WO2011116688A1

WO2011116688A1 - Method and device for carrier load equalization

Info

Publication number: WO2011116688A1
Application number: PCT/CN2011/072055
Authority: WO
Inventors: 刘阳; 赵孟凯
Original assignee: 电信科学技术研究院
Priority date: 2010-03-22
Filing date: 2011-03-22
Publication date: 2011-09-29
Also published as: CN102111813B; CN102111813A

Abstract

A method and a device for carrier load equalization are disclosed by the invention. The method includes the following steps: according to the current sending/receiving power of the carriers, and/or the current accessing user number of the carriers, and/or the current throughput in shared channel of the carriers, the current load of each carrier is confirmed according to the computing rule of the carrier load (S201); the user load in each carrier is equalized according to the current load of each carrier (S202). The invention is applied for solving the problem of less equalized of each carrier load because of the current dynamic channel allocation algorithm in High Speed Packet Access (HSPA) system, thus making the load of the sending/receiving power, throughput and user number more equalized among carriers, avoiding the decline of service quality in heavily loaded carriers, and improving utilization ratio of the resources, and being of benefit to the stability of hardware device.

Description

Method and device for carrier load balancing This application claims priority to Chinese Patent Application No. 201010130893.3, filed on March 22, 2010, entitled "Method and Equipment for Carrier Load Balancing" The entire contents of which are incorporated herein by reference. Technical field

The present invention relates to the field of communications technologies, and in particular, to a method and device for carrier load balancing. Background technique

The SDCA (Slow Dynamic Channel Allocation) algorithm is a resource selection algorithm for assigning new target resources to users when applying for new resources or changing existing resources in a mobile communication system. The SDCA algorithm can prioritize the available alternative resources according to different strategies for use by algorithm modules such as admission, handover or reconfiguration.

The current SDCA algorithm, for HSDPA (High Speed Downlink Packet Access) or HSUPA (High Speed Uplink Packet Access) carrier, the user condition changes rapidly due to the shared channel. Therefore, generally only the power/interference or BRU (Basic Resource Unit) occupancy of the time slot occupied by the control channel is considered.

The specific prior art SDCA algorithm flow is as shown in FIG. 1 and includes the following steps: Step S101: Receive a public measurement report of a base station.

That is, the periodic measurement report sent by the receiving base station according to a certain period.

Step S102: Calculate a priority factor of each carrier, and update a list of carrier priorities.

According to the determination result of the priority, the corresponding carrier with the highest priority is selected for the user.

In the process of implementing the present invention, the inventors have found that at least the following problems exist in the prior art. question:

The existing SDCA algorithm of HSPA (High Speed Packet Access) only considers the time slot of the accompanying and control channels when performing carrier ordering.

The control channel is fixedly allocated after the cell is established, and the configuration of each carrier is generally the same; and the accompanying channel is a dedicated channel, and the occupancy situation and the use of the carrier shared channel are not directly related. Therefore, the current algorithm may cause each carrier to have a similar priority in the SDCA algorithm, but the carrier actual throughput load difference is large.

At this time, when a new user accesses, the system may access the user to a carrier whose sputum load is nearly saturated, so that the load situation between the carriers is further unbalanced.

The imbalance of the actual load between carriers may on the one hand lead to a decrease in the quality of service on a heavily loaded carrier, and on the other hand is not conducive to the stability of the device hardware, and in terms of resource utilization, such a scheme is not optimized. Program. Summary of the invention

The present invention provides a method and device for carrier load balancing, which is used to solve the problem that the load of each carrier is unbalanced due to the existing dynamic channel allocation algorithm in the HSPA system.

To achieve the above object, an aspect of the present invention provides a method for carrier load balancing, including:

Determining the current load of each carrier according to the carrier load calculation rule according to the current transmit power/receive power of the carrier, and/or the number of users currently accessed by the carrier, and/or the current throughput of the carrier shared channel;

Load balancing is performed on users in each carrier according to the current load of each carrier. On the other hand, an embodiment of the present invention further provides a device for carrier load balancing, including:

An acquiring module, configured to acquire a current transmit power/receive power of the carrier, and/or a number of users currently accessed by the carrier, and/or a current throughput of the carrier shared channel; a determining module, configured to: according to the current transmit power/receive power of the carrier acquired by the acquiring module, and/or the number of users currently accessed by the carrier, and/or the current throughput of the carrier shared channel, according to the setting module Set a carrier load calculation rule to determine the current load of each carrier;

And an equalization module, configured to perform load balancing on users in each carrier according to the current load of each carrier determined by the determining module.

Compared with the prior art, the present invention has the following advantages:

By applying the technical solution proposed by the embodiment of the present invention, the transmission and reception power, the throughput, and the number of users of the carrier are more balanced, which can avoid the degradation of the service quality on the carrier with heavy load, and improve the resource utilization rate. It also contributes to the stability of hardware devices. 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. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any inventive labor.

