Low-power consumption implementation method, device and computer equipment of wireless ad hoc network equipment

Abstract

This application relates to a low-power implementation method, apparatus, and computer device for a wireless ad hoc network device. The method includes: centrally configuring the physical downlink control channel search spaces corresponding to multiple consecutive subframes within the first few symbols of a first subframe, with each subframe's physical downlink control channel search space corresponding to one of the first few symbols of the first subframe; centrally detecting the physical downlink control channel search spaces corresponding to each subframe within the first few symbols of the first subframe; if physical downlink control channel scheduling signaling of the local node is detected in the physical downlink control channel search space corresponding to a target subframe, opening the receiving link in the target subframe to receive physical downlink shared channel data; otherwise, closing the receiving link in the target subframe. This method can reduce the device's invalid wake-up time, blind detection overhead, and redundant transmission power consumption, resulting in a significant reduction in overall power consumption.

Description

Technical Field

[0001] This application relates to the field of wireless ad hoc network technology, and in particular to a low-power implementation method, apparatus, computer device, computer-readable storage medium, and computer program product for a wireless ad hoc network device. Background Technology

[0002] With the evolution of wireless communication technology, wireless mesh devices based on the fifth-generation New Radio (NR) have broad application prospects in fields such as emergency communication and the Industrial Internet of Things (IIoT) due to their advantages of high bandwidth, low latency, and flexible deployment. These devices form multi-hop networks through node self-organization, which places stringent requirements on power consumption control.

[0003] In traditional NR cellular systems, user equipment (UEs) must blindly detect scheduling information within the Physical Downlink Control Channel (PDCCH) search space. In existing NR standards, the PDCCH search space is typically distributed across the first few symbols of a timeslot and supports multiple control channel element aggregation levels, as well as complex partitioning of the common search space and user-specific search space. This design aims to meet the diverse scheduling needs of cellular networks.

[0004] However, when NR technology is directly applied to wireless ad hoc network devices, the aforementioned mechanisms lead to significant power consumption issues. On one hand, the dispersed PDCCH search space requires the receiver link to be woken up for extended periods to detect scheduling signaling, resulting in redundant and ineffective wake-up times and blind detection overhead. On the other hand, to maintain the multi-hop network topology, nodes need to periodically send synchronization signal blocks and various network maintenance messages. In existing mechanisms, the message sending strategies for these messages are relatively fixed and frequent, further exacerbating RF transmission power consumption. Therefore, existing NR-based wireless ad hoc network devices have shortcomings in receiver link wake-up mechanisms, control information blind detection complexity, and network maintenance message sending strategies, leading to overall high power consumption and limiting their application in power-sensitive scenarios.

[0005] Therefore, there is an urgent need for a low-power implementation method, device, computer equipment, computer-readable storage medium, and computer program product for wireless ad hoc network devices, which can reduce the invalid wake-up time, blind detection overhead, and redundant transmission power consumption, thereby achieving a significant reduction in overall power consumption. Summary of the Invention

[0006] Based on this, it is necessary to provide a low-power implementation method, apparatus, computer equipment, computer-readable storage medium, and computer program product for wireless ad hoc network devices that can reduce the invalid wake-up time, blind detection overhead, and redundant transmission power consumption, thereby significantly reducing overall power consumption, in response to the above-mentioned technical problems.

[0007] In a first aspect, this application provides a low-power implementation method for a wireless ad hoc network device, applied to a wireless ad hoc network device server, the method comprising:

[0008] The physical downlink control channel search space corresponding to each of the consecutive subframes is centrally configured within the first few symbols of the first subframe, and the physical downlink control channel search space corresponding to each of the consecutive subframes corresponds one-to-one with the first few symbols of the first subframe.

[0009] Within the first few symbols of the first subframe, the physical downlink control channel search space corresponding to each subframe is detected in a concentrated manner.

[0010] If the physical downlink control channel scheduling signaling of this node is detected in the physical downlink control channel search space corresponding to the target subframe, the receiving link is opened in the target subframe to receive physical downlink shared channel data.

[0011] If no physical downlink control channel scheduling signaling is detected in the physical downlink control channel search space corresponding to the target subframe, the receiving link is shut down in the target subframe.

[0012] In one embodiment, the step of centrally configuring the physical downlink control channel search spaces corresponding to each of the consecutive subframes within the first multiple symbols of the first subframe, and ensuring that the physical downlink control channel search spaces corresponding to each of the consecutive subframes correspond one-to-one with the first multiple symbols of the first subframe, includes:

[0013] The physical downlink control channel search space corresponding to the first subframe in the series of consecutive subframes is mapped to the first symbol in the first set of symbols of the first subframe; until the physical downlink control channel search space corresponding to the last subframe in the series of consecutive subframes is mapped to the last symbol in the first set of symbols of the first subframe.

[0014] In one embodiment, the method further includes:

[0015] The primary synchronization sequence and the secondary synchronization sequence are respectively configured on the preset symbols of the first subframe to achieve clock synchronization between wireless ad hoc network devices.

[0016] In one embodiment, the method further includes:

[0017] The distinction between public search space and user-specific search space has been removed; only public search space is configured.

