Energy saving method of 5G ad hoc network communication system, user equipment and base station

Abstract

The invention discloses an energy-saving method of a 5G ad hoc network communication system, user equipment and a base station, the method is based on a 5G ad hoc network communication system architecture, for a plurality of 5G mobile base station nodes, an energy-saving strategy is dynamically adopted according to the current load condition of the base station, the energy-saving strategy is to count the PRB utilization rate of each base station node, and the PRB utilization rate of each base station node is calculated according to the PRB utilization rate of each base station node. And according to the PRB utilization rates of different levels, in combination with a frame structure configured by the current base station, related time slots capable of being turned off are analyzed and obtained, and sub-frame turn-off operation of corresponding gears is carried out. Based on 5G air interface transmission, a wireless backhaul link and a dynamic routing technology, each base station node in the 5G ad hoc network autonomously selects a proper energy-saving optimization strategy according to a real-time load condition under the condition of ensuring the continuity and robustness of network coverage.

Description

Technical Field

[0001] The present invention relates to the field of communication technologies, and in particular, to an energy-saving method, a user equipment, and a base station for a 5G self-organizing network communication system. Background Art

[0002] At present, the fixed site deployment method of 5G base stations is the most widely used and successful deployment method for 5G applications. The fixed site of the base station is connected to the core network through optical fibers and can support a large amount of backhaul. However, this method limits the application of 5G in private network scenarios, especially scenarios such as fleet travel and sports events, which often do not meet the prerequisite conditions of fixed site wired backhaul. In these scenarios, the IAB (Integrated Access and Backhaul) technology can solve the 5G backhaul problem. Through the deployment method of wireless self-organizing network, the 5G base station does not rely on a fixed site to provide optical fiber backhaul and can be deployed anywhere to realize the mobility of the 5G base station.

[0003] The 5G base station itself has a relatively large demand for energy. Energy conservation and consumption reduction are the internal development needs to reduce electricity costs and improve the competitiveness of base station products. In the main applicable scenarios of wireless self-organizing networks, such as emergency environments and sports events, there is a lack of basic power supply facilities, and at the same time, efficient and rapid network deployment is required, resulting in each node base station often using battery power supply. The capacity of the battery itself is limited, and the 5G base station consumes a large amount of energy. Mobile sites without energy-saving strategies are extremely likely to cause the interruption of base station services due to the exhaustion of electric energy, affecting signal coverage. The existing self-organizing network energy-saving solutions adopt the method of directly powering off and sleeping the mobile sites. The solution is simple and highly dependent on the control and processing of the central node. And because of directly powering off and sleeping, the relevant mobile sites are in an out-of-service state, so the self-organizing network routing table must be updated in a timely manner, which brings a large number of information interaction processes and cannot guarantee the continuity and robustness of signal coverage.

[0004] Therefore, there is an urgent need to propose an energy-saving method for a 5G self-organizing network communication system that can guarantee the continuity and robustness of signal coverage and achieve energy conservation and consumption reduction. Summary of the Invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes an energy-saving method for a 5G self-organizing network communication system. Based on 5G air interface transmission, wireless backhaul links, and dynamic routing technologies, under the condition of ensuring the continuity and robustness of network coverage, each base station node in the 5G self-organizing network can independently select a suitable energy-saving optimization strategy according to the real-time load situation.

[0006] An energy-saving method for a 5G ad hoc communication system according to an embodiment of the present invention. Based on the 5G ad hoc communication system architecture, for multiple 5G mobile base station nodes, an energy-saving strategy is dynamically adopted according to the current load situation of the base stations. The energy-saving strategy is to statistically analyze the PRB utilization rate of each base station node, and based on different levels of PRB utilization rate, combined with the frame structure configured by the current base station, analyze the relevant time slots that can be turned off, and perform sub-frame turn-off operations at corresponding levels.

[0007] In some embodiments of the present invention, the method specifically includes the following steps: S1. Ensure that the sub-frame turn-off energy-saving function of each mobile base station node in the 5G ad hoc network architecture takes effect; S2. The DU module of each mobile base station node statistically analyzes the PRB utilization rate of the cells within its own station to obtain the smoothed value of the PRB utilization rate within a preset time period; S3. The load data analysis module inside each mobile base station node determines the current load level and the corresponding time slots that can be turned off according to the smoothed value of the PRB utilization rate, and reports the load level and the corresponding time slot information to the hardware turn-off processing module within the current station; S4. The hardware turn-off processing module performs radio frequency hardware turn-off and sleep on the corresponding time slots according to the time slot information that can be turned off; S5. The DU module inside each mobile base station node continuously detects the load situation and adjusts the sub-frame turn-off strategy within its own station in real time.