1 is a schematic flow chart of an SDCA algorithm in the prior art;

2 is a schematic flow chart of a method for carrier load balancing according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a device for carrier load balancing according to an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only one part of the present invention. The embodiments are divided into embodiments, not all. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

The present invention provides a corresponding solution for comprehensively considering the influence of multiple factors, and achieving carrier load balancing, in the case of carrier allocation in the prior art solution, which may cause unbalanced carrier load and affect service quality. .

FIG. 2 is a schematic flowchart of a method for carrier load balancing according to an embodiment of the present disclosure, where the method specifically includes the following steps:

Step S201: Determine a current load of each carrier according to a carrier load calculation rule according to a current carrier transmit power/reception power, and/or a number of users currently accessed by the carrier, and/or a current throughput of the carrier shared channel.

It should be further pointed out that this step can preset the corresponding trigger condition, that is, set the trigger condition of the carrier load calculation, as long as the trigger condition is reached, step S201 will be triggered.

The trigger conditions for calculating the carrier load specifically include:

A new user requests access to an HSDPA carrier or HSUPA carrier or HSPA carrier; or,

The current HSDPA carrier or HSUPA carrier or HSPA carrier has users in the hold phase, and the carrier load calculation period is reached.

The HSDPA carrier is specifically a carrier that has an HS-PDSCH (High-Speed Physical Downlink Shared Channel) in the downlink; the HSUPA carrier is specifically an E-PUCH (Enhanced Physical Uplink Channel). The carrier of the HSPA carrier is a carrier that has a shared channel in the uplink and downlink directions. The above description is applicable to the full text in the embodiment of the present invention, and will not be further described later.

According to the above-mentioned differentiation of the triggering conditions, this step is further divided into the following three cases: Case 1: When a new user requests to access the HSDPA carrier, the specific processing procedure is as follows: Obtaining the current transmit power of each HSDPA carrier. If there is only one HSDPA carrier with the lowest transmit power, the load of the HSDPA carrier with the lowest transmit power is determined to be the lowest; if there are multiple HSDPA carriers with the lowest transmit power, or the transmit power of each HSDPA carrier is the same Obtaining a plurality of HSDPA carriers with the lowest transmit power, or the number of users currently accessing each HSDPA carrier with the same power. If there is only one HSDPA carrier with the least number of users currently accessed, the number of users currently accessed is the least. The HSDPA carrier has the lowest load;

If there are multiple HSDPA carriers with the least number of currently accessed users, obtain the current throughput of the shared channel of the HSDPA carrier with the least number of currently accessed users, and determine an HSDPA carrier that conforms to the current throughput application policy of the shared channel. The load is the lowest.

The load of one HSDPA carrier that determines the current application policy of the shared channel is the lowest, specifically:

If the current throughput application strategy of the shared channel is to maximize the cell throughput, it is determined that the load of the HSDPA carrier with the lowest throughput of the shared channel is the lowest;

If the current throughput of the shared channel is applied to equalize the amount of traffic between users, it is determined that the load of the HSDPA carrier with the highest throughput of the shared channel is the lowest.

Case 2: When a new user requests to access the HSUPA carrier, the specific processing is as follows:

Obtaining the received power of each HSUPA carrier, and determining that the load of the HSUPA carrier with the smallest received power is the lowest; or

Obtaining the number of users currently accessed by each HSUPA carrier, and determining that the load of the HSUPA carrier with the least number of currently accessed users is the lowest; or

The throughput of each HSUPA carrier is obtained, and the load of the HSUPA carrier with the lowest throughput is determined to be the lowest.

Case 3: When there are users in the hold phase of the current HSDPA carrier or HSUPA carrier or HSPA carrier, and the carrier load calculation period is reached, the specific processing procedure is as follows: Determining the current transmit power/receive power of each carrier that is in the hold phase and reaching the carrier load calculation period, and/or the number of users currently accessed by the carrier, and/or the current throughput of the carrier shared channel;

When the load balancing trigger condition is reached, the carrier with the largest load and the carrier with the lowest load are determined.

In a practical application scenario, the specific content of the trigger condition for the carrier load calculation described above may be set and adjusted according to actual needs, and such changes do not affect the protection scope of the present invention.

Further, according to the difference of the load balancing trigger conditions, the following four cases are included:

1. When the load balancing trigger condition is triggered by the absolute value difference

When the difference between the maximum transmission power/reception power and the minimum transmission power/reception power exceeds the difference value of the transmission power/reception power, it is determined that the load of the carrier having the largest transmission power/reception power is the largest, and it is determined that the transmission is minimum. The carrier of power/receive power has the lowest load;

When the difference between the maximum number of access users and the minimum number of access users exceeds the difference threshold of the number of access users, it is determined that the load of the carrier with the largest access user is the largest, and the load of the carrier with the smallest access user is determined. Minimum

When the difference between the maximum throughput and the minimum throughput exceeds the difference threshold of the throughput, it is determined that the load of the carrier having the largest throughput is the largest, and the load of the carrier having the smallest throughput is determined to be the lowest.

