CN110381536B - A load balancing method and system based on LWIP architecture - Google Patents

Abstract

The embodiment of the invention provides a load balancing method and system based on L WIP architecture, the method comprises the steps of obtaining the signal-to-interference-and-noise ratio of user equipment at the current moment, calculating and obtaining the qualification rate of the signal-to-interference-and-noise ratio according to the signal-to-interference-and-noise ratio, obtaining the channel utilization rate and the time delay parameter of a cell to which the user equipment belongs at the current moment, calculating and obtaining a multi-parameter combined influence threshold according to the qualification rate of the signal-to-interference-and-noise ratio, the channel utilization rate and the time delay parameter, calculating and obtaining a preset dynamic threshold according to the multi-parameter combined influence threshold and an initial fixed threshold, judging that the cell to which the user equipment belongs currently is in an overload state according to the preset dynamic threshold, and switching the user equipment to an adjacent cell when a switching condition meets a preset condition.

Description

A load balancing method and system based on LWIP architecture

technical field

The present invention relates to the field of communication technologies, and in particular, to a load balancing method and system based on an LWIP architecture.

Background technique

In today's explosive growth of global data traffic, load balancing is a problem that any network architecture needs to consider. Therefore, LWIP (LTE WLAN Radio Level Integration with IPsec Tunnel) also faces some load balancing problems. In the growth of data traffic, the proportion of mobile data is more and more important, and user mobility is a very important characteristic attribute.

The structure of LWIP is very different from that of LWA. Most of LWA's offloading strategies are used for data offloading or aggregation at the PDCP layer, while LWIP data is offloaded and aggregated at its custom LAL layer. At the same time, because LWIP does not support reordering Therefore, it cannot be transmitted and aggregated through LTE and WLAN separately, and only a single bearer can be supported. This method is to transmit data completely through the WLAN link or the LTE link. It can be seen that this transmission method itself has poor load balancing capability.

In the existing research, the research on LWIP load balancing is almost blank, and due to the different architectures and bearing methods of LWIP and LWA, the load balancing method of LWA cannot be directly applied, so the research on LWIP urgently needs to be in-depth.

SUMMARY OF THE INVENTION

In order to solve the problems in the prior art that the LWIP architecture cannot apply the LWA load balancing method, and the LWIP architecture lacks load balancing means, a load balancing method and system based on the LWIP architecture is proposed.

In a first aspect, an embodiment of the present invention provides a load balancing method based on an LWIP architecture, including:

Acquire the signal-to-interference-noise ratio of the user equipment at the current moment, and calculate and obtain the signal-to-interference-noise ratio pass rate according to the signal-to-interference and noise ratio;

Acquire the channel utilization rate and delay parameters of the cell to which the user equipment belongs at the current moment, and calculate and obtain the multi-parameter joint influence threshold according to the signal-to-interference-noise ratio pass rate, channel utilization rate, and delay parameters;

According to the multi-parameter joint influence threshold and the initial fixed threshold, a preset dynamic threshold is calculated and obtained, and it is determined according to the preset dynamic threshold that the cell to which the user equipment currently belongs is in an overloaded state, and the handover condition satisfies the preset condition, then the The user equipment is handed over to a neighboring cell.

Wherein, before the step of acquiring the signal-to-interference-noise ratio of the user equipment at the current moment, the step further includes: sending an IP probe packet to the user equipment through a WLAN path; receiving feedback information returned by the user equipment, if the feedback information If the preset conditions are met, data transmission is performed through the WLAN path.

Wherein, the step of if the feedback information satisfies a preset condition specifically includes: if it is determined that in the feedback information, the number of lost probes is less than the preset maximum allowable number of lost probes, and the average detection delay is less than the threshold allowable maximum loss If the time delay and the average detection rate are greater than the threshold allowable maximum rate, it is determined that the feedback information satisfies the preset condition.

