Dormant base station wakeup method and system

Abstract

The application provides a dormant base station wake-up method and system. The method comprises: receiving a to-be-detected signal by a base station in a dormant state, and determining a signal-to-interference-plus-noise ratio of the to-be-detected signal; wherein the receiver of the base station is turned on in the dormant state; determining whether the base station receives a signal sent by a user based on the signal-to-interference-plus-noise ratio of the to-be-detected signal, and switching the base station to a wake-up state. The method can accurately identify whether the signal received by the dormant base station is the signal sent by the user, reduces the influence of interference and noise on the identification result, and wakes up the dormant base station in time when it is determined that the signal sent by the user is received.

Description

Technical Field

[0001] This invention relates to the field of wireless communication technology, and in particular to a method and system for waking up a dormant base station. Background Technology

[0002] As the energy consumption of wireless communication base stations increases, the demand for energy conservation is also becoming more urgent. In indoor settings such as stadiums, libraries, office buildings, and shopping malls that are not open 24 hours, the number of mobile users exhibits a clear tidal characteristic, with near-zero mobile user numbers at night. If base stations continue to operate normally at night, it would result in significant waste. To reduce energy consumption, various base station hibernation strategies have emerged.

[0003] The existing methods for waking up dormant base stations mainly include the following three approaches: 1) Timed wake-up of nearby base stations based on the opening hours of specific public places; 2) The transmitter of the dormant base station is turned off, but the receiver is still in operation. After the terminal enters the range of the dormant base station, it wakes up the base station through a special wake-up signal; 3) The dormant base station is woken up after the neighboring base station senses the user.

[0004] The above methods have the following drawbacks: Method 1) is a one-size-fits-all approach, which will result in users in the corresponding service area being in a state of no service after the base station goes into hibernation; Method 2) requires significant modifications to the base station and terminal, and is prone to false triggering in scenarios with interference; Method 3) relies on other complex technologies, making it difficult to implement. Summary of the Invention

[0005] The method and system for waking up a dormant base station provided by the present invention are used to at least partially improve the above-mentioned problems existing in the prior art, and to wake up the dormant base station in a timely manner when it is determined that a signal sent by a user has been received.

[0006] The present invention provides a method for waking up a dormant base station, comprising:

[0007] The base station receives the signal to be detected in a sleep state and determines the signal-to-interference-plus-noise ratio of the signal to be detected; wherein the base station receiver is turned on in the sleep state.

[0008] Based on the signal-to-interference-plus-noise ratio of the signal to be detected, it is determined that the base station has received a signal sent by the user, and the base station is switched to the wake-up state.

[0009] According to the dormant base station wake-up method provided by the present invention, the step of determining, based on the signal-to-interference-plus-noise ratio of the signal to be detected, that the base station has received a signal sent by a user, and switching the base station to a wake-up state, specifically includes:

[0010] Based on the signal to be detected, a target symbol set is determined according to a preset power threshold; wherein the power of the target symbols in the target symbol set is greater than the preset power threshold;

[0011] Based on the target symbol set and the signal-to-interference-plus-noise ratio of the signal to be detected, it is determined that the base station has received a signal sent by the user, and the base station is switched to the wake-up state.

[0012] According to the dormant base station wake-up method provided by the present invention, based on the target symbol set and the signal-to-interference-plus-noise ratio of the signal to be detected, it is determined that the base station has received a signal sent by the user, and the base station is switched to a wake-up state, specifically including:

[0013] If it is determined that the signal-to-interference-plus-noise ratio is greater than a preset signal-to-noise ratio threshold, and it is determined that the target symbol is periodic, then it is determined that the base station has received a signal sent by the user, and the base station is switched to the wake-up state.

[0014] According to the dormant base station wake-up method provided by the present invention, determining that the target symbol has periodicity specifically includes:

[0015] Based on the target symbol set, determine the number of spacing symbols between the target symbols;

[0016] Based on the number of interval symbols between the target symbols, it is determined that the target symbols have periodicity.

[0017] According to the dormant base station wake-up method provided by the present invention, the base station receives a signal to be detected in a dormant state and determines the signal-to-interference-plus-noise ratio of the signal to be detected, specifically including:

[0018] Based on the signal to be detected received by the base station in sleep mode, the power corresponding to the symbol in the signal to be detected is determined;

[0019] Based on the power corresponding to the symbol, the signal-to-interference-plus-noise ratio of the signal to be detected is determined.

[0020] According to the dormant base station wake-up method provided by the present invention, the signal-to-interference-plus-noise ratio of the signal to be detected is determined based on the power corresponding to the symbol, specifically including:

[0021] Based on the power corresponding to the symbols, a first target symbol and a second target symbol are determined; wherein, the first target symbol is the symbol with the highest power in the signal to be detected; and the second target symbol is the symbol with the lowest power in the signal to be detected.

[0022] Based on the power of the first target symbol and the power of the second target symbol, the signal-to-interference-plus-noise ratio of the signal to be detected is determined.

[0023] According to the dormant base station wake-up method provided by the present invention, the signal sent by the user includes any one or more of the following: uplink probe reference signal, physical uplink control channel signal, uplink physical shared channel signal, and physical random access channel signal.

