CN112654068B - Reselection control method of mobile terminal and base station - Google Patents
Reselection control method of mobile terminal and base station Download PDFInfo
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- CN112654068B CN112654068B CN201910970148.0A CN201910970148A CN112654068B CN 112654068 B CN112654068 B CN 112654068B CN 201910970148 A CN201910970148 A CN 201910970148A CN 112654068 B CN112654068 B CN 112654068B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/08—Load balancing or load distribution
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/08—Reselecting an access point
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/16—Performing reselection for specific purposes
- H04W36/22—Performing reselection for specific purposes for handling the traffic
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/26—Reselection being triggered by specific parameters by agreed or negotiated communication parameters
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Abstract
The embodiment of the application provides a reselection control method of a mobile terminal and a base station, wherein the method is applied to the base station of a second cell and comprises the following steps: if a resource state request sent by a first cell is received, sending a resource state parameter of a second cell to the first cell as a first resource state parameter, wherein the first resource state parameter is used for determining whether a mobile terminal in the first cell is balanced to the second cell; if the working mode of the first cell is the target mode, setting the reselection priority of the first cell as the lowest priority corresponding to the target mode in the reselection configuration information stored in the second cell; and if the mobile terminal in the second cell is detected to release the wireless resources, sending a wireless resource release message carrying reselection configuration information to the mobile terminal, wherein the reselection configuration information is used for carrying out cell reselection on the mobile terminal. The method and the device help to improve the equalization effect.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to a reselection control method for a mobile terminal and a base station.
Background
In a mobile communication system, a plurality of cells are divided under each base station, and overlapping or partially overlapping scenes exist in coverage areas between cells under the same base station or different base stations, namely multi-carrier hierarchical networking. Different cells are configured with different priorities, and coverage signals and traffic models of the cells are different, so that the number of mobile terminals in a part of cells is too large, namely the cells are in a high-load state.
In the prior art, in order to reduce the number of mobile terminals in a high-load cell, a load balancing method may be generally adopted. For example, for a source cell, first, it is determined whether the number of mobile terminals served by the source cell is greater than a preset terminal number threshold; then, if the number of the mobile terminals served by the source cell is greater than a preset terminal number threshold, transferring part of the mobile terminals served by the source cell to the target cell.
After the inventor researches the above scheme, it is found that when part of the mobile terminals served by the source cell are transferred to the target cell, part of idle mobile terminals of the target cell are also transferred to the source cell through reselection, resulting in poor equalization effect.
Disclosure of Invention
In view of the above problems, the present application is proposed to provide a reselection control method for a mobile terminal and a base station that solve the above problems, or at least partially solve the above problems.
According to a first aspect of the present application, there is provided a reselection control method for a mobile terminal, which is applied to a base station of a second cell, and includes:
if a resource state request sent by a first cell is received, sending a resource state parameter of a second cell to the first cell as a first resource state parameter, wherein the first resource state parameter is used for determining whether a mobile terminal in the first cell is balanced to the second cell;
if the working mode of the first cell is a target mode, setting the reselection priority of the first cell as the lowest priority corresponding to the target mode in reselection configuration information stored in the second cell;
and if detecting that the mobile terminal in the coverage area of the second cell releases the wireless resources, sending a wireless resource release message carrying the reselection configuration information to the mobile terminal, wherein the reselection configuration information is used for performing cell reselection on the mobile terminal.
Optionally, setting the reselection priority of the first cell to the lowest priority corresponding to the target system in the reselection configuration information stored in the second cell includes:
If the first resource state parameter is smaller than a preset first resource state threshold, in reselection configuration information stored in the second cell, setting the reselection priority of the first cell as the lowest priority corresponding to the target system.