Wherein, the step of obtaining the signal-to-interference-noise ratio of the user equipment at the current moment, and calculating and obtaining the signal-to-interference-noise ratio pass rate according to the signal-to-interference noise ratio, specifically includes:

通过公式：Obtain the signal-to-interference and noise ratio of the cell to which the user equipment belongs at the current moment

Via the formula:

Calculate the signal-to-interference-to-noise ratio qualified rate, where PRS is the signal-to-interference-to-noise ratio qualified rate, and SINR _max is a preset parameter.

Wherein, the step of calculating and obtaining the multi-parameter joint influence threshold value according to the signal-to-interference-noise ratio pass rate, channel utilization rate and time delay parameter specifically includes:

According to the formula:

Th _mix =α·PRS+β·CUR+χ·PRD

Calculate the multi-parameter joint impact threshold, where Th _mix is the multi-parameter joint impact threshold, PRS is the signal-to-interference-noise ratio pass rate, CUR is the channel utilization rate, PRD is the delay parameter, α, β and χ are preset parameters , and α+β+χ=1, α>β>>χ.

Wherein, the step of calculating and obtaining a preset dynamic threshold according to the multi-parameter joint influence threshold and the initial fixed threshold specifically includes:

According to the formula:

Th _dy =max{Th _fix ,Th _mix }

Calculate and obtain a preset dynamic threshold, where Th _dy is a preset dynamic threshold, Th _fix is an initial fixed threshold, and Th _mix is a multi-parameter joint influence threshold.

The step of determining, according to the preset dynamic threshold, that the cell to which the user equipment currently belongs is in an overloaded state, and the handover condition satisfies the preset condition, the step of switching the user equipment to a neighboring cell specifically includes: according to the preset dynamic threshold. The preset dynamic threshold determines that when the cell to which the user equipment currently belongs is in an overloaded state, and when the signal quality of the neighboring cell and the paranoia of the neighboring cell meet the preset conditions, the user equipment is switched to the neighboring cell.

In a second aspect, an embodiment of the present invention provides a load balancing system based on an LWIP architecture, including:

a signal-to-interference-to-noise ratio acquisition module, configured to obtain the signal-to-interference-to-noise ratio of the user equipment at the current moment, and to calculate and obtain the signal-to-interference-to-noise ratio qualified rate according to the signal-to-interference-to-noise ratio;

The multi-parameter joint impact threshold calculation module is used to obtain the channel utilization and delay parameters of the cell to which the user equipment belongs at the current moment, and calculates and obtains the multi-parameter joint according to the signal-to-interference and noise ratio pass rate, channel utilization and delay parameters. impact threshold;

The load balancing module is configured to calculate and obtain a preset dynamic threshold value according to the multi-parameter joint influence threshold value and the initial fixed threshold value, and determine according to the preset dynamic threshold value that the cell to which the user equipment currently belongs is in an overload state, and the handover condition satisfies the preset value. If conditions are set, the user equipment is handed over to a neighboring cell.

In a third aspect, an embodiment of the present invention provides an electronic device, including a memory, a processor, and a computer program stored in the memory and running on the processor, where the processor implements the first aspect when executing the program The steps of the provided load balancing method based on the LWIP architecture.

In a fourth aspect, an embodiment of the present invention provides a non-transitory computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, implements the LWIP architecture-based load balancing provided in the first aspect above steps of the method.

The load balancing method and system based on the LWIP architecture provided by the embodiments of the present invention propose appropriate network configuration and management, can estimate the load state of the current overloaded cell and the candidate target cell, and decide the handover of the UE, so as to effectively distribute the load .

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative efforts.

