CN105813133B - Network load balancing control method and system and load balancing control device - Google Patents

Network load balancing control method and system and load balancing control device Download PDF

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CN105813133B
CN105813133B CN201410838380.6A CN201410838380A CN105813133B CN 105813133 B CN105813133 B CN 105813133B CN 201410838380 A CN201410838380 A CN 201410838380A CN 105813133 B CN105813133 B CN 105813133B
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cell
service
user terminal
load
information
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CN105813133A (en
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张建敏
王敏
谢伟良
杨峰义
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China Telecom Corp Ltd
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China Telecom Corp Ltd
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Abstract

The embodiment of the invention discloses a network load balancing control method and system and a load balancing control device, wherein the method comprises the following steps: in the process of initiating a service request by a user terminal, a target service cell of the user terminal is adaptively adjusted according to the load information of the current service cell, the load information of adjacent cells under the same RAT system, the load information of adjacent cells under different RAT systems, the service requirement and capability information of the user terminal and the like, and the load balance among cells under the same RAT system and among cells under different RAT systems is dynamically realized.

Description

Network load balancing control method and system and load balancing control device
Technical Field
The present invention relates to communications technologies, and in particular, to a network load method and system, and a load balancing control device.
Background
With the rapid development of mobile communication technology, various new services of the mobile internet and the internet of things emerge, and a network of a fifth generation mobile communication technology (5G) in the future is a heterogeneous network based on multiple services, wherein multiple wireless technology standards coexist. Meanwhile, the load difference of each cell is large due to the uneven distribution of terminal users and the rapid change of user services along with the change of time, the probability of network congestion is increased for the cells with excessively concentrated services, the user experience is reduced, and the problem of low resource utilization rate exists for the cells with low service loads. Therefore, the network balancing technology aims to adjust the load levels among a plurality of cells, reduce the service distribution of high-load cells and improve the resource utilization rate of low-load cells, so that the purposes of improving the user experience and improving the overall resource utilization rate of the network are achieved.
However, in the process of implementing the present invention, the inventors found that, currently, technologies for balancing loads between cells under the same Radio Access Technology (RAT) system have been researched more, but how to dynamically balance loads between cells under the same RAT system and between cells under different RAT systems in the process of initiating a service request by a terminal, for example, under a future service-based heterogeneous network, such as a cellular Software Defined Network (SDN) architecture network, cannot be implemented at present.
Disclosure of Invention
The embodiment of the invention provides a network load balancing control method and system and a load balancing control device, which are used for dynamically realizing load balancing between cells under the same RAT system and between cells under different RAT systems, and improving user experience and network resource utilization rate.
The network load balancing control method provided by the embodiment of the invention comprises the following steps:
a user terminal initiates a service request to a service base station in a current service cell, wherein the service request comprises a user terminal identifier, a user identifier and service requirement information requested by the user terminal;
the service base station reports a service control request message to the load balancing control device, wherein the service control request message comprises a service request and a cell identifier of a current service cell;
the load balancing control device acquires the load information of the current service cell, the load information of adjacent cells under the same Radio Access Technology (RAT) system, the load information of adjacent cells under different RAT systems, the capability information of the user terminal and the wireless resource information required to be occupied by the service demand according to the user terminal identification, the user identification, the service demand information and the cell identification of the current service cell, and selects a target service cell providing the service for the user of the user terminal;
and the load balancing control device triggers the user terminal to switch to the target service cell to carry out the service.
In another embodiment of the network load balancing control method, the load balancing control device obtains load information of a current serving cell, load information of neighboring cells in the same RAT system, load information of neighboring cells in different RAT systems, capability information of the user terminal, and radio resource information required to be occupied by service requirements according to a user terminal identifier, a user identifier, service requirement information, and a cell identifier of the current serving cell, and accordingly, selecting a target serving cell providing the service for the user terminal user includes:
acquiring load information of the current service cell and wireless resource information of a cell required to be occupied to meet the service requirement from a service base station according to the service requirement information and the cell identifier of the current service cell;
according to the load information of the current service cell and the wireless resource information of the cell required to be occupied, identifying whether the network expected load of the current service cell exceeds the preset load threshold of the service cell after the current service cell provides the service for the user;
if the network expected load of the current service cell does not exceed the preset load threshold of the service cell, the service cell is taken as a target service cell, and the service base station is indicated to process the service request;
if the network expected load of the current service cell exceeds a preset load threshold of the service cell, acquiring load information of each adjacent cell of the current service cell in the same RAT system and wireless resource information of occupied cells required for meeting the service requirements according to the service requirement information and the cell identification of the current service cell;
according to the load information of each adjacent cell in the same RAT system and the wireless resource information of the cell required to be occupied, identifying whether the adjacent cell exists in the same RAT system, wherein the expected network load of the adjacent cell does not exceed a preset load threshold of the cell after the service is provided for the user;
if the adjacent cells of which the network expected load does not exceed the preset load threshold of the cells exist after the service is provided for the user, selecting one adjacent cell with the best signal quality from the adjacent cells of which the network expected load does not exceed the preset load threshold of the cells in the same RAT system as a target service cell, and then executing a load balancing control device to trigger the user terminal to switch to the target service cell to perform the operation of the service.
In another embodiment based on the above network load balancing control method, selecting a neighboring cell with the best signal quality from neighboring cells in which the network expected load in the same RAT system does not exceed a preset cell load threshold as a target serving cell includes: the load balancing control device indicates the service base station to send system measurement notification to the user terminal;
the service base station receives a cell measurement report reported by the user terminal after the user terminal performs inter-system measurement and forwards the cell measurement report to the load balancing control device, wherein the cell measurement report comprises the signal intensity of each adjacent cell;
and the load balancing control device selects an adjacent cell with the maximum signal strength from the adjacent cells of which the network expected load does not exceed a preset cell load threshold in the same RAT system as a target service cell according to the signal strength of each adjacent cell in the cell measurement report.