[0018] Based on the size of the carrier physical resource block configuration, the number of types of control channel unit aggregation levels is limited;

[0019] Limit the number of physical downlink control channels scheduled within a single time slot.

[0020] In one embodiment, the method further includes:

[0021] A mechanism for periodically sending synchronization signal blocks is adopted, and the sending frequency of synchronization signal blocks is dynamically adjusted based on the node's movement rate;

[0022] The first node to access the network is set as the initial logical center node, which is responsible for network routing topology maintenance, air interface resource allocation and scheduling, and access control.

[0023] If the initial logical center node goes offline, the remaining nodes in the network will automatically trigger the election process for a new logical center node.

[0024] In one embodiment, network management messages during network routing topology maintenance are transmitted in unicast mode, and the message sending period is adjusted according to the network operation scenario.

[0025] Secondly, this application also provides a low-power implementation device for a wireless ad hoc network device, comprising:

[0026] The search space configuration module is used to centrally configure the physical downlink control channel search space corresponding to each of multiple consecutive subframes within the first multiple symbols of the first subframe, and the physical downlink control channel search space corresponding to each of multiple consecutive subframes corresponds one-to-one with the first multiple symbols of the first subframe.

[0027] The detection module is used to centrally detect the physical downlink control channel search space corresponding to each subframe within the first multiple symbols of the first subframe;

[0028] The link control module is used to open the receiving link in the target subframe to receive physical downlink shared channel data when the physical downlink control channel scheduling signaling of the local node is detected in the physical downlink control channel search space corresponding to the target subframe.

[0029] The link control module is also used to close the receiving link in the target subframe if no physical downlink control channel scheduling signaling of the local node is detected in the physical downlink control channel search space corresponding to the target subframe.

[0030] Thirdly, this application also provides a computer device, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to perform the following steps:

[0031] The physical downlink control channel search space corresponding to each of the consecutive subframes is centrally configured within the first few symbols of the first subframe, and the physical downlink control channel search space corresponding to each of the consecutive subframes corresponds one-to-one with the first few symbols of the first subframe.

[0032] Within the first few symbols of the first subframe, the physical downlink control channel search space corresponding to each subframe is detected in a concentrated manner.

[0033] If the physical downlink control channel scheduling signaling of this node is detected in the physical downlink control channel search space corresponding to the target subframe, the receiving link is opened in the target subframe to receive physical downlink shared channel data.

[0034] If no physical downlink control channel scheduling signaling is detected in the physical downlink control channel search space corresponding to the target subframe, the receiving link is shut down in the target subframe.

[0035] Fourthly, this application also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, performs the following steps:

[0036] The physical downlink control channel search space corresponding to each of the consecutive subframes is centrally configured within the first few symbols of the first subframe, and the physical downlink control channel search space corresponding to each of the consecutive subframes corresponds one-to-one with the first few symbols of the first subframe.

[0037] Within the first few symbols of the first subframe, the physical downlink control channel search space corresponding to each subframe is detected in a concentrated manner.

[0038] If the physical downlink control channel scheduling signaling of this node is detected in the physical downlink control channel search space corresponding to the target subframe, the receiving link is opened in the target subframe to receive physical downlink shared channel data.

[0039] If no physical downlink control channel scheduling signaling is detected in the physical downlink control channel search space corresponding to the target subframe, the receiving link is shut down in the target subframe.

[0040] Fifthly, this application also provides a computer program product, including a computer program that, when executed by a processor, performs the following steps:

[0041] The physical downlink control channel search space corresponding to each of the consecutive subframes is centrally configured within the first few symbols of the first subframe, and the physical downlink control channel search space corresponding to each of the consecutive subframes corresponds one-to-one with the first few symbols of the first subframe.

[0042] Within the first few symbols of the first subframe, the physical downlink control channel search space corresponding to each subframe is detected in a concentrated manner.

[0043] If the physical downlink control channel scheduling signaling of this node is detected in the physical downlink control channel search space corresponding to the target subframe, the receiving link is opened in the target subframe to receive physical downlink shared channel data.

[0044] If no physical downlink control channel scheduling signaling is detected in the physical downlink control channel search space corresponding to the target subframe, the receiving link is shut down in the target subframe.

[0045] The aforementioned low-power implementation method, apparatus, computer device, computer-readable storage medium, and computer program product for wireless ad hoc network devices centrally configure the physical downlink control channel search spaces corresponding to multiple consecutive subframes within the first few symbols of the first subframe, establishing a one-to-one correspondence. This allows the wireless ad hoc network device to obtain scheduling information for subsequent subframes by performing a single centralized detection within the first few symbols of the first subframe. Based on this, the device activates or deactivates the receiving link as needed according to the detection results, waking up the receiving circuit only in target subframes where local node scheduling signaling exists; otherwise, it remains deactivated. Compared to traditional technologies where the receiving link needs to be woken up and its PDCCH search space dispersed for each subframe, this application transforms dispersed detection into centralized detection and long-term wake-up into on-demand wake-up, thereby significantly shortening the invalid wake-up time of the receiving link, reducing the number of blind PDCCH detections, lowering the signal processing overhead of the receiving link, and significantly optimizing the power consumption performance of the wireless ad hoc network device. Attached Figure Description

[0046] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the drawings used in the description of the embodiments of this application or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0047] Figure 1 This is a flowchart illustrating a low-power implementation method for a wireless ad hoc network device in one embodiment.