1 is a schematic flowchart of a load balancing method based on an LWIP architecture provided by an embodiment of the present invention;

FIG. 2 is a schematic diagram of A3 event triggering in a load balancing method based on an LWIP architecture provided by an embodiment of the present invention;

3 is a schematic diagram of A5 event triggering in the load balancing method based on the LWIP architecture provided by an embodiment of the present invention;

4 is a schematic structural diagram of a load balancing system based on an LWIP architecture provided by an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Referring to FIG. 1, FIG. 1 is a schematic flowchart of a load balancing method based on an LWIP architecture provided by an embodiment of the present invention. The provided method includes:

S1, obtain the signal-to-interference-noise ratio of the user equipment at the current moment, and calculate and obtain the signal-to-interference-noise ratio pass rate according to the signal-to-interference and noise ratio;

S2, obtain the channel utilization and delay parameters of the cell to which the user equipment belongs at the current moment, and calculate and obtain the multi-parameter joint influence threshold according to the signal-to-interference and noise ratio pass rate, channel utilization and delay parameters;

S3: Calculate and obtain a preset dynamic threshold according to the multi-parameter joint influence threshold and the initial fixed threshold, and determine, according to the preset dynamic threshold, that the cell to which the user equipment currently belongs is in an overloaded state, and the handover condition satisfies the preset condition, then The user equipment is handed over to a neighboring cell.

Specifically, in this embodiment, small cells can be densely deployed due to the characteristics of LWIP, which can significantly increase network capacity. Therefore, a mobile load balancing solution is proposed to supplement the mobility of users and the coverage of small cells.

It can be seen from the WLAN boost scheme that the LTE base station can provide the most suitable access scheme for each user in the initial stage, but when all users have completed the access and moved in the small cell, some cells will be overloaded and some cells will be lightly loaded. This leads to incomplete resource utilization. In this embodiment, the reference index considers the Pass Ratio of Signal to Interference plus Noise Ratio (PRS) and the Channel Utilization Ratio (CUR) of the cell. Pass Ratio of Delay (PRD).

By obtaining the time t in cell i within a given duration T, the signal-to-interference and noise ratio of the user equipment, according to the signal-to-interference and noise ratio of the user equipment, and then calculate the pass rate of the signal-to-interference and noise ratio of the cell, on the other hand, according to The channel utilization rate and the delay pass rate of the cell are calculated to obtain the multi-parameter joint influence threshold Th _mix .

A threshold is introduced to determine whether the overload is overloaded. In order to fully balance the network performance, the fixed threshold is not applicable to the scenario in this embodiment. Therefore, a dynamic threshold is proposed in this embodiment, and the dynamic threshold is calculated according to the joint influence threshold of multiple parameters and the initial fixed threshold. If the cell is in an overload state, it is judged whether the adjacent cell meets the handover condition. When the adjacent cell meets the handover condition, the user equipment will be handed over from the current cell to the next cell. Neighboring neighborhood.

Through this method, suitable network configuration and management are proposed, which can estimate the load state of the current overloaded cell and the candidate target cell, and decide the handover of the UE, so as to effectively distribute the load.

Based on the above embodiment, before the step of acquiring the signal-to-interference-noise ratio of the user equipment at the current moment, the step further includes: sending an IP probe packet to the user equipment through a WLAN path; receiving feedback information returned by the user equipment , and if the feedback information satisfies the preset condition, data transmission is performed through the WLAN path.

The step of if the feedback information satisfies a preset condition specifically includes: if it is judged that in the feedback information, the number of lost probes is less than the preset threshold allowable maximum number of lost probes, and the average detection delay is less than the threshold allowable maximum delay and the average detection rate is greater than the threshold allowable maximum rate, it is determined that the feedback information satisfies the preset condition.

Specifically, in a heterogeneous network with LTE as the master node and WLAN as the slave node, due to the limitations of WLAN, such as the capture effect (a phenomenon that occurs when the two signals have almost equal amplitudes at the receiving end. Relatively A small difference in amplitude will cause the stronger of the two signals to dominate, displacing the other at the demodulation output). This will cause UL interference to different APs with similar proximity to the UE, resulting in poor service quality. In contrast, LTE systems with centralized scheduling access do not have the problem of UL collisions. The WLAN Boost transmission scheme utilizes LTE access to complete UL, while allowing a large number of existing WLAN APs to supplement LTE capacity, thereby achieving the best performance in both uplink and downlink.

