception of forward channel signals and the transmission of reverse channel signals via RF transceiver 310, RX processing circuitry 325, and TX processing circuitry 315 according to known principles. In some embodiments, the processor / controller 340 includes at least one microprocessor or microcontroller.

[0064] The processor / controller 340 is also capable of executing other processes and programs residing in the memory 360, such as operations for channel quality measurement and reporting for a system having a 2D antenna array as described in the embodiments of this disclosure. The processor / controller 340 is capable of moving data into or out of the memory 360 as needed for the execution of the process. In some embodiments, the processor / controller 340 is configured to execute an application 362 based on OS 361 or in response to signals received from a gNB or operator. The processor / controller 340 is also coupled to an I / O interface 345, which provides the UE 116 with the ability to connect to other devices such as laptop computers and handheld computers. The I / O interface 345 is a communication path between these accessories and the processor / controller 340.

[0065] The processor / controller 340 is also coupled to input devices(s)350 and a display(s)355. An operator of the UE 116 can use the input devices(s)350 to input data into the UE 116. The display(s)355 may be a liquid crystal display (LCD) or other display capable of displaying text and / or at least limited graphics (such as from a website). Memory 360 is coupled to the processor / controller 340. A portion of the memory 360 may include random access memory (RAM), while another portion of the memory 360 may include flash memory or other read-only memory (ROM).

[0066] although Figure 3a An example of UE 116 is shown, but it is possible to... Figure 3a Make various changes. For example, Figure 3a The various components can be combined, further subdivided, or omitted, and additional components can be added as needed. As a specific example, the processor / controller 340 can be divided into multiple processors, such as one or more central processing units (CPUs) and one or more graphics processing units (GPUs). Moreover, although... Figure 3a The UE116 is shown configured as a mobile phone or smartphone, but the UE can be configured to operate as other types of mobile or fixed devices.

[0067] Figure 3b An example gNB 102 according to this disclosure is shown. Figure 3b The embodiment of gNB 102 shown is for illustrative purposes only, and Figure 1 Other gNBs can have the same or similar configurations. However, gNBs have a wide variety of configurations, and Figure 3b The scope of this disclosure is not limited to any particular implementation of the gNB. It should be noted that gNB 101 and gNB 103 can include the same or similar structures as gNB 102.

[0068] like Figure 3b As shown, gNB 102 includes multiple antennas 370a-370n, multiple RF transceivers 372a-372n, transmit (TX) processing circuitry 374, and receive (RX) processing circuitry 376. In some embodiments, one or more of the multiple antennas 370a-370n include a 2D antenna array. gNB 102 also includes a controller / processor 378, a memory 380, and a backhaul or network interface 382.

[0069] RF transceivers 372a-372n receive incoming RF signals, such as signals transmitted by the UE or other gNBs, from antennas 370a-370n. RF transceivers 372a-372n down-convert the incoming RF signals to generate IF or baseband signals. The IF or baseband signals are sent to RX processing circuitry 376, which generates processed baseband signals by filtering, decoding, and / or digitizing the baseband or IF signals. RX processing circuitry 376 sends the processed baseband signals to controller / processor 378 for further processing.

[0070] The TX processing circuit 374 receives analog or digital data (such as voice data, network data, email, or interactive video game data) from the controller / processor 378. The TX processing circuit 374 encodes, multiplexes, and / or digitizes the outgoing baseband data to generate a processed baseband or IF signal. RF transceivers 372a-372n receive the outgoing processed baseband or IF signal from the TX processing circuit 374 and up-convert the baseband or IF signal into an RF signal transmitted via antennas 370a-370n.

[0071] The controller / processor 378 may include one or more processors or other processing devices that control the overall operation of the gNB 102. For example, the controller / processor 378 may control the reception of forward channel signals and the transmission of backward channel signals via RF transceivers 372a-372n, RX processing circuitry 376, and TX processing circuitry 374, according to known principles. The controller / processor 378 may also support additional functions, such as more advanced wireless communication functions. For example, the controller / processor 378 may perform a BIS process, such as by a blind interference sensing (BIS) algorithm, and decode the received signal after subtracting interference. The controller / processor 378 may support any of a wide variety of other functions in the gNB 102. In some embodiments, the controller / processor 378 includes at least one microprocessor or microcontroller.

[0072] The controller / processor 378 is also capable of executing programs and other processes, such as a basic operating system, residing in the memory 380. The controller / processor 378 is also capable of supporting channel quality measurement and reporting for systems having 2D antenna arrays as described in embodiments of this disclosure. In some embodiments, the controller / processor 378 supports communication between entities such as web RTCs. The controller / processor 378 is capable of moving data into or out of the memory 380 as needed for the execution of processes.

[0073] The controller / processor 378 is also coupled to a backhaul or network interface 382. The backhaul or network interface 382 allows the gNB 102 to communicate with other devices or systems via a backhaul connection or over a network. The backhaul or network interface 382 is capable of supporting communication via any suitable wired or wireless connection(s). For example, when the gNB 102 is implemented as part of a cellular communication system (such as a cellular communication system supporting 5G or new radio access technologies or NR, LTE, or LTE-A), the backhaul or network interface 382 allows the gNB 102 to communicate with other gNBs via a wired or wireless backhaul connection. When the gNB 102 is implemented as an access point, the backhaul or network interface 382 allows the gNB 102 to communicate with a larger network (such as the Internet) via a wired or wireless local area network or via a wired or wireless connection. The backhaul or network interface 382 includes any suitable architecture supporting communication via a wired or wireless connection, such as an Ethernet or RF transceiver.

[0074] Memory 380 is coupled to controller / processor 378. A portion of memory 380 may include RAM, while another portion may include flash memory or other ROM. In some embodiments, multiple instructions, such as a BIS algorithm, are stored in memory. The multiple instructions are configured to cause controller / processor 378 to perform the BIS process and decode the received signal after subtracting at least one interference signal determined by the BIS algorithm.

[0075] As described in more detail below, the transmit and receive paths of the gNB 102 (implemented using RF transceivers 372a-372n, TX processing circuitry 374, and / or RX processing circuitry 376) support aggregated communication with FDD and TDD cells.

