CN111225416B - Load balancing method and device - Google Patents
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- CN111225416B CN111225416B CN201811404613.6A CN201811404613A CN111225416B CN 111225416 B CN111225416 B CN 111225416B CN 201811404613 A CN201811404613 A CN 201811404613A CN 111225416 B CN111225416 B CN 111225416B
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/08—Load balancing or load distribution
Abstract
The embodiment of the invention provides a load balancing method and a device, wherein the method comprises the following steps: acquiring load information and coverage information of a serving cell and network perception information of a terminal in the serving cell; judging whether to start load balancing on the terminal according to the load information and the coverage information of the serving cell and the network perception information of the terminal in the serving cell; when judging that the load balance is started for the terminal, acquiring a target cell to be switched of the terminal; and switching the terminal from the serving cell to a target cell. The embodiment of the invention realizes the load balance among the networks with multiple frequency bands and multiple systems.
Description
Technical Field
The embodiment of the invention relates to the technical field of communication, in particular to a load balancing method and device.
Background
At present, with deep popularization of an operation market and increase of service requirements, the LTE bandwidth of a single carrier cannot meet the service requirements. Based on this, increasingly more areas are successively overlapped and opened with a Time Division Duplex (TDD) network of 2600M/1800M/2400M/2100M Frequency band and a Frequency Division Duplex (FDD) network of 900M/1800M, and an operation mode of a multi-band and multi-system multi-network overlapping networking is formed, so that a huge network bearing capacity is provided.
However, although the multi-band multi-standard hybrid LTE networking can provide huge network carrying capacity, traffic splitting and load control between networks become more and more difficult due to differences in coverage, capacity and interference level of different frequency bands or standard networks. For example, under the same condition, the coverage area of the 900M band in FDD is 3 to 4 times of the 2600M band in the TDD system, but the capacity of the FDD is only 1/4 of the 2600M band in the TDD system, and at this time, it is difficult for the existing mobility management method to effectively implement user offloading and load balancing between networks thereof, so that an excessively congested low-band small-bandwidth network and an excessively idle high-band large-bandwidth network are likely to occur.
In summary, in the prior art, it is difficult to achieve load balancing and user perception optimization between multi-band and multi-system networks.
Disclosure of Invention
The embodiment of the invention provides a load balancing method and device, which are used for solving the problem that the load balancing among multi-band multi-standard networks is difficult to realize in the prior art.
In order to solve the foregoing technical problem, in a first aspect, an embodiment of the present invention provides a load balancing method, where the method includes:
acquiring load information and coverage information of a serving cell and network perception information of a terminal in the serving cell;
judging whether to start load balancing on the terminal according to the load information and the coverage information of the serving cell and the network perception information of the terminal in the serving cell;
when judging that the load balance is started for the terminal, acquiring a target cell to be switched of the terminal;
and switching the terminal from the serving cell to a target cell.
In a second aspect, an embodiment of the present invention provides a load balancing apparatus, where the apparatus includes:
the first acquisition module is used for acquiring load information and coverage information of a serving cell and network perception information of a terminal in the serving cell;
the judging module is used for judging whether to start load balancing on the terminal according to the load information, the coverage information and the network perception information of the terminal in the service cell;
the second acquisition module is used for acquiring a target cell to be switched of the terminal when judging that the load balance is started for the terminal;
and the switching module is used for switching the terminal from the service cell to a target cell.
In a third aspect, an embodiment of the present invention provides an electronic device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor implements the steps of the load balancing method when executing the computer program.
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 the computer program, when executed by a processor, implements the steps of the load balancing method.
According to the load balancing method and device provided by the embodiment of the invention, whether the load balancing is started for the terminal is judged according to the load information, the coverage information and the network sensing information of the terminal in the service cell, and when the load balancing is judged to be started for the terminal, the terminal is switched from the service cell to the acquired target cell, so that the network sensing condition of a user, the load condition and the coverage condition of the service cell and other factors are used as the switching trigger conditions of the terminal, the load balancing of the network is realized from the user service sensing, the network capacity and the coverage, and the like at the moment, the network load balancing between multi-band and multi-system networks and the optimization of the user sensing are realized on the basis of the coverage, the capacity, the interference and the like related to the frequency bands and the systems of the network.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a flow chart illustrating the steps of a load balancing method according to an embodiment of the present invention;
FIG. 2 is a block diagram of a load balancing apparatus according to an embodiment of the present invention;
fig. 3 is a schematic physical structure diagram of an electronic device in an embodiment of the present invention.
Detailed Description
In order to make the objects, 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 drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
As shown in fig. 1, which is a flowchart illustrating steps of a load balancing method according to an embodiment of the present invention, the method includes the following steps:
step 101: and acquiring load information and coverage information of the serving cell and network perception information of the terminal in the serving cell.