In another embodiment based on any one of the above network load balancing control methods, the method further includes:
if the same RAT system does not have an adjacent cell which does not exceed the preset load threshold of the cell after the service is provided for the user, the load balancing control device acquires the capability information of the user terminal according to the user terminal identification and identifies whether the user terminal has the capability of accessing other RAT systems or not according to the capability information of the user terminal;
if the user terminal has the capacity of accessing other RAT systems, selecting one RAT system from the other RAT systems which the user terminal has the capacity of accessing as a different RAT system, and acquiring load information of each adjacent cell of a current service cell in the different RAT systems and wireless resource information of occupied cells required for meeting service requirements according to the service requirement information and the cell identification of the current service cell;
according to the load information of each adjacent cell in different RAT systems and the wireless resource information of the cell required to be occupied, identifying whether the adjacent cell exists in the different RAT systems, wherein the expected network load of the adjacent cell does not exceed a preset load threshold of the cell after the service is provided for a user;
if the adjacent cells of which the network expected load does not exceed the preset load threshold of the cell exist after the service is provided for the user, selecting one adjacent cell with the best signal quality from the adjacent cells of which the network expected load does not exceed the preset load threshold of the cell in different RAT systems as a target service cell, and then executing a load balancing control device to trigger the user terminal to switch to the target service cell to perform the operation of the service.
In another embodiment of the network load balancing control method, selecting one RAT system from other RAT systems that the ue has the capability to access as a different RAT system includes:
and according to the preset priority sequence among the RAT systems, selecting one other RAT system with the highest priority from the other RAT systems which the user terminal has the capability of accessing as a different RAT system.
In another embodiment of the network load balancing control method, the method further includes:
if there is no adjacent cell with network expected load not exceeding the preset load threshold of the cell after the service is provided for the user in different RAT systems, the load balancing control device selects other RAT systems with the next priority from other RAT systems which the user terminal can access as different RAT systems according to the preset priority sequence among the RAT systems, and executes the operation of acquiring the load information of each adjacent cell of the current service cell in the different RAT systems and the wireless resource information of the cell required to be occupied by meeting the service requirement according to the service requirement information and the cell identification of the current service cell.
In another embodiment of the network load balancing control method, the method further includes: if no adjacent cell with the network expected load not exceeding the preset load threshold of the cell exists in other RAT systems which the user terminal has the ability to access, the load balancing control device indicates the service base station to refuse to provide the service for the user terminal.
In another embodiment of the network load balancing control method, the method further includes:
if the user terminal has no ability to access other RAT systems, the load balancing control device indicates the service base station to refuse to provide the service for the user terminal.
In another embodiment based on any one of the above network load balancing control methods, the triggering, by the load balancing control apparatus, the user terminal to switch to the target serving cell for performing the service includes:
the load balancing control device sends a cell switching notification message to the user terminal according to the user identifier, wherein the cell switching notification message comprises the cell identifier of a target service cell to be switched; sending a cell switching request message to a target service cell base station, wherein the cell switching request message comprises a user identifier;
carrying out cell switching between the user terminal and the target service cell base station by a cell switching process;
and after the user terminal is switched to the target service cell, the user terminal initiates a service request to the base station of the target service cell again.
In another embodiment based on any one of the above network load balancing control methods, the method further includes:
when a user terminal initially attaches to a network, reporting the capability information of the user terminal to a service base station;
the service base station transmits the capability information of the user terminal to the load balancing control device;
the load balancing control device stores capability information of the user terminal.
An embodiment of the present invention further provides a load balancing control apparatus, including:
a receiving unit, configured to receive a service control request message reported by a serving base station, where the service control request message includes a service request and a cell identifier of a current serving cell; the service request comprises a user terminal identifier, a user identifier and service requirement information requested by the user terminal;
an obtaining unit, configured to obtain load information of a current serving cell, load information of an adjacent cell in the same RAT system, load information of an adjacent cell in different RAT systems, capability information of a user terminal, and radio resource information required to be occupied by a service demand according to a user terminal identifier, a user identifier, service demand information, and a cell identifier of the current serving cell in the service control request message received by the receiving unit;
the selecting unit is used for providing a target service cell of the service for the user terminal user according to the load information, the capability information of the user terminal and the wireless resource information required to be occupied by the service requirement acquired by the acquiring unit;
and the control unit is used for triggering the user terminal to switch to the target service cell to carry out the service.
In another embodiment based on the above load balancing control apparatus, the obtaining unit obtains, from the serving base station, load information of the current serving cell and radio resource information of a cell occupied to meet a service requirement, specifically according to the service requirement information and a cell identifier of the current serving cell; according to the instruction sent by the selection unit for acquiring the load information of each adjacent cell of the current service cell in the same RAT system and the wireless resource information of the cell required to be occupied to meet the service requirement, and according to the service requirement information and the cell identification of the current service cell, acquiring the load information of each adjacent cell of the current service cell in the same RAT system and the wireless resource information of the cell required to be occupied to meet the service requirement;
the selecting unit is used for identifying whether the network expected load of the current service cell exceeds the preset load threshold of the service cell after the current service cell provides the service for the user according to the load information of the current service cell acquired by the acquiring unit and the wireless resource information of the cell required to be occupied to meet the service requirement; if the network expected load of the current service cell does not exceed the preset load threshold of the service cell, the service cell is taken as a target service cell, and the service base station is indicated to process the service request; if the network expected load of the current service cell exceeds a preset load threshold of the service cell, indicating an acquisition unit to acquire load information of each adjacent cell of the current service cell and wireless resource information of a cell required to be occupied by meeting the service requirement in the same RAT system according to the service requirement information and the cell identifier of the current service cell; according to the load information of each adjacent cell in the same RAT system and the wireless resource information of the cell required to be occupied, which are acquired by the acquisition unit, identifying whether the adjacent cell exists in the same RAT system, wherein the expected network load of the adjacent cell does not exceed a preset load threshold of the cell after the service is provided for the user; if the adjacent cells of which the network expected load does not exceed the preset load threshold of the cell exist after the service is provided for the user, selecting one adjacent cell with the best signal quality from the adjacent cells of which the network expected load does not exceed the preset load threshold of the cell in the same RAT system as a target service cell, and then instructing a control unit to trigger the user terminal to switch to the target service cell to perform the service;
and the control unit is used for triggering the user terminal to switch to the target service cell to perform the service according to the instruction sent by the selection unit for triggering the user terminal to switch to the target service cell to perform the service.