2. When the load balancing trigger condition is proportional difference trigger:

When the ratio of the maximum transmit power/receive power to the minimum transmit power/receive power exceeds the ratio of the transmit power/receive power, the load of the carrier having the largest transmit power/receive power is determined to be the maximum, and the minimum transmit power is determined/ The carrier of the received power has the lowest load;

When the ratio of the maximum number of access users to the minimum number of access users exceeds the threshold of the number of access users, it is determined that the load of the carrier with the largest access user is the largest, and the load of the carrier with the smallest access user is determined to be the lowest; When the ratio of the maximum throughput to the minimum throughput exceeds the throughput threshold, it is determined that the load of the carrier with the largest throughput is the largest, and the load of the carrier with the smallest throughput is determined to be the lowest.

3. When the load balancing trigger condition is threshold trigger:

When the maximum transmit power/receive power exceeds the high threshold of the transmit power/receive power, and the minimum transmit power/receive power is lower than the lower threshold of the transmit power/receive power, the load of the carrier having the maximum transmit power/receive power is determined. Maximum, and determine that the carrier with the smallest transmit power/receive power has the lowest load;

When the maximum number of access users exceeds the high threshold of the number of access users, and the minimum number of access users is lower than the lower threshold of the number of access users, it is determined that the carrier with the largest access user has the largest load and is determined to have the smallest The carrier of the access user has the lowest load; when the maximum throughput exceeds the high threshold of the throughput, and the minimum throughput is lower than the lower threshold of the throughput, it is determined that the carrier with the largest throughput has the largest load and is determined to have the smallest The carrier load of the throughput is the lowest.

4. When the load balancing trigger condition is triggered by the priority factor difference:

According to the current user in the hold phase, and the current transmit power/receive power of each carrier that has reached the carrier load calculation period, and/or the number of users currently accessed by the carrier, and/or the current throughput of the carrier shared channel, and/or a power interference ratio, determining a priority factor of each carrier;

When the difference between the maximum priority factor and the minimum priority factor exceeds the difference threshold of the priority factor, it is determined that the load of the carrier having the largest priority factor is the largest, and the load of the carrier having the smallest priority factor is determined to be the lowest.

In the actual application scenario, the specific content of the load balancing trigger condition described above may be set and adjusted according to actual needs, and such changes do not affect the protection scope of the present invention.

Step S202: Perform load balancing on users in each carrier according to the current load of each carrier.

Corresponding to the triggering conditions of the two carrier load calculations proposed in step S201, the processing of this step specifically includes the following two cases: When a new user requests to access the HSDPA carrier or the HSUPA carrier or the HSPA carrier, select the lowest loaded HSDPA carrier or the HSUPA carrier or the HSPA carrier to access the new user;

When the HSDPA carrier or HSUPA carrier or HSPA carrier of the user currently in the hold phase reaches the carrier load calculation period, the HSDPA carrier or the HSUPA carrier or some users on the HSPA carrier with the largest load are adjusted to the HSDPA carrier or HSUPA with the lowest load. On the carrier or HSPA carrier.

By applying the technical solution proposed by the embodiment of the present invention, the transmission and reception power, the throughput, and the number of users of the carrier are more balanced, which can avoid the degradation of the service quality on the carrier with heavy load, and improve the resource utilization rate. It also contributes to the stability of hardware devices. The technical solutions proposed in the embodiments of the present invention are described in detail below with reference to specific application scenarios.

Compared with the defects in the prior art, the embodiment of the present invention proposes a dynamic channel allocation algorithm that considers carrier load balancing by combining multiple measurement quantities in carrier sequencing.

The algorithm is applicable to HSPA systems and can be divided into two parts:

In the first part, when the HSPA service is accessed, the carrier with lower load is selected. When the HSPA service is accessed, the SDCA algorithm performs integrated carrier transmission when sorting HSPA carriers.

The current load of each carrier is determined by factors such as the received power, the number of users connected, and the amount of traffic. The lower the load, the higher the priority of the carrier. Therefore, the carrier with the highest priority, that is, the lowest load, is selected. Enter the user.

The corresponding processing procedure can be further divided into the following two situations according to the carrier type that the user requests to access:

Case 1: The user requests access to the HSDPA carrier.

First, carrier selection is performed based on transmission power.

The downlink transmit power measurement quantity of the HS-PDSCH shared channel of the HSDPA carrier is examined. In a specific application scenario, the average transmit power of the carrier shared channel is high, indicating sharing. High channel utilization and less idle resources. Therefore, the carrier with a lower average transmit power indicates that the shared channel has more idle resources and is suitable for accessing new users, and the access priority is higher.

Second, carrier selection is based on the number of access users.

If the power of multiple carriers is the same, and the power is the minimum, or the power of each carrier is full, that is, there is no free shared channel resource, consider the number of HSPA users that have been accessed. The less the number of users, the higher the carrier priority. high.

Again, the selection is based on the amount of sputum.

For carriers that are both full power transmission or the same minimum power and the same number of access users, consider the carrier shared channel throughput. At this point, there are two strategies: If the overall cell throughput is maximized, the lower the current traffic throughput is, the higher the carrier access priority is. If some users are considered to have poor wireless environment, the user should be balanced. The amount of vomiting, the higher the current carrier throughput, the higher the carrier access priority.