[0076] although Figure 3b An example of gNB 102 is shown, but it is possible to compare it with other models. Figure 3b Various modifications can be made. For example, gNB102 can include any number of... Figure 3a Each component shown. As a specific example, an access point can include multiple backhaul or network interfaces 382, ​​and a controller / processor 378 can support routing functions to route data between different network addresses. As another specific example, although shown as a single instance including TX processing circuitry 374 and a single instance including RX processing circuitry 376, the gNB 102 can include multiple instances of each (such as one for each RF transceiver).

[0077] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0078] The text and accompanying drawings are provided by way of example only to aid the reader in understanding this disclosure. They are not intended and should not be construed as limiting the scope of this disclosure in any way. Although certain embodiments and examples have been provided, it will be apparent to those skilled in the art, based on the content disclosed herein, that changes may be made to the illustrated embodiments and examples without departing from the scope of this disclosure.

[0079] With the development of wireless communication systems, energy consumption has increased further along with the improvement of system capacity and capabilities. Unlike network nodes such as base stations that have easy access to power, user equipment (UE), such as smartphones, primarily uses batteries with limited energy as their power source. The design of a Low-power Wake-up Signal and Receiver (LP-WUS / WUR) allows UE to operate at lower power consumption by turning off the main radio (MR) and turning on the low-power radio (LR). When a service request arises, the network can instruct the UE via LP-WUS to meet the corresponding service requirement. This LP-WUS / WUR design enables both UE and the network to save energy while maintaining low latency, thereby extending the device's battery life. However, many problems remain to be solved in how to support this design within wireless communication systems.

[0080] Figure 4 A flowchart of a method performed by a UE according to various embodiments of the present disclosure is shown.

[0081] refer to Figure 4 In step S401, a first signal is measured. In step S402, based on the measurement result of the first signal, low-power wake-up signal monitoring is started or stopped. Optionally, the measurement result includes the reference signal received power (RSRP) and the signal-to-interference-plus-noise ratio (SINR).

[0082] Methods according to various embodiments of this disclosure are described below.

[0083] Methods for entering and / or exiting LP-WUS monitoring

[0084] In networks employing LP-WUS, different UEs have varying capabilities for LP-WUS detection, monitoring, and reception due to differences in their LR (or LP-WUR) implementation methods. The following describes a method for determining whether a UE can begin (or activate, start, open, enter, etc., without limiting the scope of similar wording) and end (or deactivate, stop, close, exit, etc., without limiting the scope of similar wording) monitoring of Low Power Wake-up Signals (LP-WUS):

[0085] UEs that support LP-WUS should assess the quality of the downlink channel and / or signal in which their LP-WUS is located, and determine whether they can enter and / or exit the state of monitoring LP-WUS based on the assessment results.

[0086] When the UE needs to determine whether it can enter a state of monitoring LP-WUS, it can directly evaluate its channel and / or the low-power synchronization signal (LP-SS) and LP-WUS received on the LR. Alternatively, it can evaluate its channel and / or the primary synchronization signal (PSS) or secondary synchronization signal (SSS) in the synchronization signal resource block received on the MR, and then evaluate the quality of the channel and / or signal received on the LR after scaling (scaling, offsetting, or correcting) based on the evaluation results obtained on the MR. When the evaluation is performed on the MR, this method of evaluating the quality of the channel and / or signal transmitted and received on the LR based on the MR results can also be implicit, i.e., directly setting a threshold based on the evaluation results on the MR for judgment.

[0087] When the UE needs to determine whether it can exit the state of monitoring LP-WUS, it can evaluate its channel and / or the low-power synchronization signal (LP-SS), LP-WUS, etc., received on the LR. The aforementioned evaluation of the channel and / or channel quality can be performed using one or more of the following metrics based on the aforementioned reference signals (such as PSS, SSS, LP-SS, LP-WUS, etc.): Reference Signal Received Power (RSRP), Reference Signal Received Quality (RSRQ), Signal-to-Interference Ratio (SINR), Signal-to-Noise Ratio (SNR), etc.

[0088] The threshold that determines whether a UE can enter and / or exit LP-WUS monitoring can be a fixed value of the same type as the measurement result, or a value indicated to the UE by the network. Alternatively, it can be a combination of both: when indicated by the network, the threshold is the value indicated by the network; when no indication is given, a default fixed value is applied.

[0089] The aforementioned thresholds can also be other types of values ​​that correspond to the measurement results. For example, when the measurement result type is RSRP, the threshold can be a pre-set number corresponding to the RSRP measurement result. As another example, when the measurement result type is SNR, the threshold can be the corresponding error rate (such as bit error rate (BER), block error rate (BLER), missed detection rate, and false detection rate) calculated by the UE based on its own implementation from the measured SNR result. Similarly, as mentioned earlier, this correspondence can be pre-configured, issued by the network, determined by the UE based on its own implementation, or a combination of the above methods.

[0090] When a UE assesses the quality of its channel and / or signal on the LR based on its channel and / or reference signal (such as the aforementioned PSS / SSS, etc.) measurements on the MR, through a conversion process, this conversion can be based on the UE's self-assessment information regarding the differences between its LR and MR implementations and / or auxiliary information provided by the network. This information includes, but is not limited to: the UE's assessment of the difference in maximum isotropic loss (MIL) between its LR and MR, the UE's assessment of the difference in maximum coupling loss (MCL) between its LR and MR, and the difference in power transmitted on its LR and MR provided by the network.

[0091] When a UE self-assesses the MIL or MCL differences between its LR and MR, these differences can be based on variations in the design and implementation of its LR and MR, including but not limited to differences in noise figure (NF) and antenna gain. When the network-based base station transmits information about the power differences between LR and MR, it can do so via system broadcast to the UE.

[0092] When the UE measures its LR-SS SNR on the LR and converts it into false positive and false negative rates to assess channel quality, one possible description of the above method could be:

[0093] The UE should monitor the link quality of the downlink LR based on the reference signal LR-SS. On the reference signal resource configured to evaluate entry into LP-WUS monitoring, the UE should assess the link quality of the downlink LR and compare it with thresholds Q_entrance and Q_exit. This process is designed to monitor the link quality of the downlink LR.

[0094] The threshold Q_entrance is defined as the level of reliable reception of the downlink radio link and corresponds to the miss detection and false detection rates (Miss_error_rate_entrance) defined in Table 1 below.

[0095] The threshold Q_exit is defined as the level at which the downlink radio link cannot be reliably received, and corresponds to the miss detection and false detection rates (Miss_error_rate_exit) for exit as defined in Table 1 below.