[0008] In some embodiments of the present invention, in step S2, there is a DU module in each mobile base station node. The DU module collects and analyzes the PRB utilization rate within its own station; through a preset load acquisition timer and configures the duration, the PRB utilization rate is statistically analyzed within the configured duration, and the smoothed value of the PRB utilization rate within the configured duration is used as the load status of the current site.

[0009] In some embodiments of the present invention, step S3 includes: Step S31. The load data analysis module obtains the smoothed value of the PRB utilization rate, maps the smoothed value of the PRB utilization rate to a preset load level interval, and obtains the corresponding time slots that can be turned off according to the turn-off time slot table; wherein, the turn-off time slot table is based on the frame structure configured by the current base station, reflecting the turn-off time slot part and the non-turn-off time slot part, and different load level intervals correspond to different turn-off time slots; Step S32. The load data analysis module transfers the analysis result to the hardware turn-off processing module in the form of a bitmap, and the analysis result at least includes the load level and the corresponding time slot information that can be turned off.

[0010] In some embodiments of the present invention, after the hardware shutdown processing module in step S4 receives the analysis result and obtains the shuttable time slot part and the non-shuttable time slot part in the current frame structure indicated in the form of a bitmap, actual radio frequency hardware shutdown and recovery processing is performed; wherein, the radio frequency hardware shutdown and recovery processing means: on the shuttable time slots, the power amplifier radio frequency hardware is turned off; on the non-shuttable time slots, the radio frequency hardware is started to resume normal operation.

[0011] The present invention also discloses a user equipment, including: a transceiver, a processor, the processor is coupled to the transceiver and configured to control the execution of the steps of the above method.

[0012] The present invention also discloses a base station, including: a DU module, the DU module is used to count the PRB utilization rate of the cells in the current station and can adopt the smoothed value of the PRB utilization rate within a certain time period; a load data analysis module, the load data analysis module is arranged in the DU module and is used to judge the current load level and the corresponding shuttable time slots according to the smoothed value of the PRB utilization rate; a hardware shutdown processing module; the hardware shutdown processing module is connected to the load data analysis module and is used to perform actual radio frequency hardware shutdown and recovery processing according to the received analysis result.

[0013] The energy-saving method of the 5G self-organizing network communication system according to the embodiments of the present invention, that is, based on the 5G self-organizing network communication system architecture, for multiple 5G mobile base station nodes, an energy-saving strategy is dynamically adopted according to the current load situation of the base station. Specifically, the energy-saving method of subframe shutdown is adopted. The DU module inside each node base station counts the PRB utilization rate, and according to different levels of PRB utilization rate, combined with the frame structure configured by the current base station, corresponding gear subframe shutdown operations are performed. Different shutdown gears refer to being divided into gears according to the interval to which the current PRB utilization rate belongs. The lower the PRB utilization rate, the more time slots are shut down, and the better the energy-saving effect. Description of the Drawings

[0014] Figure 1 is a flowchart of an energy-saving method of a 5G self-organizing network communication system according to an embodiment of the present invention; Figure 2 is a schematic diagram of the base station of the present invention. Detailed Embodiments

[0015] Embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0016] For ease of understanding, before introducing the embodiments of the present disclosure, several terms involved in the embodiments of the present disclosure are explained as follows: UE: User Equipment, the user device, also known as the user terminal, abbreviated as the terminal.

[0017] IAB: Integrated Access and Backhaul, integrated access and backhaul.

[0018] 5G communication technology is one of the most advanced network communication technologies, with high transmission speed, low transmission delay, extremely large network capacity, and stable network connection, bringing many conveniences and efficiency improvements to life and work. Existing 5G communication base stations are mainly deployed in the form of fixed site addresses. However, in most scenarios of industry private networks, the network is more dynamic, such as fire rescue emergency scenarios and civil air defense and stability maintenance emergency scenarios, etc. Communication devices need to form networks on the move at any time. This kind of networking shows the characteristics of strong mobility and a large number of users. The mobile network deployed with a fixed site address cannot handle it, restricting the application of 5G in these scenarios. For example, in the battlefield, the troops quickly deploy and advance, and in the rescue after an earthquake or flood, etc. The communication in these occasions cannot rely on any preset network facilities, but requires a mobile network that can quickly and automatically form a network temporarily.