Case 2, the user requests access to the HSUPA carrier

According to the specific rule setting, one of the following measurement quantities can be selected as the carrier selection basis:

Determine the received power according to the E-PUCH shared channel uplink RTWP (Received Total Wide Band Power) / RSCP (Received Signal Code Power) / ISCP (Interference Signal Code Power) The lower the power, the higher the carrier priority; or,

Obtain the number of HSPA users that the carrier has accessed. The lower the number of users, the higher the carrier priority; or,

Obtain the E-PUCH shared channel throughput, and the lower the throughput, the higher the carrier access priority.

In the specific application scenario, for the HSPA carrier where the HS-PDSCH and the E-PUCH shared channel are configured, the downlink can refer to the downlink policy of the HSDPA carrier, and the uplink can be combined with the uplink policy of the HSUPA carrier.

Based on the foregoing technical solution, when performing carrier prioritization according to the SDCA algorithm, the uplink and downlink ordering criteria can be separately selected, and the SDCA uplink and downlink factor settings and applications are implemented to realize the comprehensive consideration of the uplink and downlink sorting priorities. Part II: During the service maintenance phase, if the load between carriers is not balanced, the users in the carrier with higher load are adjusted to the carrier with lower load.

During the service hold period, when a certain load balancing trigger condition is reached and the carrier load difference reaches a certain level, the user in the carrier with higher load can be adjusted to the carrier with lower load.

There are many methods for judging the difference in carrier load. Taking the carrier throughput load as an example, one or more of the following strategies may be included:

1. Configure the absolute difference between the inter-carrier throughput, and when the maximum throughput and the minimum throughput are greater than this value, adjust some users on the carrier with the largest amount of transmission to the carrier with the smallest amount of transmission.

2. Configure the ratio of the amount of inter-carrier throughput between the two carriers. When the difference between the two carriers' throughput ratio reaches the threshold, adjust some users on the carrier with the largest amount of traffic to the carrier with the smallest amount of traffic.

3. Configure the high threshold and the low threshold of the absolute value of the inter-carrier throughput. When one carrier is higher than the high threshold and the other carrier is lower than the lower threshold, some users on the carrier higher than the high threshold are adjusted to be lower than the lower threshold. On the low threshold carrier.

4. Configure the SDCA carrier priority factor difference, that is, consider both the throughput and the power/interference. When the two-carrier SDCA is sorted, when the priority factor difference between the uplink and downlink weighting reaches the threshold, the factor is smaller (the priority is lower). Part of the user on the carrier is adjusted to a larger factor

(on a higher priority) carrier. When there are multiple carriers, it is usually possible to directly compare the priority factors of the two highest and lowest priority carriers.

When adjusting the users between the carriers, you can select the UE (User Equipment) to be adjusted according to the application rate of the current service of each user. The principle is that the UE with the least adjustment adjusts the load of the two carriers after adjustment.

When adjusting users, you can also consider the adjustment of the two-carrier interchange user.

By applying the technical solution proposed by the embodiment of the present invention, the transmission and reception power, the throughput, and the user load between carriers are more balanced, and the carrier on the heavy load can be avoided. The quality of services is degraded, and while improving resource utilization, it also contributes to the stability of hardware devices. In order to implement the technical solution proposed by the present invention, the present invention further provides a device for load balancing of a carrier, and a schematic structural diagram thereof is shown in FIG. 3, including:

The setting module 31 is configured to set a carrier load calculation rule.

The obtaining module 32 is configured to obtain the current transmit power/receive power of the carrier, and/or the number of users currently accessed by the carrier, and/or the current throughput of the carrier shared channel.

The determining module 33 is configured to set, according to the current transmit power/receive power of the carrier acquired by the obtaining module 32, and/or the number of users currently accessed by the carrier, and/or the current throughput of the carrier shared channel, according to the setting module 31. The carrier load calculation rule determines the current load of each carrier.

In a specific application scenario, the setting module 31 is further configured to set a trigger condition for the carrier load calculation. Correspondingly, when the triggering condition of the carrier load calculation set by the setting module 31 is reached, the determining module 33 performs determining the current current of each carrier. Load operation.

The triggering condition of the carrier load calculation specifically includes:

Based on the trigger condition of the carrier load calculation described above, the operations performed by the determining module 33 specifically include the following situations:

Case 1: When a new user requests to access the HSDPA carrier, the following is: If only one HSDPA carrier with the lowest transmission power exists in the current transmission power of each HSDPA carrier acquired by the obtaining module 32, the determining module 33 determines that the transmission power is the lowest. The HSDPA carrier has the lowest load;

If the transmission power of the current HSDPA carrier acquired by the obtaining module 32 has multiple HSDPA carriers with the lowest transmission power, or the transmission power of each HSDPA carrier is the same, the obtaining module 32 acquires multiple HSDPA carriers with the lowest transmission power, or the transmission power. the same The number of users currently accessed by each HSDPA carrier, if there is only one HSDPA carrier with the least number of users currently accessed, the determining module 33 determines that the load of the HSDPA carrier with the least number of users currently accessed is the lowest;

If the plurality of HSDPA carriers with the lowest transmission power acquired by the module 32, or the number of currently accessed users of the HSDPA carriers with the same transmission power, there are a plurality of HSDPA carriers with the least number of currently accessed users, the obtaining module 32 obtains The current throughput of the shared channel of the HSDPA carrier with the least number of currently accessed users, the determining module 33 determines that the load of one HSDPA carrier conforming to the current throughput application policy of the shared channel is the lowest.