Because the UE tends to connect to the WLAN path, if congestion is detected in the WLAN path, it switches to the LTE path, and when congestion relief is detected, the path switches back to WLAN. When initiating a connection request, the LTE base station will determine the best path for the UE to connect. This is achieved by using the relevant threshold value to determine, that is, if a power signal greater than the threshold value can be received under the WLAN path, the WLAN path can be connected, otherwise the service is provided through the LTE path.

Radio link statistics can be obtained from the MAC of the LTE eNB for the LTE path, but such statistics are not available from the WLAN AP, probing the WLAN path is used to evaluate its performance and generate the necessary statistics. The IP congestion detection in LWIP is specifically completed through the cooperation of the RAN connection manager (RCM) on the LTE base station side and the UE connection manager (UCM) on the UE side. In the initial stage, to probe the WLAN path, the RCM sends an IP probe packet of size s to user u via the WLAN path x at the rate r within t seconds. 1. Probe Lost Fraction, 2. Average Probe Latency, and 3. Average Probe Throughput are collected at UCM. When the UCM receives the last probe, it sends a feedback ACK to the RCM containing the collected information. At this time, if the RCM receives feedback, it will pass the judgment:

Missing Probes < Threshold Maximum Allowed Missing

Average detection delay < threshold allowable maximum delay

Average Probe Rate > Threshold Allowed Minimum Rate

When the three conditions are better than the threshold, the WLAN path is used for transmission; otherwise, the LTE transmission is used. At the same time, no additional user switching occurs within a switching time, so as to ensure that no large-scale switching occurs and to avoid instability problems.

This scheme solves the WLAN cell contention problem by routing uplink traffic on LTE, thereby achieving optimal use of unlicensed frequency bands for downlink. This scheme can improve the performance of LWIP heterogeneous network to a certain extent, but due to the fixed threshold and user mobility, this scheme still has some shortcomings, so the mobile load balancing scheme is used for joint optimization to achieve the best performance.

On the basis of the above embodiment, the step of obtaining the signal-to-interference-noise ratio of the user equipment at the current moment, and calculating and obtaining the signal-to-interference-noise ratio qualified rate according to the signal-to-interference and noise ratio, specifically includes:

通过公式：Obtain the signal-to-interference and noise ratio of the cell to which the user equipment belongs at the current moment

Via the formula:

Calculate the signal-to-interference-to-noise ratio qualified rate, where PRS is the signal-to-interference-to-noise ratio qualified rate, and SINR _max is a preset parameter.

The step of calculating and obtaining the multi-parameter joint influence threshold according to the signal-to-interference-noise ratio pass rate, channel utilization rate and time delay parameter specifically includes:

According to the formula:

Th _mix =α·PRS+β·CUR+χ·PRD

Calculate the multi-parameter joint impact threshold, where Th _mix is the multi-parameter joint impact threshold, PRS is the signal-to-interference-noise ratio pass rate, CUR is the channel utilization rate, PRD is the delay parameter, α, β and χ are preset parameters , and α+β+ _χ =1, α>β>>χ.

The step of calculating and obtaining a preset dynamic threshold according to the multi-parameter joint influence threshold and the initial fixed threshold specifically includes:

According to the formula:

Th _dy =max{Th _fix ,Th _mix }

Calculate and obtain a preset dynamic threshold, where Th _dy is a preset dynamic threshold, Th _fix is an initial fixed threshold, and Th _mix is a multi-parameter joint influence threshold.

