A low-power wireless communication method, device, and system

Abstract

This application discloses a low-power wireless communication method, device, and system, comprising: determining auxiliary control information carried in an orthogonal frequency division multiplexing downlink wake-up signal, the information including at least a control information presence indication, a control information format identifier, and a time-frequency location identifier; and determining target control information based on the time-frequency location identifier and the format identifier in response to the presence indication. When used on the network side, the device generates and sends the wake-up signal and the target control information; when used on the terminal side, the device parses the wake-up signal, wakes up the main receiving module based on the presence indication, and receives the target control information in a non-blind decoding manner based on the format identifier and the time-frequency location identifier. This application achieves integrated "wake-up + reception preparation" by carrying precise auxiliary information in the wake-up signal, significantly reducing terminal power consumption and decoding latency, while improving wake-up signal coverage and reception reliability, making it particularly suitable for low-power scenarios such as the Internet of Things.

Description

Technical Field

[0001] This application relates to the field of wireless communication technology, and in particular to a low-power wireless communication method, device and system. Background Technology

[0002] The NR system introduces low-power wake-up technology LP-WUS / WUR for paging and PDCCH monitoring, deployed in parallel with the main receiver module (MR). Its main function is to monitor LP-WUS signals and wake up the main receiver when needed, allowing the MR to maintain a deep sleep state, thereby significantly reducing the overall power consumption of the user equipment (UE). However, LP-WUS suffers from insufficient coverage, especially for OOK (on / off keying) receivers, where the coverage area is limited, allowing the UE to receive signals only in small areas. Another issue is that existing low-power wake-up signal (WUS) schemes (such as NR Rel-18 LP-WUS) can only transmit simple wake-up instructions and cannot provide DCI reception assistance information. After the MR is woken up, full blind decoding is still required, failing to fundamentally reduce decoding power consumption. Therefore, a DCI reception scheme that can adapt to multiple RRC states and balance low power consumption with high-efficiency reception is urgently needed. Summary of the Invention

[0003] This application proposes a low-power wireless communication method, device, and system, which solves the problem of insufficient coverage of existing low-power wake-up technology in existing NR systems, and is particularly suitable for low-power, low-latency scenarios such as IoT sensors and industrial control.

[0004] In a first aspect, this application proposes a low-power wireless communication method, comprising: determining control information auxiliary information, wherein the control information auxiliary information includes at least a control information existence indicator, a control information format identifier, and a time-frequency location identifier; wherein the control information auxiliary information is carried in a downlink wake-up signal based on orthogonal frequency division multiplexing, the control information existence indicator is used to determine whether to trigger the wake-up of the main receiving module, and the control information format identifier is used to determine the decoding method of the target control information; and in response to the control information existence indicator, determining the target control information according to the time-frequency location identifier and the control information format identifier.

[0005] The method described in any embodiment of the first aspect of this application, used in a terminal-side device, includes the following steps: receiving and parsing a downlink wake-up signal based on orthogonal frequency division multiplexing from a network-side device to determine auxiliary control information carried therein: the auxiliary control information includes at least a control information presence indication, a control information format identifier, and a time-frequency location identifier; wherein the control information presence indication is used to determine whether to wake up the main receiving module, and the control information format identifier is used to determine the decoding method of the target control information; in response to the control information presence indication, according to the time-frequency location identifier and the control information format identifier, controlling the woken-up main receiving module to receive and parse the target control information in a non-blind decoding manner.

[0006] The method described in any embodiment of the first aspect of this application, used in a network-side device, includes the following steps: generating control information auxiliary information, wherein the control information auxiliary information includes at least a control information existence indication, a control information format identifier, and a time-frequency location identifier; wherein the control information existence indication is used to indicate whether the terminal side wakes up the main receiving module, and the control information format identifier is used to indicate the format of the target control information; generating and transmitting a downlink wake-up signal based on orthogonal frequency division multiplexing carrying the control information auxiliary information; and, in response to the control information existence indication, generating and transmitting target control information corresponding to the control information format identifier on the time-frequency resource indicated by the time-frequency location identifier.

[0007] In some embodiments of this application, the control information auxiliary information further includes a simplified modulation and coding indication for determining the basic modulation and coding scheme associated with the target control information.

[0008] In some embodiments of this application, the control information auxiliary information further includes connection-state auxiliary information, which includes at least one of the following: physical downlink control channel monitoring skip indication; hybrid automatic repeat request process identifier; and service type indication.

[0009] In some embodiments of this application, the control information auxiliary information further includes a scene indication identifier for determining the control information scene to be processed, wherein the scene includes at least one of the following: paging, system information update, or both paging and system information update.

[0010] In some embodiments of this application, when the control information auxiliary information indicates a system information update or when both paging and system information updates exist simultaneously, the control information auxiliary information further includes a system information block version identifier to determine the system information block to be updated; or, when the control information auxiliary information indicates that both paging and system information updates exist simultaneously, the time-frequency location identifier includes a paging control information location identifier and a system information control information location identifier.

[0011] In some embodiments of this application, the target control information is control information specifically for the idle state of radio resource control, including: paging control information scrambled with a paging radio network temporary identifier and / or system information control information scrambled with a system information radio network temporary identifier.

[0012] In some embodiments of this application, the target control information is control information dedicated to the radio resource control connection state, including at least one of the following: downlink data scheduling control information; uplink grant control information; and physical downlink control channel monitoring configuration update indication.

[0013] In some embodiments of this application, when the control information auxiliary information indicates that paging and system information updates exist simultaneously, the terminal-side device sequentially receives and parses the corresponding paging control information and system information control information based on the paging control information location identifier and the system information control information location identifier.

[0014] In some embodiments of this application, the following steps are also included: if the control information auxiliary information fails to be determined successfully N times in a row, the main receiving module is triggered to periodically wake up according to a preset period; and / or, if the decoding of the control information auxiliary information fails, the main receiving module after being woken up is controlled to perform limited-range blind decoding for a limited number of predefined downlink control information formats.