The determining module 33 determines that the load of one HSDPA carrier that meets the current throughput application policy of the shared channel is the lowest, specifically:

If the current throughput application strategy of the shared channel is to maximize the cell throughput, the determining module 33 determines that the load of the HSDPA carrier with the lowest throughput of the shared channel is the lowest;

If the current throughput application strategy of the shared channel is to equalize the throughput between users, the determination module 33 determines that the load of the HSDPA carrier with the highest throughput of the shared channel is the lowest.

Case 2: When a new user requests to access the HSUPA carrier, the determining module 33 determines the current load of each carrier, which is specifically:

The determining module 33 determines that the received power of each HSUPA carrier acquired by the obtaining module 32 has the lowest load of the HSUPA carrier with the smallest received power; or

The determining module 33 determines that the load of the HSUPA carrier with the least number of users currently accessed by each of the HSUPA carriers acquired by the obtaining module 32 is the lowest; or, the determining module 33 determines each HSUPA obtained by the obtaining block 32. The carrier of the carrier has the lowest load on the HSUPA carrier with the lowest throughput.

Case 3: In this case, the setting module 31 is further configured to set a load balancing trigger condition to have a user in the holding phase in the current HSDPA carrier or the HSUPA carrier or the HSPA carrier, and the carrier load calculation period is reached, and the load is reached. When the trigger condition is equalized, the trigger determination module 33 determines the carrier with the largest load and the carrier with the lowest load; If the load balancing trigger condition set by the setting module 31 is an absolute value difference trigger, if the difference between the maximum transmit power/received power and the minimum transmit power/received power acquired by the acquisition module 32 exceeds the difference between the transmit power and the receive power The value threshold, the determining module 33 determines that the load of the carrier having the largest transmit power/receive power is the largest, and determines that the load of the carrier having the smallest transmit power/receive power is the lowest; if the acquisition module 32 obtains the maximum number of access users and the minimum The difference between the number of access users exceeds the difference threshold of the number of access users, and the determining module 33 determines that the load of the carrier with the largest access user is the largest, and determines that the load of the carrier with the smallest access user is the lowest; if the acquisition module 32 obtains The difference between the maximum throughput and the minimum throughput exceeds the difference threshold of the throughput, and the determining module 33 determines that the load of the carrier having the largest throughput is the largest, and determines that the carrier with the minimum throughput has the lowest load;

When the load balancing trigger condition is the proportional difference trigger, if the ratio of the maximum transmit power/received power and the minimum transmit power/receive power acquired by the earboxing module 32 exceeds the ratio of the transmit power/receive power, the determining module 33 Determining that the load of the carrier having the largest transmit power/receive power is the largest, and determining that the load of the carrier having the smallest transmit power/receive power is the lowest; if the ratio of the maximum number of access users acquired by the acquisition module 32 to the minimum number of access users is exceeded The ratio threshold of the number of incoming users, the determining module 33 determines that the load of the carrier having the largest access user is the largest, and determines that the load of the carrier with the smallest access user is the lowest; if the acquisition module 32 obtains the maximum throughput and the minimum throughput ratio Above the ratio threshold of the throughput, the determining module 33 determines that the load of the carrier having the largest throughput is the largest, and determines that the carrier with the smallest throughput has the lowest load;

When the load balancing trigger condition is a threshold trigger, if the maximum transmit power/receive power acquired by the acquisition module 32 exceeds the high threshold of the transmit power/receive power, and the minimum transmit power/receive power is lower than the lower threshold of the transmit power/receive power The determining module 33 determines that the load of the carrier having the largest transmit power/receive power is the largest, and determines that the load of the carrier having the smallest transmit power/receive power is the lowest; if the maximum number of access users acquired by the acquisition module 32 exceeds the number of access users The high threshold, and the minimum number of access users is lower than the lower threshold of the number of access users, the determining module 33 determines that the load of the carrier with the largest access user is the largest, and determines that the load of the carrier with the smallest access user is the lowest if the acquisition module 32 The obtained maximum throughput exceeds the high threshold of throughput, and the minimum throughput is lower than the low threshold of throughput, and the determining module 33 determines that the load of the carrier with the largest throughput is the largest, and determines that the carrier with the minimum throughput has the lowest load. ;

When the load balancing trigger condition is triggered by the priority factor difference, the determining module 33 obtains the current transmit power/receive power of each carrier of the carrier load calculation period according to the current user in the hold phase, and/or the current access of the carrier. The number of users, and/or the current throughput of the carrier-sharing channel, and the power-to-interference ratio, determine the priority factor of each carrier; and the difference between the maximum priority factor and the minimum priority factor exceeds the priority factor When clarifying the value, it is determined that the load of the carrier having the largest priority factor is the largest, and the load of the carrier having the smallest priority factor is determined to be the lowest.