In another embodiment based on the load balancing control device, the selecting unit, specifically, in the same RAT system, indicates that the obtaining unit obtains the capability information of the user terminal according to the user terminal identifier, and identifies whether the user terminal has the capability of accessing to other RAT systems according to the capability information of the user terminal, if there is no adjacent cell in which the network expected load does not exceed the preset load threshold of the cell after the service is provided for the user; if the user terminal has the capacity of accessing other RAT systems, selecting one RAT system from the other RAT systems which the user terminal has the capacity of accessing as a different RAT system, and indicating an acquisition unit to acquire load information of each adjacent cell of a current service cell in the different RAT systems and wireless resource information of occupied cells required for meeting service requirements according to the service requirement information and the cell identification of the current service cell; according to the load information of each adjacent cell in different RAT systems and the wireless resource information of the cell required to be occupied, which are acquired by the acquisition unit, identifying whether the adjacent cell exists in the different RAT systems, wherein the expected network load of the adjacent cell does not exceed a preset load threshold of the cell after the service is provided for the user; if the adjacent cells of which the network expected load does not exceed the preset load threshold of the cell exist after the service is provided for the user, selecting one adjacent cell with the best signal quality from the adjacent cells of which the network expected load does not exceed the preset load threshold of the cell in different RAT systems as a target service cell, and then instructing a control unit to execute the operation of triggering the user terminal to switch to the target service cell for the service;
the acquisition unit is used for acquiring the capability information of the user terminal according to the instruction for acquiring the capability information of the user terminal sent by the selection unit; and acquiring the load information of each adjacent cell of the current service cell in different RAT systems and the wireless resource information of the cell required to be occupied by meeting the service requirement according to the instruction which is sent by the selection unit and is used for acquiring the load information of each adjacent cell of the current service cell in different RAT systems and the wireless resource information of the cell required to be occupied by meeting the service requirement according to the service requirement information and the cell identification of the current service cell.
In another embodiment based on the above load balancing control apparatus, the selecting unit selects, according to a preset priority order among the RAT systems, another RAT system with the highest priority from the other RAT systems that the ue has the capability to access as a different RAT system.
In another embodiment based on the above load balancing control apparatus, the selecting unit, specifically, if there is no neighboring cell in different RAT systems where the network expected load does not exceed the preset load threshold of the cell after the service is provided for the user, selects another RAT system with the next priority from other RAT systems to which the user terminal has the capability of accessing as the different RAT system according to the preset priority order between the RAT systems, and instructs the obtaining unit to perform the operation of obtaining the load information of each neighboring cell of the current serving cell in the different RAT systems and the radio resource information of the occupied cell required to meet the service requirement according to the service requirement information and the cell identifier of the current serving cell.
In another embodiment based on the above load balancing control apparatus, the selecting unit is further configured to instruct the serving base station to refuse to provide the current service to the user terminal if no neighboring cell exists in other RAT systems to which the user terminal has the capability of accessing, where the network expected load after the current service is provided to the user does not exceed a preset load threshold of the cell.
In another embodiment based on the above load balancing control apparatus, the selecting unit is further configured to instruct the serving base station to refuse to provide the service to the user terminal if the user terminal does not have the capability to access another RAT system.
In another embodiment based on any of the above load balancing control apparatuses, the control unit specifically issues a cell handover notification message to the user terminal according to the user identifier received by the receiving unit, where the cell handover notification message includes a cell identifier of a target serving cell to be handed over to; and sending a cell switching request message to the target serving cell base station, wherein the cell switching request message comprises a user identifier.
In another embodiment based on any of the above load balancing control apparatuses, the receiving unit is further configured to receive capability information of the ue forwarded by the base station;
the load balancing control device also comprises a storage unit used for storing the capability information of the user terminal acquired by the acquisition unit.
An embodiment of the present invention further provides a network load balancing control system, including:
the user terminal is used for initiating a service request to the service base station in the current service cell, wherein the service request comprises a user terminal identifier, a user identifier and service requirement information requested by the user terminal;
the service base station is used for reporting a service control request message to the load balancing control device, wherein the service control request message comprises a service request and a cell identifier of a current service cell;
the load balancing control device is used for acquiring the load information of the current service cell, the load information of adjacent cells under the same Radio Access Technology (RAT) system, the load information of adjacent cells under different RAT systems, the capability information of the user terminal and the wireless resource information required to be occupied by service requirements according to the user terminal identifier, the user identifier, the service requirement information and the cell identifier of the current service cell, and selecting a target service cell providing the service for the user terminal user according to the load information of the current service cell, the load information of the adjacent cells under the same RAT system, the capability information of the user terminal and the wireless resource information required to be; and triggering the user terminal to switch to the target service cell to carry out the service.
In another embodiment based on the network load balancing control system, the serving base station is further configured to refuse to provide the current service to the user terminal according to an indication sent by the load balancing control device to refuse to provide the current service to the user terminal.
In another embodiment based on the network load balancing control system, the user terminal is further configured to receive a cell switching notification message issued by the load balancing control device, where the cell switching notification message includes a cell identifier of a target serving cell to be switched to; and carrying out cell switching with a target service cell base station by a cell switching process; and after the target service cell is switched to, a service request is initiated to the target service cell base station again.
The network load balancing control system also comprises a target service cell base station, which is used for receiving a cell switching request message sent by the load balancing control device, wherein the cell switching request message comprises a user identifier; and carrying out cell switching with a user terminal in a cell switching process; and receiving a service request sent by the user terminal.
In another embodiment based on any of the above network load balancing control systems, the ue is further configured to report capability information of the ue to the serving base station when the ue initially attaches to the network;
the service base station is also used for forwarding the capability information of the user terminal to the load balancing control device;
the load balancing control device is also used for storing the capability information of the user terminal.
In another embodiment based on any one of the foregoing network load balancing control systems, the load balancing control device is specifically a load balancing control device in any one of the foregoing load balancing control device embodiments.
According to the network load balancing control method, the network load balancing control system and the load balancing control device provided by the embodiment of the invention, in the process of initiating a service request by the user terminal, the target service cell of the user terminal is adaptively adjusted according to the load information of the current service cell, the load information of adjacent cells under the same RAT system, the load information of adjacent cells under different RAT systems, the service requirement and capability information of the terminal user and the like, the load balancing among the cells under the same RAT system and the cells under different RAT systems is dynamically realized, and the user experience and the network resource utilization rate of the terminal are improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
The invention will be more clearly understood from the following detailed description, taken with reference to the accompanying drawings, in which:
fig. 1 is a schematic structural diagram of an embodiment of a network load balancing control system according to the present invention.