In this step, specifically, the load information includes: an uplink resource utilization rate, a downlink resource utilization rate and a control channel resource utilization rate; the coverage information comprises Reference Signal Received Power (RSRP); the network perception information of the terminal comprises an uplink packet loss rate of the terminal, a downlink packet loss rate of the terminal, an uplink signal interference plus noise ratio (SINR for short) of the terminal and terminal cache data.
When acquiring load information, coverage information and network sensing information of a terminal in a serving cell, load data counted by the serving cell can be acquired, and load information of the serving cell is obtained according to the load data; the load data comprises uplink resource utilization rate, downlink resource utilization rate and control channel resource utilization rate of a service cell; receiving a measurement report MR and a terminal cache state reported by the terminal, and acquiring coverage information of the serving cell and network perception information of the terminal according to the MR and the terminal cache state; the MR includes an uplink packet loss rate, a downlink packet loss rate, an uplink SINR, and an RSRP of the serving cell of the terminal, and the terminal cache state carries terminal cache data.
Step 102: and judging whether to start load balancing on the terminal according to the load information and the coverage information of the service cell and the network perception information of the terminal in the service cell.
In this step, specifically, when judging whether to start load balancing for a terminal according to load information, coverage information of a serving cell and network awareness information of a terminal in the serving cell, it may be determined whether to start load balancing for the terminal in the load information, coverage information of the serving cell and the network awareness information of the terminal in the serving cell, where the priority order of judgment is from top to bottom, and the priority order of judgment in the network awareness information is from top to bottom: the method comprises the steps that data are cached by a terminal, the packet loss rate and the uplink SINR are obtained, and the packet loss rate comprises the uplink packet loss rate and the downlink packet loss rate; and then sequentially judging whether the load balance is started for the terminal or not according to the judging priority order until the load balance is judged to be started for the terminal, or finishing the judgment whether the load balance is started for the terminal or not according to the lowest judging priority.
Specifically, when sequentially judging whether to start load balancing for the terminal according to the priority order, the method may include the following steps:
d1: and detecting whether the terminal cache data is larger than a preset cache threshold value.
In this step, specifically, according to the priority order of the network sensing information, the load information, and the coverage information, the priority order of the network sensing information is sequentially from top to bottom: if the terminal cache data, the packet loss rate and the uplink SINR are not greater than the preset cache threshold, the step of determining whether the terminal cache data is greater than the preset cache threshold; if the terminal cache data are larger than a preset cache threshold value, entering a step D2; and D3, if the terminal cache data is smaller than or equal to the preset cache threshold, continuing to judge the packet loss rate.
D2: and when detecting that the terminal cache data is larger than the preset cache threshold value, judging to start load balancing for the terminal.
In this step, specifically, when it is detected that the endpoint cache data is greater than the preset cache threshold, it indicates that the network cannot provide sufficient bandwidth, so that backlog of data to be sent at the endpoint is caused, and at this time, it is determined that load balancing is started for the terminal.
D3: when detecting that the terminal cache data is smaller than or equal to the preset cache threshold, detecting whether the uplink packet loss rate of the terminal is larger than a first preset packet loss threshold, and detecting whether the downlink packet loss rate of the terminal is larger than a second preset packet loss threshold.
In this step, specifically, when it is detected that the terminal cache data is less than or equal to the preset cache threshold, it is continuously detected whether the uplink packet loss rate of the terminal is greater than a first preset packet loss threshold, and whether the downlink packet loss rate of the terminal is greater than a second preset packet loss threshold. At this time, if it is detected that the uplink packet loss rate is greater than a first preset packet loss threshold value and/or the downlink packet loss rate is greater than a second preset packet loss threshold value, the step D4 is performed; if the uplink packet loss rate is detected to be less than or equal to a first preset packet loss threshold value and the downlink packet loss rate is detected to be less than or equal to a second preset packet loss threshold value, sequentially determining the priority order from top to bottom according to the network sensing information: and D, caching data, packet loss rate and uplink SINR by the terminal, entering the step D5, and continuously judging the uplink SINR.
D4: and when detecting that the uplink packet loss rate is greater than a first preset packet loss threshold value and/or the downlink packet loss rate is greater than a second preset packet loss threshold value, judging to start load balancing for the terminal.
In this step, when it is detected that the uplink packet loss rate is greater than a first preset packet loss threshold and/or the downlink packet loss rate is greater than a second preset packet loss threshold, it indicates that the network quality cannot meet the service requirement, and at this time, it may be determined that load balancing is started for the terminal.
D5: and when the uplink packet loss rate is detected to be smaller than or equal to a first preset packet loss threshold value and the downlink packet loss rate is detected to be smaller than or equal to a second preset packet loss threshold value, detecting whether the uplink SINR of the terminal is larger than a preset SINR threshold value.