Optionally, before setting the reselection priority of the first cell to the lowest priority corresponding to the target system in the reselection configuration information stored in the second cell, the method further includes:
receiving a resource state parameter sent by the first cell to obtain a second resource state parameter;
in the reselection configuration information stored in the second cell, setting the reselection priority of the first cell as the lowest priority corresponding to the target system includes:
and if the difference obtained by subtracting the first resource state parameter from the second resource state parameter is larger than a preset second resource state threshold, setting the reselection priority of the first cell as the lowest priority corresponding to the target system in the reselection configuration information stored in the second cell.
Optionally, setting the reselection priority of the first cell to the lowest priority corresponding to the target system in the reselection configuration information stored in the second cell includes:
Determining a cell with a working standard as the target standard to obtain a target cell list, wherein the target cell list comprises the first cell and the second cell;
for each target cell except the first cell in the target cell list, if the reselection priority of the target cell is not the highest priority corresponding to the target system, modifying the reselection priority of the first cell in the reselection configuration information stored in the second cell into the lowest priority corresponding to the target system, and increasing the reselection priority of the target cell.
Optionally, after setting the reselection priority of the first cell to the lowest priority corresponding to the target system in the reselection configuration information stored in the second cell, the method further includes:
and after a preset time or after receiving an end message sent by the first cell, restoring the reselection configuration information stored in the second cell to default reselection configuration information.
According to a second aspect of the present application, there is provided a base station comprising:
a terminal balancing module, configured to send a resource state parameter of a second cell to a first cell as a first resource state parameter if a resource state request sent by the first cell is received, where the first resource state parameter is used to determine whether to balance a mobile terminal in the first cell to the second cell;
A reselection priority setting module, configured to set, if the working format of the first cell is a target format, the reselection priority of the first cell as a lowest priority corresponding to the target format in reselection configuration information stored in the second cell;
and the cell reselection control module is configured to send a radio resource release message carrying reselection configuration information to the mobile terminal if it is detected that the mobile terminal in the coverage area of the second cell releases radio resources, where the reselection configuration information is used to perform cell reselection on the mobile terminal.
Optionally, the reselection priority setting module includes:
a first reselection priority setting sub-module, configured to set, in reselection configuration information stored in the second cell, a reselection priority of the first cell to a lowest priority corresponding to the target system if the first resource state parameter is smaller than a preset first resource state threshold.
Optionally, the base station further includes:
a second resource state parameter receiving module, configured to receive the resource state parameter sent by the first cell to obtain a second resource state parameter;
the reselection priority setting module comprises:
And the second reselection priority setting submodule is used for setting the reselection priority of the first cell as the lowest priority corresponding to the target system in the reselection configuration information stored in the second cell if the difference obtained by subtracting the first resource state parameter from the second resource state parameter is larger than a preset second resource state threshold.
Optionally, the reselection priority setting module or the first reselection priority setting sub-module includes:
a target cell list generating unit, configured to determine a cell with a target system as a working system, and obtain a target cell list, where the target cell list includes the first cell and the second cell;
a reselection priority setting unit, configured to, for each target cell other than the first cell in the target cell list, if the reselection priority of the target cell is not the highest priority corresponding to the target standard, modify, in reselection configuration information stored in the second cell, the reselection priority of the first cell to the lowest priority corresponding to the target standard, and increase the reselection priority of the target cell.
Optionally, the base station further includes:
and a reselection configuration information recovery module, configured to recover, after a preset time or after receiving an end message sent by the first cell, the reselection configuration information stored in the second cell to be default reselection configuration information.
The embodiment of the application has the following advantages:
according to the reselection control method and the base station of the mobile terminal in the embodiment of the application, the method is applied to the base station of a second cell, if a resource state request sent by a first cell is received, a resource state parameter of the second cell is sent to the first cell as a first resource state parameter, and the first resource state parameter is used for determining whether to balance the mobile terminal in the first cell to the second cell; if the working mode of the first cell is a target mode, setting the reselection priority of the first cell as the lowest priority corresponding to the target mode in reselection configuration information stored in the second cell; and if detecting that the mobile terminal in the coverage area of the second cell releases the wireless resources, sending a wireless resource release message carrying the reselection configuration information to the mobile terminal, wherein the reselection configuration information is used for performing cell reselection on the mobile terminal. According to the embodiment of the application, the mobile terminal can be balanced from the first cell, and meanwhile, the probability that the mobile terminal is reselected to the first cell is reduced by reducing the reselection priority of the first cell, so that the balancing effect is improved.