Fig. 2 is a schematic structural diagram of an application embodiment of the network load balancing control system of the present invention.
Fig. 3 is a schematic structural diagram of another embodiment of the network load balancing control system according to the present invention.
Fig. 4 is a flowchart illustrating a network load balancing control method according to an embodiment of the present invention.
Fig. 5 is a flowchart illustrating a network load balancing control method according to another embodiment of the present invention.
Fig. 6 is a schematic structural diagram of an embodiment of the load balancing control apparatus of the present invention.
Fig. 7 is a schematic structural diagram of another embodiment of the load balancing control apparatus of the present invention.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
Fig. 1 is a schematic structural diagram of an embodiment of a network load balancing control system according to the present invention, and as shown in fig. 1, the network load balancing control system of the embodiment includes a user terminal, a serving base station, and a load balancing control apparatus. Wherein:
the user terminal is used for initiating a service request (namely, a base station covering the current service cell) to the service base station of the current service cell in the current service cell, wherein the service request comprises a user terminal identifier, a user identifier and service requirement information requested by the user terminal.
Wherein, the user terminal identification only marks one user terminal; the user identification uniquely marks one user; the service requirement information may be a service identification, a service name or a type.
The service base station is used for reporting a service control request message to the load balancing control device, wherein the service control request message comprises a service request and a cell identifier of a current service cell.
In the embodiment of the invention, each base station can cover more than one cell.
The load balancing control device is used for acquiring the load information of the current service cell, the load information of adjacent cells under the same Radio Access Technology (RAT) system, the load information of adjacent cells under different RAT systems, the capability information of the user terminal and the wireless resource information required to be occupied by service requirements according to the user terminal identifier, the user identifier, the service requirement information and the cell identifier of the current service cell reported by the user terminal, and selecting a target service cell providing the service for the user terminal user according to the load information of the current service cell, the load information of adjacent cells under the same RAT system, the capability information of the user terminal and the wireless resource information required to be occupied; and triggering the user terminal to switch to the target service cell to carry out the service. The load balancing control apparatus may be implemented based on the structure of the load balancing control apparatus according to any one of fig. 6 and 7.
Fig. 2 is a schematic structural diagram of an application embodiment of the network load balancing control system of the present invention, as shown in fig. 2, the application embodiment may include a plurality of RAT systems, wherein one RAT system may include a plurality of base stations, and the load balancing control device unifies and coordinates operations of the RAT systems and the base stations.
In the network load balancing control system provided in the embodiment of the present invention, in the process of initiating a service request by a user terminal, a target serving cell of the user terminal is adaptively adjusted according to current serving cell load information, neighboring cell load information under the same RAT system, neighboring cell load information under different RAT systems, a service requirement and capability information of the terminal user, and the like, so as to dynamically realize load balancing between cells under the same RAT system and between cells under different RAT systems, and improve user experience and network resource utilization rate of the terminal.
In another embodiment of the network load balancing control system according to the present invention, the serving base station is further configured to refuse to provide the current service to the user terminal after receiving an instruction sent by the load balancing control device to refuse to provide the current service to the user terminal.
Fig. 3 is a schematic structural diagram of another embodiment of the network load balancing control system according to the present invention. In this embodiment of the present invention,
the user terminal is also used for receiving a cell switching notification message sent by the load balancing control device, wherein the cell switching notification message comprises a cell identifier of a target service cell to be switched; and carrying out cell switching with a target service cell base station by a cell switching process; and after the target service cell is switched to, a service request is initiated to the target service cell base station again.
As shown in fig. 3, the network load balancing control system further includes a target serving cell base station, configured to receive a cell handover request message sent by the load balancing control apparatus, where the cell handover request message includes a user identifier; and carrying out cell switching with a user terminal in a cell switching process; and receiving a service request sent by the user terminal.
In another embodiment of the network load balancing control system according to the present invention, the ue is further configured to report capability information of the ue to the serving base station when the ue initially attaches to the network.
The service base station is also used for forwarding the capability information of the user terminal to the load balancing control device.
The load balancing control device is also used for storing the capability information of the user terminal.
Fig. 4 is a schematic flowchart of an embodiment of a network load balancing control method according to the present invention, and as shown in fig. 4, the network load balancing control method of the embodiment includes:
101, a user terminal initiates a service request to a serving base station of a current serving cell in the current serving cell, where the service request includes a user terminal identifier, a user identifier, and service requirement information requested by the user terminal.
102, the service base station reports the service control request message to a load balancing control device, where the service control request message includes a service request reported by a user terminal and a cell identifier of a current serving cell. The cell id uniquely identifies a serving cell.
103, the load balancing control device obtains the load information of the current serving cell, the load information of the neighboring cells under the same RAT system, the load information of the neighboring cells under different RAT systems, the capability information of the user terminal and the radio resource information required to be occupied by the service demand according to the user terminal identifier, the user identifier, the service demand information and the cell identifier of the current serving cell, and selects the target serving cell providing the service for the user terminal user.
104, the load balancing control device triggers the user terminal to switch to the target service cell to perform the service.
In the network load balancing control method provided in the embodiment of the present invention, in the process of initiating a service request by a user terminal, a target serving cell of the user terminal is adaptively adjusted according to current serving cell load information, neighboring cell load information under the same RAT system, neighboring cell load information under different RAT systems, a service requirement and capability information of the terminal user, and the like, so that load balancing between cells under the same RAT system and between cells under different RAT systems is dynamically achieved, and user experience of the terminal and a network resource utilization rate are improved.
Fig. 5 is a schematic flowchart of another embodiment of the network load balancing control method of the present invention, and as shown in fig. 5, the network load balancing control method of the embodiment includes:
a user terminal initiates a service request to a serving base station of a current serving cell at 201, where the service request includes a user terminal identifier, a user identifier, and service requirement information requested by the user terminal.
202, the service base station reports the service control request message to the load balancing control device, where the service control request message includes a service request reported by the user terminal and a cell identifier of the current serving cell. The cell id uniquely identifies a serving cell.