[0015] Secondly, this application also proposes a network-side device for implementing the method described in any one of the first aspects of this application. At least one module in the network-side device is used to perform at least one of the following functions: generating control information auxiliary information; generating and sending a downlink wake-up signal based on orthogonal frequency division multiplexing carrying the control information auxiliary information; and generating and sending target control information corresponding to the control information format identifier.

[0016] Thirdly, this application also proposes a terminal-side device for implementing the method described in any one of the first aspects of this application. At least one module in the terminal-side device is configured to perform at least one of the following functions: receiving and parsing a downlink wake-up signal based on orthogonal frequency division multiplexing from a network-side device to determine the control information auxiliary information carried therein, including a control information existence indication, a control information format identifier, and a time-frequency position identifier; determining the decoding method of the target control information; and receiving and parsing the target control information in a non-blind decoding manner.

[0017] Fourthly, this application also proposes a low-power wireless communication system, characterized in that it includes: at least one network-side device as described in the second aspect embodiment of this application and / or at least one terminal-side device as described in the third aspect embodiment of this application.

[0018] Fifthly, this application also proposes a computer-readable storage medium having a computer program stored thereon, characterized in that, when the computer program is executed by a processor, it implements the steps of the method described in any one of the embodiments of the first aspect of this application.

[0019] In a sixth aspect, this application also proposes a low-power wireless communication device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that the computer program, when executed by the processor, implements the steps of the method described in any one of the embodiments of the first aspect of this application.

[0020] Compared with existing technologies, the beneficial effects of this invention are as follows: Adaptation to multiple RRC states: Dedicated DCI auxiliary information and complete DCI are designed for core scenarios (paging, system information updates, service scheduling) in IDLE and CONNECTED states, improving the versatility of the solution; Significantly reduced power consumption: By carrying DCI auxiliary information through OFDM-WUS, the "wake-up + reception preparation" integration is achieved, allowing MR to almost remain in sleep mode throughout, and eliminating the need for blind decoding after wake-up, thus reducing the overall power consumption of the UE; Improved coverage and reliability: Leveraging the anti-multipath and anti-interference capabilities of OFDM signals, WUS coverage is comparable to that of the eMBB channel, solving the problem of insufficient coverage in existing LP-WUS; Reduced latency and resource redundancy: Avoiding the latency caused by periodic blind decoding of IDLE state UEs and fixed C-DRX mode of CONNECTED state UEs, improving downlink scheduling response speed, and saving air interface resources. Attached Figure Description

[0021] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a flowchart illustrating an embodiment of the method of this application; Figure 2 This is a flowchart illustrating an embodiment of the method of this application used in a network-side device; Figure 3 This is a flowchart illustrating an embodiment of the method of this application used in a terminal-side device; Figure 4 Flowchart of an embodiment of the two-step DCI reception method applicable to all RRC states; Figure 5 The implementation process for scenarios involving the UE in RRC IDLE state, paging response, and system information update; Figure 6 The implementation process for uplink and downlink service scheduling scenarios where the UE is in RRC CONNECTED state; Figure 7This is the handling process for abnormal scenarios in this embodiment; Figure 8 This is a schematic diagram of an embodiment of a network-side device; Figure 9 This is a schematic diagram of an embodiment of the terminal-side device; Figure 10 This is a schematic diagram of the structure of a network-side device according to another embodiment of the present invention; Figure 11 A block diagram of a terminal-side device according to another embodiment of the present invention. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] The technical solutions provided by the various embodiments of this application are described in detail below with reference to the accompanying drawings.

[0024] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0025] The technical solutions provided by the various embodiments of this application are described in detail below with reference to the accompanying drawings.

[0026] Figure 1 This is a flowchart illustrating an embodiment of the method described in this application. This application proposes a low-power wireless communication method comprising the following steps 110-130.

[0027] Step 110: Determine control information and auxiliary information.

[0028] This invention considers employing a wake-up signal based on orthogonal frequency division multiplexing (OFDM) combined with precise DCI scheduling. Specifically, the auxiliary control information includes: a control information presence indicator, a control information format identifier, and a time-frequency position identifier. This auxiliary control information is carried in a downlink wake-up signal based on OFDM. The control information presence indicator is used to determine whether to trigger the main receiving module wake-up, and the control information format identifier is used to determine the decoding method of the target control information.

[0029] In step 110, this application provides a downlink wake-up signal based on orthogonal frequency division multiplexing (OFDM), wherein the wake-up signal carries control information auxiliary information. From the network side (sender's) perspective, "providing" refers to generating and configuring the signal, carrying (encoding) the necessary control information auxiliary information into the OFDM-WUS signal. From the terminal side (receiver's) perspective, "providing" refers to receiving and acquiring the signal, and parsing the carried control information auxiliary information from the received OFDM-WUS signal.

[0030] For example, the wake-up signal is an OFDM-WUS signal, which has coverage and reliability comparable to the eMBB service channel, thus solving the problem of insufficient coverage of traditional OOK modulation LP-WUS. Consider introducing a low-power OFDM-based WUS for waking up the master receiver. Since LP-WUS only supports 1 bit of wake-up information, the wake-up terminal performs PDCCH detection. If a low-power OFDM WUS is introduced, necessary information can be carried on the OFDM-WUS to assist the terminal in determining whether to wake up the MR. If MR needs to be woken up, the downlink control information carried on the OFDM-WUS assists the terminal in PDCCH detection on the MR. This invention aims to solve the problems of high power consumption, large response delay, and low resource utilization in existing DCI receiving mechanisms under multiple RRC states, and provides a two-step DCI receiving scheme integrating OFDM-WUS to achieve "wake-up + reception preparation" integration, reducing MR wake-up frequency and decoding complexity.