Specifically, for a given duration T, the signal-to-interference-to-noise ratio pass rate PRS at time t in cell i is expressed as:

是用户在小区i中τ时刻的信干噪比，SINR_max设为较高定值，当

大于SINR_max时认为用户已经达到最佳性能，因此当

大于SINR_max时令

等于SINR_max，公式写成：

is the signal-to-interference-noise ratio of the user at time τ in cell i, SINR _max is set to a higher fixed value, when

When it is greater than SINR _max , it is considered that the user has reached the best performance, so when

greater than SINR _max

Equal to SINR _max , the formula is written as:

In the formula, PRS is the signal-to-interference-noise ratio pass rate, and SINR _max is a preset parameter.

CUR is expressed as:

是在τ时刻利用的信道数。当CUR小于1，说明小区中还有空闲信道，当CUR等于1，则可以认为信道完全被占用，小区陷入过载。where _Nc is the total number of channels available in cell i,

is the number of channels utilized at time τ. When the CUR is less than 1, it means that there is an idle channel in the cell. When the CUR is equal to 1, it can be considered that the channel is completely occupied and the cell is overloaded.

PRD is expressed as:

表示为是用户在小区i中τ时刻的时延，Delay_max是用户允许最大时延，当用户时延大于Delay_max时，令

等于Delay_max，公式可以重写为：

It is expressed as the user's delay at time τ in cell i, and Delay _max is the maximum delay allowed by the user. When the user's delay is greater than Delay _max , let

Equal to Delay _max , the formula can be rewritten as:

When the PRD is 1, the user experience is lower, and the smaller the PRD, the smaller the user delay. The solution is to transfer the load to an adjacent light-loaded cell for an overloaded cell. In the scenario of the embodiment of the present invention, the network is balanced by allocating a connection target of cell edge users.

In order to fully balance the network performance, the fixed threshold is not applicable to the scenario in the present invention, so the dynamic threshold Th _dy is proposed in the present invention.

Th _dy =max{Th _fix ,Th _mix }

In the formula, Th _fix is the initial fixed threshold, Th _mix is the multi-parameter joint influence threshold, and Th _mix is expressed as:

Th _mix =α·PRS+β·CUR+χ·PRD

α+β+χ=1

α＞β＞＞χ

Among them, the reason for α>β>>χ is that the signal-to-interference-noise ratio directly represents the user's performance index, and whether the channel condition is good or not can only indirectly indicate the user's performance (for example, the cell edge user has a good channel, and the path loss is relatively high due to the distance factor). The performance is not as good as that of the central user), so there is α > β, and the delay can also affect the performance of the user, but the WLAN scheduling time is microseconds, so the user needs can be satisfied faster. The effect of the available delay is not as large as the first two factors, so there is β >> χ.

When Th _mix is low, the overall network load is low. Use a high Th _fix threshold to avoid frequent switching and cause network fluctuations. When Th _mix is high, use a high Th _mix threshold to avoid using a low Th _fix threshold to judge that a large number of cells are overloaded without starting equalization.

On the basis of the above-mentioned embodiment, the step of handing over the user equipment to a neighboring cell according to the preset dynamic threshold that determines that the cell to which the user equipment currently belongs is in an overloaded state, and the handover condition satisfies the preset condition , which specifically includes: when it is determined according to the preset dynamic threshold that the cell to which the user equipment currently belongs is in an overloaded state, and when the signal quality of the neighboring cell and the paranoia of the neighboring cell meet preset conditions, switching the user equipment to adjacent neighborhoods.

Specifically, in 3Gpp36.842, there are six events A1-A6 related to handover, and the LTE base station determines whether the handover is triggered according to the event information reported by the UE. The triggering condition of the A5 event is that the signal quality of the serving cell is worse than the threshold and the signal quality of the neighboring cells is better than the threshold. The trigger condition of the A3 event is that the quality of the adjacent cell is higher than the quality of the serving cell by a certain amount of paranoia. The A5 and A3 events are utilized in the embodiments of the present invention for UE candidates for handover and handover triggering.