And 203, the load balancing control device obtains the load information of the current serving cell and the radio resource information of the cell required to be occupied to meet the service requirement, for example, the radio resource occupation situation, from the serving base station of the cell according to the service requirement information and the cell identifier of the current serving cell.
In a specific application, the load balancing control device may mark a video service according to a service identifier in the service demand information, and obtain, from the current serving cell, a radio resource occupation condition of the cell after the video service marked by the identifier is added to the current cell.
And 204, identifying whether the network expected load of the current service cell exceeds the preset load threshold of the service cell after the current service cell provides the service for the user according to the load information of the current service cell and the wireless resource information of the cell required to be occupied by the load balancing control device.
If the network expected load of the current serving cell does not exceed the preset load threshold of the serving cell, operation 205 is performed, otherwise operation 206 is performed.
The load balancing control apparatus 205 instructs the serving cell serving base station to process the service request, with the serving cell being the target serving cell.
206, the load balancing control device obtains the load information of each neighboring cell of the current serving cell in the same RAT system and the radio resource information of the cell required to meet the service requirement according to the service requirement information and the cell identifier of the current serving cell.
207, the load balancing control device identifies whether there is an adjacent cell in the same RAT system, for which the network expected load does not exceed the preset load threshold of the cell, after the service is provided for the user according to the load information of each adjacent cell in the same RAT system and the radio resource information of the cell required to be occupied.
If the adjacent cell with the expected network load not exceeding the preset cell load threshold exists after the service is provided for the user, 208 operation is executed, otherwise 212 operation is executed.
208, the load balancing control device instructs the serving bs to send system measurement notification to the ue.
209, the serving base station receives the cell measurement report reported by the user equipment after performing system measurement and forwards the cell measurement report to the load balancing control device, where the cell measurement report includes the signal strength of each neighboring cell.
And 210, selecting an adjacent cell with the maximum signal strength from the adjacent cells of which the network expected load in the RAT system does not exceed the preset cell load threshold as a target serving cell by the load balance control device according to the signal strength of each adjacent cell in the cell measurement report.
211, the load balancing control device triggers the user equipment to switch to the target serving cell to perform the operation of the service.
The operation comprises the following procedures:
1) the load balancing control device sends a cell switching notification message to the user terminal according to the user identifier reported by the user terminal, wherein the cell switching notification message comprises a cell identifier of a target service cell to be switched; and sending a cell switching request message to the target serving cell base station, wherein the cell switching request message comprises a user identifier.
2) And carrying out cell switching between the user terminal and the target service cell base station by a cell switching process.
3) And after the user terminal is switched to the target service cell, the user terminal initiates a service request to the base station of the target service cell again.
212, the load balancing control device obtains the capability information of the ue according to the ue identity, for example, the type of the network that the ue supports access, including a second generation mobile communication technology (2G) network, a third generation mobile communication technology (3G) network, a fourth generation mobile communication technology (4G) network, and so on.
213, the load balancing control device identifies whether the ue has the capability of accessing other RAT systems according to the capability information of the ue. If the ue has the capability to access other RAT systems, operation 214 is performed, otherwise if the ue has no capability to access other RAT systems, operation 217 is performed.
214, the load balancing control device selects one RAT system from other RAT systems that the ue has the capability to access as a different RAT system, and obtains the load information of each neighboring cell of the current serving cell in the different RAT system and the radio resource information of the occupied cell required to meet the service requirement according to the service requirement information and the cell identifier of the current serving cell.
In a specific example, one RAT system with the highest priority may be selected as the different RAT system from the other RAT systems that the ue has the capability to access according to a preset priority order between the RAT systems.
215, the load balancing control device identifies whether there is an adjacent cell in the different RAT system, in which the network expected load does not exceed the preset load threshold of the cell, after the service is provided for the user according to the load information of each adjacent cell in the different RAT systems and the radio resource information of the cell required to be occupied.
If the adjacent cell with the expected network load not exceeding the preset cell load threshold exists after the service is provided for the user, 208 operation is executed, otherwise 216 operation is executed.
216, the load balancing control device selects another RAT system with the next priority from the other RAT systems that the user terminal has the capability to access as a different RAT system according to the preset priority order between the RAT systems, and performs 215 the operation of obtaining the load information of each neighboring cell of the current serving cell in the different RAT systems and the radio resource information of the occupied cell required to meet the service requirement according to the service requirement information and the cell identifier of the current serving cell.
If no adjacent cell, which is not the cell with the expected load exceeding the preset load threshold after the service is provided for the user, exists in the other RAT systems to which the user terminal has the capability to access after traversing the other RAT systems according to the preset priority order between the RAT systems through operations 215 and 216, then operation 217 is performed.
217, the load balancing control device instructs the serving base station to refuse to provide the service for the user equipment. Meanwhile, the service base station issues a notification message of rejecting service to the user terminal.
In each embodiment of the present invention, the load information may be radio resource occupation information of a serving cell, and may also be the number of terminals accessing the serving cell; the load threshold may be specifically determined by the network equipment carrying capacity of the serving cell and network load change statistical information.
In embodiments of the present invention, the network expected load represents the load of the current load of the serving cell after adding the service requested by the user terminal.
In another embodiment based on the above network load balancing control method, before the embodiments in fig. 1 and fig. 2, the following operations are further included:
1) when the user terminal is initially attached to the network, the capability information of the user terminal is reported to the service base station.
2) The service base station transmits the capability information of the user terminal to a load balancing control device.
3) The load balancing control device stores capability information of the user terminal.
Fig. 6 is a schematic structural diagram of an embodiment of the load balancing control device of the present invention, where the load balancing control device of this embodiment can implement corresponding functions of the load balancing control device in the network load balancing control method and system according to the foregoing embodiments of the present invention. As shown in fig. 5, the load balancing control apparatus of this embodiment includes an accepting unit, an acquiring unit, a storing unit, and a distributing unit. Wherein:
a receiving unit, configured to receive a service control request message reported by a serving base station of a current serving cell, where the service control request message includes a service request reported by a user terminal and a cell identifier of the current serving cell; the service request comprises a user terminal identification, a user identification and service requirement information requested by the user terminal.