[0019] Currently, for the existing self-organizing network architectures, for the main applicable scenarios of wireless self-organizing networks, such as emergency environments, sports events, etc., there is a lack of basic power supply facilities, resulting in each node base station often using battery power supply. The capacity of the battery itself is limited, and 5G base stations consume a large amount of energy. Mobile sites without energy-saving strategies are extremely likely to cause the base station service to be interrupted due to power exhaustion, affecting signal coverage.

[0020] The current existing self-organizing network energy-saving solutions adopt the method of directly powering off and sleeping for mobile sites. The solution is too simple and highly dependent on the control and processing of the central node. And because directly powering off and sleeping causes the relevant mobile sites to be in an out-of-service state, it is necessary to interact and update the self-organizing network routing table in a timely manner, bringing a large number of information interaction processes and unable to guarantee the continuity and robustness of signal coverage.

[0021] In view of this scenario, the present invention proposes an energy-saving method for a 5G self-organizing network communication system, which can achieve self-organizing networking while solving the problem that the continuity and robustness of signal coverage cannot be guaranteed in the existing self-organizing network energy-saving solutions.

[0022] The following is a reference to Figure 1 - Figure 2 Describe an energy-saving method for a 5G ad-hoc communication system according to an embodiment of the present invention. Based on the 5G ad-hoc communication system architecture, for multiple 5G mobile base station nodes, an energy-saving strategy is dynamically adopted according to the current load situation of the base station. The energy-saving strategy is to statistically analyze the PRB utilization rate of each base station node, and according to different levels of PRB utilization rate, combined with the frame structure configured by the current base station, analyze the relevant time slots that can be turned off, and perform sub-frame turning-off operations at corresponding levels.

[0023] It can be understood that the present invention is based on the sub-frame turning-off energy-saving technology. The DU module inside each node base station statistically analyzes the PRB utilization rate, and according to different levels of PRB utilization rate, combined with the frame structure configured by the current base station, performs sub-frame turning-off operations at corresponding levels. Through the present invention, the sub-frame turning-off gear strategy selection is statistically analyzed by each node itself, without relying on the control and processing of the central node, and the sub-frame turning-off technology only turns off radio frequency hardware such as power amplifiers on some time slots, and the base station is still in the serving state. While achieving a certain energy-saving effect, it does not involve frequent updates of the ad-hoc routing table, and well solves the shortcomings of the existing ad-hoc energy-saving technology.

[0024] In some embodiments of the present invention, the method specifically includes the following steps: S1. Ensure that the sub-frame turning-off energy-saving function of each mobile base station node in the 5G ad-hoc network architecture takes effect; S2. The DU module of each mobile base station node statistically analyzes the PRB utilization rate of the cells within its own station, and obtains the smoothed value of the PRB utilization rate within a preset time period; S3. The load data analysis module inside each mobile base station node judges the current load level and the corresponding time slots that can be turned off according to the smoothed value of the PRB utilization rate, and reports the load level and the corresponding time slot information to the hardware turning-off processing module within the current station; S4. The hardware turning-off processing module turns off and sleeps the radio frequency hardware on the corresponding time slots according to the time slot information that can be turned off; S5. The DU module inside each mobile base station node continuously detects the load situation and adjusts the sub-frame turning-off strategy within its own station in real time.

[0025] It can be understood that based on 5G technology, combined with the scenarios and requirements of dynamic networking in industrial private networks, the present invention provides an energy-saving method for a 5G ad-hoc communication system. Based on 5G air interface transmission, wireless backhaul links and dynamic routing technology, while ensuring the continuity and robustness of network coverage, each base station node in the 5G ad-hoc network can independently select a suitable energy-saving optimization strategy according to the real-time load situation.

[0026] In practical outfield applications, through the method of the present invention, based on the ad hoc network architecture, the energy-saving function of each mobile station can be realized. The DU module inside each node base station is used to count the PRB utilization rate, that is, analyze the current load situation, and combine the frame structure configuration to reasonably select the energy-saving strategy of subframe shutdown. Through the present invention, the site-level energy-saving effect of 5G ad hoc network can be achieved, and the energy-saving strategy is analyzed by each node independently, without relying on the existence and control processing of the central node. Moreover, during the process, the base station remains in the serving state, without involving frequent updates of the ad hoc network routing table, minimizing manual intervention as much as possible under the premise of ensuring system performance and service effect, and ensuring the actual energy-saving effect and service experience.