In this step, specifically, when it is detected that the uplink packet loss rate is less than or equal to a first preset packet loss threshold and the downlink packet loss rate is less than or equal to a second preset packet loss threshold, it is continuously detected whether the uplink SINR of the terminal is greater than a preset SINR threshold. At this time, if the uplink SINR of the terminal is greater than the preset SINR threshold, the process proceeds to step D6, and if the uplink SINR of the terminal is less than or equal to the preset SINR threshold, the process proceeds to step D7 according to the sequence of determining priorities from top to bottom, and continues to determine the load information.
D6: and when detecting that the uplink SINR of the terminal is greater than a preset SINR threshold value, judging to start load balancing for the terminal.
In this step, specifically, when it is detected that the uplink SINR of the terminal is greater than the preset SINR threshold, it indicates that the network quality cannot meet the service requirement of the terminal, and at this time, it may be determined that load balancing is started for the terminal.
D7: and when detecting that the uplink SINR of the terminal is less than or equal to a preset SINR threshold, detecting whether the uplink resource utilization rate is greater than a first utilization rate threshold, detecting whether the downlink resource utilization rate is greater than a second utilization rate threshold, and detecting whether the control channel resource utilization rate is greater than a third utilization rate threshold.
In this step, specifically, when it is detected that the uplink SINR of the terminal is less than or equal to the preset SINR threshold, the load information continues to be determined, that is, it is detected whether the uplink resource utilization rate is greater than a first utilization rate threshold, and it is detected whether the downlink resource utilization rate is greater than a second utilization rate threshold, and it is detected whether the control channel resource utilization rate is greater than a third utilization rate threshold. At this time, if one of the above items exceeds the threshold, it indicates that the cell load is too high, and then step D8 is performed; and if all the items in the above list do not exceed the threshold value, the step D9 is entered, and the coverage information is continuously judged.
D8: and when detecting that the uplink resource utilization rate is greater than a first utilization rate threshold, the downlink resource utilization rate is greater than a second utilization rate threshold, and the control channel resource utilization rate is greater than at least one of a third utilization rate threshold, judging to start load balancing for the terminal.
In this step, specifically, when it is detected that the uplink resource utilization is greater than a first utilization threshold, the downlink resource utilization is greater than a second utilization threshold, and the control channel resource utilization is greater than at least one of a third utilization threshold, it indicates that the cell load information is too high, and it is determined that load balancing is started for the terminal at this time.
D9: and when detecting that the uplink resource utilization rate is smaller than or equal to a first utilization rate threshold, the downlink resource utilization rate is smaller than or equal to a second utilization rate threshold, and the control channel resource utilization rate is smaller than or equal to a third utilization rate threshold, detecting whether the RSRP of the serving cell is smaller than a preset RSRP threshold.
In this step, specifically, when it is detected that the uplink resource utilization is less than or equal to a first utilization threshold, the downlink resource utilization is less than or equal to a second utilization threshold, and the control channel resource utilization is less than or equal to a third utilization threshold, the coverage information continues to be determined, that is, it is detected whether RSRP of the serving cell is less than a preset RSRP threshold. At this time, when it is detected that the RSRP of the serving cell is smaller than the preset RSRP threshold, step D10 is entered; when detecting that the RSRP of the serving cell is greater than or equal to the RSRP threshold, step D11 is entered.
D10: and when the RSRP of the serving cell is smaller than a preset RSRP threshold value, judging that load balancing is started for the terminal.
In this step, specifically, when it is detected that RSRP of the serving cell is smaller than a preset RSRP threshold, it indicates that the cell coverage is weak, and at this time, it may be determined that load balancing is started for the terminal.
D11: and when the RSRP of the serving cell is detected to be larger than or equal to the RSRP threshold value, judging not to start load balancing for the terminal.
In this step, specifically, when it is detected that the RSRP of the serving cell is greater than or equal to the RSRP threshold, it is determined not to start load balancing for the terminal.
Therefore, the conditions of coverage, capacity, perception deterioration and the like of the multi-band multi-standard network are detected from multiple dimensions such as terminal caching, packet loss rate, cell SINR, load, coverage and the like, the interference background noise difference, the capacity bandwidth difference and the coverage difference of different frequency bands and standard networks and the network perception performance of users are comprehensively considered, and users with signal strength not reaching the switching condition can be switched to the network with better interference, capacity or service perception in advance, so that the perception self-adaptive switching of the users among the multi-band multi-standard networks is realized.
In addition, it should be noted that when it is determined that load balancing is started for the terminal, it should be ensured that a candidate handover cell whose load is lower than a preset threshold and whose RSRP is greater than a preset RSRP threshold exists in the neighboring cells of the serving cell, so as to ensure the success of handover of the terminal during load balancing.
Step 103: and when judging that the load balance is started for the terminal, acquiring a target cell to be switched by the terminal.