And an obtaining unit, configured to obtain, according to the user terminal identifier, the user identifier, the service demand information, and the cell identifier of the current serving cell in the service control request message received by the receiving unit, load information of the current serving cell, load information of an adjacent cell in an RAT system of the same radio access technology, load information of adjacent cells in different RAT systems, capability information of the user terminal, and radio resource information required to be occupied by the service demand.
And the selecting unit is used for providing the target service cell of the service for the user terminal user according to the load information, the capability information of the user terminal and the wireless resource information required to be occupied by the service requirement which are acquired by the acquiring unit.
And the control unit is used for triggering the user terminal to switch to the target service cell to carry out the service.
In the load balancing control device provided in the embodiment of the present invention, in the process of initiating a service request by a user terminal, a target serving cell of the user terminal is adaptively adjusted according to load information of a current serving cell, load information of neighboring cells under the same RAT system, load information of neighboring cells under different RAT systems, service requirements and capability information of the terminal user, and the like, so that load balancing between cells under the same RAT system and between cells under different RAT systems is dynamically achieved, and user experience of the terminal and network resource utilization rate are improved.
In another embodiment based on the load balancing control apparatus, the obtaining unit obtains, from the serving base station, load information of a current serving cell and radio resource information of a cell occupied for meeting a service requirement, specifically according to the service requirement information and a cell identifier of the current serving cell; and acquiring the load information of each adjacent cell of the current service cell and the wireless resource information of the cell required to be occupied by meeting the service requirement in the same RAT system according to the instruction which is sent by the selection unit and is used for acquiring the load information of each adjacent cell of the current service cell and the wireless resource information of the cell required to be occupied by meeting the service requirement in the same RAT system and according to the service requirement information and the cell identification of the current service cell.
The selecting unit identifies whether the network expected load of the current service cell exceeds a preset load threshold of the service cell after the current service cell provides the service for the user according to the load information of the current service cell acquired by the acquiring unit and the wireless resource information of the cell required to be occupied to meet the service requirement; if the network expected load of the current service cell does not exceed the preset load threshold of the service cell, taking the service cell as a target service cell, and indicating the service base station of the target service cell to process a service request; if the network expected load of the current service cell exceeds a preset load threshold of the service cell, indicating an acquisition unit to acquire load information of each adjacent cell of the current service cell and wireless resource information of a cell required to be occupied by meeting the service requirement in the same RAT system according to the service requirement information and the cell identifier of the current service cell; according to the load information of each adjacent cell in the same RAT system and the wireless resource information of the cell required to be occupied, which are acquired by an acquisition unit, identifying whether the adjacent cell exists in the same RAT system, wherein the expected network load of the adjacent cell does not exceed a preset load threshold of the cell after the service is provided for the user; if the adjacent cells of which the network expected load does not exceed the preset load threshold of the cell exist after the service is provided for the user, selecting one adjacent cell with the best signal quality from the adjacent cells of which the network expected load does not exceed the preset load threshold of the cell in the same RAT system as a target service cell, and then instructing the control unit to trigger the user terminal to switch to the target service cell to perform the service.
The control unit triggers the user terminal to switch to the target service cell to perform the service according to the instruction sent by the selection unit for triggering the user terminal to switch to the target service cell to perform the service.
In another embodiment based on the load balancing control device, when the selecting unit does not have an adjacent cell which provides the service for the user and the expected network load does not exceed a preset cell load threshold in the same RAT system, the selecting unit indicates the obtaining unit to obtain the capability information of the user terminal according to the user terminal identifier, and identifies whether the user terminal has the capability of accessing other RAT systems according to the capability information of the user terminal; if the user terminal has the capability of accessing other RAT systems, selecting one of the other RAT systems which the user terminal has the capability of accessing as a different RAT system, and instructing an acquisition unit to acquire load information of each adjacent cell of a current service cell in the different RAT systems and wireless resource information of occupied cells required for meeting service requirements according to the service requirement information and the cell identification of the current service cell; according to the load information of each adjacent cell in the different RAT systems and the wireless resource information of the cells required to be occupied, which are acquired by the acquisition unit, identifying whether the adjacent cells exist in the different RAT systems, wherein the expected network load of the adjacent cells does not exceed a preset load threshold of the cells after the service is provided for the user; if the adjacent cells of which the network expected load does not exceed the preset load threshold of the cell exist after the service is provided for the user, selecting one adjacent cell with the best signal quality from the adjacent cells of which the network expected load does not exceed the preset load threshold of the cell in the different RAT systems as a target service cell, and then instructing the control unit to execute the operation of triggering the user terminal to switch to the target service cell for the service.
The acquiring unit acquires the capability information of the user terminal according to the indication for acquiring the capability information of the user terminal sent by the selecting unit; and acquiring the load information of each adjacent cell of the current service cell in different RAT systems and the wireless resource information of the cell required to be occupied by meeting the service requirement according to the instruction of acquiring the load information of each adjacent cell of the current service cell in different RAT systems and the wireless resource information of the cell required to be occupied by meeting the service requirement, which are sent by the selection unit, and according to the service requirement information reported by the user terminal and the cell identifier of the current service cell.
In another embodiment based on the above load balancing control apparatus, the selecting unit specifically selects, according to a preset priority order between RAT systems, for example, a 4G priority is higher than a 3G priority, and a 3G priority is higher than a 2G priority, another RAT system with a highest priority from among the other RAT systems that the user terminal has the capability of accessing as a different RAT system.
In another embodiment based on the load balancing control apparatus, the selecting unit does not have an adjacent cell in the different RAT systems where the network expected load does not exceed a preset load threshold of the cell after the service is provided for the user, selects another RAT system with a next priority from other RAT systems to which the user terminal has the capability of accessing as the different RAT system according to a preset priority order between the RAT systems, and instructs the obtaining unit to perform an operation of obtaining load information of each adjacent cell of the current serving cell in the different RAT systems and radio resource information of a cell occupied by meeting the service requirement according to the service requirement information and the cell identifier of the current serving cell.
In another embodiment based on the load balancing control apparatus, the selecting unit is further configured to instruct the serving base station to refuse to provide the current service to the user terminal if no neighboring cell exists in any other RAT system to which the user terminal has the capability of accessing, where the neighboring cell has an expected network load that does not exceed a preset cell load threshold after the current service is provided to the user terminal.