[0048] Figure 2 This is a schematic diagram of one embodiment where each radio frame is divided into 5 radio subframes;

[0049] Figure 3 This is a schematic diagram of one embodiment where each wireless subframe contains 14 symbols;

[0050] Figure 4This is a structural block diagram of a low-power implementation device for a wireless ad hoc network device in one embodiment.

[0051] Figure 5 This is an internal structural diagram of a computer device in one embodiment. Detailed Implementation

[0052] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0053] It should be noted that the terms "first," "second," etc., used in this application can be used to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish the first element from the second element. The terms "comprising" and "having," and any variations thereof, used in this application, are intended to cover non-exclusive inclusion. The term "multiple" used in this application refers to two or more. The term "and / or" used in this application refers to one of the embodiments, or any combination of multiple embodiments.

[0054] In one exemplary embodiment, such as Figure 1 As shown, a low-power implementation method for a wireless ad hoc network device is provided, which can be applied to... Figure 1 Taking server 104 as an example, the explanation includes the following steps S102 to S106. Wherein:

[0055] Step S102: The physical downlink control channel search spaces corresponding to each of the consecutive subframes are centrally configured within the first few symbols of the first subframe, and the physical downlink control channel search spaces corresponding to each of the consecutive subframes correspond one-to-one with the first few symbols of the first subframe.

[0056] Specifically, the network side or the logical central node in the network centralizes the physical downlink control channel search space, which was originally scattered across multiple consecutive subframes in the time domain, within the first few symbols of the first subframe, and establishes a one-to-one mapping between these search spaces and the first few symbols of the first subframe. For example... Figure 2 As shown, taking a wireless ad hoc network device based on NR technology as an example, the wireless frame structure can be fixed at 5 milliseconds, each wireless frame contains 5 subframes, and each subframe is 1 millisecond long, such as... Figure 3As shown, the subcarrier spacing is 15 kHz, each subframe contains one time slot, and each time slot contains 14 symbols. Under this framework, the PDCCH search spaces corresponding to the five consecutive subframes from subframe 0 to subframe 4 can be centrally configured within the first five symbols of subframe 0. Specifically, the PDCCH search space of subframe 0 is mapped to symbol 0 of subframe 0, the PDCCH search space of subframe 1 is mapped to symbol 1 of subframe 0, and so on, until the PDCCH search space of subframe 4 is mapped to symbol 4 of subframe 0.

[0057] Through this centralized mapping method, the PDCCH search space, which originally required occupying its own temporal resources in each of the five subframes, is compressed into the first five symbols of a single subframe for configuration. This mechanism of transforming distributed configuration into centralized configuration allows wireless ad hoc network devices to avoid detecting their respective PDCCH search spaces in each subframe. Instead, they only need to perform a centralized detection in the first few symbols of the first subframe to obtain the scheduling information for subsequent consecutive subframes. It should be noted that the above-described wireless frame structure and the specific number of subframes and symbols are only an exemplary implementation of this invention. In actual deployment, adaptive adjustments can be made according to the operating frequency band of the wireless ad hoc network device, network scale, and power consumption requirements. For example, different subcarrier spacings or different wireless frame lengths can be used, as long as the core idea of ​​centrally configuring the PDCCH search space of multiple consecutive subframes within the first few symbols of the first subframe and establishing a one-to-one correspondence is satisfied.

[0058] Step S104: Within the first few symbols of the first subframe, the physical downlink control channel search space corresponding to each subframe is centrally detected.

[0059] Specifically, after completing the above configuration, the wireless ad hoc network device performs centralized detection operations within the first few symbols of the first subframe. In other words, instead of detecting its physical downlink control channel search space separately in each subframe as in the traditional method, the device performs detection of the search spaces corresponding to each of several consecutive subframes all at once within a compact time window formed by the first few symbols of the first subframe. For example, continuing the previous example, after mapping the PDCCH search spaces of subframes 0 to 4 to symbols 0 to 4 of subframe 0, the device only needs to sequentially detect the search spaces on symbols 0 to 4 within the first 5 symbols of subframe 0 to determine whether there is PDCCH scheduling signaling pointing to its node in subframes 0 to 4. This centralized detection mechanism compresses the multiple detection operations originally scattered across 5 subframes into a very short time window within a single subframe, significantly shortening the wake-up time of the receive link.

[0060] Step S106: If the physical downlink control channel scheduling signaling of this node is detected in the physical downlink control channel search space corresponding to the target subframe, the receiving link is opened in the target subframe to receive physical downlink shared channel data; if the physical downlink control channel scheduling signaling of this node is not detected in the physical downlink control channel search space corresponding to the target subframe, the receiving link is closed in the target subframe.