In this step, specifically, the MR reported by the terminal includes RSRPs of multiple neighboring cells of the serving cell measured by the terminal. At this time, when a target cell to be switched by the terminal is obtained, the priority of the multiple adjacent cells of the serving cell can be sequenced according to the RSRP of the multiple adjacent cells of the serving cell measured by the terminal and the sequence of the RSRP from high to low, so as to obtain the sequence of the priority to be switched from high to low; when RSRP of at least two adjacent cells is the same, determining the priority sequence to be switched of the at least two adjacent cells from high to low according to the sequence of the downlink channel utilization rates of the at least two adjacent cells from low to high; then according to the priority sequence to be switched, determining the neighboring cell with the highest priority as the target cell, and trying to switch the terminal from the serving cell to the target cell; wherein the content of the first and second substances,
when the terminal is detected to fail to be switched from the serving cell to the target cell, according to the sequence of the priorities to be switched from high to low, the adjacent cells corresponding to the priorities except the highest priority are sequentially determined as the target cell, and the terminal is successfully switched when the terminal is detected to be switched from the serving cell to the target cell, or the attempted switching of all the adjacent cells is completed.
For example, assuming that the neighboring cell of the serving cell includes a, B, and C, RSRP of the neighboring cell a is higher than RSRP of the neighboring cell B, RSRP of the neighboring cell B is the same as RSRP of the neighboring cell C, and downlink channel utilization rate of the neighboring cell B is lower than downlink channel utilization rate of the neighboring cell C, at this time, the neighboring cells are subjected to high-to-low to-be-switched priority ranking according to a sequence of RSRP from high to low, and when RSRP is the same, the neighboring cells are subjected to high-to-low to-be-switched priority ranking according to a sequence of downlink channel utilization rate from low to high, so that to obtain to-be-switched priority ranking as a, B, and C. At this time, the neighboring cell a is determined as the target cell, but when it is detected that the terminal attempts to switch to the target cell fails, the neighboring cell B is continuously determined as the target cell, if it is detected that the terminal attempts to switch to the target cell at this time successfully, the switching process is ended, if it is detected that the terminal attempts to switch to the target cell fails, the neighboring cell C is continuously determined as the target cell, and the terminal attempts to switch from the serving cell to the target cell.
Therefore, the target cell to be switched is selected according to the conditions of coverage and load, so that the terminal selects the network differentiated residence with the best coverage, capacity and perception among different networks, and further the self-adaptive network load balancing is realized.
Step 104: and switching the terminal from the serving cell to the target cell.
In this step, specifically, after the target cell is determined, the terminal may be handed over from the serving cell to the target cell.
After the terminal is switched from the serving cell to the target cell, the method may further include the following steps:
step S1: a handover prohibit timer is started.
Step S2: and when detecting that the switching prohibition timer is not timed out, prohibiting the terminal from starting load balancing.
Therefore, when the switching prohibition timer does not time out, the terminal is prohibited from restarting the load balance, all switching is prohibited at the moment, the second switching in a short time after the first switching is avoided, and further the service perception fluctuation of the terminal is avoided.
And step S3: when the switching prohibition timer is detected to be overtime, starting a switching penalty timer, and acquiring a switching reason of the terminal switched from the serving cell to the target cell, wherein the switching reason is that load switching with balanced load is started according to load information of the serving cell, coverage switching with balanced load is started according to coverage information of the serving cell, or sensing switching with balanced load is started according to network sensing information of the terminal.
In this step, specifically, when detecting that the handover prohibition timer times out, the handover penalty timer is started, and at this time, the handover reason for the terminal to be handed over from the serving cell to the target cell may be obtained. The switching reason may be to start load switching for load balancing according to load information of the serving cell, start coverage switching for load balancing according to coverage information of the serving cell, or start sensing switching for load balancing according to network sensing information of the terminal.
Specifically, after the terminal is switched to the target cell, the target cell may record information such as a serving cell, a handover completion time, and a handover reason before the terminal is switched, and at this time, the base station may directly obtain the handover reason of the terminal.
And step S4: when the switching reason is the load switching or the perception switching, in a time period when the switching penalty timer is not overtime, a corresponding switching reference value used for judging whether to execute the load switching or the perception switching on the terminal is increased, and when the switching penalty timer is detected to be overtime, the corresponding switching reference value used for judging whether to execute the load switching or the perception switching on the terminal is recovered.
In this step, specifically, when the switching reason is the load switching or the sensing switching, if the switching penalty timer is not overtime, the corresponding switching reference value used for determining whether to perform the load switching or the sensing switching on the terminal may be increased, that is, when the switching reason is the load switching, the load switching reference value used for determining whether to perform the load switching on the terminal is increased, and when the switching reason is the sensing switching, the sensing switching reference value used for determining whether to perform the sensing switching on the terminal is increased. In addition, when the switching penalty timer is detected to be overtime, a corresponding switching reference value used for judging whether to execute load switching or sense switching on the terminal is recovered so as to ensure that whether the normal detection process of load balancing of the terminal is started or not.