The equalization module 34 is configured to perform load balancing on users in each carrier according to the current load of each carrier determined by the determining module 33, specifically:

When a new user requests access to an HSDPA carrier or an HSUPA carrier or an HSPA carrier, the equalization module 34 selects the lowest loaded HSDPA carrier or HSUPA carrier or HSPA carrier to access the new user;

When the HSDPA carrier or HSUPA carrier or HSPA carrier of the user currently in the hold phase reaches the carrier load calculation period, the equalization module 34 adjusts the HSDPA carrier with the largest load or some users on the HSUPA carrier or HSPA carrier to the HSDPA with the lowest load. Carrier or HSUPA carrier or HSPA carrier.

By applying the technical solution proposed by the embodiment of the present invention, the transmit power, the throughput, and the user load between carriers are more balanced, which can avoid the decrease of the service shield on the heavily loaded carrier, and improve the resource utilization. At the same time, it also benefits the stability of hardware devices. Through the description of the above embodiments, those skilled in the art can clearly understand that the present invention can be implemented by means of software plus a necessary general hardware platform, and of course, can also be through hardware, but in many cases, the former is a better implementation. the way. Based on such understanding, the technical solution of the present invention can contribute in essence or to the part that contributes to the prior art. The form of a software product is stored in a storage medium, comprising instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform the embodiments of the present invention. method.

A person skilled in the art can understand that the drawings are only a schematic diagram of a preferred embodiment, and the modules or processes in the drawings are not necessarily required to implement the invention.

Those skilled in the art can understand that the modules in the apparatus in the embodiments may be distributed in the apparatus of the embodiment according to the description of the embodiments, or may be correspondingly changed in one or more apparatuses different from the embodiment. The modules of the above embodiments may be combined into one module, or may be further split into a plurality of sub-modules.

The serial numbers of the embodiments of the present invention are merely for the description, and do not represent the advantages and disadvantages of the embodiments. The above disclosure is only a few specific embodiments of the present invention, but the present invention is not limited thereto, and any changes that can be made by those skilled in the art should fall within the protection scope of the present invention.

Claims

Rights request

A method for carrier load balancing, characterized in that:

Load balancing is performed on users in each carrier according to the current load of each carrier.

2. The method according to claim 1, wherein the current transmission power/reception power according to the carrier, and/or the number of users currently accessed by the carrier, and/or the current throughput of the carrier shared channel, according to The carrier load calculation rule, before determining the current load of each carrier, includes:

Determining whether the trigger condition of the carrier load calculation is reached;

The operation of determining the current load of each carrier is performed when the trigger condition of the carrier load calculation is reached.

The method according to claim 2, wherein the triggering condition of the carrier load calculation specifically includes:

There are new users requesting access to high speed downlink packet access HSDPA carrier or high speed uplink packet access HSUPA carrier or high speed packet access HSPA carrier; or,

The method according to claim 3, wherein, when a new user requests to access the HSDPA carrier, the current transmission power according to the carrier, and/or the number of users currently accessed by the carrier, and / or the current throughput of the carrier shared channel, according to the carrier load calculation rules, determine the current load of each carrier, specifically:

Obtaining the current transmit power of each HSDPA carrier. If there is only one HSDPA carrier with the lowest transmit power, it is determined that the load of the HSDPA carrier with the lowest transmit power is the lowest;

If there are multiple HSDPA carriers with the lowest transmission power, or the transmission power of each HSDPA carrier is the same, the multiple HSDPA carriers with the lowest transmission power are obtained, or The number of users currently accessing the same HSDPA carrier with the same power, if there is only one HSDPA carrier with the least number of users currently accessed, it is determined that the load of the HSDPA carrier with the least number of currently accessed users is the lowest;

If there are a plurality of HSDPA carriers that have the least number of users currently accessed, obtain the current throughput of the shared channel of the HSDPA carrier with the least number of currently accessed users, and determine a current application policy that conforms to the current channel of the shared channel. The HSDPA carrier has the lowest load.

The method according to claim 4, wherein the determining the load of an HSDPA carrier that meets the current throughput application policy of the shared channel is the lowest, specifically: if the current throughput of the shared channel is applied to implement the cell Maximizing the throughput, determining that the load of the HSDPA carrier with the lowest throughput of the shared channel is the lowest;

The method according to claim 3, wherein, when a new user requests access to the HSUPA carrier, the current received power according to the carrier, and/or the number of users currently accessed by the carrier, and/or The current throughput of the carrier shared channel is determined according to the carrier load calculation rule, and the current load of each carrier is determined as follows:

Obtain the throughput of each HSUPA carrier and determine that the load of the HSUPA carrier with the lowest throughput is the lowest.