[0024] The present invention also provides a dormant base station wake-up system, comprising: a signal receiving detection unit and a base station state switching unit;

[0025] The signal receiving and detection unit is used to receive the signal to be detected in the base station in a sleep state and determine the signal-to-interference-plus-noise ratio of the signal to be detected; wherein the base station receiver is turned on in the sleep state.

[0026] The base station state switching unit is used to determine, based on the signal-to-interference-plus-noise ratio of the signal to be detected, that the base station has received a signal sent by the user, and to switch the base station to the wake-up state.

[0027] The present invention also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the steps of any of the base station wake-up methods described above.

[0028] The present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of any of the base station wake-up methods described above.

[0029] The method and system for waking up a dormant base station provided by this invention can reduce the impact of interference and noise on the identification results by identifying the signal-to-interference-plus-noise ratio of the signal detected by the base station, accurately determine whether the dormant base station has received the signal sent by the user, and wake up the dormant base station in a timely manner when it is determined that the signal sent by the user has been received, thereby realizing the automatic wake-up of the dormant base station. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0031] Figure 1 This is a flowchart of the dormant base station wake-up method provided by the present invention;

[0032] Figure 2 This is a schematic diagram of the base station receiving user signals from a neighboring base station, provided by the present invention.

[0033] Figure 3 This is a schematic diagram of the power distribution of user signal symbols provided by the present invention;

[0034] Figure 4 This is a schematic diagram of the power distribution of intermittent interference symbols provided by the present invention;

[0035] Figure 5 This is a schematic diagram illustrating the accuracy of receiver statistical uplink power calculation provided by existing technology;

[0036] Figure 6 This is a schematic diagram illustrating the accuracy of receiver statistical uplink power calculation provided by the present invention;

[0037] Figure 7 This is a schematic diagram of the structure of the hibernation base station wake-up system provided by the present invention;

[0038] Figure 8 This is a schematic diagram of the physical structure of the electronic device provided by the present invention. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0040] The existing methods for waking up dormant base stations mainly include the following three approaches:

[0041] Method 1: Timed sleep / wake-up

[0042] Taking advantage of the relatively fixed opening hours of public places, the wireless base station is woken up in advance in the morning before mobile users enter, and put into sleep mode after opening at night.

[0043] The advantage of this method of periodically putting wireless base stations into sleep mode and waking them up is its simplicity; it only requires periodically powering the system on and off. However, this one-size-fits-all approach also has significant drawbacks. Users entering the service area during the sleep period will remain without service, which can lead to serious consequences, especially in emergencies such as fires, where the lack of network connectivity could prevent alarms from functioning.

[0044] Method 2: Wake up the dormant base station by sending a special wake-up signal from the terminal.

[0045] In sleep mode, the base station shuts down the transmitter but keeps the receiver operational. When a mobile user enters the range of a sleep base station from a neighboring base station, the neighboring base station detects a deterioration in channel quality and then issues a command to instruct the mobile user to send a wake-up signal according to an agreed frequency and sequence. The sleep base station terminates sleep mode if the amplitude of the detected signal exceeds a preset threshold.

[0046] This method relies on mobile users sending wake-up signals according to an agreed frequency and sequence, and these wake-up signals are not sent normally, but only under specific conditions. To implement this method, significant modifications are required to both base stations and commercial terminals.

[0047] Furthermore, this method only uses a certain power threshold to identify the wake-up signal, which can easily lead to false triggering in scenarios with interference. For example, if there is fixed interference near the dormant base station, and it happens to be within the base station's receiving frequency range, the base station will continuously assume that a user is present, thus causing the base station to remain in a wake-up state.

[0048] Method 3: Wake up dormant base stations after sensing users through neighboring base stations.

[0049] When a user accesses the network from an adjacent base station, the BBU (RemoteRadioUnit) wakes up all the adjacent base stations of the accessing base station according to the base station topology. When the user enters the coverage area of ​​the next base station, the adjacent base stations of the next base station are then woken up.

[0050] Implementing this method requires two prerequisites: First, the BBU must know the topology of all base stations and be able to determine which base stations are around the current access base station based on the topology; second, the BBU must be able to know which base station the user accessed through.

[0051] Regarding the first point, the BBU can identify topological relationships through relevant algorithms. However, if the adjacent cells are not from the same manufacturer's base station equipment, cross-manufacturer interaction is required to notify and wake up the adjacent cells, which is not currently feasible.

[0052] Regarding the second point, existing indoor distribution equipment all have radio frequency merging. Under the background of radio frequency merging, the BBU cannot directly distinguish which base station in the same cell the user accessed through. An additional indoor positioning solution is needed to confirm which base station the user accessed through.

[0053] In summary, this method relies on other complex technologies, making it technically challenging and complex to implement.

[0054] In conclusion, none of the existing technologies can easily achieve real-time wake-up of dormant base stations.

[0055] Before providing a detailed description of the present invention, the relevant concepts involved in the present invention will first be explained.

[0056] The structure of a radio frame includes: radio frame, time slot, and symbol.

[0057] In the 5G wireless frame structure, 10ms consists of 20 slots, and each slot consists of 14 symbols, so there are a total of 280 symbols in 10ms, and each symbol is about 35.7us.

[0058] In the 4G wireless frame structure, 10ms consists of 10 slots, and each slot consists of 14 symbols, so there are a total of 140 symbols in 10ms, and each symbol is about 71.4us.