For example, if the switching reason for switching the terminal from the serving cell to the target cell is the perceived switching factor, "terminal cache data", the preset cache threshold corresponding to the terminal cache data may be increased in a time period when the switching penalty timer is not expired, and when the switching penalty timer is expired, the preset cache threshold corresponding to the terminal cache data may be restored to the original value before the increase. In addition, if the switching reason of the terminal from the serving cell to the target cell is the load switching factor "uplink channel utilization rate", the preset utilization rate threshold corresponding to the uplink channel utilization rate may be increased in a time period when the switching penalty timer is not overtime, and the preset utilization rate threshold corresponding to the uplink channel utilization rate is restored to the original value before the increase when the switching penalty timer is overtime. It should be noted that, of course, the increase amount of the preset cache threshold corresponding to the terminal cache data and the preset utilization threshold corresponding to the uplink channel utilization may be set according to an actual situation, and are not specifically limited herein.
Therefore, after the terminal is successfully switched, a timing punishment mechanism is adopted for the service cell after the terminal is switched, and the load balance judgment of the service cell is forbidden or weakened in the punishment period, so that the aim of delaying or forbidding the switching is fulfilled, thereby avoiding the terminal from being switched for many times in a short time and ensuring the stable perception of the user. In addition, when the switching prohibition timer is overtime, the possibility of switching exists in the time before the switching punishment timer is overtime, at the moment, punishment weakening is carried out on the service cell, and the condition of call drop or no service caused by rapid deterioration of the service cell after switching is effectively avoided.
Thus, in the embodiment, whether to start load balancing for the terminal is judged according to the load information, the coverage information and the network sensing information of the terminal in the serving cell, and when the terminal is judged to start load balancing, the terminal is switched from the serving cell to the obtained target cell, so that the differential switching measurement is performed on the network selection of the terminal by comprehensively considering the interference background noise difference, the capacity bandwidth difference and the coverage difference of different frequency bands and different standard networks and the network sensing performance of the user, the best perception of the user among different networks is realized, and the perception self-adaption adjustment of the user is realized while the load balancing is realized.
In addition, as shown in fig. 2, a block diagram of a load balancing apparatus in an embodiment of the present invention is shown, where the apparatus includes:
a first obtaining module 201, configured to obtain load information and coverage information of a serving cell and network awareness information of a terminal in the serving cell;
a determining module 202, configured to determine whether to start load balancing for the terminal according to the load information and coverage information of the serving cell and network sensing information of the terminal in the serving cell;
a second obtaining module 203, configured to obtain a target cell to be switched by the terminal when it is determined that load balancing is started for the terminal;
a switching module 204, configured to switch the terminal from the serving cell to a target cell.
Optionally, the load information includes: an uplink resource utilization rate, a downlink resource utilization rate and a control channel resource utilization rate; the coverage information comprises reference signal received power, RSRP; the network perception information of the terminal comprises an uplink packet loss rate of the terminal, a downlink packet loss rate of the terminal, an uplink signal interference plus noise ratio (SINR) of the terminal and terminal cache data;
the first obtaining module 201 includes:
a first obtaining unit, configured to obtain load data counted by the serving cell, and obtain load information of the serving cell according to the load data; the load data comprises uplink resource utilization rate, downlink resource utilization rate and control channel resource utilization rate of a service cell;
a second obtaining unit, configured to receive the measurement report MR and the terminal cache state reported by the terminal, and obtain coverage information of the serving cell and network sensing information of the terminal according to the MR and the terminal cache state; the MR includes an uplink packet loss rate, a downlink packet loss rate, an uplink SINR, and an RSRP of the serving cell of the terminal, and the terminal cache state carries terminal cache data.
Optionally, the determining module 202 includes:
a first determining unit, configured to determine a priority order for determining whether to start load balancing for a terminal, from load information, coverage information of the serving cell, and network awareness information of a terminal in the serving cell, where the priority order for determining is, in order from top to bottom, network awareness information, load information, and coverage information, and the priority order for determining in the network awareness information is, in order from top to bottom: the method comprises the steps that data are cached by a terminal, the packet loss rate and the uplink SINR are obtained, and the packet loss rate comprises the uplink packet loss rate and the downlink packet loss rate;
and the judging unit is used for sequentially judging whether the terminal is started to carry out load balancing according to the judging priority sequence until the terminal is judged to be started to carry out load balancing or finishing judging whether the terminal is started to carry out load balancing according to the lowest judging priority.