[0031] In a further optimized embodiment of this application, the control information auxiliary information further includes a scene indication identifier for determining the control information scene to be processed. The scene includes at least one of the following: paging, system information update, or both paging and system information update. When the control information auxiliary information indicates a system information update or both paging and system information update exist simultaneously, the control information auxiliary information further includes a system information block version identifier for determining the system information block to be updated; or, when the control information auxiliary information indicates both paging and system information update exist simultaneously, the time-frequency location identifier includes a paging control information location identifier and a system information control information location identifier.

[0032] In specific implementation, when the UE is in RRC IDLE state, the DCI auxiliary information also includes: a scenario indication bit, used to distinguish scenarios such as "paging information exists," "system information update exists," and "paging + system information update"; a simplified modulation and coding indication bit, used to indicate the basic modulation scheme of the second-stage DCI; when the scenario indication is a system update scenario or a simultaneous paging and system update scenario, the DCI auxiliary information also includes a system information version indication bit, used to specify the system information block (SIB) number to be updated; when the scenario indication is a simultaneous paging and system update scenario, the DCI auxiliary information also includes the time-frequency location information corresponding to the paging DCI and the system information DCI, respectively.

[0033] When the UE is in the RRC CONNECTED state, the auxiliary control information further includes: a PDCCH skip indication bit, used to indicate whether the UE performs PDCCH monitoring skip; a HARQ process indication bit, used to specify the HARQ process number corresponding to the DCI to be received; and a service type indication bit, used to distinguish the DCI corresponding to enhanced mobile broadband (eMBB) and high-reliability low-latency communication (URLLC) services. The auxiliary control information also includes connection-state auxiliary information, which includes at least one of the following: a physical downlink control channel monitoring skip indication; a hybrid automatic repeat request process identifier; and a service type indication. The target control information is dedicated to radio resource control in the connection state and includes at least one of the following: downlink data scheduling control information; uplink grant control information; and a physical downlink control channel monitoring configuration update indication.

[0034] Specifically, when the UE is in the RRC CONNECTED state, the complete DCI scheduling information is a CONNECTED state-specific DCI, including at least one of the following: downlink data scheduling DCI, which includes time-frequency resource block (RB) allocation information, modulation and coding scheme (MCS), and HARQ retransmission indication; uplink granting DCI, which includes uplink transmission resource location, MCS level, and uplink HARQ feedback method; and PDCCH monitoring configuration update indication, which is used to adjust the monitoring period and time-frequency resources of subsequent OFDM-WUS.

[0035] Step 120: Establish signal correlation and decision rules.

[0036] Based on the existence indication of the control information, a determination is made as to whether to perform a first type of processing operation. This first type of processing operation is used to determine whether to trigger the wake-up of the main receiving module on the receiving side of the target control information.

[0037] From the network side's perspective, "determination" refers to the internal logic's decision on whether to set the "existence indicator" to "yes" when generating control information and auxiliary information. Its "first type of processing operation" is to prepare and send the complete DCI.

[0038] From the terminal's perspective, "determination" refers to the internal logic's decision on whether to wake up the MR (Mobile Receiver) after parsing the "existence indication." Its "first type of processing operation" is initiating the MR reception process.

[0039] Both parties trigger subsequent processes based on the value of the "existence indication" data field.

[0040] Step 130: Determine the target control information.

[0041] When it is determined that the first type of processing operation is to be performed, a second type of processing operation associated with the target control information is executed according to the time-frequency location identifier and the control information format identifier to determine the target control information. The second type of processing operation includes at least generating and sending the target control information, or receiving and parsing the target control information. For example, controlling the main receiving module to receive and parse the target control information in a non-blind decoding manner.

[0042] It should be noted that, from the network side's perspective, "performing the second type of processing operation" refers to generating and sending complete DCI scheduling information on the resource specified by the "first time-frequency location identifier"; from the terminal side's perspective, "performing the second type of processing operation" refers to locating and receiving the complete DCI scheduling information on the resource specified by the "first time-frequency location identifier".

[0043] Through steps 120-130, in response to the existence indication of the control information, the target control information is determined based on the time-frequency location identifier and the control information format identifier. This constitutes the logical process of "auxiliary information indication - precise positioning and decoding - acquisition of target information".

[0044] The network side performs its "Type I processing operation" (deciding to send DCI and setting instructions) to trigger MR wake-up on the receiving side (terminal), that is, after determining the target control information, it sends it through DCI. The terminal side then performs its "Type I processing operation" (parsing the instructions and deciding to wake up MR), that is, after receiving DCI, it determines the target control information within it.

[0045] It should also be noted that the above steps are used for network entities in wireless communication systems, including terminal-side devices, network-side devices, or other intermediate devices; the above steps can also be used for service devices that provide information processing for the network entity devices; the above steps can also be used for any device, system, subsystem, circuit, chip, or software entity that provides information reception, transmission, identification, and processing for terminal-side devices or network-side devices.

[0046] Figure 2 This is a flowchart illustrating an embodiment of the method of this application used in a network-side device. The method described in any embodiment of the first aspect of this application, used in a network-side device, includes steps 210-240.

[0047] Step 210: Generate control information and auxiliary information.

[0048] The network-side device generates auxiliary control information, which includes at least a control information presence indicator, a control information format identifier, and a time-frequency location identifier. The control information presence indicator is used to indicate whether the terminal should wake up the main receiving module, and the control information format identifier indicates the format of the target control information. This is the first step in the network side proactively providing accurate reception guidance to the terminal side.

[0049] Step 220: Send downlink wake-up signal.

[0050] The network-side device generates and transmits a downlink wake-up signal based on orthogonal frequency division multiplexing, carrying the aforementioned control information and auxiliary information. This OFDM-WUS signal serves as the first step signal and is responsible for transmitting all critical auxiliary information.

[0051] Step 230: Respond and generate target control information.