[0059] Figure 1 This is a flowchart of the dormant base station wake-up method provided by the present invention, as follows: Figure 1 As shown, the present invention provides a method for waking up a dormant base station, comprising:

[0060] Step S1: The base station receives the signal to be detected in a sleep state and determines the signal-to-interference-plus-noise ratio of the signal to be detected; wherein, the base station receiver is turned on in the sleep state.

[0061] Step S2: Based on the signal-to-interference-plus-noise ratio of the signal to be detected, determine that the base station has received a signal sent by the user, and switch the base station to the wake-up state.

[0062] It should be noted that the above method can be implemented by computer equipment.

[0063] Optionally, the transmitter in a wireless base station consumes the most power, and base station sleep mode primarily relies on shutting down the transmitter to achieve energy savings. In this solution, the base station transmitter is off and the receiver is on in sleep mode. In wake-up mode, both the base station transmitter and receiver are on.

[0064] Figure 2 This is a schematic diagram of the base station receiving user signals from a neighboring base station provided by the present invention, as shown below. Figure 2 As shown, when a mobile user approaches this base station from the service area of ​​an adjacent base station and enters the overlapping area of ​​the coverage of the two base stations, this base station can receive the uplink service signal sent by the user to the adjacent base station.

[0065] In order to enable the base station to wake up autonomously, the base station receiver receives signals in the base station's sleep state and uses them as the signals to be detected. The signals to be detected are detected in real time to determine whether a user is approaching the base station.

[0066] In step S1, the base station receives the signal to be detected in a sleep state and calculates the signal-to-interference-plus-noise ratio of the signal to be detected.

[0067] It should be noted that conventional base station power statistics methods are used to reflect the amount of uplink traffic, typically measuring the power of all uplink channels in 10ms increments. The Signal to Interference plus Noise Ratio (SINR) refers to the ratio of the strength of the received useful signal to the strength of the received interference signal (noise and interference). In other words, it calculates the difference between the average power of the useful signal and the noise and interference signal (noise floor) within a given time unit.

[0068] However, since the base station is in sleep mode, the received signals may include those from users, which have a short duration. After being averaged over a unit of time, the power becomes insignificant, making it difficult to determine whether the signal to be detected includes signals sent by users.

[0069] In this invention, the method for calculating the signal-to-interference-plus-noise ratio of the signal to be detected can be a preset unit duration (short duration). The ratio of the strength of the useful signal to the strength of the received interference signal (noise and interference) corresponding to this unit duration can be calculated. Because the preset unit duration is short, it avoids the problem that the signal strength (power) after averaging is not significant, resulting in an excessively low signal-to-noise ratio that is difficult to judge. It should be noted that the specific value of the preset unit duration can be set according to actual conditions, and this invention does not limit it.

[0070] Secondly, by using real-time detection, the power of a signal with minimal signal change over a certain period can be pre-selected as the power corresponding to the intensity of the interference signal (noise and interference). Based on this value, the power of the signal to be detected in real time is taken as the power of the useful signal, and the signal-to-noise ratio (SNR) for each symbol can be calculated. Furthermore, by comparing the SNR of each symbol in real time, it can be determined whether it exceeds a preset threshold, thus confirming whether it is a signal sent by the user. It should be noted that the specific value of the preset threshold can be set according to actual conditions, and this invention does not limit it.

[0071] It is understood that the above method for calculating the signal-to-interference-plus-noise ratio of the signal to be detected is only a specific example to illustrate the present invention. In addition, other methods can be used, such as setting a power threshold and using the average power of symbols whose power is greater than the threshold as the useful signal; or determining that a symbol's power is greater than a preset power threshold and calculating the signal-to-noise ratio within a preset symbol range (e.g., the range defined by the five symbols before and after that symbol) centered on that symbol; or selecting the maximum power of the symbol within a preset unit time period as the useful signal to calculate the signal-to-noise ratio. In practical applications of the present invention, the method for calculating the signal-to-noise ratio can be set according to actual needs, and the present invention does not limit this.

[0072] In step S2, based on the calculated signal-to-interference-plus-noise ratio of the signal to be detected, it is determined whether the dormant base station has received the signal sent by the user. If it is determined that the dormant base station has received the signal sent by the user, the base station switches to the wake-up state and turns on the transmitter.

[0073] It is understandable that, since the method for calculating the signal-to-interference-plus-noise ratio of the signal to be detected can be set according to actual needs, the method for determining whether the base station has received the signal sent by the user based on the calculated signal-to-interference-plus-noise ratio needs to be set accordingly to the calculation method. The specific judgment method is not limited in this invention.

[0074] It should be noted that the method provided by this invention can be widely applied to different communication networks (e.g., 3G, 4G, and 5G). In practical applications, specific details need to be adapted to different application backgrounds.

[0075] Furthermore, it is understood that after waking up the base station from its dormant state using the method steps provided by this invention, the base station can also be switched back to a dormant state. The specific switching method can be adjusted according to actual needs, and this invention does not limit it.