A3 events can be represented as:

RSRP _n +offset _n -Hyst>RSRP _s +offset _s +off

Where RSRP _n and RSRP represent the RSRP values of the adjacent cell and serving cell, respectively, offset _n and offset _s represent the cell offset of the target cell and serving cell, Hyst represents the subsequent parameter, and off is the offset of the trigger event .

The A3 event is shown in Figure 2a, the middle cell 2 is overloaded and has four users, and the two adjacent cells on the left and right have only two users and are in a light load state. Cell 2 has edge users interacting with Cell 1. Therefore, when the trigger condition of the A3 event is met, the handover will be completed by increasing the offset _n or decreasing the offset _s . If the offset _s is decreased, the serving cell will have an impact on all adjacent cells. It is more appropriate to adjust the offset _n when transferring to a specific neighboring cell, as shown in Figure 2b.

Before handover, the system needs information about UEs that are at the periphery of the cell and can move, so the A5 event is used to collect the information of edge UEs, and the A5 event can be expressed as:

RSRP _n +offset _n -Hyst>threshold

RSRP _s +offset _s <threshold

Thresh is the threshold in A5 events. The A5 event is shown in Figure 3. In Figure 3a, cell 2 has interacting edge users with adjacent cells. When cell 2 is overloaded and the adjacent cell is lightly loaded, the A5 event will be triggered and uploaded, and the adjacent cells will be become the offloading candidate cell, as shown in Figure 3b. When there is no adjacent cell that satisfies the handover condition among the adjacent cells, the service can be transferred to the LTE path.

To sum up, the method provided by the embodiment of the present invention can estimate the load state of the current overloaded cell and the candidate target cell, and decide the handover of the UE, so as to effectively distribute the load.

Referring to FIG. 4, FIG. 4 is a schematic structural diagram of a load balancing system based on an LWIP architecture provided by an embodiment of the present invention. The provided system includes: a signal-to-interference-to-noise ratio acquisition module 41, a multi-parameter joint impact threshold calculation module 42, and a load balancer Module 43.

Wherein, the signal-to-interference-noise ratio obtaining module 41 is configured to obtain the signal-to-interference-to-noise ratio of the user equipment at the current moment, and to calculate and obtain the signal-to-interference-to-noise ratio qualified rate according to the signal to interference and noise ratio;

The multi-parameter joint impact threshold calculation module 42 is used to obtain the channel utilization rate and the delay parameter of the cell to which the user equipment belongs at the current moment, and according to the signal-to-interference-noise ratio pass rate, the channel utilization rate and the delay parameter, calculate and obtain the multi-parameter joint impact threshold;

The load balancing module 43 is configured to calculate and obtain a preset dynamic threshold value according to the multi-parameter joint influence threshold value and the initial fixed threshold value, and determine according to the preset dynamic threshold value that the cell to which the user equipment currently belongs is in an overloaded state, and the handover condition satisfies the preset value. If conditions are set, the user equipment is handed over to a neighboring cell.

It should be noted that the signal-to-interference-to-noise ratio acquisition module 41 , the multi-parameter joint influence threshold calculation module 42 and the load balancing module 43 cooperate to execute a load balancing method based on the LWIP architecture in the above-mentioned embodiment. For the specific functions of the system, please refer to The foregoing embodiments of the load balancing method based on the LWIP architecture will not be repeated here.