[0096] In this example, when the UE is already in a state of monitoring LP-WUS, its reference signal can be either LP-SS or LP-WUS.

[0097] At this point, Table 1 shows the corresponding thresholds mentioned in the aforementioned method, which are pre-configured fixed values, namely the entry and exit missed detection and false detection rates corresponding to configuration 0 in Table 1 below.

[0098] Table 1. Missed and false detection rates for entry and exit.

[0099]

[0100] In this example, if the corresponding thresholds mentioned in the aforementioned method can be issued via the network, then one representation of Table 1 can also be as shown in Table 2 below. In this case, the network can indicate the configured number (0 or 1 in Table 2 below) to the UE through system information. Then, the thresholds Q_entrance and Q_exit are the missed detection and false detection rates corresponding to the corresponding configuration number (0 or 1 in the corresponding row of Table 2 below).

[0101] Table 2 Missed Detection and False Detection Rates for Entry and Exit

[0102]

[0103] Furthermore, the entry and / or exit thresholds can be configured using a combination of pre-configuration and network-issued methods, as mentioned above. Referring to Table 1, one possible approach is that the entry and / or exit false positive and false negative rates are determined by the network through parameters in higher-layer messages, such as the entry and / or exit false positive and false negative rate (lpwusEntranceExitErrorRate). When the UE is not configured with entry and / or exit thresholds from the network via lpwusEntranceExitErrorRate information, the UE defaults to configuration 0 in Table 1. In this case, the pre-configured configuration 0 in Table 1 is a default threshold configuration, while the network can instruct the UE to configure the thresholds to other values ​​through parameters in higher-layer messages.

[0104] Similarly, referring to Table 2, another way to describe the above configuration method is as follows: the false positive and false negative rates for entry and / or exit are determined by the network through parameters in higher-layer messages, such as lpwusEntranceExitConfiguration, to specify the applicable configuration sequence number (such as 0 and 1 in Table 2). When the UE is not configured with the applicable entry and / or exit threshold configuration sequence number from the network via lpwusEntranceExitConfiguration information, the UE defaults to configuration 0 in Table 2 to determine the entry and / or exit threshold. In this case, the pre-configured configuration 0 in Table 2 is a default threshold configuration, while the network can instruct the UE to configure the entry and / or exit threshold to the values ​​corresponding to other configuration sequence numbers in Table 2 through parameters in higher-layer messages.

[0105] The two possible threshold configuration combinations mentioned above can also be combined with each other, but we will not go into exhaustive details here.

[0106] When the UE assesses the channel quality on the LR, i.e., the false positive and false negative rates in this case, it is below the Miss_error_rate_entrance, the UE can start LP-WUS monitoring.

[0107] When the UE assesses the channel quality on the LR, i.e., the false positive and false negative rates in this case, it is higher than Miss_error_rate_exit, the UE can stop LP-WUS monitoring.

[0108] In this example, as described in the scheme, the measured index SNR can also be other quantities such as RSRP or RSRQ, which are converted into false positive and false negative rates or other indicators in a similar way, and their entry and / or exit thresholds are determined by similar pre-configuration and / or network-deployed configuration methods, and combined with the judgment of whether LP-WUS monitoring can be started or stopped.

[0109] As described in the scheme, the threshold indicator can also be a quantity of the same type as the measurement result that does not require conversion. In this example, if RSRP is measured and it is not converted into other different types of indicators, the threshold is also determined by the RSRP value. Its configuration method can be pre-configuration, network-issued configuration sequence number, network-issued configuration value, or a combination thereof. The possible descriptions for these cases will not be exhaustive or elaborated here.

[0110] In the current example, it is not explicitly required that the SNR obtained based on the reference signal LR-SS measurement be converted into a corresponding method or conversion method for entering and / or exiting missed detection and false detection rates. In this case, it can be understood that such conversion or corresponding method is determined by the UE based on its own implementation.

[0111] When the UE measures the SSB-based RSRP (Synchronization Signal based Reference Signal Received Power, SS-RSRP) on the MR and evaluates the channel quality on the LR by conversion, one possible description of the above method could be:

[0112] The UE should monitor the downlink LR link quality based on the SSBs received on the MR. On the SSB resources of the MR configured for LP-WUS monitoring, the UE should measure the RSRP of the MR's SSBs, apply its conversion relationship between MR and LR, convert the measured RSRP of the MR's SSBs into an inferred RSRP for LP-WUS received on the LR, and evaluate the LR channel quality based on this inferred result. The downlink LR channel quality is then compared with thresholds Q_entrance and Q_exit. This process aims to monitor the downlink LR link quality.

[0113] Specifically, the conversion relationship (or correction factor, multiplication factor, etc.) between the RSRP measurement result of SSB on MR and the RSRP received by LP-WUS on LR should be determined and calibrated by the UE based on its own implementation. As described in the scheme, the UE's determination and calibration of this conversion relationship (or correction factor, multiplication factor, etc.) should consider the differences in maximum isotropic loss (MIL) and maximum coupling loss (MCL) between the two corresponding to the conversion relationship. In this example, the UE should consider the differences in NF and antenna gain between its MR and LR, determine and calibrate the difference in MCL or MIL between the RSRP received by SS-RSRP on MR and the RSRP received by LP-WUS on LR to obtain the conversion relationship (or correction factor, multiplication factor, etc.).

[0114] As described in the scheme, when the network uses different powers in the SSB sent by the MR and the LP-WUS sent by the LR, the network can indicate the power difference to the UEs in the network through a System Information Broadcast (SIB) message. The message used to indicate the power difference can be the numerical difference between the two, a ratio, or a sequence number that corresponds to the aforementioned two difference relationships.

[0115] In this case, the UE in this example should jointly determine and calibrate the conversion relationship based on the aforementioned differences in its own implementation between MR and LR and the power differences sent by the network through SIB messages.

[0116] At this point, the thresholds (such as Q_entrance and Q_exit) can take the form of the false negative and false positive rates for entry and / or exit, as in the previous example. The UE can then determine these rates by converting or correcting the predicted results and applying a method similar to the previous example to convert the predicted results into the corresponding false negative and false positive rates. The subsequent implementation in this case is similar to that described above and will not be repeated here.