Optionally, the determining unit is configured to:
detecting whether the terminal cache data is larger than a preset cache threshold value or not;
when detecting that the terminal cache data is larger than the preset cache threshold value, judging to start load balancing for the terminal; when detecting that the cache data of the terminal is smaller than or equal to the preset cache threshold, detecting whether the uplink packet loss rate of the terminal is larger than a first preset packet loss threshold, and detecting whether the downlink packet loss rate of the terminal is larger than a second preset packet loss threshold;
when the uplink packet loss rate is detected to be greater than a first preset packet loss threshold value and/or the downlink packet loss rate is detected to be greater than a second preset packet loss threshold value, judging to start load balancing for the terminal; when detecting that the uplink packet loss rate is smaller than or equal to a first preset packet loss threshold and the downlink packet loss rate is smaller than or equal to a second preset packet loss threshold, detecting whether the uplink SINR of the terminal is larger than a preset SINR threshold;
when detecting that the uplink SINR of the terminal is greater than a preset SINR threshold value, judging to start load balancing for the terminal; when detecting that the uplink SINR of the terminal is less than or equal to a preset SINR threshold, detecting whether the uplink resource utilization rate is greater than a first utilization rate threshold, detecting whether the downlink resource utilization rate is greater than a second utilization rate threshold, and detecting whether the control channel resource utilization rate is greater than a third utilization rate threshold;
when detecting that the uplink resource utilization rate is greater than a first utilization rate threshold, the downlink resource utilization rate is greater than a second utilization rate threshold, and the control channel resource utilization rate is greater than at least one of a third utilization rate threshold, judging to start load balancing for the terminal; when detecting that the uplink resource utilization rate is smaller than or equal to a first utilization rate threshold, the downlink resource utilization rate is smaller than or equal to a second utilization rate threshold, and the control channel resource utilization rate is smaller than or equal to a third utilization rate threshold, detecting whether the RSRP of the serving cell is smaller than a preset RSRP threshold;
when detecting that the RSRP of the serving cell is smaller than a preset RSRP threshold value, judging to start load balancing for the terminal; and when the RSRP of the serving cell is detected to be larger than or equal to the RSRP threshold value, judging not to start load balancing for the terminal.
Optionally, the MR further includes RSRPs of multiple neighboring cells of the serving cell measured by the terminal;
the second obtaining module 203 comprises:
a third obtaining unit, configured to perform priority ranking on multiple neighboring cells of the serving cell according to RSRPs of the multiple neighboring cells of the serving cell measured by the terminal, and according to a sequence from high RSRP to low RSRP, to obtain a sequence from high RSRP to low RSRP to be switched; when RSRP of at least two adjacent cells is the same, determining the priority sequence to be switched of the at least two adjacent cells from high to low according to the sequence of the downlink channel utilization rates of the at least two adjacent cells from low to high;
a second determining unit, configured to determine, according to the priority sequence to be switched, a neighboring cell with a highest priority as the target cell, and attempt to switch the terminal from the serving cell to the target cell; wherein, the first and the second end of the pipe are connected with each other,
when the terminal is detected to fail to be switched from the serving cell to the target cell, according to the sequence of the priorities to be switched from high to low, the adjacent cells corresponding to the priorities except the highest priority are sequentially determined as the target cell, and the terminal is successfully switched when the terminal is detected to be switched from the serving cell to the target cell, or the attempted switching of all the adjacent cells is completed.
Optionally, the apparatus further comprises:
the starting module is used for starting the switching prohibition timer;
the switching forbidding module is used for forbidding the terminal to start load balancing when detecting that the switching forbidding timer is not overtime;
a third obtaining module, configured to start a handover penalty timer when detecting that the handover prohibition timer times out, and obtain a handover reason for a terminal to be handed over from the serving cell to a target cell, where the handover reason is to start load balancing load handover according to load information of the serving cell, start load balancing coverage handover according to coverage information of the serving cell, or start load balancing sensing handover according to network sensing information of the terminal;
and the processing module is used for increasing a corresponding switching reference value for judging whether to execute load switching or perception switching on the terminal in a time period when the switching penalty timer is not overtime when the switching reason is the load switching or perception switching, and restoring the corresponding switching reference value for judging whether to execute the load switching or perception switching on the terminal when the switching penalty timer is detected to be overtime.
The load switching device provided in this embodiment determines whether to start load balancing for the terminal according to the load information, coverage information, and network sensing information of the terminal in the serving cell, and switches the terminal from the serving cell to the obtained target cell when it is determined that load balancing is started for the terminal, thereby implementing network load balancing from user service sensing, network capacity, and coverage by using the network sensing conditions of the user, the load conditions of the serving cell, and the coverage conditions as the trigger conditions for switching of the terminal, and implementing network load balancing based on coverage, capacity, interference, and the like, which are related to the frequency band and the standard of the network, and further implementing network load balancing between multi-band and multi-standard networks and optimization of user sensing.