In another embodiment based on the load balancing control apparatus, the selecting unit is further configured to instruct the serving base station to refuse to provide the service to the ue if the ue does not have the capability to access another RAT system.
In another embodiment based on any of the above load balancing control apparatuses, the control unit issues a cell switching notification message to the user terminal according to the user identifier received by the receiving unit, where the cell switching notification message includes a cell identifier of a target serving cell to be switched to; and sending a cell switching request message to the target serving cell base station, wherein the cell switching request message comprises a user identifier.
Fig. 7 is a schematic structural diagram of another embodiment of the load balancing control apparatus of the present invention, and as shown in fig. 7, the receiving unit in this embodiment is further configured to receive capability information of the user terminal forwarded by the serving base station.
Compared with the embodiment of fig. 6, the load balancing control apparatus of this embodiment further includes a storage unit, configured to store the capability information of the user terminal acquired by the acquisition unit.
Those of ordinary skill in the art will understand that: all or part of the steps for implementing the method embodiments may be implemented by hardware related to program instructions, and the program may be stored in a computer readable storage medium, and when executed, the program performs the steps including the method embodiments; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.
The method, system of the present invention may be implemented in a number of ways. For example, the methods and systems of the present invention may be implemented in software, hardware, firmware, or any combination of software, hardware, and firmware. The above-described order for the steps of the method is for illustrative purposes only, and the steps of the method of the present invention are not limited to the order specifically described above unless specifically indicated otherwise. Furthermore, in some embodiments, the present invention may also be embodied as a program recorded in a recording medium, the program including machine-readable instructions for implementing a method according to the present invention. Thus, the present invention also covers a recording medium storing a program for executing the method according to the present invention.
The description of the present invention has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to practitioners skilled in this art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Claims (19)

1. A network load balancing control method is characterized by comprising the following steps:
a user terminal initiates a service request to a service base station in a current service cell, wherein the service request comprises a user terminal identifier, a user identifier and service requirement information requested by the user terminal;
the service base station reports a service control request message to a load balancing control device, wherein the service control request message comprises the service request and the cell identification of the current service cell;
the load balancing control device acquires the load information of the current service cell, the load information of adjacent cells under the same Radio Access Technology (RAT) system, the load information of adjacent cells under different RAT systems, the capability information of the user terminal and the wireless resource information required to be occupied by the service demand according to the user terminal identification, the user identification, the service demand information and the cell identification of the current service cell, and selects a target service cell providing the service for the user terminal user according to the load information of the current service cell, the load information of the adjacent cells under the same RAT system, the capability information of the user terminal and the wireless resource information required to be occupied by the service demand; the method specifically comprises the following steps:
acquiring load information of the current service cell and wireless resource information of a cell required to be occupied to meet the service requirement from the service base station according to the service requirement information and the cell identifier of the current service cell;
identifying whether the network expected load of the current service cell exceeds a preset load threshold after the current service cell provides the service for the user; if the preset load threshold is not exceeded, taking the serving cell as a target serving cell; if the current service cell exceeds the preset load threshold, acquiring load information of each adjacent cell of the current service cell in the same RAT system according to the cell identification of the current service cell; according to the load information of each adjacent cell of the current service cell and the wireless resource information in the same RAT system, identifying whether the adjacent cell exists in the same RAT system, wherein the expected network load of the adjacent cell does not exceed a preset load threshold of the cell after the service is provided for the user;
if yes, selecting the adjacent cell with the best signal quality as a target service cell; if not, acquiring the capability information of the user terminal according to the user terminal identification, and identifying whether the user terminal has the capability of accessing other RAT systems;
if the access to other RAT systems is possible, selecting one system from the RAT systems as a different RAT system, and acquiring load information of each adjacent cell of the current service cell in the different RAT systems according to the cell identification of the current service cell; according to the load information of each adjacent cell in the different RAT systems and the wireless resource information, identifying whether the adjacent cell exists in the different RAT systems, wherein the expected network load of the adjacent cell does not exceed a preset load threshold of the cell after the service is provided for the user; if yes, selecting the adjacent cell with the best signal quality as a target service cell;
and the load balancing control device triggers the user terminal to switch to the target service cell to carry out the service.
2. The method of claim 1, wherein selecting a neighbor cell with the best signal quality as the target serving cell from neighbor cells in the same RAT system whose network expected load does not exceed a cell preset load threshold comprises: the load balancing control device indicates the service base station to send a system measurement notification to the user terminal;
the service base station receives a cell measurement report reported by the user terminal after system measurement and forwards the cell measurement report to the load balancing control device, wherein the cell measurement report comprises the signal intensity of each adjacent cell;
and the load balancing control device selects an adjacent cell with the maximum signal strength from the adjacent cells of which the network expected load does not exceed a preset cell load threshold in the same RAT system as a target service cell according to the signal strength of each adjacent cell in the cell measurement report.
3. The method of claim 1, wherein selecting one of the other RAT systems that the ue has the capability to access as a different RAT system comprises:
and according to a preset priority order among the RAT systems, selecting one other RAT system with the highest priority from the other RAT systems which the user terminal has the capability of accessing as a different RAT system.
4. The method of claim 1, further comprising:
if there is no adjacent cell in the different RAT systems, where the network expected load does not exceed the preset load threshold of the cell after the service is provided for the user, the load balancing control device selects another RAT system with the next priority from the other RAT systems that the user terminal can access as a different RAT system according to the preset priority sequence between the RAT systems, and executes the operation of obtaining the load information of each adjacent cell of the current service cell in the different RAT systems and the radio resource information of the cell required to be occupied by meeting the service requirement according to the service requirement information and the cell identifier of the current service cell.
5. The method of claim 1, further comprising: if no adjacent cell with the network expected load not exceeding a preset cell load threshold exists in other RAT systems which the user terminal has the ability to access, the load balancing control device indicates the service base station to refuse to provide the service for the user terminal.
6. The method of claim 1, further comprising:
and if the user terminal does not have the capacity of accessing other RAT systems, the load balancing control device indicates the service base station to refuse to provide the service for the user terminal.