[0052] In response to the existence indication of the control information (i.e., determining that DCI needs to be sent), the network-side device generates target control information.

[0053] Step 240: Send target control information.

[0054] In response to the existence indication of the control information, further, on the time-frequency resource indicated by the time-frequency location identifier, target control information corresponding to the control information format identifier is generated and transmitted. The network side ensures that the DCI format transmitted on this specified resource is consistent with the previously indicated format, so that the terminal can perform non-blind decoding.

[0055] Figure 3 This is a flowchart illustrating an embodiment of the method of this application used in a terminal-side device. The method described in any embodiment of the first aspect of this application, used in a terminal-side device, includes the following steps 310-340.

[0056] Step 310: Receive and parse the wake-up signal.

[0057] The terminal-side device receives and parses the downlink wake-up signal based on orthogonal frequency division multiplexing from the network-side device to determine the control information auxiliary information carried therein. The control information auxiliary information includes at least a control information presence indicator, a control information format identifier, and a time-frequency location identifier. The UE's low-power wake-up receiver (LP-WUR) continuously monitors the wake-up signal (OFDM-WUS) based on OFDM modulation sent by the base station and parses the DCI auxiliary information carried in the OFDM-WUS.

[0058] If the auxiliary information decoding fails, the main receiving module, after being woken up, will only traverse the commonly used / limited number of predefined downlink control information formats to perform a limited range of blind decoding / limited range recognition process.

[0059] Step 320: Determine the wake-up and decoding method.

[0060] In the parsed information, the control information presence indicator is used to determine whether to wake up the main receiving module, and the control information format identifier is used to determine the decoding method of the target control information. Based on the DCI presence indicator, it is determined whether to wake up the main receiving module (MR). If it is necessary to wake up the MR, the terminal accurately locates the time-frequency resources of the target DCI based on the DCI auxiliary information transmitted by the LP-WUR, and receives and parses the complete DCI scheduling information in a non-blind decoding manner. After the DCI reception is completed, the MR returns to sleep mode, and the LP-WUR continues to monitor the OFDM-WUS.

[0061] Step 330: Respond and control reception.

[0062] In response to the existence indication of the control information (i.e., an indication of existence), the awakened main receiving module is controlled to receive and parse the target control information in a non-blind decoding manner according to the time-frequency location identifier and the control information format identifier. If decoding of the auxiliary information of the control information fails, the awakened main receiving module is controlled to perform limited-range blind decoding for a finite number of predefined downlink control information formats.

[0063] Step 340: Complete the process and restore hibernation and monitoring.

[0064] After the target control information is received and parsed, the main receiving module returns to sleep mode, and the low-power wake-up receiver continues monitoring. If the auxiliary control information fails to be determined successfully N times consecutively, the main receiving module is triggered to periodically wake up according to a preset period.

[0065] When the control information auxiliary information indicates the simultaneous existence of paging and system information updates, the terminal-side device sequentially receives and parses the corresponding paging control information and system information control information based on the paging control information location identifier and the system information control information location identifier. This corresponds to the case where the time-frequency location identifier further includes two identifiers, and the dual time-frequency location information processing flow described in the background art.

[0066] The method further includes the following steps: if the control information auxiliary information fails to be determined successfully N times consecutively, the main receiving module is triggered to periodically wake up according to a preset period; and / or, if the decoding of the control information auxiliary information fails, the main receiving module after being woken up is controlled to perform limited-range blind decoding for a limited number of predefined downlink control information formats.

[0067] In practice, exception handling steps are also included (such as...) Figure 7 If LP-WUR fails to detect OFDM-WUS or fails to resolve it for N consecutive times, MR will be triggered to wake up periodically according to a preset period. If the DCI auxiliary information is decoded incorrectly, after MR wakes up, it will only traverse the commonly used DCI formats to perform blind decoding within a limited range, instead of full blind decoding.

[0068] Figure 4 This is a flowchart illustrating an embodiment of the two-step DCI reception method applicable to all RRC states. The general process is as follows, and its specific execution steps are as follows: Figures 1-3 The general logic described in steps 110 / 210 / 310 to 130 / 240 / 340 of the process concretizes the core logic of "determining auxiliary information - decision-making - accurately determining target information" into a three-stage operation completed collaboratively by the low-power wake-up receiver (LP-WUR) and the main receiver module (MR). This demonstrates how the terminal side and the network side cooperate to achieve low-power, non-blind decoding DCI reception.

[0069] Phase 1: Step 410: The low-power wake-up receiver continuously monitors the downlink wake-up signal (Step 310 / 110). LP-WUR continuously monitors the OFDM-WUS signal sent by the base station according to the preset time and frequency resource configuration.

[0070] Step 420: Parse the wake-up signal and decide whether to wake up the main receiving module based on the existence indication (Step 320 / 120) When an OFDM-WUS signal is detected, the information transmitted by the OFDM-WUS signal is parsed, and a judgment is made in conjunction with the DCI presence indication: if the DCI presence indication is "1" (there is a DCI to be received), a wake-up signal is sent to the MR through the low-power bus, and the parsed DCI auxiliary information is synchronously transmitted to the MR; if the DCI presence indication is "0" (there is no DCI to be received), no wake-up is triggered, the MR remains in sleep mode, and the LP-WUR continues to perform the next round of monitoring.

[0071] Phase Two: Step 430: The main receiving module receives the target control information using a non-blind decoding method based on the auxiliary information (steps 330 / 130 / 240): After being woken up, the MR first receives the DCI auxiliary information transmitted by the LP-WUR. Combined with the RRC state of the terminal, it locates the time slot and RB resource where the target DCI is located based on the time and frequency location information. Combined with the DCI format information, it determines the decoding rules. Without performing full blind decoding, it directly performs non-blind decoding on the target resource block to obtain complete DCI scheduling information.