In addition, as shown in fig. 3, an entity structure schematic diagram of the electronic device provided in the embodiment of the present invention is shown, where the electronic device may include: a processor (processor) 310, a communication Interface (Communications Interface) 320, a memory (memory) 330 and a communication bus 340, wherein the processor 310, the communication Interface 320 and the memory 330 communicate with each other via the communication bus 340. The processor 310 may invoke a computer program stored on the memory 330 and executable on the processor 310 to perform the methods provided by the various embodiments described above, including, for example: acquiring load information and coverage information of a serving cell and network perception information of a terminal in the serving cell; judging whether to start load balancing on the terminal according to the load information and the coverage information of the serving cell and the network perception information of the terminal in the serving cell; when judging that the load balance is started for the terminal, acquiring a target cell to be switched of the terminal; and switching the terminal from the serving cell to a target cell.
In addition, the logic instructions in the memory 330 may be implemented in the form of software functional units and stored in a computer readable storage medium when the software functional units are sold or used as independent products. Based on such understanding, the technical solution of the present invention or a part thereof which substantially contributes to the prior art may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
Embodiments of the present invention further provide a non-transitory computer-readable storage medium, on which a computer program is stored, where the computer program is implemented to perform the method provided in the foregoing embodiments when executed by a processor, and the method includes: acquiring load information and coverage information of a serving cell and network perception information of a terminal in the serving cell; judging whether to start load balancing on the terminal according to the load information and the coverage information of the serving cell and the network perception information of the terminal in the serving cell; when judging that the load balance is started for the terminal, acquiring a target cell to be switched of the terminal; and switching the terminal from the serving cell to a target cell.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. A method of load balancing, the method comprising:
acquiring load information and coverage information of a serving cell and network perception information of a terminal in the serving cell;
judging whether to start load balancing on the terminal according to the load information and the coverage information of the serving cell and the network perception information of the terminal in the serving cell;
when judging that the load balance is started for the terminal, acquiring a target cell to be switched of the terminal;
switching the terminal from the serving cell to a target cell;
starting a switch prohibition timer;
when detecting that the switching prohibition timer is not timed out, prohibiting the terminal from starting load balancing;
when the switching prohibition timer is detected to be overtime, starting a switching penalty timer, and acquiring a switching reason of the terminal from the serving cell to the target cell, wherein the switching reason is that load switching of load balancing is started according to load information of the serving cell, coverage switching of load balancing is started according to coverage information of the serving cell, or sensing switching of load balancing is started according to network sensing information of the terminal;
and when the switching reason is the load switching or the perception switching, in a time period when the switching penalty timer is not overtime, improving a corresponding switching reference value for judging whether to execute the load switching or the perception switching on the terminal, and when detecting that the switching penalty timer is overtime, recovering the corresponding switching reference value for judging whether to execute the load switching or the perception switching on the terminal.
2. The method of claim 1, wherein the load information comprises: an uplink resource utilization rate, a downlink resource utilization rate and a control channel resource utilization rate; the coverage information comprises reference signal received power, RSRP; the network perception information of the terminal comprises an uplink packet loss rate of the terminal, a downlink packet loss rate of the terminal, an uplink signal interference plus noise ratio (SINR) of the terminal and terminal cache data;
the acquiring load information, coverage information and network sensing information of the terminal in the serving cell includes:
acquiring load data counted by the serving cell, and acquiring load information of the serving cell according to the load data; the load data comprises uplink resource utilization rate, downlink resource utilization rate and control channel resource utilization rate of a service cell;
receiving a measurement report MR and a terminal cache state reported by the terminal, and acquiring coverage information of the serving cell and network perception information of the terminal according to the MR and the terminal cache state; the MR includes an uplink packet loss rate, a downlink packet loss rate, an uplink SINR, and an RSRP of the serving cell of the terminal, and the terminal cache state carries terminal cache data.
3. The method according to claim 2, wherein the determining whether to initiate load balancing for the terminal according to the load information, coverage information of the serving cell and network awareness information of the terminal in the serving cell comprises:
determining a judging priority sequence for judging whether to start load balancing on the terminal in the load information, the coverage information of the service cell and the network perception information of the terminal in the service cell, wherein the judging priority sequence sequentially comprises the network perception information, the load information and the coverage information from top to bottom, and the judging priority sequence in the network perception information sequentially comprises the following steps from top to bottom: the method comprises the steps that data are cached by a terminal, the packet loss rate and the uplink SINR are obtained, and the packet loss rate comprises the uplink packet loss rate and the downlink packet loss rate;
and sequentially judging whether the terminal is started to carry out load balancing according to the judging priority order until the terminal is judged to be started to carry out load balancing or finishing judging whether the terminal is started to carry out load balancing according to the lowest judging priority.