[0061] Specifically, when a device detects its own physical downlink control channel scheduling signaling in the physical downlink control channel search space corresponding to a target subframe, it indicates that there is a downlink data transmission requirement for this node within that target subframe. The device will then open the receive link when the target subframe arrives to receive the corresponding physical downlink shared channel data. Conversely, when a device does not detect its own physical downlink control channel scheduling signaling in the physical downlink control channel search space corresponding to a target subframe, it indicates that there is no data scheduling for this node within that target subframe, and the device will keep the receive link closed during that target subframe.

[0062] Taking the previous mapping configuration as an example, if the device detects a PDCCH scheduling signaling for its own node on symbol 1 of subframe 0, according to the mapping rules, the signaling corresponds to subframe 1. Therefore, the device will activate the receiving link during subframe 1 and receive PDSCH data at the specified time-frequency resource location by parsing the resource allocation information in the PDCCH scheduling signaling. If the device does not detect any PDCCH scheduling signaling for its own node on symbol 2 of subframe 0, it will close the receiving link during subframe 2 and will not perform any data reception operations. Through this on-demand wake-up control logic, the device only activates the receiving circuit in subframes where data reception is required, and maintains a low-power standby state in subframes where there is no data reception requirement.

[0063] Because centralized detection is performed only in the first few symbols of a single subframe, while on-demand wake-up is initiated only in the subframe where data scheduling actually exists, the invalid wake-up time of the device's receive link is significantly reduced. For example, if data scheduling exists in only one of five consecutive subframes, the traditional method requires keeping the receive link awake for distributed detection in all five subframes. However, centralized detection is only required in the first five symbols of subframe 0, and the receive link is activated in the subframe where scheduling exists, while remaining disabled in the other four subframes. This achieves significant power consumption optimization.

[0064] In the aforementioned low-power implementation method for wireless ad hoc network devices, the physical downlink control channel (PDCCH) search spaces corresponding to multiple consecutive subframes are centrally configured within the first few symbols of the first subframe, establishing a one-to-one correspondence. This allows the wireless ad hoc network device to obtain scheduling information for subsequent subframes by performing a single centralized detection within the first few symbols of the first subframe. Based on this, the device activates or deactivates the receiving link as needed according to the detection results, waking up the receiving circuit only in target subframes where local node scheduling signaling exists; otherwise, it remains deactivated. Compared to traditional technologies where the receiving link needs to be woken up and its PDCCH search space dispersed for each subframe, this application transforms dispersed detection into centralized detection and long-term wake-up into on-demand wake-up, thereby significantly shortening the invalid wake-up time of the receiving link, reducing the number of blind PDCCH detections, lowering the signal processing overhead of the receiving link, and significantly optimizing the power consumption performance of the wireless ad hoc network device.

[0065] In an exemplary embodiment, the physical downlink control channel search spaces corresponding to each of multiple consecutive subframes are centrally configured within the first multiple symbols of the first subframe, and the physical downlink control channel search spaces corresponding to each of the multiple consecutive subframes correspond one-to-one with the first multiple symbols of the first subframe, including:

[0066] The physical downlink control channel search space corresponding to the first subframe in a series of consecutive subframes is mapped to the first symbol among the first symbols of the first subframe; until the physical downlink control channel search space corresponding to the last subframe in a series of consecutive subframes is mapped to the last symbol among the first symbols of the first subframe.

[0067] Specifically, the PDCCH search space corresponding to the first subframe in a series of consecutive subframes is mapped to the first symbol among the first symbols of the first subframe; the PDCCH search space corresponding to the second subframe in a series of consecutive subframes is mapped to the second symbol among the first symbols of the first subframe; and so on, until the PDCCH search space corresponding to the last subframe in a series of consecutive subframes is mapped to the last symbol among the first symbols of the first subframe. Through this sequential mapping method, a strict positional correspondence is established between subframes and symbols.

[0068] Taking the aforementioned NR-based wireless ad hoc network device as an example, when multiple consecutive subframes consist of five subframes (subframe 0 to subframe 4), and the first subframe is selected as subframe 0, the specific implementation of this mapping rule is as follows: the PDCCH search space of subframe 0 is mapped to symbol 0 of subframe 0; the PDCCH search space of subframe 1 is mapped to symbol 1 of subframe 0; the PDCCH search space of subframe 2 is mapped to symbol 2 of subframe 0; the PDCCH search space of subframe 3 is mapped to symbol 3 of subframe 0; and the PDCCH search space of subframe 4 is mapped to symbol 4 of subframe 0. This sequential mapping method makes the mapping relationship simple and clear, without the need to introduce complex index conversions or offset calculations.

[0069] By establishing this sequential mapping relationship, wireless ad hoc network devices can directly infer the subframe to which scheduling signaling belongs based on the detection location when performing centralized detection. Scheduling signaling detected by the device on the first symbol necessarily corresponds to the first subframe, scheduling signaling detected on the second symbol necessarily corresponds to the second subframe, and so on. This location-based inference method requires no additional parsing or table lookup operations, making the detection logic simple and efficient, thus reducing the processing overhead of the device. It should be noted that in the above mapping method, the first subframe itself also participates in the mapping as one of several consecutive subframes. That is, the PDCCH search space corresponding to the first subframe is mapped to the first symbol among its preceding symbols. This means that the device may perform centralized detection within the first subframe and may also receive data within the first subframe based on the detection results. This design ensures the integrity and flexibility of the scheduling mechanism.