[0117] As described in the scheme, thresholds (such as Q_entrance and Q_exit) can also be in the same form as the measurement results. In this example, the thresholds Q_entrance and Q_exit can be pre-configured RSRP threshold levels or RSRP threshold levels determined by the network via SIB messages. The RSRP threshold level here can be an RSRP value or a number corresponding to an RSRP value.

[0118] At this point, when the UE assesses the channel quality on the LR (i.e., the estimated RSRP of LP-WUS in this example) and it is higher than Q_entrance, the UE can start LP-WUS monitoring. When the UE assesses the channel quality on the LR (i.e., the estimated RSRP of LP-WUS in this example) and it is lower than Q_exit, the UE can stop LP-WUS monitoring.

[0119] The specific values ​​and names appearing in the above examples are for illustrative purposes only and do not impose any restrictions on the implementation of the solution.

[0120] Using the methods described above, the UE can assess the quality of the LP-WUS signal or its channel based on its specific implementation and measurement results, allowing the UE to start or stop LP-WUS monitoring at a more appropriate time. This increases the probability of UEs with various implementations successfully using the LP-WUS design in the network, thereby improving the overall energy efficiency of the network. Simultaneously, by increasing the detection rate of LP-WUS by these different UEs, the overall wake-up success rate for different UEs is shortened, thus reducing the overall network latency.

[0121] LP-WUS monitoring transition to MR receiver interruption time

[0122] In networks supporting LP-WUS, when a UE is in LP-WUS monitoring mode, the time required for different UEs to switch from monitoring LP-WUS on the LR to receiving network information such as paging or physical downlink control channel (PDCCH) on the MR varies depending on the UE's implementation. This paper proposes a method to enhance the UE's switching to receive network messages on the MR after receiving an LP-WUS wake-up signal.

[0123] When the UE is in connected (RRC_CONNECTED), idle (RRC_IDLE), or inactive (RRC_INACTIVE) state and is monitoring LP-WUS, the UE can prepare to receive the second information on the MR downlink channel within the first interruption time after detecting the LP-WUS signal. Optionally, after the UE detects that the LP-WUS signal carries the first information, the UE should prepare to receive the second information on the MR downlink channel within the first interruption time.

[0124] The first piece of information:

[0125] When the UE is in idle or inactive state, the first information can be LP_WUS carrying information instructing the UE to monitor Paging under MR; the first information can also be LP_WUS carrying information instructing the UE to monitor PDCCH under MR.

[0126] When the UE is in connected mode, the first information can be LP_WUS carrying information instructing the UE to monitor the PDCCH under MR.

[0127] The first interrupt time should include at least one of the following: LP-WUS processing time (e.g., T_LP-WUS-Processing); MR wake-up time (e.g., T_MR-wake-up); MR synchronization time (e.g., T_MR-sync).

[0128] The LP-WUS processing time is the time required for the UE to detect and / or process the LP-WUS signal.

[0129] In some embodiments, because the LP-WUS processing time is shorter than the other times mentioned above, it may not be explicitly reflected but may be included in the other times.

[0130] The MR wake-up time is the time required for the UE to perform MR wake-up.

[0131] Optionally, when the UE is in connected state, the MR wake-up time can be determined based on third information.

[0132] The third piece of information should include details about the time required for the UE to perform MR wake-up. This third piece of information can be related to the UE's capabilities; based on the time required for MR wake-up, the UE can report whether it has the capability for fast or slow MR wake-up. "Fast" and "slow" can also be defined by different types of mapping; for example, type 0 has the capability for fast MR wake-up, and type 1 has the capability for slow MR wake-up. The UE reports its capabilities so that the base station can determine the timing for sending paging or PDCCH.

[0133] When the UE reports third information, the MR wake-up time can be determined by mapping information related to the length of time required for the UE to perform MR wake-up, which is included in the third information. For example, when the third information indicates that the time required for the UE to perform MR wake-up is fast, the MR wake-up time can be 400 milliseconds; when the third information indicates that the time required for the UE to perform MR wake-up is slow, the MR wake-up time can be 1 second.

[0134] This third piece of information can be reported through the UE capability information obtained from the response capability query.

[0135] The MR synchronization time is the time the UE uses to complete synchronization on the MR, which can be determined based on the fourth information.

[0136] The fourth information may include at least one of the following or similar information that corresponds to the following: information related to the length of time required for the UE to perform MR synchronization; whether the UE's synchronization information in LR can be used for MR synchronization; whether the UE's MR and LR reuse some radio frequency components (such as local oscillator, antenna, etc.); whether the UE has completed serving cell measurement within the most recent predetermined time (e.g., within X seconds), etc.

[0137] The MR synchronization time can be determined through a mapping relationship with the information included in the fourth information. For example, if the UE reports a long time required for MR synchronization in the fourth information, or the UE's synchronization information in the LR cannot be used for MR synchronization, or the UE's MR and LR do not reuse radio frequency components, or the UE has not completed serving cell measurements within the last X seconds, the MR synchronization time can be, for example, 10 SSB cycles. Conversely, if the UE reports a short time required for MR synchronization in the fourth information, or the UE's synchronization information in the LR can be used for MR synchronization, or the UE's MR and LR reuse radio frequency components, or the UE has completed serving cell measurements within the last X seconds, the MR synchronization time can be, for example, 2 SSB cycles. The specific time values ​​here are for illustrative purposes only.

[0138] The fourth piece of information here, when it includes the UE's capabilities, such as the time required for the UE to perform MR synchronization as mentioned above; whether the UE's synchronization information in LR can be used for MR synchronization; whether the UE's MR and LR reuse some radio frequency components (such as local oscillator, antenna, etc.), can be reported to the network through the UE capability information when the UE is in connected state.

[0139] The fourth piece of information here, when it includes interactions with the network, such as whether the UE has completed serving cell measurements within the last X seconds, can be reported to the network through the aforementioned interactions or determined by the network. In this example, for the network, it's whether it received serving cell measurement reports from the UE within the last X seconds; and for the UE, it's whether it completed and reported the measurement results for the serving cell within the last X seconds.

[0140] The second piece of information can be one of the following:

[0141] When the UE is in an idle or inactive state, the second information can be the paging information within the paging occasion (PO) or the PDCCH.

[0142] When the UE is in connected state, the second information can be PDCCH.