[0072] Phase Three: Step 440: After receiving the data, the main receiving module goes into sleep mode and wakes up the receiver to resume monitoring (Step 340 / 130). After the MR completes the parsing and processing of the complete DCI scheduling information, it sends a reception completion signal back to the LP-WUR, and then immediately shuts down the core processing circuit and returns to sleep mode. After receiving the feedback, the LP-WUR continues to monitor the OFDM-WUS signal according to the preset cycle.

[0073] Figure 5 When the UE is in RRC IDLE state, the core application scenarios are paging response and system information update. The specific implementation process is as follows: Figure 4 Based on the general process, the scene indication, auxiliary information content and decoding object in the idle state are specified: additional content of "control information auxiliary information" in step 110 / 310 in the idle state (such as scene indication, system information block version identifier, etc.) is added, and the specific form of "target control information" in step 130 / 330 / 240 in the idle state (such as DCI scrambled by P-RNTI or SI-RNTI) and its decoding processing flow are clarified, thus fully presenting the dedicated implementation scheme in the idle state.

[0074] Phase 1: Step 510: In the idle state, parse the auxiliary information containing scene indications and other extended information. (Steps 310-320): In idle state, auxiliary information, including scene indication and other extended information, is parsed. LP-WUR parses DCI auxiliary information in OFDM-WUS, which, in addition to the general DCI presence indication, format information, and time-frequency position information, also includes core scene indication bits, system information version indication bits, and simplified modulation and coding indication bits. A specific scene example is as follows: Example 1 (Paging Scenario): If the core scenario indicator bit is "01" (paging information exists), the system information version indicator bit is invalid (set to 0), and the simplified modulation coding indicator bit is "01" (indicating QPSK modulation), then LP-WUR determines that the current scenario is paging reception, the DCI existence indicator is "1", triggers MR wake-up, and transmits the above auxiliary information to MR.

[0075] Example 2 (System information update scenario): If the core scenario indicator bit is "10" (system information update exists), the system information version indicator bit is "001" (indicating that the system information block to be updated is SIB1), and the simplified modulation coding indicator bit is "10" (indicating 16QAM modulation), then the LP-WUR determines that the current scenario is system information update reception, the DCI existence indicator is "1", triggers MR wake-up, and transmits the parsed auxiliary information to the MR.

[0076] Example 3 (Paging + System Information Update Hybrid Scenario): If the core scenario indicator bit is "11" (Paging + System Information Update), the system information version indicator bit is "010" (indicating that the system information block to be updated is SIB2), and the simplified modulation coding indicator bit is "01" (indicating QPSK modulation), then the LP-WUR determines that the current scenario is hybrid reception, the DCI existence indicator is "1", triggers MR wake-up, and transmits the parsed auxiliary information (including the dual time-frequency position information of paging DCI and system information DCI) to MR.

[0077] Phase Two: Step 520: In idle state, receive and process the corresponding complete downlink control information according to the scenario (steps 330 / 130). The scenarios are divided into the following categories: Example 1 (Paging Scenario): After MR wake-up, the target paging DCI is located based on the time-frequency location information (such as "time slot 10, RB group 3") and DCI format information (DCI Format 1_0) in the auxiliary information. This paging DCI is scrambled by P-RNTI, and the following information is obtained after parsing: the paging record index is "01" (indicating that there is a paging message in the paging group to which the UE belongs), the paging PDSCH resource configuration is "time slot 12, RB group 3-5", the paging message encoding parameters are "MCS 4, HARQ process 0", and the random access pre-configuration indication is "1" (random access needs to be initiated).

[0078] Example 2 (Scenarios with System Information Updates): After MR wake-up, the target system information DCI is located based on the time-frequency location information (e.g., "time slot 15, RB group 6") and DCI format information (DCI Format 1_0) in the auxiliary information. This system information DCI is scrambled with SI-RNTI (System Information Radio Network Temporary Identifier), and after parsing, the following complete DCI scheduling information is obtained: ① SIB identifier is "001" (corresponding to SIB1); ② SI-PDSCH resource configuration is "time slot 17, RB group 6-8" (carrying the time-frequency resources of the updated SIB1); ③ Decoding parameters are "MCS 5, CRC check bit length 24 bits"; ④ System information validity period indication is "11" (indicating that the validity period of this updated SIB1 is 10s).

[0079] Example 3 (Paging + System Information Update Hybrid Scenario): After MR wake-up, based on the dual time-frequency location information in the auxiliary information (such as "Paging DCI: time slot 10, RB group 3; System Information DCI: time slot 15, RB group 6") and the unified DCI format information (DCI Format 1_0), two types of DCI are located and received sequentially: ① First, the paging DCI scrambled by P-RNTI is received, and the parsed information includes "Paging record index is 01 (paging message exists), paging PDSCH resource is time slot 12, RB group 3-5, MCS 4, HARQ process 0, random access pre-configuration indication 1"; ② Then, the system information DCI scrambled by SI-RNTI is received, and the parsed information includes "SIB identifier is 010 (corresponding to SIB2), SI-PDSCH resource is time slot 17, RB group 6-8, MCS 5, CRC check bit length 24 bits, system information validity period indication 10 (validity period 5s)".

[0080] After receiving the paging message based on the above information, the MR triggers a random access procedure. Upon completion of the procedure, the MR returns to sleep mode, and the LP-WUR continues monitoring OFDM-WUS. Based on the configuration of the system information DCI, the MR receives and parses the SIB1 update content. After completing system information synchronization, it sends a synchronization completion signal back to the base station. The MR then returns to sleep mode, and the LP-WUR continues monitoring OFDM-WUS. After receiving and parsing both types of DCI, the MR first triggers a random access procedure based on the paging DCI. After the random access is completed, it receives and parses the SIB2 update content. After all procedures are completed, the MR returns to sleep mode, and the LP-WUR continues monitoring OFDM-WUS.