[0027] In some embodiments of the present invention, in step S2, each mobile base station node is provided with a DU module, and the DU module collects and analyzes the PRB utilization rate within its own station; a preset load acquisition timer is set, and the duration is configured. The PRB utilization rate is counted within the configured duration, and the smoothed value of the PRB utilization rate within the configured duration is used as the load status of the current site.

[0028] It can be understood that, based on the 5G ad hoc network architecture, through the DU modules inside each site involved in the method of the present invention, the current PRB utilization rate is collected and analyzed. A load acquisition timer can be preset and a certain duration can be configured. The PRB utilization rate is counted within the configured duration. Since the data of the PRB utilization rate is usually at the time slot level, the smoothed value of the PRB utilization rate within the configured duration can be used to objectively and reasonably reflect the load status of the current site.

[0029] In some embodiments of the present invention, step S3 includes: Step S31: The load data analysis module obtains the smoothed value of the PRB utilization rate, maps the smoothed value of the PRB utilization rate to a preset load level interval, and obtains the corresponding turn-off time slots according to the turn-off time slot table; wherein, the turn-off time slot table is based on the frame structure configured by the current base station, reflecting the turn-off time slot part and the non-turn-off time slot part, and different load level intervals correspond to different turn-off time slots; Step S32: The load data analysis module transfers the analysis result to the hardware shutdown processing module in the form of a bitmap, and the analysis result at least includes the load level and the corresponding turn-off time slot information.

[0030] It can be understood that after obtaining the smoothed PRB utilization value, the load data analysis module within the site will map the smoothed value to a preset load level range. Different load level ranges correspond to different turn-off time slot tables. This table is based on the frame structure configured for the current base station, reflects the turn-offable time slot part and the non-turn-offable time slot part, and is passed to the hardware turn-off processing module in the form of a bitmap for actual radio frequency hardware turn-off and recovery processing.

[0031] In some embodiments of the present invention, in step S4, after the hardware turn-off processing module receives the analysis result and obtains the turn-offable time slot part and the non-turn-offable time slot part in the current frame structure indicated in the form of a bitmap, it performs actual radio frequency hardware turn-off and recovery processing; wherein, the radio frequency hardware turn-off and recovery processing means: on the turn-offable time slots, the power amplifier radio frequency hardware is turned off; on the non-turn-offable time slots, the radio frequency hardware is started to resume normal operation.

[0032] It can be understood that when the method of the present invention takes effect, when the hardware turn-off processing module within each mobile site receives the analysis result from the DU data analysis module, specifically, the turn-offable time slot part and the non-turn-offable time slot part in the current frame structure indicated in the form of a bitmap, the hardware turn-off processing module performs actual radio frequency hardware turn-off and recovery processing. On the turn-offable time slots, radio frequency hardware such as the power amplifier is turned off, and on the non-turn-offable time slots, the radio frequency hardware is started to resume normal operation.

[0033] The specific applicable scenario of the present invention is in the 5G self-organizing network scenario for the enhanced energy-saving function of each mobile site. According to the need, components such as the power amplifier in the radio frequency hardware are turned off. The actual energy-saving data is related to the specific device specifications and the current load conditions, approximately 10 - 20%.

[0034] The present invention also discloses a user equipment, including: a transceiver, a processor, the processor is coupled with the transceiver and configured to control the execution of the steps of the above method.

[0035] The present invention also discloses a base station, including: a DU module, the DU module is used to count the PRB utilization rate of the cells within the current station and can adopt the smoothed PRB utilization value within a certain time period; a load data analysis module, the load data analysis module is arranged within the DU module and is used to judge the current load level and the corresponding turn-offable time slots according to the smoothed PRB utilization value; a hardware turn-off processing module; the hardware turn-off processing module is connected to the load data analysis module and is used to perform actual radio frequency hardware turn-off and recovery processing according to the received analysis result.

[0036] It can be understood that the DU module inside each mobile base station can count the PRB utilization rate according to the current load condition of the base station, determine the load interval level it belongs to, and then perform corresponding subframe shutdown operations. Specifically, different PRB utilization rates combined with the current frame structure of the base station correspond to different shutdown time slots. On the analyzed shutdown time slots, radio frequency hardware such as power amplifiers is turned off to achieve the purpose of reducing static power consumption. When the PRB utilization rate increases, the radio frequency hardware is restarted to restore normal operation to ensure complete data transmission.