[0143] When the UE is in an idle or inactive state, the following is a possible description of the above scheme:

[0144] After the UE receives an LP-WUS signal in the serving cell via LR or LP-WUR that instructs the UE to wake up the MR to receive paging messages or PDCCH, the UE should be able (or ready) to receive PDCCH messages or paging messages in PO on the MR after detecting the T_interruption of the LP-WUS signal (i.e. the aforementioned first interruption time).

[0145] The interruption time T_interruption is

[0146] T_interruption=T_LP-WUS-Processing+T_MR-wake-up+T_MR-sync

[0147] in,

[0148] T_LP-WUS-Processing is the time required to process information in LP-WUS, such as 10 milliseconds;

[0149] T_MR-wake-up is the time required to wake up the MR and enable it to receive on the serving cell downlink channel, such as 1 second;

[0150] T_MR-sync is the time required to complete synchronization on the MR and serving cell, such as 10 SSB cycles.

[0151] As described in the scheme, T_MR-sync in this example can also be determined based on the fourth information, whether it is in the idle state or the inactive state. If the fourth information is applied, one possible description is as follows:

[0152] T_MR-sync is the time required to complete synchronization with the serving cell on the MR. T_MR-sync is 2 SSB cycles if the UE has completed serving cell measurements within the last X seconds; otherwise, it is 10 SSB cycles.

[0153] When the UE is in connected mode, the following is a possible description of the above scheme:

[0154] After the UE receives an LP-WUS signal in the serving cell via LR or LP-WUR that indicates the UE needs to wake up the MR to receive PDCCH, the UE should be able to (or ready to) receive PDCCH on the MR after detecting the T_interruption of the LP-WUS signal (i.e. the aforementioned first interruption time).

[0155] The interruption time T_interruption is

[0156] T_interruption=T_LP-WUS-Processing+T_MR-wake-up+T_MR-sync

[0157] in,

[0158] T_LP-WUS-Processing is the time required to process information in LP-WUS, such as 10 milliseconds;

[0159] T_MR-wake-up is the time required to wake up the MR and enable it to receive on the serving cell downlink channel, such as 1 second;

[0160] T_MR-sync is the time required to complete synchronization on the MR and serving cell, such as 10 SSB cycles.

[0161] As described in the solution, T_MR-wake-up in this example can also be determined based on third information in the connected state. If the third information is applied, one possible description is:

[0162] T_MR-wake-up is the time required to wake up the MR and enable it to receive on the serving cell downlink channel. Depending on the UE capabilities (i.e., the aforementioned third information, such as MR-wake-up-capability), a possible mapping relationship and values ​​of T_MR-wake-up are shown in Table 3 below;

[0163] Table 3 shows the correspondence between UE capabilities (e.g., MR-wake-up-capability) and T_MR-wake-up.

[0164]

[0165] In addition, the third piece of information can also be the UE type that is mapped to speed. For example, type 0 is a UE with fast wake-up capability (i.e., it only requires a short wake-up time), and type 1 is a UE with slow wake-up capability (i.e., it requires a longer wake-up time). The third piece of information can also be other values, serial numbers, types, capabilities, etc. that correspond to the required time, which will not be listed here.

[0166] As described in the solution, T_MR-sync in this example can also be determined based on the fourth information, whether it is in the idle or inactive state. If the fourth information is applied, one possible approach is as follows:

[0167] T_MR-sync is the time required to complete synchronization with the serving cell on the MR. Depending on whether the UE has completed serving cell measurements in the most recent X seconds and / or depending on the UE's capabilities (e.g., MR-sync-capability), a possible mapping relationship and value of T_MR-sync are shown in Table 4 below;

[0168] Table 4. One mapping method for T MR-wake-up

[0169]

[0170] The method in Table 4 above considers both whether the UE has completed serving cell measurement within the last X seconds and the UE's capabilities (e.g., MR-sync-capability) when determining the value of T_MR-sync. One possible expression for this is:

[0171] T_MR-sync is the time required to complete synchronization with the serving cell on the MR. When the UE has completed serving cell measurements within the last X seconds, T_MR-sync is 2 SSB cycles. When the UE has not completed serving cell measurements within the last X seconds, depending on the UE's capabilities (e.g., MR-sync-capability), T_MR-sync is 2 SSB cycles when the UE's capabilities indicate a shorter (or faster) time required for MR synchronization; and 10 SSB cycles when the UE's capabilities indicate a longer (or slower) time required for MR synchronization.

[0172] In this example, only one of the fourth pieces of information can be applied. For instance, if only the information about whether the UE has completed serving cell measurement within the last X seconds is applied, one possible expression could be:

[0173] T_MR-sync is the time required to complete synchronization with the serving cell on the MR. T_MR-sync is 2 SSB cycles if the UE has completed serving cell measurements within the last X seconds, and 10 SSB cycles otherwise.

[0174] In addition, the fourth piece of information can also be other values, serial numbers, types, abilities, etc. that correspond to the required time length, which will not be listed here.

[0175] The specific values ​​and names appearing in the above examples are for illustrative purposes only and do not impose any restrictions on the implementation of the solution.

[0176] Using the methods described above, different interruption times can be obtained for different UEs and their different states. Based on this interruption time, the network and the UE can anticipate the timing of their downlink communications on MR, such as paging and PDCCH. By using this anticipated interruption time, the network can save resources that would otherwise be used to send corresponding information to the UE before the UE successfully completes its handover from LR to MR, thereby improving the overall resource utilization, communication efficiency, and capacity of the network.

[0177] Optimization of serving cell and neighboring cell measurement behavior by combining LR and MR

[0178] In LP-WUS-enabled networks, the energy efficiency of a UE with LP-WUS support depends on the duration of its LR (Local Level) operation, LP-WUR (Local Level Registry), or LP-WUS monitoring. When a UE needs to measure its serving cell and / or neighboring cells to assess their quality and ensure mobility, striking a balance between energy efficiency and mobility performance is a critical issue. This paper proposes a scheme to enhance the measurement capabilities of LP-WUS-enabled UEs for serving and neighboring cells.

[0179] When the UE is in idle or inactive state, its measurements of the serving cell and / or neighboring cells on MR can be divided into different states (first states) based on different conditions (first conditions), and these measurements can be offloaded to LR / LP-WUR to varying degrees according to the first state. Simultaneously, to ensure energy saving, the measurement cycle can also be relaxed to varying degrees based on the first condition and / or the first state. The first condition and the first state can be implemented independently, i.e., offloading and / or relaxing measurement behavior can be done solely based on the first condition or the first state. The first condition and the first state can also be implemented in combination, i.e., as mentioned above, the first state is determined by the first condition, and then the offloading and / or relaxation method for measurement behavior is determined by the first state.