[0070] In this embodiment, by sequentially mapping the PDCCH search space of multiple consecutive subframes to the first multiple symbols of the first subframe, a direct correspondence is formed between the detection position and the subframe affiliation. The wireless ad hoc network device can directly infer the target subframe to which the scheduling signal belongs based on the position of the detected symbol without performing additional parsing or table lookup operations, thereby simplifying the detection logic, reducing processing overhead, and further improving the implementation efficiency of the centralized detection mechanism.

[0071] In one exemplary embodiment, the method further includes:

[0072] The primary synchronization sequence and the secondary synchronization sequence are respectively configured on the preset symbols of the first subframe to achieve clock synchronization between wireless ad hoc network devices.

[0073] Specifically, before wireless ad hoc network devices begin communication, clock synchronization among all nodes within the network must first be established to ensure that each device can identify the wireless frame structure and the boundaries of each subframe and symbol under a unified time reference. To achieve this, the primary synchronization sequence and secondary synchronization sequence are configured on preset symbols of the first subframe. The primary and secondary synchronization sequences are standard sequences used for cell search and time-frequency synchronization in NR systems, possessing excellent autocorrelation and cross-correlation characteristics, enabling devices to achieve accurate time-domain and frequency-domain synchronization even under noise and interference conditions.

[0074] For example, in a wireless ad hoc network device based on NR technology, the primary synchronization sequence can be configured in symbol 13 of subframe 0, and the secondary synchronization sequence in symbol 12 of subframe 0. When the device starts up or needs to access the network, it can obtain the start position, symbol boundary, and frequency offset information of the first subframe by detecting the synchronization sequences on these preset symbols, thereby achieving precise clock synchronization with other devices in the network. The contiguous configuration of the primary and secondary synchronization sequences in the time domain enables the device to complete the entire synchronization process within two consecutive symbols, improving synchronization efficiency.

[0075] Based on this, since all devices achieve clock synchronization using the same synchronization sequence, each device develops a unified understanding of the radio frame structure, subframe numbering, and the positions of the first few symbols of the first subframe. This unified temporal understanding is a prerequisite for the correct execution of the subsequent centralized detection mechanism. That is, only when all devices accurately identify the boundaries of the first subframe and its preceding symbols can the centrally configured PDCCH search space be correctly detected, and the one-to-one mapping relationship be accurately resolved. It should be noted that the specific configuration of the symbol positions in the primary and secondary synchronization sequences can be adjusted according to the radio frame structure and actual deployment requirements, as long as it ensures that all devices can complete synchronization within a unified temporal framework.

[0076] In this embodiment, by configuring the primary synchronization sequence and the secondary synchronization sequence on the preset symbols of the first subframe, the wireless ad hoc network device can quickly obtain the starting position, symbol boundary and frequency offset information of the first subframe, realize precise clock synchronization among nodes in the network, provide a unified time domain reference for the centralized detection mechanism, ensure that each device accurately identifies the position of the first subframe and its preceding symbols, thereby ensuring the correct execution of subsequent centralized detection and on-demand wake-up mechanisms, and improving the reliability and detection accuracy of the system operation.

[0077] In one exemplary embodiment, the method further includes:

[0078] The distinction between public search space and user-specific search space has been removed; only public search space is configured.

[0079] Based on the size of the carrier physical resource block configuration, the number of types of control channel unit aggregation levels is limited;

[0080] Limit the number of physical downlink control channels scheduled within a single time slot.

[0081] Specifically, the traditional NR system eliminates the distinction between a public search space and a user-specific search space, configuring only the public search space. In the traditional NR architecture, the public search space carries common control signaling such as system information and paging, while the user-specific search space carries scheduling signaling for specific user devices. These two spaces differ in resource configuration, aggregation level, and detection cycle, requiring devices to perform blind detection on both search spaces simultaneously, resulting in significant detection overhead. Eliminating this distinction means all scheduling signaling is transmitted within the public search space. Wireless ad hoc network devices only need to perform detection according to a single search space configuration, eliminating the need to differentiate detection rules for different search space types, thus fundamentally reducing the complexity of blind detection.

[0082] Based on this, the number of control channel unit (PDCCH) aggregation levels is limited according to the configuration scale of the carrier physical resource block. The control channel unit aggregation level refers to the number of control channel units occupied by the PDCCH. Traditional NR systems support multiple options such as aggregation levels 1, 2, 4, 8, and 16 to adapt to transmission reliability requirements under different channel quality conditions. This means that the device needs to traverse multiple aggregation levels during blind detection, significantly increasing the number of detection attempts. Based on the operating scenario and carrier bandwidth of the wireless ad hoc network device, the number of aggregation levels is limited to no more than two. For example, in scenarios with a small physical resource block configuration, only aggregation levels 1 and 2, or only aggregation levels 2 and 4, are configured. By reducing the number of aggregation levels, the number of candidate sets that the device needs to try during blind detection is significantly reduced, thereby reducing signal processing overhead.