[0037] In summary, the present invention mainly solves the incompleteness of the energy-saving function in the application of 5G technology in the dynamic networking scenario of industrial private networks, ensures the rapid, safe and flexible deployment of 5G networks in complex environments, enables seamless connection of the demand coverage area, and at the same time realizes dynamic network situation perception and multi-level communication node collaborative integration. The site-level energy-saving function takes effect timely in the low-load state. For each mobile site, the load condition is analyzed, and the gear and strategy of subframe shutdown are intelligently selected to avoid waste of resources and energy consumption, and to improve the quality and efficiency of the network side.

[0038] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. An energy-saving method for a 5G ad hoc communication system, characterized in that, This method is based on the 5G self-organizing network communication system architecture. For multiple 5G mobile base station nodes, an energy-saving strategy is dynamically adopted according to the current load condition of the base stations. The energy-saving strategy is to statistically analyze the PRB utilization rate of each base station node, and based on different levels of PRB utilization rate, combined with the frame structure configured for the current base station, analyze the relevant time slots that can be shut down, and perform sub-frame shutdown operations at corresponding levels.

2. The energy-saving method of a 5G ad hoc communication system according to claim 1, characterized in that, It includes the following steps: S1. Ensure that the sub-frame shutdown energy-saving function of each mobile base station node in the 5G self-organizing network architecture takes effect; S2. The DU module of each mobile base station node statistically analyzes the PRB utilization rate of the cells within its own station to obtain the smoothed value of the PRB utilization rate within a preset time period; S3. The load data analysis module within each mobile base station node determines the current load level and the corresponding time slots that can be shut down according to the smoothed value of the PRB utilization rate, and reports the load level and the corresponding time slot information to the hardware shutdown processing module within the current station; S4. The hardware shutdown processing module performs radio frequency hardware shutdown and sleep on the corresponding time slots according to the time slot information that can be shut down; S5. The DU module within each mobile base station node continuously detects the load condition and adjusts the sub-frame shutdown strategy within its own station in real time.

3. The energy-saving method of a 5G ad hoc communication system according to claim 2, characterized in that In step S2, each mobile base station node is equipped with a DU module, which collects and analyzes the PRB utilization rate within its own station; through a preset load acquisition timer and configured duration, the PRB utilization rate is statistically analyzed within the configured duration, and the smoothed value of the PRB utilization rate within the configured duration is used as the load status of the current station.

4. An energy-saving method for a 5G ad hoc communication system according to claim 2, characterized in that, Step S3 includes: Step S31. The load data analysis module obtains the smoothed value of the PRB utilization rate, maps the smoothed value of the PRB utilization rate to a preset load level interval, and obtains the corresponding time slots that can be shut down according to the time slot table that can be shut down; among them, the time slot table that can be shut down is based on the frame structure configured for the current base station, reflecting the time slot parts that can be shut down and the time slot parts that cannot be shut down, and different load level intervals correspond to different time slots that can be shut down; Step S32. The load data analysis module transfers the analysis result to the hardware shutdown processing module in the form of a bitmap, and the analysis result at least includes the load level and the corresponding time slot information that can be shut down.

5. An energy-saving method for a 5G ad hoc communication system according to claim 2, characterized in that, In step S4, after receiving the analysis result, the hardware shutdown processing module obtains the time slot parts that can be shut down and the time slot parts that cannot be shut down in the current frame structure indicated in the form of a bitmap, and performs actual radio frequency hardware shutdown and recovery processing; among them, the radio frequency hardware shutdown and recovery processing refers to: on the time slots that can be shut down, the power amplifier radio frequency hardware is turned off; on the time slots that cannot be shut down, the radio frequency hardware is started to resume normal operation.

6. A user equipment, characterized in that, It includes: A transceiver, A processor, which is coupled to the transceiver and configured to control the execution of the steps of the method according to any one of claims 1 to 5.

7. A base station, characterized in that, It includes: A DU module, which is used to statistically analyze the PRB utilization rate of the cells within the current station and can adopt the smoothed value of the PRB utilization rate within a certain time period; A load data analysis module, which is disposed in the DU module and is used to judge the current load level and the corresponding turn-off time slots according to the smoothed value of the PRB utilization rate; A hardware turn-off processing module; The hardware turn-off processing module is connected to the load data analysis module and is used to perform actual radio frequency hardware turn-off and recovery processing according to the received analysis result.

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