[0180] The first condition can be determined based on one or more of the following information: whether the LR can perform radio resource management (RRM) measurements on the serving cell; whether the UE's measurement results (RSRP, RSRQ, etc.) on the serving cell in the MR meet the corresponding thresholds; whether the UE's measurement results (RSRP, RSRQ, etc.) on the serving cell in the LR meet the corresponding thresholds; the UE's location information; whether the UE is in a good location (e.g., in the cell center or not at the cell edge); whether the UE is a low mobility type or capability UE; whether the UE is a non-mobile UE type or capability, etc.

[0181] The capability or type information mentioned above, such as whether the LR can perform RRM measurement on the serving cell, whether the UE is a low mobility type or capability UE, and whether the UE is a non-mobile type or capability UE, can be reported by the UE to the network through UE capability information.

[0182] The measurement results in the above information, such as the measurement results of the MR to the serving cell and the measurement results of the UE to the serving cell at the LR, can be reported by the UE to the network through a measurement report.

[0183] The location information and location status mentioned above, such as the UE's location information and whether the UE is in a good location, can be determined by the UE reporting its location information to the network, or by the aforementioned reported measurement results.

[0184] If the first state is determined based on the first information, Table 5 below lists one possible way of classifying the state. Table 5 shows the possible correspondences between the four types of first states and their corresponding first conditions. When different states in Table 5 correspond to multiple first conditions, these conditions can be reflected independently or in combination. As mentioned earlier, the first state can also be classified separately without explicitly reflecting its relationship with the first condition.

[0185] Table 5 shows the correspondence between the first condition and the first state, and their impact on measurement shunting and relaxation methods.

[0186]

[0187]

[0188]

[0189]

[0190]

[0191] Among them, "located in the center of the community" can also be called "not located on the edge of the community", and "not low mobility" can also be called "mobility" or "high mobility", and vice versa. These different expressions that convey the same meaning will not be exhaustively listed.

[0192] The first state, as shown in Table 5 above, is divided into four different states, which can be referred to as State 0, State 1, State 2, and State 3 according to their numbers. The first state can also be described according to its corresponding conditions. For example, if the condition for a certain state is "LR has the capability to offload serving cell measurements and the UE is in the cell center," then this state can also be called "LR has the capability to offload serving cell measurements and the UE is in the cell center state." If the prerequisite is "LR has the capability to offload serving cell measurements," then the state name can be simplified to "UE is in the cell center state." The first state can also be described according to its final determined implementation method. For example, if the determined behavior of a certain state is that measurements of the serving cell and neighboring cells do not need to be performed on the MR, but instead all these measurements are offloaded to the LR, then this state can also be called "all measurements of the serving cell are offloaded to the LR state." Not all possible descriptions are listed here.

[0193] The following is one possible design form of this scheme.

[0194] When the measurement results of the UE on the serving cell in MR, such as SS-RSRP and / or SS-RSRQ, are higher than the threshold Z1, the UE can apply a relaxation factor X1 to the measurement of its serving cell and a relaxation factor Y1 to the measurement of its neighboring cells. These factors act on the measurement cycle of the serving cell through a product, reducing the number of measurements per unit time and relaxing the measurement behavior. The real-world scenario corresponding to the current serving cell measurement result on MR being higher than the threshold Z1 is that the UE needs to maintain measurements of both the serving cell and neighboring cells on MR, but the downlink signal strength of the current cell makes the measurement task impossible to perform accurately on LR, yet sufficient to allow for a small degree of relaxation in the measurement cycle. In this case, the UE can apply smaller relaxation factors X1 and Y1 to the measurements of the serving cell and neighboring cells on MR, while it cannot offload the measurements to LR.

[0195] When the UE's measurement result on MR exceeds threshold Z21 and the UE's measurement result on LR exceeds threshold Z22, the UE can apply a relaxation factor X2 to its measurement of the serving cell on MR and a relaxation factor Y2 to its measurement of neighboring cells on MR. The measurement of the serving cell on MR is then offloaded to LR. These relaxation factors act multiplicatively on the measurement cycle of the serving cell to reduce the number of measurements per unit time, thus relaxing the measurement behavior. The scenario where the current serving cell measurement result on MR exceeds threshold Z21 corresponds to a situation where the UE needs to maintain measurements of both the serving cell and neighboring cells on MR and can afford to relax the measurement cycle significantly. The scenario where the current serving cell measurement result on LR exceeds threshold Z22 corresponds to a situation where the downlink signal strength of the current cell allows for accurate execution of the measurement task on LR. In this case, larger relaxation factors X2 and Y2 can be applied to the UE's measurements of the serving cell and neighboring cells on MR, while the measurement of the serving cell is offloaded to LR. In the current scenario, the two conditions—that the UE's measurement result on MR is higher than threshold Z21 and the UE's measurement result on LR is higher than threshold Z22—can also be used individually. That is, when either of the two conditions, threshold Z21 or Z22, is met, the corresponding reality implicitly supports the meeting of the other condition and its corresponding reality.

[0196] When the UE's measurement result on the LR is higher than the threshold Z3, the UE does not need to perform measurements on the serving cell or neighboring cells on its MR, and its measurements of the serving cell on the MR are offloaded to the LR. The real-world scenario corresponding to the current serving cell's measurement result on the LR being higher than the threshold Z3 is that the downlink signal strength and quality of the current cell are relatively good. In this case, the UE does not need to perform measurements on neighboring cells on the MR, and its measurements of the serving cell can be entirely offloaded to the LR.