[0083] Simultaneously, the number of physical downlink control channels scheduled within a single time slot is limited, with a lower upper limit. In traditional NR systems, multiple PDCCHs can be scheduled within a single time slot to meet the needs of simultaneous scheduling by multiple users. However, in wireless ad hoc network scenarios, inter-node communication is mostly point-to-point or limited point-to-multipoint, and there is no need to support a large number of concurrent scheduling. By limiting the number of PDCCHs scheduled within a single time slot, for example, setting the upper limit to 2, the device only needs to process a limited number of candidate PDCCHs during each detection, further reducing the time and space overhead of blind detection. The above three simplification measures work together to form a lightweight PDCCH scheduling mechanism for wireless ad hoc network scenarios, minimizing the signal processing burden of the device's receiving link while ensuring basic scheduling functions.

[0084] In this embodiment, by eliminating the division between the public search space and the user-exclusive search space, limiting the number of types of control channel unit aggregation levels, and limiting the number of physical downlink control channels scheduled in a single time slot, the number of search space types, aggregation level candidate sets, and candidate PDCCHs that wireless ad hoc network devices need to try during blind detection is significantly reduced. This significantly reduces the complexity of blind detection and signal processing overhead, further reduces the overall power consumption of the receiving link, and improves the device's endurance.

[0085] In one exemplary embodiment, the method further includes:

[0086] A mechanism for periodically sending synchronization signal blocks is adopted, and the sending frequency of synchronization signal blocks is dynamically adjusted based on the node's movement rate;

[0087] The first node to access the network is set as the initial logical center node. The initial logical center node is responsible for network routing topology maintenance, air interface resource allocation and scheduling, and access control.

[0088] If the initial logical center node goes offline, the remaining nodes in the network will automatically trigger the election process for a new logical center node.

[0089] Specifically, a synchronization signal block periodic transmission mechanism is first adopted, and the transmission frequency of the synchronization signal block is dynamically adjusted based on the node's movement rate. The synchronization signal block is a key signaling mechanism used for neighbor discovery and detection. Nodes periodically transmit synchronization signal blocks, enabling surrounding nodes to discover themselves and assess link quality. During network initialization or in scenarios with high node movement rates, the network topology changes rapidly, requiring a higher synchronization signal block transmission frequency to ensure timely updates of neighbor information. Conversely, in scenarios where the network topology is relatively stable or node movement rates are low, the transmission frequency of the synchronization signal block can be reduced to minimize unnecessary RF transmission power consumption. For example, when nodes are stationary or moving at low speeds, the transmission period of the synchronization signal block can be extended to several seconds or even longer; when nodes are moving at high speeds, the transmission period can be shortened to milliseconds to adapt to rapid topology changes.

[0090] Building upon this foundation, a management architecture with a logical central node is introduced to centrally handle network maintenance tasks. Specifically, the first node to connect to the network is designated as the initial logical central node. This node undertakes core management functions, including maintaining the network routing topology, allocating and scheduling air interface resources, and controlling the access of new nodes. By centralizing management functions to a single node, the significant redundant communication overhead caused by the frequent exchange of network maintenance messages between each node in a distributed architecture is avoided, thereby effectively reducing the radio frequency transmission power consumption of all nodes in the network. For example, routing maintenance messages are only issued by the logical central node as needed based on network changes, rather than being periodically flooded by each node.

[0091] Furthermore, to ensure network robustness, in the event that the logical central node fails due to malfunction, signal obstruction, or power depletion, the remaining nodes in the network automatically trigger an election process for a new logical central node. The election process can employ a mechanism based on node identifier, priority, or link quality to ensure that the network can quickly restore its control capabilities and maintain normal network operation after the central node fails.

[0092] In this embodiment, by adopting a periodic transmission mechanism for synchronization signal blocks and dynamically adjusting the transmission frequency based on the node's movement rate, and by introducing a logical central node responsible for network routing topology maintenance, air interface resource allocation scheduling, and access control, and by setting an automatic election process after the central node is lost, the redundant transmission frequency of network maintenance messages is significantly reduced. Under the premise of ensuring the network's self-organizing characteristics and operational stability, the radio frequency transmission power consumption of each node is effectively reduced, thereby further improving the overall endurance of the wireless self-organizing network device.

[0093] In one exemplary embodiment, network management messages during network routing topology maintenance are transmitted in unicast mode, and the message sending period is adjusted according to the network operation scenario.

[0094] Specifically, network management messages are transmitted via unicast, rather than the traditional broadcast or multicast methods. In traditional ad hoc network architectures, management messages such as route maintenance and neighbor information exchange are typically broadcast across the entire network. This forces every node to receive and process these messages regardless of whether it needs the information, resulting in significant wasted power consumption. By limiting the target recipient of management messages to a specific single node, the sending node directly transmits them to the target node via unicast. Taking route updates as an example, when the logical central node detects a change in network topology, it only unicasts the route update message to the nodes affected by the change, instead of broadcasting it across the entire network. This significantly reduces the number of message transmissions and the processing burden on the receiving nodes.