4. The method according to claim 3, wherein said sequentially determining whether to start load balancing for the terminals according to the determination priority order comprises:
detecting whether the terminal cache data is larger than a preset cache threshold value or not;
when detecting that the terminal cache data is larger than the preset cache threshold value, judging to start load balancing for the terminal;
when detecting that the cache data of the terminal is smaller than or equal to the preset cache threshold, detecting whether the uplink packet loss rate of the terminal is larger than a first preset packet loss threshold, and detecting whether the downlink packet loss rate of the terminal is larger than a second preset packet loss threshold;
when detecting that the uplink packet loss rate is greater than a first preset packet loss threshold value and/or the downlink packet loss rate is greater than a second preset packet loss threshold value, judging to start load balancing for the terminal;
when detecting that the uplink packet loss rate is smaller than or equal to a first preset packet loss threshold and the downlink packet loss rate is smaller than or equal to a second preset packet loss threshold, detecting whether the uplink SINR of the terminal is larger than a preset SINR threshold;
when detecting that the uplink SINR of the terminal is greater than a preset SINR threshold value, judging to start load balancing for the terminal;
when detecting that the uplink SINR of the terminal is smaller than or equal to a preset SINR threshold, detecting whether the uplink resource utilization rate is larger than a first utilization rate threshold, detecting whether the downlink resource utilization rate is larger than a second utilization rate threshold, and detecting whether the control channel resource utilization rate is larger than a third utilization rate threshold;
when detecting that the uplink resource utilization rate is greater than a first utilization rate threshold, the downlink resource utilization rate is greater than a second utilization rate threshold, and the control channel resource utilization rate is greater than at least one of a third utilization rate threshold, determining to start load balancing for the terminal;
when detecting that the uplink resource utilization rate is smaller than or equal to a first utilization rate threshold, the downlink resource utilization rate is smaller than or equal to a second utilization rate threshold, and the control channel resource utilization rate is smaller than or equal to a third utilization rate threshold, detecting whether the RSRP of the serving cell is smaller than a preset RSRP threshold;
when the RSRP of the serving cell is detected to be smaller than a preset RSRP threshold value, judging that load balancing is started for the terminal;
and when the RSRP of the serving cell is detected to be larger than or equal to the RSRP threshold value, judging not to start load balancing for the terminal.
5. The method of claim 2, wherein the MR further includes RSRPs of multiple neighbor cells of the serving cell measured by the terminal;
when judging that the load balance is started for the terminal, acquiring a target cell to be switched by the terminal comprises the following steps:
according to RSRP of a plurality of adjacent cells of a serving cell measured by a terminal, carrying out priority sequencing on the plurality of adjacent cells of the serving cell according to the sequence of the RSRP from high to low to obtain a priority sequence to be switched from high to low; when RSRP of at least two adjacent cells is the same, determining the priority sequence to be switched of the at least two adjacent cells from high to low according to the sequence of the downlink channel utilization rates of the at least two adjacent cells from low to high;
determining the neighbor cell with the highest priority as the target cell according to the priority sequence to be switched, and trying to switch the terminal from the serving cell to the target cell; wherein the content of the first and second substances,
when the terminal is detected to fail to be switched from the serving cell to the target cell, determining adjacent cells corresponding to other priorities except the highest priority as the target cell according to the sequence of priorities to be switched from high to low in sequence until the terminal is successfully switched from the serving cell to the target cell or the attempted switching of all the adjacent cells is completed.
6. A load balancing apparatus, the apparatus comprising:
the first acquisition module is used for acquiring load information and coverage information of a serving cell and network perception information of a terminal in the serving cell;
the judging module is used for judging whether to start load balancing on the terminal according to the load information, the coverage information and the network perception information of the terminal in the service cell;
the second acquisition module is used for acquiring a target cell to be switched of the terminal when judging that the load balance is started for the terminal;
a switching module, configured to switch the terminal from the serving cell to a target cell;
the switching module is also used for starting a switching prohibition timer; when detecting that the switching prohibition timer is not timed out, prohibiting the terminal from starting load balancing; when the switching prohibition timer is detected to be overtime, starting a switching penalty timer, and acquiring a switching reason of the terminal from the serving cell to the target cell, wherein the switching reason is that load switching of load balancing is started according to load information of the serving cell, coverage switching of load balancing is started according to coverage information of the serving cell, or sensing switching of load balancing is started according to network sensing information of the terminal; and when the switching reason is the load switching or the perception switching, in a time period when the switching penalty timer is not overtime, improving a corresponding switching reference value for judging whether to execute the load switching or the perception switching on the terminal, and when detecting that the switching penalty timer is overtime, recovering the corresponding switching reference value for judging whether to execute the load switching or the perception switching on the terminal.
7. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the steps of the load balancing method according to any one of claims 1 to 5 when executing the computer program.
8. A non-transitory computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the load balancing method according to any one of claims 1 to 5.
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| CN112188580B (en) * | 2020-09-24 | 2023-05-30 | 北京自如信息科技有限公司 | Frequency band switching method and device, AP and storage medium |
| CN113286315B (en) * | 2021-06-11 | 2022-08-09 | 中国联合网络通信集团有限公司 | Load balance judging method, device, equipment and storage medium |
| CN114258081B (en) * | 2021-11-16 | 2024-05-03 | 中国联合网络通信集团有限公司 | Load balancing method and device for same coverage cells, electronic equipment and storage medium |
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