[0197] When the UE's measurement result on MR exceeds threshold Z41 and the UE's measurement result on LR exceeds threshold Z42, the UE can apply a relaxation factor X4 to its measurement of the serving cell on MR. Furthermore, the UE does not need to measure neighboring cells on MR, and the measurement of the serving cell on MR will be offloaded to LR. The relaxation factor acts on the measurement cycle of the serving cell through a product to reduce the number of measurements per unit time, thus relaxing the measurement behavior. The real-world scenario corresponding to the current serving cell measurement result on MR exceeding threshold Z41 is that the UE is under good downlink signal conditions and needs to maintain its measurement of the serving cell on MR, but does not need to maintain measurements of neighboring cells. In this case, a greater degree of relaxation can be applied to the measurement of the serving cell. The real-world scenario corresponding to the current serving cell measurement result on LR exceeding threshold Z42 is that the downlink signal strength of the current cell allows the measurement task to be accurately executed on LR, meaning the measurement of the serving cell can be offloaded to LR. At this point, a larger relaxation factor X4 can be applied to the measurement of the serving cell on MR, while the measurement of the serving cell is offloaded to LR. In the current scenario, the two conditions—that the UE's measurement result on MR is higher than threshold Z41 and the UE's measurement result on LR is higher than threshold Z42—can also be used individually. That is, when either threshold Z41 or Z42 is met, the corresponding reality implicitly supports the fulfillment of the other condition and its corresponding reality.

[0198] The above schemes are summarized in Table 6 below.

[0199] Table 6. Schemes for relaxing and offloading MR measurements to LR under different conditions.

[0200]

[0201]

[0202] In this scheme, the relaxation factors X2 / X4 should be greater than X1, and Y2 / Y4 should be greater than Y1. Referring to the cases in Table 6, one possible value for the relaxation factors is shown in Table 7.

[0203] Table 7 shows the values ​​of the relaxation factor for different scenarios.

[0204]

[0205] In the current scheme, when the UE offloads its measurements of the serving cell on the MR to the LR, the difference between the measurement results on the LR and MR can be calculated using the conversion method in the previous scheme. That is, the measurement results on the LR and / or MR are converted based on the UE's self-assessment information on the difference between its LR and MR and / or the auxiliary information sent by the network.

[0206] The relaxation and diversion rules in the current scheme are optional and are also formulated based on the type information reported by the UE.

[0207] When a UE reports that it is a fixed-location or non-moving UE type or capability, it will remain in the current serving cell for an extended period. For such UEs, the measurement of the serving cell on the MR can be significantly relaxed, or it may not be required to perform such measurements on the MR. This relaxation is similar to the situation in scenario 3 above. Alternatively, even more relaxed, the UE's measurement of the current serving cell can be replaced by its behavior of exiting LP-WUS monitoring on the LR according to the previous scheme regarding the LP-WUS signal monitoring behavior. In other words, as long as the UE remains in the state of monitoring LP-WUS, it is not necessary to perform serving cell measurements on the MR and LR.

[0208] Using this scheme in LP-WUS-compliant networks allows UEs to reduce the number of measurements and complete measurement tasks on low-power LR devices, thereby saving power, by offloading their RRM measurement behavior for their serving cell and neighboring cells to LR devices or relaxing the measurement period, based on their own type and / or the network state. Furthermore, classifying and specifying the offloading and relaxation of measurements based on different conditions and / or states ensures that the network and UE maintain a consistent understanding of the implementation of measurement offloading and relaxation, enabling the network to better plan and utilize its resources, improving network resource utilization efficiency and overall capacity.

[0209] Figure 5 A flowchart illustrating a method performed by a base station according to various embodiments of the present disclosure is shown.

[0210] refer to Figure 5 In step S501, a first signal is sent. In step S502, a low-power wake-up signal is sent. Optionally, the start or end of monitoring the low-power wake-up signal is based on the measurement results of the first signal. Optionally, the measurement results include the reference signal received power (RSRP) and the signal-to-interference-plus-noise ratio (SINR).

[0211] Figure 6 A block diagram illustrating the configuration of a user equipment (UE) 600 according to various embodiments of the present disclosure is shown.

[0212] refer to Figure 6The UE 600 according to various embodiments of the present disclosure may include a transceiver 601 and a controller 602. For example, the transceiver 601 may be configured to transmit and receive signals. For example, the controller 602 may be coupled to the transceiver 601 and configured to perform the aforementioned methods.

[0213] Figure 7 A block diagram illustrating the configuration of a base station 700 according to various embodiments of the present disclosure is shown.

[0214] refer to Figure 7 The UE 700 according to various embodiments of the present disclosure may include a transceiver 701 and a controller 702. For example, the transceiver 701 may be configured to transmit and receive signals. For example, the controller 702 may be coupled to the transceiver 701 and configured to perform the aforementioned methods.

[0215] Those skilled in the art will understand that the illustrative embodiments described above are not intended to be limiting. It should be understood that any two or more of the embodiments disclosed herein can be combined in any combination. Furthermore, other embodiments may be utilized and other changes may be made without departing from the spirit and scope of the subject matter presented herein. It will be readily understood that aspects of the invention disclosed herein, as generally described herein and illustrated in the accompanying drawings, can be arranged, substituted, combined, separated, and designed in a variety of different configurations, all of which are contemplated herein.

[0216] Those skilled in the art will understand that the various illustrative logic blocks, modules, circuits, and steps described herein can be implemented in hardware, software, or a combination of both. To clearly illustrate this interchangeability between hardware and software, the various illustrative components, blocks, modules, circuits, and steps are described above in the form of sets of functions. Whether such sets of functions are implemented in hardware or software depends on the specific application and the design constraints imposed on the overall system. Those skilled in the art may implement the described sets of functions in different ways for each specific application, but such design decisions should not be construed as departing from the scope of this application.

[0217] The various illustrative logic blocks, modules, and circuits described in this application may be implemented or performed using a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. The general-purpose processor may be a microprocessor, but in alternatives, the processor may be any conventional processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors cooperating with a DSP core, or any other such configuration.

[0218] The steps of the methods or algorithms described in this application may be embodied directly in hardware, in a software module executed by a processor, or in a combination of both. The software module may reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor so that the processor can read and write information to / from the storage medium. In an alternative, the storage medium may be integrated into the processor. The processor and storage medium may reside in an ASIC. The ASIC may reside in a user terminal. In an alternative, the processor and storage medium may reside as discrete components in the user terminal.

[0219] In one or more exemplary designs, the functionality may be implemented in hardware, software, firmware, or any combination thereof. If implemented in software, the functionality may be stored or transmitted as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media, the latter including any medium that facilitates the transfer of a computer program from one location to another. Storage media may be any available medium that can be accessed by a general-purpose or special-purpose computer.

[0220] The above description is merely an exemplary embodiment of the present invention and is not intended to limit the scope of protection of the present invention, which is determined by the appended claims.