[0095] Building upon this, the transmission cycle of network management messages can be dynamically adjusted based on the network operation scenario. Network operation scenarios can include stable network topology scenarios and dynamically changing network topology scenarios. In stable network topology scenarios, such as when node locations are fixed, link quality is good, and no new nodes join or leave, network structure changes slowly. In this case, the transmission cycle of management messages can be appropriately increased to reduce the frequency of redundant message transmissions, thereby lowering RF transmission power consumption and reception processing overhead. However, in dynamically changing network topology scenarios, such as when nodes move rapidly, link quality fluctuates frequently, or a large number of nodes dynamically join or leave, the network structure changes rapidly, requiring a higher management message transmission frequency to maintain the timeliness and accuracy of routing information. In this case, the message transmission cycle should be correspondingly reduced. For example, in a statically deployed wireless ad hoc network, the transmission cycle of route maintenance messages can be set to several minutes or even longer; while in high-speed mobile scenarios such as vehicular ad hoc networks, the transmission cycle may need to be shortened to milliseconds or seconds to adapt to rapid topology changes.

[0096] In this embodiment, by combining the aforementioned unicast transmission mode with scenario-based periodic adjustments, this solution minimizes redundant transmission and invalid reception of network management messages while ensuring the normal operation of network management functions. This further reduces the RF transmission power consumption and receive link processing power consumption of wireless ad hoc network devices. It should be noted that the determination of the network operating scenario can be based on a comprehensive evaluation by the logical central node using information such as node-reported movement speed, link quality measurement reports, or network topology change frequency. Periodic configuration parameters are then dynamically issued based on the evaluation results, enabling the network-wide management message transmission strategy to adaptively match the current network state.

[0097] It should be understood that although the steps in the flowcharts of the embodiments described above are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the embodiments described above may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the steps or stages of other steps.

[0098] Based on the same inventive concept, this application also provides a low-power implementation apparatus for a wireless ad hoc network device to implement the low-power implementation method of the wireless ad hoc network device described above. The solution provided by this apparatus is similar to the implementation scheme described in the above method. Therefore, the specific limitations in one or more embodiments of the low-power implementation apparatus for a wireless ad hoc network device provided below can be found in the limitations of the low-power implementation method for the wireless ad hoc network device described above, and will not be repeated here.

[0099] In one exemplary embodiment, such as Figure 4 As shown, a low-power implementation device for a wireless ad hoc network is provided, comprising:

[0100] The search space configuration module 402 is used to centrally configure the physical downlink control channel search space corresponding to each of the consecutive subframes within the first multiple symbols of the first subframe, and the physical downlink control channel search space corresponding to each of the consecutive subframes corresponds one-to-one with the first multiple symbols of the first subframe.

[0101] The detection module 404 is used to centrally detect the physical downlink control channel search space corresponding to each subframe within the first multiple symbols of the first subframe.

[0102] The link control module 406 is used to open the receiving link in the target subframe to receive physical downlink shared channel data when the physical downlink control channel scheduling signaling of the local node is detected in the physical downlink control channel search space corresponding to the target subframe.

[0103] The link control module 406 is also used to close the receiving link in the target subframe if no physical downlink control channel scheduling signaling of the local node is detected in the physical downlink control channel search space corresponding to the target subframe.

[0104] In an exemplary embodiment, the search space configuration module 402 is specifically used to map the physical downlink control channel search space corresponding to the first subframe in a series of consecutive subframes to the first symbol in the first series of symbols of the first subframe; until the physical downlink control channel search space corresponding to the last subframe in a series of consecutive subframes is mapped to the last symbol in the first series of symbols of the first subframe.

[0105] In an exemplary embodiment, the search space configuration module 402 is further configured to configure the primary synchronization sequence and the secondary synchronization sequence on preset symbols of the first subframe, so as to realize clock synchronization between wireless ad hoc network devices.

[0106] In an exemplary embodiment, the search space configuration module 402 is further configured to cancel the division between the public search space and the user-specific search space, and only configure the public search space; limit the number of control channel unit aggregation levels based on the carrier physical resource block configuration scale; and limit the number of physical downlink control channels scheduled in a single time slot.

[0107] In an exemplary embodiment, the search space configuration module 402 is further configured to adopt a periodic synchronization signal block sending mechanism and dynamically adjust the sending frequency of the synchronization signal block based on the node movement rate; set the first node to access the network as the initial logical center node, which is responsible for network routing topology maintenance, air interface resource allocation scheduling and access control; and automatically trigger the election process of a new logical center node when the initial logical center node loses network access.

[0108] In one exemplary embodiment, network management messages during network routing topology maintenance are transmitted in unicast mode, and the message sending period is adjusted according to the network operation scenario.

[0109] The various modules in the low-power implementation device of the aforementioned wireless ad hoc network equipment can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in the processor of a computer device in hardware form or independent of it, or stored in the memory of a computer device in software form, so that the processor can call and execute the corresponding operations of each module.