[0081] Figure 6 When the UE is in RRC CONNECTED state, the core application scenario is uplink and downlink service scheduling. The specific implementation process is as follows: Figure 4Based on the general process, the auxiliary information and service scheduling scenarios in the connected state are specified, including the additional content of "control information auxiliary information" in step 110 / 310 in the connected state (such as PDCCH skip indication, HARQ process identifier, etc.), and the specific form of "target control information" in step 130 / 330 / 240 in the connected state (such as uplink authorization DCI, downlink scheduling DCI, etc.), thus fully presenting the dedicated implementation plan in the connected state.

[0082] Phase 1: Step 610: In connected state, parse auxiliary information containing extended information such as service type (steps 310-320). LP-WUR parses the DCI auxiliary information in OFDM-WUS, which, in addition to general information, includes: PDCCH skip indicator, HARQ process indicator, and service type indicator. An example is shown below: If the PDCCH skip indicator is "0" (no skipping), the HARQ process indicator is "011" (HARQ process 3), the service type indicator is "10" (URLLC service), and the DCI existence indicator is "1", then LP-WUR triggers MR wake-up and transmits auxiliary information to MR.

[0083] Phase Two: Step 620: Receive and parse target control information related to service scheduling in the connected state (Step 330) After MR wake-up, the target DCI (URLLC service dedicated DCI, format DCI Format 0_1) is located based on auxiliary information. This DCI is an uplink authorized DCI. After parsing, the following can be obtained: uplink transmission resource location is "time slot 15, RB group 6-8", MCS level is "6" and uplink HARQ feedback mode is "adaptive feedback".

[0084] Phase Three: Step 630: Complete service scheduling information processing in connected state (Step 340) After the MR completes the parsing and processing of the complete DCI scheduling information, it sends a reception completion signal back to the LP-WUR, and then immediately shuts down the core processing circuit and returns to sleep mode. After receiving the feedback, the LP-WUR continues to monitor the OFDM-WUS signal according to the preset cycle.

[0085] The control information auxiliary information also includes a simplified modulation and coding indication, used to determine the basic modulation and coding scheme associated with the target control information. For example, the simplified modulation and coding indication bit is used to indicate the basic modulation scheme of the second-stage DCI. On the terminal side, this indication can be used to pre-configure demodulator parameters.

[0086] Figure 7 This embodiment outlines the handling process for abnormal scenarios. The process defines a backup wake-up and decoding strategy from LP-WUR to MR for two typical abnormal situations: "continuous failure to obtain auxiliary information" and "error in decoding auxiliary information," ensuring the robustness of the system under non-ideal channel conditions.

[0087] Figures 1-4 This demonstrates the core process of achieving low-power, non-blind decoding DCI reception based on auxiliary information carried by OFDM-WUS under ideal or normal channel conditions. This is the main working path of the system design. Figure 7 This process defines the backup or recovery mechanism that the system adopts when the preconditions of the main process cannot be met (i.e., the LP-WUR fails to acquire or correctly parse OFDM-WUS / auxiliary information continuously). It ensures that in the event of a failure of the main process, the system can still maintain basic communication capabilities through a degraded but fully functional mode (periodic wake-up + limited blind decoding), and switch back to the main process after the conditions are restored.

[0088] The steps for abnormal scenarios in this embodiment are as follows: Step 700A, Scenario 1: OFDM-WUS reception failure. For example, if the LP-WUR fails to detect the OFDM-WUS signal three consecutive times, or if the CRC check fails after parsing, the exception handling module triggers a redundancy mechanism, controlling the MR to periodically wake up at 500ms intervals. After each wake-up, a limited range of blind decoding is performed (only traversing DCI Format 1_0 and 0_0), lasting for three cycles. If no valid DCI is received within three cycles, the LP-WUR monitoring mode is restored.

[0089] Step 700B, Scenario 2: DCI auxiliary information decoding error. If the DCI auxiliary information parsed by LP-WUR has a format error (such as time-frequency position information exceeding a reasonable range), a "decoding error" flag is sent to MR. After MR is woken up, it only traverses the commonly used DCI formats (traversing Format 1_0 in IDLE state, and traversing Format 1_0 and 0_1 in CONNECTED state) to perform limited-range blind decoding, avoiding the high power consumption of full-quantity blind decoding.

[0090] Figure 8 This is a schematic diagram of a network-side device embodiment. This application also proposes a network-side device for implementing the method of any embodiment of this application, wherein the network-side device is used to execute this application. Figure 2 The functions and steps shown in the embodiments.

[0091] Specifically, a network-side device is used to implement the method described in any embodiment of this application, characterized in that at least one module in the network-side device is used to implement at least one of the following functions: generating control information auxiliary information; generating and sending a downlink wake-up signal based on orthogonal frequency division multiplexing carrying the control information auxiliary information; and generating and sending target control information corresponding to the control information format identifier.

[0092] To implement the above technical solution, this application proposes a network-side device 800, which includes a network transmitting module 801, a network determining module 802, and a network receiving module 803 that are interconnected.

[0093] The network transmission module is used to send configuration parameters to the terminal, send a downlink wake-up signal based on orthogonal frequency division multiplexing carrying the control information auxiliary information, and send target control information corresponding to the control information format identifier.

[0094] The network determination module is used to determine control information auxiliary information and target control information.

[0095] The network receiving module is used to receive and parse the confirmation information sent by the terminal and to receive uplink data signals.

[0096] The specific methods for implementing the functions of the network sending module, network determining module, and network receiving module are as described in the various method embodiments of this application, and will not be repeated here.

[0097] The network-side equipment described in this application may refer to base station facilities, network-side equipment or servers connected to base stations, systems that provide services for the aforementioned equipment, or any system, subsystem, module, circuit, chip or software operating device that provides information reception, transmission, identification and processing for the aforementioned equipment.