[0076] The dormant base station wake-up method provided by this invention, compared to the scheme that determines the presence of a user signal by judging whether the signal exceeds a threshold based on the magnitude of the received signal, identifies the signal-to-interference-plus-noise ratio of the signal detected by the base station. This reduces the impact of interference and noise on the identification results, accurately distinguishing between fixed-amplitude interference and user-sent signals, effectively improving the accuracy of judgment, reducing false wake-ups, and further saving base station energy consumption. Furthermore, it can promptly wake up the dormant base station when a user-sent signal is detected, ensuring it is activated immediately upon arrival. This guarantees that the base station is pre-awakened when it needs to provide service, avoiding unnecessary consequences in emergency situations where the base station cannot provide normal service to users.

[0077] Furthermore, in one embodiment, according to the dormant base station wake-up method provided by the present invention, determining that the base station has received a signal sent by a user based on the signal-to-interference-plus-noise ratio of the signal to be detected, and switching the base station to a wake-up state, specifically includes:

[0078] Based on the signal to be detected, a target symbol set is determined according to a preset power threshold; wherein the power of the target symbols in the target symbol set is greater than the preset power threshold;

[0079] Based on the target symbol set and the signal-to-interference-plus-noise ratio of the signal to be detected, it is determined that the base station has received a signal sent by the user, and the base station is switched to the wake-up state.

[0080] Optionally, based on the signal-to-interference-plus-noise ratio of the signal to be detected, the base station determines that it has received a signal sent by the user, and switches to the wake-up state. This specifically includes:

[0081] A preset power threshold is set in advance. After acquiring the signal to be detected, the signal to be detected is compared with the preset power threshold using the symbol as the detection unit. Symbols whose power is greater than the preset power threshold are selected as target symbols, and the set of target symbols is determined as the target symbol set.

[0082] It should be noted that the specific value of the preset power threshold can be set according to the actual situation, and this invention does not limit it. In addition, the corresponding duration of the signal to be detected can also be set according to preset rules (for example, setting the unit time length as the monitoring period, or determining the corresponding time period of the signal to be detected based on the target symbol after determining that a target symbol exists). The specific setting method can be adjusted according to the actual situation, and this invention does not limit it.

[0083] Furthermore, it is understandable that the preset power threshold and the length of the signal to be detected affect the number of target symbols in the target symbol set, and the target symbol set may be an empty set.

[0084] The determined target symbol set and the signal-to-interference-plus-noise ratio of the signal to be detected are used as the basis for determining whether the base station has received the signal sent by the user. If it is determined that the dormant base station has received the signal sent by the user, the base station switches from the current dormant state to the awake state.

[0085] It should be noted that, due to the differences in characteristics between the user-sent signal and fixed interference and random interference (e.g., signal periodicity, signal power, etc.), the number of target symbols in the target symbol set, and the correlation between target symbols, etc., can all be used as the basis for determining whether the base station has received the user-sent signal. The specific judgment method can be set according to the actual situation, and this invention does not limit it.

[0086] The dormant base station wake-up method provided by this invention identifies the signal-to-interference-plus-noise ratio (SNR) of the signal detected by the base station, reducing the impact of interference and noise on the identification results. By combining the number of target symbols in the target symbol set and the correlation between target symbols, it comprehensively determines whether the dormant base station has received a signal sent by the user. Compared to methods that solely use power or solely use the SNR for judgment, based on information from the target symbol set, it can further determine whether the source of the signal corresponding to high power is accidental interference. This improves the accuracy of the base station in identifying signals sent by users, reduces false wake-ups or failures to wake up, and further saves the energy consumption of the base station.

[0087] Further, in one embodiment, according to the dormant base station wake-up method provided by the present invention, based on the target symbol set and the signal-to-interference-plus-noise ratio of the signal to be detected, determining that the base station has received a signal sent by the user, and switching the base station to a wake-up state, specifically includes:

[0088] If it is determined that the signal-to-interference-plus-noise ratio is greater than a preset signal-to-noise ratio threshold, and it is determined that the target symbol is periodic, then it is determined that the base station has received a signal sent by the user, and the base station is switched to the wake-up state.

[0089] Optionally, uplink signals under normal user access conditions are generally periodic. Taking the SRS signal (Sounding Reference Signal) as an example, the SRS is sent once every 40ms or 80ms. The duration of each transmission is one symbol (a symbol in the wireless frame structure). In terms of time, it is about 35.7us for 5G and about 71.4us for 4G.

[0090] Based on the target symbol set and the signal-to-interference-plus-noise ratio of the signal to be detected, the base station determines that it has received a signal sent by the user from the dormant base station, and then switches to the wake-up state. Specifically, this includes:

[0091] The calculated signal-to-interference-plus-noise ratio of the signal to be detected is compared with a preset signal-to-noise ratio threshold to determine that the signal-to-interference-plus-noise ratio is greater than the preset signal-to-noise ratio threshold.

[0092] It should be noted that the specific value of the preset signal-to-noise ratio threshold can be adjusted according to the actual situation, and this invention does not limit it.

[0093] It is understandable that external environmental factors and equipment conditions can cause interference of a fixed amplitude during signal detection. If this interference is present and falls within the base station's receiving frequency band, the base station, when calculating power using conventional methods, will display a very high power level. If the system judges a received power level as indicative of a service signal, this could be mistakenly interpreted as a genuine service signal when the actual signal is interference, leading to an incorrect assessment and false wake-up of the base station.

[0094] When using the method provided by this invention for detection, when fixed interference occurs, the detected signal and noise floor are at the same level, that is, the power results corresponding to the symbols are all high, but the calculated signal-to-interference-plus-noise ratio is approximately 0. By comparing the signal-to-interference-plus-noise ratio with a preset signal-to-noise ratio threshold, it is possible to identify whether the detected signal is fixed-amplitude interference or a user signal.