[0110] In one exemplary embodiment, a computer device is provided, which may be a server, and its internal structure diagram may be as follows: Figure 5 As shown, the computer device includes a processor, memory, input / output (I / O) interfaces, and a communication interface. The processor, memory, and I / O interfaces are connected via a system bus, and the communication interface is also connected to the system bus via the I / O interfaces. The processor provides computing and control capabilities. The memory includes non-volatile storage media and internal memory. The non-volatile storage media stores the operating system, computer programs, and a database. The internal memory provides the environment for the operating system and computer programs stored in the non-volatile storage media. The database stores data. The I / O interfaces are used for exchanging information between the processor and external devices. The communication interface is used for communicating with external terminals via a network connection. When the computer program is executed by the processor, it implements a low-power method for a wireless ad hoc network device.

[0111] Those skilled in the art will understand that Figure 5The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the computer device to which the present application is applied. Specific computer devices may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0112] In one exemplary embodiment, a computer device is provided, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the steps of the method described above.

[0113] In one embodiment, a computer-readable storage medium is provided having a computer program stored thereon, which, when executed by a processor, implements the steps of the above-described method.

[0114] In one embodiment, a computer program product is provided, including a computer program that, when executed by a processor, implements the steps of the method described above.

[0115] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, data stored, data displayed, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of the relevant data must comply with relevant regulations.

[0116] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. Any references to memory, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM). The databases involved in the embodiments provided in this application may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided in this application may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, artificial intelligence (AI) processors, etc., and are not limited to these.

[0117] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0118] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A low-power implementation method for a wireless ad hoc network device, characterized in that, The method, applied to a wireless ad hoc network device server, includes: The physical downlink control channel search space corresponding to each of the consecutive subframes is centrally configured within the first few symbols of the first subframe, and the physical downlink control channel search space corresponding to each of the consecutive subframes corresponds one-to-one with the first few symbols of the first subframe. Within the first few symbols of the first subframe, the physical downlink control channel search space corresponding to each subframe is detected in a concentrated manner. If the physical downlink control channel scheduling signaling of this node is detected in the physical downlink control channel search space corresponding to the target subframe, the receiving link is opened in the target subframe to receive physical downlink shared channel data. If no physical downlink control channel scheduling signaling is detected in the physical downlink control channel search space corresponding to the target subframe, the receiving link is shut down in the target subframe.

2. The method according to claim 1, characterized in that, The step of centrally configuring the physical downlink control channel search space corresponding to each of multiple consecutive subframes within the first multiple symbols of the first subframe, and ensuring that the physical downlink control channel search space corresponding to each of the multiple consecutive subframes corresponds one-to-one with the first multiple symbols of the first subframe, includes: The physical downlink control channel search space corresponding to the first subframe in the series of consecutive subframes is mapped to the first symbol in the first set of symbols of the first subframe; until the physical downlink control channel search space corresponding to the last subframe in the series of consecutive subframes is mapped to the last symbol in the first set of symbols of the first subframe.

3. The method according to claim 2, characterized in that, The method further includes: The primary synchronization sequence and the secondary synchronization sequence are respectively configured on the preset symbols of the first subframe to achieve clock synchronization between wireless ad hoc network devices.

4. The method according to claim 1, characterized in that, The method further includes: The distinction between public search space and user-specific search space has been removed; only public search space is configured. Based on the size of the carrier physical resource block configuration, the number of types of control channel unit aggregation levels is limited; Limit the number of physical downlink control channels scheduled within a single time slot.

5. The method according to claim 1, characterized in that, The method further includes: A mechanism for periodically sending synchronization signal blocks is adopted, and the sending frequency of synchronization signal blocks is dynamically adjusted based on the node's movement rate; The first node to access the network is set as the initial logical center node, which is responsible for network routing topology maintenance, air interface resource allocation and scheduling, and access control. If the initial logical center node goes offline, the remaining nodes in the network will automatically trigger the election process for a new logical center node.

6. The method according to claim 5, characterized in that, Network management messages during network routing topology maintenance use unicast transmission mode, and the message sending cycle is adjusted according to the network operation scenario.

7. A low-power implementation device for a wireless ad hoc network, characterized in that, The device includes: The search space configuration module is used to centrally configure the physical downlink control channel search space corresponding to each of multiple consecutive subframes within the first multiple symbols of the first subframe, and the physical downlink control channel search space corresponding to each of multiple consecutive subframes corresponds one-to-one with the first multiple symbols of the first subframe. The detection module is used to centrally detect the physical downlink control channel search space corresponding to each subframe within the first multiple symbols of the first subframe; The link control module is used to open the receiving link in the target subframe to receive physical downlink shared channel data when the physical downlink control channel scheduling signaling of the local node is detected in the physical downlink control channel search space corresponding to the target subframe. The link control module is also used to close the receiving link in the target subframe if no physical downlink control channel scheduling signaling of the local node is detected in the physical downlink control channel search space corresponding to the target subframe.

8. A computer device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the processor executes the computer program, it implements the steps of the method according to any one of claims 1 to 6.

9. 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 according to any one of claims 1 to 6.

10. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 6.

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