7. The method according to any one of claims 1 to 6, wherein the triggering, by the load balancing control device, the user equipment to switch to the target serving cell for the current service includes:
the load balancing control device sends a cell switching notification message to the user terminal according to the user identifier, wherein the cell switching notification message comprises a cell identifier of a target service cell to be switched; sending a cell switching request message to the target serving cell base station, wherein the cell switching request message comprises the user identification;
the user terminal and the target service cell base station perform cell switching through a cell switching process;
and after the user terminal is switched to the target service cell, the user terminal initiates a service request to the base station of the target service cell again.
8. The method of any one of claims 1 to 6, further comprising:
when the user terminal initially attaches to the network, reporting the capability information of the user terminal to the service base station;
the service base station forwards the capability information of the user terminal to the load balancing control device;
the load balancing control device stores the capability information of the user terminal.
9. A load balancing control apparatus, comprising:
a receiving unit, configured to receive a service control request message reported by a serving base station, where the service control request message includes the service request and a cell identifier of a current serving cell; the service request comprises a user terminal identification, a user identification and service requirement information requested by the user terminal;
an obtaining unit, configured to obtain, according to the user terminal identifier, the user identifier, the service requirement information, and the cell identifier of the current serving cell in the service control request message received by the receiving unit, load information of the current serving cell, load information of an adjacent cell in an RAT system of the same radio access technology, load information of an adjacent cell in different RAT systems, capability information of the user terminal, and radio resource information required to be occupied by the service requirement;
a selecting unit, configured to provide a target serving cell of the service for the user equipment according to the load information, the capability information of the user equipment, and the radio resource information required to be occupied by the service requirement, where the target serving cell is obtained by the obtaining unit;
the acquiring unit acquires load information of the current serving cell and wireless resource information of a cell required to be occupied to meet the service requirement from the serving base station according to the service requirement information and the cell identifier of the current serving cell; the selection unit identifies whether the network expected load of the current service cell exceeds a preset load threshold after the current service cell provides the service for the user; if the preset load threshold is not exceeded, the selection unit takes the service cell as a target service cell; if the current service cell exceeds the preset load threshold, the obtaining unit obtains the load information of each adjacent cell of the current service cell in the same RAT system according to the cell identification of the current service cell, and the selecting unit identifies whether the adjacent cell which does not exceed the preset load threshold of the cell is present in the same RAT system after the service is provided for the user according to the load information of each adjacent cell of the current service cell in the same RAT system and the wireless resource information; if the neighbor cell exists, the selecting unit selects the neighbor cell with the best signal quality as a target serving cell; if not, the obtaining unit obtains the capability information of the user terminal according to the user terminal identification and identifies whether the user terminal has the capability of accessing other RAT systems; if the access to other RAT systems is possible, the selecting unit selects one RAT system from the RAT systems as a different RAT system, and the acquiring unit acquires load information of each adjacent cell of the current service cell in the different RAT systems according to the cell identification of the current service cell; the selecting unit identifies whether an adjacent cell exists in the different RAT systems, wherein the expected network load of the adjacent cell does not exceed a preset load threshold of the cell after the adjacent cell provides the service for the user according to the load information of each adjacent cell in the different RAT systems and the wireless resource information; if the neighbor cell exists, the selecting unit selects the neighbor cell with the best signal quality as a target serving cell;
and the control unit is used for triggering the user terminal to be switched to the target service cell to carry out the service.
10. The apparatus of claim 9, wherein the selecting unit selects, as the different RAT system, one RAT system with a highest priority from the other RAT systems that the ue has the capability to access, in particular according to a preset priority order between the RAT systems.
11. The apparatus of claim 9, wherein the selecting unit, specifically, if there is no neighboring cell in the different RAT systems where network expected load does not exceed a preset load threshold of a cell after the service is provided for the user, selects another RAT system with a next priority from other RAT systems to which the user terminal has the capability of accessing as the different RAT system according to a preset priority order between the RAT systems, and then instructs the obtaining unit to perform operations of obtaining load information of neighboring cells of the current serving cell in the different RAT systems and radio resource information of cells occupied to meet the service requirement.
12. The apparatus of claim 9, wherein the selecting unit is further configured to instruct the serving base station to reject providing the current service to the user terminal if no neighboring cell with an expected network load that does not exceed a preset cell load threshold exists in any other RAT system that the user terminal has the capability of accessing.
13. The apparatus of claim 9, wherein the selecting unit is further configured to instruct the serving base station to reject providing the service for the ue if the ue does not have the capability to access other RAT systems.
14. The apparatus according to any one of claims 9 to 13, wherein the control unit issues a cell handover notification message to the ue specifically according to the ue received by the receiving unit, where the cell handover notification message includes a cell id of a target serving cell to be handed over to; and sending a cell switching request message to the target serving cell base station, wherein the cell switching request message comprises the user identification.
15. The apparatus according to any of claims 9 to 13, wherein the receiving unit is further configured to receive capability information of the user terminal forwarded by the serving base station;
the device also comprises a storage unit used for storing the capability information of the user terminal acquired by the acquisition unit.
16. A network load balancing control system, comprising:
the user terminal is used for initiating a service request to the service base station in the current service cell, wherein the service request comprises a user terminal identifier, a user identifier and service requirement information requested by the user terminal;
the service base station is used for reporting a service control request message to the load balancing control device, wherein the service control request message comprises the service request and the cell identifier of the current service cell;
and a load balancing control apparatus as claimed in any one of claims 9 to 15.
17. The system according to claim 16, wherein the serving base station is further configured to receive an indication sent by the load balancing control device to reject providing the current service for the user terminal, and reject providing the current service for the user terminal.
18. The system according to claim 16, wherein said ue is further configured to receive a cell handover notification message sent by said load balancing control apparatus, where the cell handover notification message includes a cell identifier of a target serving cell to be handed over to; and carrying out cell switching with a target service cell base station by a cell switching process; after the target service cell is switched to, a service request is initiated to the target service cell base station again;
the system also comprises a target service cell base station, which is used for receiving a cell switching request message sent by the load balancing control device, wherein the cell switching request message comprises the user identification; and carrying out cell switching with the user terminal in a cell switching process; and receiving a service request sent by the user terminal.
19. The system according to any of claims 16 to 18, wherein said ue is further configured to report capability information of the ue to said serving base station when initially attaching to a network;
the service base station is also used for forwarding the capability information of the user terminal to the load balancing control device;
the load balancing control device is also used for storing the capability information of the user terminal.
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