[0095] Based on the target symbol set, the number of target symbols in the set, and the correlation between target symbols, it is determined whether the target symbols have periodicity.

[0096] It is understandable that normal user signals exhibit periodicity over a certain period of time (e.g., on the order of 100ms), while occasional interference signals do not. By determining whether the target symbol has periodicity, it is possible to effectively identify whether the received signal is occasional interference.

[0097] It should be noted that the time period of the user signal is related to the network background of the application and the specific type of the signal. The type of user signal to be detected, the duration of the signal to be detected, and the specific method for determining whether the signal has periodicity (e.g., determining the number of symbols between each signal, or determining whether the corresponding symbol appears at a preset symbol position) can be set according to the actual situation, and this invention does not limit them.

[0098] When it is determined that the signal-to-interference-plus-noise ratio is greater than the preset signal-to-noise ratio threshold and whether the target symbol is periodic, the dormant base station is considered to have received the signal sent by the user, and the base station switches to the wake-up state.

[0099] The dormant base station wake-up method provided by this invention differs from existing technologies that rely on special wake-up signals sent by user equipment or require complex algorithms implemented by the BBU to accurately identify which RRUs (Remote Radio Units) need to be woken up. This invention can effectively identify whether the received signal is intermittent interference, fixed interference, or a user signal simply by determining whether the signal-to-interference-plus-noise ratio (SNR) exceeds a preset SNR threshold, combined with a method to determine whether the target symbol has periodicity. This invention requires no adaptation or modification to the BBU or user equipment; without relying on other modules, it can effectively identify user equipment and wake up the base station solely through the base station's own detection mechanism, significantly reducing the complexity of the method and achieving base station wake-up at minimal cost.

[0100] Furthermore, in one embodiment, according to the dormant base station wake-up method provided by the present invention, determining that the target symbol has periodicity specifically includes:

[0101] Based on the target symbol set, determine the number of spacing symbols between the target symbols;

[0102] Based on the number of interval symbols between the target symbols, it is determined that the target symbols have periodicity.

[0103] Optionally, based on the target symbol set, determine that the target symbols have periodicity, specifically including:

[0104] Based on the target symbol set, determine the number of spacer symbols between the target symbols.

[0105] Based on the number of interval symbols between target symbols, it is determined that the target symbols have periodicity.

[0106] Figure 3 This is a schematic diagram of user signal symbol power distribution provided by the present invention. Figure 4 This is a schematic diagram of the power distribution of intermittent interference symbols provided by the present invention, such as... Figure 3 and Figure 4 As shown, it can be understood that when the target symbol appears continuously, it can be considered that there is occasional interference, and when the target symbol appears periodically, it can be considered that there is user signal.

[0107] For example, using a 160ms period to determine the signal to be detected, within one period, check if there are multiple low-noise power symbols between the power of two high-power symbols (i.e., the target symbol). This method can identify whether the high power of one or multiple symbols is caused by sporadic interference.

[0108] It should be noted that the specific duration of the signal to be detected can be set according to the actual situation (for example, it can also be set to 80ms, 90ms, etc.), and the present invention does not limit it in this regard.

[0109] The dormant base station wake-up method provided by this invention utilizes the periodicity of signals sent by users and identifies whether the detected signal is a user signal by the number of interval symbols between target symbols, which can effectively eliminate the influence of occasional interference on the judgment result.

[0110] Furthermore, in one embodiment, according to the dormant base station wake-up method provided by the present invention, the base station receives a signal to be detected in a dormant state and determines the signal-to-interference-plus-noise ratio of the signal to be detected, specifically including:

[0111] Based on the signal to be detected received by the base station in sleep mode, the power corresponding to the symbol in the signal to be detected is determined;

[0112] Based on the power corresponding to the symbol, the signal-to-interference-plus-noise ratio of the signal to be detected is determined.

[0113] Optional, Figure 5 This is a schematic diagram illustrating the accuracy of receiver statistical uplink power calculation provided by existing technology. Figure 6 This is a schematic diagram illustrating the accuracy of receiver statistical uplink power calculation provided by the present invention, as shown below. Figure 5 and Figure 6 As shown, when a user only accesses the network without any data traffic, the user equipment will only emit a very small number of symbols, such as SRS and PRACH (Physical Random Access Channel), to maintain the link and synchronization with the base station. The power of these SRS and PRACH symbols is normal, and the signal-to-noise ratio is sufficient.

[0114] However, existing user signal detection methods can only determine whether a signal exceeds a threshold by the magnitude of the received signal. When the user signal is relatively small and the duration is short, the channel power becomes insignificant after being averaged over a 10ms period, making it impossible to effectively identify the user signal.

[0115] For example, if only one power symbol is detected, the power of this symbol will be averaged over 10ms, and the signal amplitude will be averaged over 35us / 10000us. It is basically impossible to distinguish whether the power counted over these 10ms includes the service symbol or not by the amplitude.

[0116] The base station receives the signal to be detected in sleep mode and determines the signal-to-interference-plus-noise ratio of the signal to be detected, specifically including:

[0117] The base station receives the signal to be detected while in sleep mode and determines the power corresponding to each symbol in the signal. Based on the power corresponding to each symbol, the signal-to-interference-plus-noise ratio of the signal to be detected is determined.