FIG. 5 illustrates a schematic structural diagram of an electronic device. As shown in FIG. 5 , the server may include: a processor (processor) 510, a communications interface (Communications Interface) 520, a memory (memory) 530 and a bus 540, wherein the processing The device 510 , the communication interface 520 , and the memory 530 communicate with each other through the bus 540 . The communication interface 540 can be used for information transmission between the server and the smart TV. The processor 510 can call the logic instructions in the memory 530 to execute the following method: obtain the signal-to-interference-noise ratio of the user equipment at the current moment, and calculate and obtain the signal-to-interference-noise ratio pass rate according to the signal-to-interference and noise ratio; The channel utilization and delay parameters of the cell to which it belongs at the current moment are calculated and obtained according to the signal-to-interference-to-noise ratio pass rate, channel utilization and delay parameters to obtain the multi-parameter joint influence threshold; according to the multi-parameter joint influence threshold and the initial fixed value The threshold value is calculated to obtain a preset dynamic threshold value. According to the preset dynamic threshold value, it is determined that the cell to which the user equipment currently belongs is in an overloaded state, and the handover condition satisfies the preset condition, and the user equipment is handed over to a neighboring cell.

This embodiment also provides a computer program product, where the computer program product 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 methods provided by the above method embodiments, for example, including: acquiring the signal-to-interference-noise ratio of the user equipment at the current moment, calculating and obtaining the signal-to-interference-noise ratio qualification rate according to the signal-to-interference and noise ratio; Calculate the channel utilization rate and delay parameters of the cell to which the time belongs, according to the signal-to-interference-noise ratio pass rate, channel utilization rate, and delay parameters, to calculate and obtain the multi-parameter joint influence threshold; according to the multi-parameter joint influence threshold and the initial fixed threshold , calculate and obtain a preset dynamic threshold, determine that the cell to which the user equipment currently belongs is in an overloaded state according to the preset dynamic threshold, and the handover condition satisfies the preset condition, then the user equipment is handed over to a neighboring cell.

This embodiment provides a non-transitory computer-readable storage medium, where the non-transitory computer-readable storage medium stores computer instructions, and the computer instructions cause the computer to execute the methods provided by the foregoing method embodiments, for example, including : Obtain the signal-to-interference and noise ratio of the user equipment at the current moment, and calculate and obtain the signal-to-interference and noise ratio qualified rate according to the signal-to-interference and noise ratio; obtain the channel utilization and delay parameters of the cell to which the user equipment belongs at the current moment, The signal-to-interference-noise ratio pass rate, the channel utilization rate, and the delay parameters are calculated to obtain a multi-parameter joint influence threshold; according to the multi-parameter joint influence threshold and the initial fixed threshold, a preset dynamic threshold is calculated and obtained, and according to the preset dynamic threshold It is determined that the cell to which the user equipment currently belongs is in an overloaded state, and the handover condition satisfies a preset condition, and the user equipment is handed over to a neighboring cell.

The device embodiments described above are only illustrative, wherein the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in One place, or it can be distributed over multiple network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution in this embodiment. Those of ordinary skill in the art can understand and implement it without creative effort.

From the description of the above embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus a necessary general hardware platform, and certainly can also be implemented by hardware. Based on this understanding, the above-mentioned technical solutions can be embodied in the form of software products in essence or the parts that make contributions to the prior art, and the computer software products can be stored in computer-readable storage media, such as ROM/RAM, magnetic A disc, an optical disc, etc., includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform the methods described in various embodiments or some parts of the embodiments.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that it can still be The technical solutions described in the foregoing embodiments are modified, or some technical features thereof are equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. A load balancing method based on L WIP architecture is characterized by comprising the following steps:

acquiring the signal-to-interference-and-noise ratio of user equipment at the current moment, and calculating to obtain the qualification rate of the signal-to-interference-and-noise ratio according to the signal-to-interference-and-noise ratio;

acquiring the channel utilization rate and the time delay parameter of a cell to which the user equipment belongs at the current moment, and calculating to acquire a multi-parameter combined influence threshold according to the signal-to-interference-and-noise ratio qualification rate, the channel utilization rate and the time delay parameter;

and calculating to obtain a preset dynamic threshold according to the multi-parameter combined influence threshold and the initial fixed threshold, judging that the cell to which the user equipment belongs currently is in an overload state according to the preset dynamic threshold, and switching the user equipment to an adjacent cell if a switching condition meets a preset condition.