The above description is only an overview of the technical solutions of the present application, and the present application may be implemented in accordance with the content of the description so as to make the technical means of the present application more clearly understood, and the detailed description of the present application will be given below in order to make the above and other objects, features, and advantages of the present application more clearly understood.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is a flowchart illustrating a first step of a reselection control method for a mobile terminal according to a first embodiment of the present application;
fig. 2 shows a schematic diagram of interaction between cells in an embodiment according to the application;
fig. 3 shows a block diagram of a second base station according to the second embodiment of the present application.
Detailed Description
Exemplary embodiments of the present application will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
Example one
Referring to fig. 1, a flowchart illustrating steps of a first reselection control method for a mobile terminal according to the embodiment of the present application is shown, where the method is applied to a base station of a second cell, and specifically includes the following steps:
The embodiment of the present application may be applied to a controller of each cell in a base station, and it can be understood that the base station operates in units of cells, the controller of each cell is used for performing service processing on the cell, and the controller of each cell may be regarded as a module on the base station.
In an embodiment of the present application, the first CELL is a balanced source CELL, for example, CELL1 in fig. 2, and the second CELL is an adjacent CELL that can be interacted with the first CELL, and for a same first CELL, there may be a plurality of second CELLs, for example, CELL2 and CELL3 in fig. 2, so that the first CELL first compares its own resource state parameter with a preset second resource state threshold to determine whether the first CELL is in a high load state, and specifically, if its own resource state parameter is greater than or equal to the second resource state threshold, it is determined that the first CELL is in the high load state; otherwise, determining that the first cell is in a low load state; then, if the mobile terminal is in the high load state, a RESOURCE state REQUEST is sent to the second CELL, for example, as shown in fig. 2, the first CELL1 sends a RESOURCE state REQUEST message to the second CELLs CELL2 and CELL3, and the second CELLs CELL2 and CELL3 reply the RESOURCE state RESPONSE message to the first CELL1, and add the RESOURCE state parameters of the second CELL to the RESOURCE state UPDATE message to return to the first CELL1, so that the first CELL1 may select one or more CELLs with the minimum RESOURCE state parameters from the second CELLs CELL2 and CELL3 as target balancing CELLs to transfer part of the mobile terminals of the first CELL1 to the target balancing CELLs.
Specifically, when the RESOURCE STATUS REQUEST is sent for the first time, the RESOURCE STATUS REQUEST message may also carry a Registration REQUEST IE parameter whose value is "start", and if a new second cell occurs during the balancing process, the RESOURCE STATUS REQUEST for the second time may be sent, but the RESOURCE STATUS REQUEST message may carry a Registration REQUEST IE parameter whose value is "add". Of course, the resource STATUS information of the second cell is updated due to the continuous change of the mobile terminal, so that the second cell adds the updated resource STATUS information to the response STATUS UPDATE message and transmits the updated resource STATUS information to the first cell.
The inter-active neighbor cell may be determined according to a history handover record, and specifically, the neighbor cell having a handover relationship with the first cell is selected from the history handover record, and the number of handovers in unit time between each neighbor cell and the first cell is counted; then, the adjacent cell with larger switching times is selected as the interactive adjacent cell.