[0118] Understandably, the noise floor power of the signal to be detected over a certain period can be determined, and the average power of the target symbol can be used as the power of the useful signal to calculate the signal-to-interference-plus-noise ratio. In addition, the signal-to-interference-plus-noise ratio can be detected in real time for each symbol or for a short, preset duration. The specific calculation method can be set according to the actual situation, and this invention does not limit it.

[0119] The dormant base station wake-up method provided by this invention detects power in units of symbols and calculates the signal-to-interference-plus-noise ratio. Compared with the method of calculating the average value over a period of time in the prior art, it can effectively identify user signals with small traffic volume and short duration, improve the accuracy of user signal identification, and reduce the occurrence of false wake-ups.

[0120] Furthermore, in one embodiment, according to the dormant base station wake-up method provided by the present invention, determining the signal-to-interference-plus-noise ratio of the signal to be detected based on the power corresponding to the symbol specifically includes:

[0121] Based on the power corresponding to the symbols, a first target symbol and a second target symbol are determined; wherein, the first target symbol is the symbol with the highest power in the signal to be detected; and the second target symbol is the symbol with the lowest power in the signal to be detected.

[0122] Based on the power of the first target symbol and the power of the second target symbol, the signal-to-interference-plus-noise ratio of the signal to be detected is determined.

[0123] Optionally, after determining the signal to be detected, the power can be detected on a symbol-by-symbol basis. The symbol with the highest power in the signal to be detected is designated as the first target symbol, and the symbol with the lowest power in the detected signal is designated as the second target symbol. The difference between the power of the first target symbol and the power of the second target symbol is determined as the signal-to-interference-plus-noise ratio of the signal to be detected.

[0124] For example, taking 5G as an example, for a user signal with only one symbol, a single radio frame (10ms) can yield 280 results using the new method (compared to 140 results for 4G). One symbol's power represents the actual user signal power, while the other 279 symbols detect the noise floor. Subtracting the minimum symbol power (noise floor power) from the maximum symbol power (user signal power) among these 280 results gives the signal-to-noise ratio (SNR) of the user signal. When the SNR of the detected user signal is greater than a preset SNR threshold, it is considered that a user signal has been detected.

[0125] It should be noted that the above method for calculating the signal-to-interference-plus-noise ratio is only used as a specific example to illustrate the present invention. In practical applications, the specific values ​​of the detection signal duration and the preset signal-to-noise ratio threshold can be set according to actual needs, and the present invention does not limit them.

[0126] The dormant base station wake-up method provided by this invention detects power on a symbol-by-symbol basis and calculates the power difference between the symbol with the highest power and the symbol with the lowest power in the detected signal. This difference is used as the signal-to-interference-plus-noise ratio. Compared with the existing method of calculating the average value over a period of time, this method can effectively identify user signals with low traffic volume and short duration, improve the accuracy and sensitivity of user signal identification, reduce false wake-ups, and ensure that dormant base stations can be woken up in real time.

[0127] Furthermore, in one embodiment, according to the dormant base station wake-up method provided by the present invention, the signal sent by the user includes any one or more of the following: uplink probe reference signal, physical uplink control channel signal, uplink physical shared channel signal, and physical random access channel signal.

[0128] Optionally, during normal access, mobile users will send normal uplink service signals to the base station, such as SRS (Sounding Reference Signal), PUCCH (Physical Uplink Control Channel), PUSCH (Physical Uplink Shared Channel), and PRACH (Physical Random Access Channel). The period of these signals changes as the user terminal changes with the service, but as long as the user is in the access state, these uplink signals will be sent out periodically.

[0129] When identifying signals sent by users, this invention can selectively identify any one or more of the following: uplink probe reference signal, physical uplink control channel signal, uplink physical shared channel signal, and physical random access channel signal.

[0130] It should be noted that the more signals selected during detection, the higher the accuracy of recognition; however, this also increases the computational resources and recognition time required. The appropriate signal type and quantity can be selected according to actual needs, and this invention does not impose any limitations on this.

[0131] It is understood that the transmission period of different signals may vary. When performing periodic detection, the scheme can be adaptively adjusted according to the actual detected signal. This invention does not limit this.

[0132] The dormant base station wake-up method provided by this invention selectively identifies one or more of the following: uplink probe reference signal, physical uplink control channel signal, uplink physical shared channel signal, and physical random access channel signal, to identify signals transmitted by users. Without requiring any adaptation or modification to the BBU or user equipment, and without relying on other modules, the base station's own detection mechanism can effectively identify user equipment and thus wake up the base station, significantly reducing the complexity of the method and achieving the goal of base station wake-up with minimal cost.

[0133] Figure 7 This is a schematic diagram of the structure of the multidimensional data report generation system provided by the present invention, as shown below. Figure 7 As shown, the present invention also provides a dormant base station wake-up system, including: a signal receiving and detection unit 710 and a base station state switching unit 720;

[0134] The signal receiving and detection unit 710 is used to receive the signal to be detected in the base station in a sleep state and determine the signal-to-interference-plus-noise ratio of the signal to be detected; wherein, the base station receiver is turned on in the sleep state;

[0135] The base station state switching unit 720 is used to determine, based on the signal-to-interference-plus-noise ratio of the signal to be detected, that the base station has received a signal sent by the user, and to switch the base station to a wake-up state.