2. The method of claim 1, wherein the step of obtaining the signal-to-interference-and-noise ratio of the ue at the current time is preceded by the step of:

sending AN IP probe packet to the user equipment through a W L AN path;

and receiving feedback information returned by the user equipment, and if the feedback information meets a preset condition, performing data transmission through a W L AN path.

3. The method according to claim 2, wherein the step of determining if the feedback information satisfies a predetermined condition specifically comprises:

and if the number of lost probes in the feedback information is judged and obtained to be less than the maximum loss number allowed by a preset threshold, the average detection time delay is less than the maximum time delay allowed by the threshold, and the average detection rate is greater than the minimum rate allowed by the threshold, judging that the feedback information meets the preset condition.

4. The method according to claim 1, wherein the step of obtaining the sir of the ue at the current time and calculating the qualification rate of the sir according to the sir specifically comprises:

obtaining the signal-to-interference-and-noise ratio of the cell to which the user equipment belongs at the current moment

By the formula:

calculating to obtain the qualification rate of the signal to interference and noise ratio, wherein PRS is the qualification rate of the signal to interference and noise ratio and SINR_maxIs a preset parameter.

5. The method according to claim 1, wherein the step of calculating the obtained multi-parameter combined impact threshold according to the sinr qualification rate, the channel utilization rate, and the delay parameter specifically comprises:

according to the formula:

Th_mix＝α·PRS+β·CUR+χ·PRD

calculating to obtain a combined influence threshold of multiple parameters, wherein Th_mixFor a multi-parameter combined influence threshold, PRS is signal-to-interference-and-noise-ratio qualification rate, CUR is channel utilization rate, PRD is delay parameter, α, β and χ are preset parameters, α + β + χ is 1, α＞β＞＞χ。

6. The method according to claim 5, wherein the step of calculating a preset dynamic threshold according to the multi-parameter joint impact threshold and the initial fixed threshold specifically comprises:

according to the formula:

Th_dy＝max{Th_fix,Th_mix}

calculating to obtain a preset dynamic threshold value, wherein Th_dyTo preset dynamic threshold, Th_fixTo initially fix the threshold, Th_mixThe threshold is affected for a multi-parameter combination.

7. The method according to claim 1, wherein the step of determining, according to the preset dynamic threshold, that the cell to which the ue belongs is in an overload state, and if a handover condition meets a preset condition, handing over the ue to an adjacent cell specifically includes:

and when the cell to which the user equipment belongs currently is judged to be in an overload state according to the preset dynamic threshold value and the signal quality and the offset of the adjacent cell meet preset conditions, switching the user equipment to the adjacent cell.

8. An L WIP architecture based load balancing system, comprising:

the signal-to-interference-and-noise ratio acquisition module is used for acquiring the signal-to-interference-and-noise ratio of the user equipment at the current moment and calculating and acquiring the qualification rate of the signal-to-interference-and-noise ratio according to the signal-to-interference-and-noise ratio;

the multi-parameter joint influence threshold calculation module is used for acquiring the channel utilization rate and the time delay parameter of the cell to which the user equipment belongs at the current moment, and calculating to acquire a multi-parameter joint influence threshold according to the signal-to-interference-and-noise ratio qualification rate, the channel utilization rate and the time delay parameter;

and the load balancing module is used for calculating to obtain a preset dynamic threshold according to the multi-parameter combined influence threshold and the initial fixed threshold, judging that the cell to which the user equipment belongs currently is in an overload state according to the preset dynamic threshold, and switching the user equipment to an adjacent cell if a switching condition meets a preset condition.

9. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor when executing the program performs the steps of the L WIP architecture based load balancing method of any one of claims 1 to 7.

10. A non-transitory computer readable storage medium, having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the steps of the L WIP architecture based load balancing method as recited in any one of claims 1 to 7.

Images