Claims

1. A method performed by a user equipment (UE) in a wireless communication system, comprising: Measure the first signal; as well as Based on the measurement results of the first signal, start or stop low-power wake-up signal monitoring; The measurement results include the reference signal received power (RSRP) and the signal-to-interference-plus-noise ratio (SINR).

2. The method according to claim 1, wherein, The first signal includes at least one of the following: Low-power synchronization signal; Low-power wake-up signal; Synchronization signal block; The main synchronization signal in the synchronization signal block; and The secondary synchronization signal in the synchronization signal block.

3. The method according to claim 1, wherein, The measurement results also include at least one of the following: Reference signal reception quality (RSRQ); Signal-to-noise ratio.

4. The method according to claim 3, wherein, Based on the measurement results, starting or stopping low-power wake-up signal monitoring includes: Based on the measurement results and threshold, start or stop low-power wake-up signal monitoring.

5. The method according to claim 4, wherein, The thresholds include at least one of the following: RSRP threshold, RSRQ threshold, signal-to-interference-plus-noise ratio threshold, signal-to-noise ratio threshold, bit error rate threshold, block error rate threshold, detection rate threshold, and false positive and false negative detection rate thresholds.

6. The method according to claim 1, wherein, Based on the measurement results, starting or stopping low-power wake-up signal monitoring includes: Based on the measurement results of the first signal, information related to the quality of the second signal is determined; and Based on information related to the quality of the second signal, start or stop low-power wake-up signal monitoring.

7. The method according to claim 6, wherein, Information related to the quality of the second signal includes at least one of the following associated with the second signal: RSRP, RSRQ, signal-to-interference-plus-noise ratio, signal-to-noise ratio, bit error rate, block error rate, detection rate, missed detection rate, and false detection rate.

8. The method according to claim 6, wherein, The first signal includes at least one of the following: a synchronization signal block, a primary synchronization signal in the synchronization signal block, and a secondary synchronization signal in the synchronization signal block. The second signal includes at least one of the following: a low-power synchronization signal and a low-power wake-up signal.

9. The method according to claim 6, wherein, Determining information related to the quality of the second signal based on the measurement results includes determining information related to the quality of the second signal based on at least one of the following: The maximum omnidirectional loss difference between the UE's first and second radios; The maximum coupling loss difference between the UE's first and second radios; as well as The power difference between the base station's transmissions on the first and second radios.

10. The method according to claim 1, further comprising: It is capable of receiving on a second radio immediately after detecting a low-power wake-up signal.

11. The method according to claim 10, wherein, Immediately after detecting a low-power wake-up signal, the device is capable of receiving, via a second radio, first information based on the low-power wake-up signal, wherein the first information includes at least one of the following: Instruct the UE to monitor paging information on the second radio; and Instruct the UE to monitor PDCCH information on the second radio.

12. The method according to claim 11, wherein, The first time includes at least one of the following: Processing time for low-power wake-up signals; The wake-up time of the second radio; and The synchronization time of the second radio.

13. The method according to claim 12, wherein, The wake-up time of the second radio is determined based on the UE's ability to perform a second radio wake-up.

14. The method according to claim 12, wherein, The synchronization time of the second radio is determined based on at least one of the following: The UE's ability to perform a second radio synchronization; Whether the synchronization information of the first radio can be used for the synchronization of the second radio; Whether the first radio and the second radio reuse some radio frequency components; Whether the UE completes the measurement of the serving cell within the most recent predetermined time.

15. The method according to claim 1, further comprising: Based on predetermined conditions, at least one of the following is determined: whether to measure the serving cell on the second radio, whether to relax the measurement period of the serving cell on the second radio, a relaxation factor applied to the measurement period of the serving cell on the second radio, whether to measure neighboring cells on the second radio, whether to relax the measurement period of the neighboring cells on the second radio, a relaxation factor applied to the measurement period of the neighboring cells on the second radio, and whether to offload the measurement of the serving cell on the second radio to the first radio, wherein the predetermined conditions are associated with at least one of the following: The UE measures the serving cell's capability on the first radio. The measurement results of the UE on the serving cell on the second radio; The measurement results of the UE on the serving cell on the first radio; The location of the UE; The communication quality of the UE; and The mobility type or capability of the UE.

16. The method of claim 15, further comprising: The state of the UE is determined based on specific conditions; as well as Based on the state of the UE, determine at least one of the following: the measurement of the serving cell on the second radio, the measurement of the neighboring cell on the second radio, and whether to offload the measurement of the serving cell on the second radio to the first radio.

17. The method of claim 15 or 16, further comprising at least one of the following: If the measurement result of the serving cell on the second radio is higher than the first threshold, then at least one of the following is performed: applying a first relaxation factor to the measurement of the serving cell on the second radio, applying a second relaxation factor to the measurement of the neighboring cell on the second radio, and not diverting at least a portion of the measurement of the serving cell on the second radio to the first radio. If the measurement result of the serving cell on the second radio is higher than the second threshold and / or the measurement result on the first radio is higher than the third threshold, then at least one of the following is performed: applying a third relaxation factor to the measurement of the serving cell on the second radio, applying a fourth relaxation factor to the measurement of the neighboring cell on the second radio, and offloading at least a portion of the measurement of the serving cell on the second radio to the first radio. If the measurement result of the serving cell on the first radio is higher than the fourth threshold, then all measurements of the serving cell on the second radio are diverted to the first radio. as well as If the measurement result of the serving cell on the second radio is higher than the fifth threshold and / or the measurement result on the first radio is higher than the sixth threshold, then at least one of the following is performed: applying a fifth relaxation factor to the measurement of the serving cell on the second radio, and offloading at least a portion of the measurement of the serving cell on the second radio to the first radio.

18. The method according to claim 15 or 16, further comprising: When at least a portion of the measurements of the serving cell on the second radio are offloaded to the first radio, the measurements of the serving cell on the first radio are determined based on the measurements of the serving cell on the second radio.

19. The method according to claim 18, wherein, Determining the measurement results of the serving cell on the first radio based on the measurement results of the serving cell on the second radio includes determining the measurement results of the serving cell on the first radio based on at least one of the following: The maximum omnidirectional loss difference between the UE's first and second radios; The maximum coupling loss difference between the UE's first and second radios; as well as The power difference between the base station's transmissions on the first and second radios.

20. A user equipment (UE) in a wireless communication system, comprising: transceiver; as well as A controller, coupled to the transceiver and configured to perform the method according to any one of claims 1-19.

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