[0136] Optionally, the transmitter in a wireless base station consumes the most power, and base station sleep mode primarily relies on shutting down the transmitter to achieve energy savings. In this solution, the base station transmitter is off and the receiver is on in sleep mode. In wake-up mode, both the base station transmitter and receiver are on.

[0137] Figure 2 This is a schematic diagram of the base station receiving user signals from a neighboring base station provided by the present invention, as shown below. Figure 2 As shown, when a mobile user approaches this base station from the service area of ​​an adjacent base station and enters the overlapping area of ​​the coverage of the two base stations, this base station can receive the uplink service signal sent by the user to the adjacent base station.

[0138] In order to enable the base station to wake up autonomously, the base station receiver receives signals in the base station's sleep state and uses them as the signals to be detected. The signals to be detected are detected in real time to determine whether a user is approaching the base station.

[0139] The signal receiving and detection unit 710 is used to receive the signal to be detected when the base station is in sleep mode and to calculate the signal-to-interference-plus-noise ratio of the signal to be detected.

[0140] It should be noted that conventional base station power statistics methods are used to reflect the amount of uplink traffic, typically measuring the power of all uplink channels in 10ms increments. The Signal to Interference plus Noise Ratio (SINR) refers to the ratio of the strength of the received useful signal to the strength of the received interference signal (noise and interference). In other words, it calculates the difference between the average power of the useful signal and the noise and interference signal (noise floor) within a given time unit.

[0141] However, since the base station is in sleep mode, the received signals may include those from users, which have a short duration. After being averaged over a unit of time, the power becomes insignificant, making it difficult to determine whether the signal to be detected includes signals sent by users.

[0142] In this invention, the method for calculating the signal-to-interference-plus-noise ratio of the signal to be detected can be a preset unit duration (short duration). The ratio of the strength of the useful signal to the strength of the received interference signal (noise and interference) corresponding to this unit duration can be calculated. Because the preset unit duration is short, it avoids the problem that the signal strength (power) after averaging is not significant, resulting in an excessively low signal-to-noise ratio that is difficult to judge. It should be noted that the specific value of the preset unit duration can be set according to actual conditions, and this invention does not limit it.

[0143] Secondly, by using real-time detection, the power of a signal with minimal signal change over a certain period can be pre-selected as the power corresponding to the intensity of the interference signal (noise and interference). Based on this value, the power of the signal to be detected in real time is taken as the power of the useful signal, and the signal-to-noise ratio (SNR) for each symbol can be calculated. Furthermore, by comparing the SNR of each symbol in real time, it can be determined whether it exceeds a preset threshold, thus confirming whether it is a signal sent by the user. It should be noted that the specific value of the preset threshold can be set according to actual conditions, and this invention does not limit it.

[0144] It is understood that the above method for calculating the signal-to-interference-plus-noise ratio of the signal to be detected is only a specific example to illustrate the present invention. In addition, other methods can be used, such as setting a power threshold and using the average power of symbols whose power is greater than the threshold as the useful signal; or determining that a symbol's power is greater than a preset power threshold and calculating the signal-to-noise ratio within a preset symbol range (e.g., the range defined by the five symbols before and after that symbol) centered on that symbol; or selecting the maximum power of the symbol within a preset unit time period as the useful signal to calculate the signal-to-noise ratio. In practical applications of the present invention, the method for calculating the signal-to-noise ratio can be set according to actual needs, and the present invention does not limit this.

[0145] The base station state switching unit 720 is used to determine whether the dormant base station has received the signal sent by the user based on the calculated signal-to-interference-plus-noise ratio of the signal to be detected. If it is determined that the dormant base station has received the signal sent by the user, the base station switches to the wake-up state and turns on the transmitter.

[0146] It is understandable that, since the method for calculating the signal-to-interference-plus-noise ratio of the signal to be detected can be set according to actual needs, the method for determining whether the base station has received the signal sent by the user based on the calculated signal-to-interference-plus-noise ratio needs to be set accordingly to the calculation method. The specific judgment method is not limited in this invention.

[0147] It should be noted that the method provided by this invention can be widely applied to different communication networks (e.g., 3G, 4G, and 5G). In practical applications, specific details need to be adapted to different application backgrounds.

[0148] Furthermore, it is understood that after waking up the base station from its dormant state using the method steps provided by this invention, the base station can also be switched back to a dormant state. The specific switching method can be adjusted according to actual needs, and this invention does not limit it.

[0149] The dormant base station wake-up system provided by this invention, compared to schemes that determine the presence of user signals by judging whether the signal exceeds a threshold based on the magnitude of the received signal, identifies the signal-to-interference-plus-noise ratio of the signal detected by the base station. This reduces the impact of interference and noise on the identification results, accurately distinguishing between fixed-amplitude interference and user-sent signals, effectively improving the accuracy of judgment, reducing false wake-ups, and further saving base station energy consumption. Furthermore, it can promptly wake up the dormant base station when a user-sent signal is detected, ensuring it is activated immediately upon arrival. This guarantees that the base station is pre-awakened when it needs to provide service, avoiding unnecessary consequences in emergency situations where the base station cannot provide normal service to users.