[0098] Figure 9 This is a schematic diagram of an embodiment of a terminal-side device. This application also proposes a terminal-side device for implementing the method of any embodiment of this application, wherein the terminal-side device is used to execute this application. Figure 3 The functions and steps shown in the embodiments.

[0099] Specifically, a terminal-side device is used to implement the method described in any embodiment of this application. At least one module in the terminal-side device is used to implement at least one of the following functions: receiving and parsing a downlink wake-up signal based on orthogonal frequency division multiplexing from a network-side device to determine the control information auxiliary information carried therein, including a control information existence indication, a control information format identifier, and a time-frequency position identifier; determining the decoding method of the target control information; and receiving and parsing the target control information in a non-blind decoding manner.

[0100] To implement the above technical solution, this application proposes a terminal-side device 900, which includes a terminal transmitting module 901, a terminal determining module 902, and a terminal receiving module 903 that are interconnected.

[0101] The terminal receiving module is used to receive configuration parameters from the network side, a downlink wake-up signal based on orthogonal frequency division multiplexing carrying the control information auxiliary information, and target control information corresponding to the control information format identifier.

[0102] The terminal determination module is used to determine the auxiliary control information carried therein, including control information existence indication, control information format identifier, and time-frequency location identifier; determine the decoding method of the target control information; and determine the target control information.

[0103] The terminal sending module is used to send confirmation information and uplink data signals.

[0104] The specific methods for implementing the functions of the terminal sending module, the terminal determining module, and the terminal receiving module are as described in the various method embodiments of this application, and will not be repeated here.

[0105] The terminal-side equipment described in this application may refer to user equipment (UE), personal mobile terminal, smart terminal, mobile phone, computer with communication function, system that provides services for the above-mentioned equipment, or any system, subsystem, module, circuit, chip or software running device that provides information reception, transmission, identification and processing for the above-mentioned equipment.

[0106] Figure 10 A schematic diagram of a network-side device according to another embodiment of the present invention is shown. As shown, the network-side device A00 includes a processor A01, a wireless interface A02, and a memory A03. The wireless interface may consist of multiple components, including a transmitter and a receiver, providing a unit for communication with various other devices over a transmission medium. The wireless interface implements communication functions with the terminal-side device, processes wireless signals through receiving and transmitting devices, and the data carried by the signals is communicated with the memory or processor via an internal bus structure. The memory A03 contains a computer program that executes any embodiment of the present application, and the computer program runs or is modified on the processor A01. For example, the program running on the processor A01 may be configured to execute steps 210 to 240. When the memory, processor, and wireless interface circuit are connected through a bus system, the bus system includes a data bus, a power bus, a control bus, and a status signal bus, which will not be described in detail here. When the computer program is executed by the processor, it can be used to implement the method described in any embodiment of the first aspect of the present application applicable to network devices.

[0107] Figure 11 This is a block diagram of a terminal-side device according to another embodiment of the present invention. The terminal-side device B00 includes at least one processor B01, a memory B02, a user interface B03, and at least one network interface B04. The various components in the terminal-side device B00 are coupled together via a bus system.

[0108] The bus system is used to enable communication and connection between these components. The bus system includes a data bus, a power bus, a control bus, and a status signal bus. The user interface B03 may include a display, keyboard, or clicking device, such as a mouse, trackball, touchpad, or touchscreen.

[0109] The memory B02 stores executable modules or data structures. The memory can store an operating system and application programs. The operating system includes various system programs, such as a framework layer, core library layer, and driver layer, used to implement various basic business functions and handle hardware-based tasks. The application programs include various applications, such as media players and browsers, used to implement various application services. When executed by a processor, the computer program can be used to implement the method described in any of the embodiments of the first aspect of this application applicable to terminal devices.

[0110] In this embodiment of the invention, the memory B02 contains a computer program that executes any embodiment of the present application, and the computer program runs on or modifies the processor B01. For example, the program running on the processor B01 can be configured to execute steps 310 to 340. The memory B02 contains a computer-readable storage medium, and the processor B01 reads information from the memory B02 and, in conjunction with its hardware, completes the steps of the above-described method. Specifically, the computer-readable storage medium stores a computer program, which, when executed by the processor B01, implements the steps of the method embodiments described in any of the above-described embodiments. The processor B01 may be an integrated circuit chip with signal processing capabilities. In implementation, each step of the method of this application can be completed by integrated logic circuits in the hardware of the processor B01 or by instructions in software form. The processor B01 may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, an off-the-shelf programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component. It can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of the present invention. The general-purpose processor may be a microprocessor or any conventional processor, etc. The steps of the method disclosed in the embodiments of the present invention can be directly reflected as being executed by a hardware decoding processor, or being executed by a combination of hardware and software modules in the decoding processor.

[0111] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects.

[0112] In a typical configuration, the device of this application includes one or more processors (CPUs), an input / output user interface, a network interface, and memory. Furthermore, the invention can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code. Therefore, this application also proposes a computer-readable medium storing a computer program that, when executed by a processor, implements the steps of the methods described in any embodiment of this application. For example, the memory A03, B02 of the present invention may include non-permanent memory in the form of computer-readable media, random access memory (RAM), and / or non-volatile memory, such as read-only memory (ROM) or flash RAM.

[0113] Based on the embodiments of the apparatus described in this application, this application also proposes a mobile communication system, including at least one embodiment of any terminal-side device described in this application and / or at least one embodiment of any network-side device described in this application. Specifically, a low-power wireless communication system is characterized by comprising: at least one network-side device as described in the embodiments of this application and / or at least one terminal-side device as described in the embodiments of this application.

[0114] It should be noted that the specific mobile communication technology described in this invention is not limited, and can be WCDMA, CDMA2000, TD-SCDMA, WiMAX, LTE / LTE-A, LAA, MuLTEfire, and subsequent fifth-generation, sixth-generation, and Nth-generation mobile communication technologies.