The method according to claim 3, wherein, when there is a user in the hold phase in the current HSDPA carrier or the HSUPA carrier or the HSPA carrier, and the carrier load calculation period is reached, the current transmit power according to the carrier / Receive power, and / or the number of users currently accessed by the carrier, and / or the current throughput of the carrier shared channel, according to the carrier load calculation rules, determine the current load of each carrier, specifically:

Determine that the user is currently in the hold phase and has reached the carrier load calculation cycle. Current transmit power/receive power of each carrier, and/or the number of users currently accessed by the carrier, and/or the current throughput of the carrier shared channel;

The method according to claim 7, wherein when the load balancing trigger condition is an absolute value difference trigger, when the load balancing trigger condition is reached, determining a carrier with the largest load and a last load carrier, specifically :

When the difference between the maximum transmit power/receive power and the minimum transmit power/receive power exceeds the difference value of the transmit power/receive power, the load of the carrier having the largest transmit power/receive power is determined to be the maximum, and the minimum transmit power is determined to be determined. / The carrier of the received power has the lowest load;

The method according to claim 7, wherein when the load balancing triggering condition is a proportional difference triggering, when the load balancing triggering condition is reached, determining the carrier with the largest load and the carrier with the lowest load are specifically:

When the ratio of the maximum transmission power/reception power to the minimum transmission power/reception power exceeds the ratio of the transmission power/reception power, the load of the carrier having the largest transmission power/reception power is determined to be the maximum, and the minimum transmission power is determined. / The carrier of the received power has the lowest load;

When the ratio of the maximum number of access users to the minimum number of access users exceeds the threshold of the number of access users, it is determined that the load of the carrier with the largest access user is the largest, and the load of the carrier with the smallest access user is determined to be the lowest;

When the ratio of the maximum throughput to the minimum throughput exceeds the ratio of the throughput, the load of the carrier with the largest throughput is determined to be the largest, and the minimum throughput is determined. The carrier load is the lowest.

The method according to claim 7, wherein when the load balancing trigger condition is threshold triggering, when the load balancing trigger condition is reached, determining the carrier with the largest load and the carrier with the lowest load are specifically:

The method according to claim 7, wherein when the load balancing trigger condition is triggered by the priority factor difference, when the load balancing trigger condition is reached, determining the carrier with the largest load and the carrier with the lowest load, specifically For:

The method according to claim 3, wherein the load balancing is performed on users in each carrier according to the current load of each carrier, specifically:

When a new user requests access to the HSDPA carrier or the HSUPA carrier or the HSPA carrier, the HSDPA carrier or the HSUPA carrier or the HSPA carrier with the lowest load is selected to access the new user; When the HSDPA carrier or HSUPA carrier or HSPA carrier of the user currently in the hold phase reaches the carrier load calculation period, the HSDPA carrier with the largest load or some users on the HSUPA carrier or HSPA carrier is adjusted to the HSDPA carrier or HSUPA with the lowest load. On the carrier or HSPA carrier.

13. A carrier load balancing device, comprising:

a setting module, configured to set a carrier load calculation rule;

An obtaining module, configured to acquire a current transmit power/receive power of the carrier, and/or a number of users currently accessed by the carrier, and/or a current throughput of the carrier shared channel;

a determining module, configured to: according to the current transmit power/receive power of the carrier acquired by the acquiring module, and/or the number of users currently accessed by the carrier, and/or the current throughput of the carrier shared channel, according to the setting module Set a carrier load calculation rule to determine the current load of each carrier;

14. Apparatus according to claim 13 wherein:

The setting module is further configured to set a trigger condition for calculating a carrier load;

The determining module is further configured to: according to the trigger condition of the carrier load calculation set by the setting module, according to the current transmit power/receive power of the carrier acquired by the acquiring module, and/or the current access of the carrier The number of users, and/or the current throughput of the carrier shared channel, determines the current load of each carrier according to the carrier load calculation rule set by the setting module.

The device according to claim 14, wherein the triggering condition of the carrier load calculation set by the setting module specifically includes:

16. The device of claim 15, wherein when there are new users please When determining to access the HSDPA carrier, the determining module determines the current load of each carrier, which is specifically:

If the transmission power of the current HSDPA carrier acquired by the acquiring module has only one HSDPA carrier with the lowest transmission power, the determining module determines that the load of the HSDPA carrier with the lowest transmission power is the lowest;

If the transmission power of the current HSDPA carrier acquired by the acquiring module has multiple HSDPA carriers with the lowest transmission power, or the transmission power of each HSDPA carrier is the same, the acquisition of the plurality of transmission powers is the lowest. The HSDPA carrier, or the number of users currently accessing each HSDPA carrier with the same power transmission. If there is only one HSDPA carrier with the least number of users currently accessed, the determining module determines that the number of users currently accessed is the least. The HSDPA carrier has the lowest load;

If there are multiple HSDPA carriers with the lowest transmission power acquired by the acquisition module, or HSDPA carriers with the least number of currently accessed users among the currently accessed users of each HSDPA carrier with the same transmission power, The obtaining module acquires the current throughput of the shared channel of the HSDPA carrier with the least number of currently accessed users, and the determining module determines that the load of one HSDPA carrier that meets the current throughput application policy of the shared channel is the lowest.