[0150] It should be noted that the dormant base station wake-up system provided by the present invention is used to execute the above-mentioned dormant base station wake-up method, and its specific implementation method is the same as the method implementation method, and will not be repeated here.

[0151] Figure 8 This is a schematic diagram of the physical structure of an electronic device provided by the present invention, such as... Figure 8 As shown, the electronic device may include a processor 810, a communication interface 811, a memory 812, and a bus 813, wherein the processor 810, the communication interface 811, and the memory 812 communicate with each other via the bus 813. The processor 810 can call logic instructions in the memory 812 to execute the following method: a base station receives a signal to be detected in a sleep state, and determines the signal-to-interference-plus-noise ratio (SNR) of the signal to be detected; wherein the base station receiver is turned on in the sleep state; based on the SNR of the signal to be detected, it is determined that the base station has received a signal sent by the user, and the base station is switched to a wake-up state.

[0152] Furthermore, the logical instructions in the aforementioned memory can be implemented as software functional units and sold or used as independent products, and can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer power supply (which may be a personal computer, server, or network power supply, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0153] Furthermore, this invention discloses a computer program product, which includes a computer program stored on a non-transitory computer-readable storage medium. The computer program includes program instructions, and when the program instructions are executed by a computer, the computer can execute the dormant base station wake-up method provided in the above-described method embodiments, for example including: the base station receiving a signal to be detected in a dormant state, determining the signal-to-interference-plus-noise ratio of the signal to be detected; wherein, the base station receiver is turned on in the dormant state; based on the signal-to-interference-plus-noise ratio of the signal to be detected, determining that the base station has received a signal sent by a user, and switching the base station to a wake-up state.

[0154] On the other hand, the present invention also provides a non-transitory computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements the dormant base station wake-up method provided in the above embodiments, including, for example,: the base station receiving a signal to be detected in a dormant state, determining the signal-to-interference-plus-noise ratio of the signal to be detected; wherein, the base station receiver is turned on in the dormant state; based on the signal-to-interference-plus-noise ratio of the signal to be detected, determining that the base station has received a signal sent by a user, and switching the base station to a wake-up state.

[0155] The system embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0156] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., including several instructions to cause a computer power supply (which may be a personal computer, server, or network power supply, etc.) to execute the methods described in various embodiments or some parts of the embodiments.

[0157] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for waking up a dormant base station, characterized in that, include: The base station receives a signal to be detected in a sleep state and determines the signal-to-interference-plus-noise ratio (SNR) of the signal to be detected; wherein, the base station receiver is turned on in the sleep state; the SNR of the signal to be detected is the difference between the power of a first target symbol and the power of a second target symbol; the first target symbol is the symbol with the highest power in the signal to be detected; the second target symbol is the symbol with the lowest power in the signal to be detected; When the signal-to-interference-plus-noise ratio of the signal to be detected is greater than a preset signal-to-noise ratio threshold and the target symbol is periodic, it is determined that the base station has received a signal sent by the user, and the base station is switched to a wake-up state. The target symbol is a symbol in the signal to be detected whose power is greater than a preset power threshold.

2. The method for waking up a dormant base station according to claim 1, characterized in that, Determining that the target symbol has periodicity specifically includes: Based on the target symbol set, determine the number of spacing symbols between the target symbols; the target symbol set is a collection of target symbols. Based on the number of interval symbols between the target symbols, it is determined that the target symbols have periodicity.

3. The method for waking up a dormant base station according to any one of claims 1-2, characterized in that, The base station receives the signal to be detected in a sleep state and determines the signal-to-interference-plus-noise ratio of the signal to be detected, specifically including: Based on the signal to be detected received by the base station in sleep mode, the power corresponding to the symbol in the signal to be detected is determined; Based on the power corresponding to the symbol, the signal-to-interference-plus-noise ratio of the signal to be detected is determined.

4. The method for waking up a dormant base station according to any one of claims 1-2, characterized in that, The signals sent by the user include any one or more of the following: uplink probe reference signal, physical uplink control channel signal, uplink physical shared channel signal, and physical random access channel signal.

5. A dormant base station wake-up system, characterized in that, include: Signal receiving and detection unit and base station status switching unit; The signal receiving and detection unit is used to receive a signal to be detected in a base station in a sleep state and determine the signal-to-interference-plus-noise ratio of the signal to be detected; wherein, the base station receiver is turned on in the sleep state; the signal-to-interference-plus-noise ratio of the signal to be detected is determined based on the power of a first target symbol and the power of a second target symbol; the first target symbol is the symbol with the highest power in the signal to be detected; the second target symbol is the symbol with the lowest power in the signal to be detected; The base station state switching unit is used to determine that the base station has received a signal sent by the user when the signal-to-interference-plus-noise ratio of the signal to be detected is greater than a preset signal-to-noise ratio threshold and the target symbol is periodic, and then switches the base station to a wake-up state, wherein the target symbol is a symbol in the signal to be detected whose power is greater than a preset power threshold.

6. An electronic device, characterized in that, The system includes a memory and a processor, which communicate with each other via a bus; the memory stores program instructions that can be executed by the processor, and the processor can execute the hibernation base station wake-up method as described in any one of claims 1 to 4 by calling the program instructions.

7. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that, When executed by a processor, the computer program implements the method for waking up a dormant base station as described in any one of claims 1 to 4.

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