[0115] The terminal described in this invention refers to a terminal-side product that supports the communication protocols of terrestrial mobile communication systems, specifically a wireless modem module that can be integrated into various terminal forms such as mobile phones, tablets, and data cards to complete communication functions. For ease of description, a fifth-generation mobile communication system is used as an example, where the mobile communication terminal can be represented as UE (User Equipment), and the network-side access device can be represented as a base station or access point.

[0116] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element. Those skilled in the art will understand that, unless specifically stated otherwise, the singular forms "a," "an," "the," and "the" used may also include the plural forms. It should be understood that when a device or component is "connected" to another device or component, it may be directly connected to the other device or component, or there may be intermediate devices or components. Furthermore, the term "connection" as used herein may include partially wireless connections and partially wired connections. In the description of this application, it should be understood that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Those skilled in the art will understand the specific meaning of the above terms in this application based on the specific circumstances. Furthermore, in the description of this application, unless otherwise stated, "multiple" means two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0117] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A low-power wireless communication method, characterized in that, include: Determine a control information auxiliary information, which includes at least a control information existence indicator, a control information format identifier, and a time-frequency location identifier; The control information auxiliary information is carried in a downlink wake-up signal based on orthogonal frequency division multiplexing; the control information existence indicator is used to determine whether to trigger the wake-up of the main receiving module; and the control information format identifier is used to determine the decoding method of the target control information. In response to the existence indication of the control information, the target control information is determined based on the time-frequency location identifier and the control information format identifier.

2. A low-power wireless communication method for network-side devices, characterized in that, Includes the following steps: Generate auxiliary control information, which includes at least a control information presence indicator, a control information format identifier, and a time-frequency location identifier; wherein, the control information presence indicator is used to indicate whether the terminal side should wake up the main receiving module, and the control information format identifier is used to indicate the format of the target control information; Generate and transmit a downlink wake-up signal based on orthogonal frequency division multiplexing that carries the control information and auxiliary information; In response to the existence indication of the control information, target control information corresponding to the control information format identifier is generated and sent on the time-frequency resource indicated by the time-frequency location identifier.

3. A low-power wireless communication method for a terminal-side device, characterized in that, Includes the following steps: The system receives and parses downlink wake-up signals based on orthogonal frequency division multiplexing from network-side devices to determine the auxiliary control information carried therein; the auxiliary control information includes at least a control information existence indicator, a control information format identifier, and a time-frequency position identifier. The existence indication of the control information is used to determine whether to wake up the main receiving module, and the format identifier of the control information is used to determine the decoding method of the target control information. In response to the existence indication of the control information, the main receiving module that has been awakened is controlled to receive and parse the target control information in a non-blind decoding manner according to the time-frequency position identifier and the control information format identifier.

4. The method according to claim 3, characterized in that, When the control information auxiliary information indicates that both paging and system information updates exist simultaneously, the terminal device sequentially receives and parses the corresponding paging control information and system information control information based on the paging control information location identifier and the system information control information location identifier.

5. The method according to claim 3, characterized in that, It also includes the following steps: If the control information auxiliary information fails to be determined successfully N times consecutively, the main receiving module is triggered to periodically wake up according to a preset period; and / or, if the decoding of the control information auxiliary information fails, the main receiving module after being woken up is controlled to perform limited-range blind decoding for a limited number of predefined downlink control information formats.

6. The method according to any one of claims 1 to 5, characterized in that, The control information auxiliary information also includes a simplified modulation and coding instruction, used to determine the basic modulation and coding scheme associated with the target control information.

7. The method according to any one of claims 1 to 5, characterized in that, The control information auxiliary information also includes connection-state auxiliary information, which includes at least one of the following: physical downlink control channel monitoring skip indication; hybrid automatic repeat request process identifier; service type indication.

8. The method according to any one of claims 1 to 5, characterized in that, The control information auxiliary information also includes a scene indication identifier, used to determine the control information scene to be processed. The scene includes at least one of the following: paging, system information update, or both paging and system information update.

9. The method according to any one of claims 1 to 5, characterized in that, When the control information auxiliary information indicates that system information is updated or that paging and system information updates exist simultaneously, the control information auxiliary information also includes a system information block version identifier to determine the system information block to be updated; or, when the control information auxiliary information indicates that paging and system information updates exist simultaneously, the time-frequency location identifier includes a paging control information location identifier and a system information control information location identifier.

10. The method according to any one of claims 1 to 5, characterized in that, The target control information is control information specifically used for radio resource control in the idle state, including: paging control information scrambled with a paging radio network temporary identifier and / or system information control information scrambled with a system information radio network temporary identifier.

11. The method according to any one of claims 1 to 5, characterized in that, The target control information is control information specifically used for the radio resource control connection state, including at least one of the following: downlink data scheduling control information; uplink grant control information; and physical downlink control channel monitoring configuration update indication.

12. A network-side device for implementing the method according to any one of claims 1 to 11, characterized in that, At least one module in the network-side device is configured to perform at least one of the following functions: generating control information auxiliary information; generating and sending a downlink wake-up signal based on orthogonal frequency division multiplexing carrying the control information auxiliary information; and generating and sending target control information corresponding to the control information format identifier.

13. A terminal-side device, characterized in that, To implement the method according to any one of claims 1 to 11, the terminal-side device is characterized in that at least one module is used to implement at least one of the following functions: receiving and parsing a downlink wake-up signal based on orthogonal frequency division multiplexing from a network-side device to determine the control information auxiliary information carried therein, including a control information existence indication, a control information format identifier, and a time-frequency position identifier; determining the decoding method of the target control information; and receiving and parsing the target control information in a non-blind decoding manner.

14. A low-power wireless communication system, characterized in that, include: At least one network-side device as described in claim 12 and / or at least one terminal-side device as described in claim 13.

15. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the method as described in any one of claims 1 to 11.

16. A low-power wireless communication device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the computer program is executed by the processor, it implements the method as described in any one of claims 1 to 11.

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