The device according to claim 16, wherein the determining module determines that the load of an HSDPA carrier that conforms to the current throughput application policy of the shared channel is the lowest, specifically:

If the current throughput application strategy of the shared channel is to maximize the cell throughput, the determining module determines that the load of the HSDPA carrier with the lowest throughput of the shared channel is the lowest;

If the current throughput application strategy of the shared channel is to equalize the amount of traffic between users, the determining module determines that the load of the HSDPA carrier with the highest throughput of the shared channel is the lowest.

The device according to claim 15, wherein when a new user requests to access the HSUPA carrier, the determining module determines a current load of each carrier, specifically: The determining module determines that the load of the HSUPA carrier with the smallest received power among the received powers of the HSUPA carriers acquired by the acquiring module is the lowest; or

The determining module determines that the load of the HSUPA carrier with the least number of users currently accessed by each HSUPA carrier acquired by the acquiring module is the lowest, or

The determining module determines that the load of the HSUPA carrier with the lowest throughput of each HSUPA carrier acquired by the acquiring module is the lowest.

The device of claim 15, wherein the setting module is further configured to set a load balancing trigger condition to reach a carrier in a current HSDPA carrier or an HSUPA carrier or an HSPA carrier in a hold phase. When the load calculation period is reached, and the load balancing trigger condition is reached, the determining module is triggered to determine the carrier with the largest load and the carrier with the lowest load;

If the load balancing trigger condition set by the setting module is an absolute value difference trigger, if the difference between the maximum transmit power/received power and the minimum transmit power/received power acquired by the acquiring module exceeds the transmit power/receive power The difference threshold, the determining module determines that the load of the carrier having the largest transmit power/receive power is the largest, and determines that the load of the carrier having the smallest transmit power/receive power is the lowest; if the maximum access user acquired by the acquisition module The difference between the quantity and the minimum number of access users exceeds the difference threshold of the number of access users, the determining module determines that the load of the carrier with the largest access user is the largest, and determines that the load of the carrier with the smallest access user is the lowest; The difference between the maximum throughput and the minimum throughput obtained by the acquisition module exceeds the difference threshold of the throughput, the determining module determines that the load of the carrier having the largest throughput is the largest, and determines that the carrier with the minimum throughput has the lowest load;

When the load balancing trigger condition is a proportional difference trigger, if the ratio of the maximum transmit power/received power and the minimum transmit power/receive power acquired by the acquisition module exceeds a ratio threshold of the transmit power/receive power, the determining module determines to have The carrier of the maximum transmit power/receive power has the largest load, and determines that the load of the carrier having the most d, the transmit power/receive power is the lowest; if the ratio of the maximum number of access users acquired by the acquisition module to the minimum number of access users exceeds a ratio threshold of the number of access users, the determining module determines The carrier with the largest access user has the largest load, and determines that the load with the most d, the carrier of the access user is the lowest; if the ratio of the maximum throughput to the minimum throughput obtained by the acquisition module exceeds the throughput threshold, The determining module determines that the load of the carrier with the largest throughput is the largest, and determines that the load of the carrier with the smallest throughput is the lowest;

When the load balancing trigger condition is threshold triggering, if the maximum transmit power/receive power acquired by the obtained ear block exceeds the high threshold of the transmit power/receive power, and the minimum transmit power/receive power is lower than the transmit power/receive a low threshold of power, the determining module determines that the load of the carrier having the largest transmit power/receive power is the largest, and determines that the load of the carrier having the smallest transmit power/receive power is the lowest; if the maximum access user acquired by the acquisition module If the number exceeds a high threshold of the number of access users, and the minimum number of access users is lower than the lower threshold of the number of access users, the determining module determines that the load of the carrier with the largest access user is the largest, and determines that the user has the smallest access user. The load of the carrier is the lowest. If the maximum throughput received by the acquisition module exceeds the high threshold of the throughput, and the minimum throughput is lower than the lower threshold of the throughput, the determining module determines that the load of the carrier having the largest throughput is the largest, and Determining that the carrier with the smallest amount of throughput has the lowest load;

When the load balancing trigger condition is triggered by the priority factor difference, the determining module according to the current user in the holding phase, and reaches the current transmit power/receive power of each carrier in the carrier load calculation period, and/or the current carrier The number of incoming users, and/or the current throughput of the carrier-sharing channel, and the power-to-interference ratio, determine the priority factor of each carrier; and the difference between the maximum priority factor and the minimum priority factor exceeds the difference of the priority factors When the value is thresholded, it is determined that the load of the carrier having the largest priority factor is the largest, and the load of the carrier having the smallest priority factor is determined to be the lowest.

The device according to claim 15, wherein the equalization module is configured to perform load balancing on users in each carrier according to the current load of each carrier determined by the determining module, specifically:

When a new user requests to access the HSDPA carrier or the HSUPA carrier or the HSPA carrier, the equalization module selects the lowest loaded HSDPA carrier or the HSUPA carrier or the HSPA carrier to access the new user;

When there is currently a HSDPA carrier or HSUPA carrier for the user in the hold phase or When the HSPA carrier reaches the carrier load calculation period, the equalization module will maximize the load.

Some users on the HSDPA carrier or HSUPA carrier or HSPA carrier are adjusted to the lowest load HSDPA carrier or HSUPA carrier or HSPA carrier.