The resource status parameter is used to indicate the load status of the cell, for example, the resource usage status parameter may be indicated by the number of mobile terminals currently accessing the cell, and the larger the number of mobile terminals is, the cell is in a high load status; the smaller the number of the mobile terminals is, the lower the load of the cell is; or, the number of service requests received in unit time of the cell can be used for representing, and the larger the number of service requests is, the cell is in a high load state; the smaller the number of service requests, the lower the load of the cell. It is understood that the embodiments of the present application do not limit how the resource status parameter is specifically expressed.
The target system may be a network system with a large data volume, for example, an LTE (Long-Term Evolution) system.
In practical application, each cell stores reselection configuration information, and the reselection configuration information at least includes reselection priorities of interactive neighboring cells of a current cell. Specifically, the frequency point of the interactive neighboring cell may be used as a keyword, and the identifier of the interactive neighboring cell may also be used as a keyword. For example, for three cells in fig. 2, the reselection configuration information may be: { { CELL1, PRI1}, { CELL2, PRI2}, { CELL3, PRI3} }, it may also be: { { FREQ1, PRI1}, { FREQ2, PRI2}, { FREQ3, PRI3} }, wherein FREQ1 and PRI1 are respectively a frequency point and a reselection priority corresponding to a CELL identifier CELL1, FREQ2 and PRI2 are respectively a frequency point and a reselection priority corresponding to a CELL identifier CELL2, and FREQ3 and PRI3 are respectively a frequency point and a reselection priority corresponding to a CELL identifier CELL 3.
In practical application, the reselection priority has a certain value range, for example, 0 to 7, where 0 to 2 are priorities of non-LTE systems, 3 to 7 are priorities of LTE systems, 7 is the highest priority, and 0 is the lowest priority, so that the reselection priority of the first cell can be set to 3.
Referring to fig. 2, if the operating mode of the first CELL1 is the target mode, the second CELL2 sets the reselection priority of CELL1 in the reselection configuration information stored in CELL2 to the lowest priority, and the second CELL3 sets the reselection priority of CELL1 in the reselection configuration information stored in CELL3 to the lowest priority.
The embodiment of the application may first determine a historical load state of the second cell, and directly set the reselection priority of the first cell to the lowest priority if the second cell is in a low load state all the time or most of the time in the historical time. It will be appreciated that directly setting the reselection priority of the first cell to the lowest priority accommodates application scenarios in which the second cell is often in a low load state.
Optionally, in another embodiment of the present application, step 102 includes sub-step a 1:
in sub-step a1, if the operating format of the first cell is the target format and the first resource status parameter is smaller than a preset first resource status threshold, the reselection priority of the first cell is set to the lowest priority corresponding to the target format in the reselection configuration information stored in the second cell.
The first resource state threshold may be set according to an actual application scenario, and is not limited in the embodiments of the present application.
According to the embodiment of the application, the historical load state of the second cell can be determined firstly, and if the time difference between the low load state and the high load state of the second cell in the historical time is not large, the reselection priority of the first cell can be set to be the lowest priority dynamically according to the first resource state parameter. It can be understood that the reselection priority of the first cell is dynamically set to be the lowest priority according to the first resource state parameter, which is suitable for an application scenario in which the load state of the second cell is unstable.
Optionally, in another embodiment of the present application, step 102 further includes step B1:
step B1, receiving the resource status parameter sent by the first cell to obtain a second resource status parameter;
specifically, the first cell may send the resource status parameter to the second cell through a private message.
The step 102 includes a sub-step a 2:
in substep a2, if the operating format of the first cell is the target format, and a difference obtained by subtracting the first resource state parameter from the second resource state parameter is greater than a preset second resource state threshold, setting the reselection priority of the first cell to the lowest priority corresponding to the target format in the reselection configuration information stored in the second cell.
It should be noted that, since the resource state parameter of the first cell needs to be obtained through the private information, this solution is only applicable to an application scenario in which the first cell and the second cell belong to the same base station, or belong to different base stations, but the two base stations belong to the same manufacturer.
According to the embodiment of the application, when the resource state parameter of the first cell is larger than the resource state parameter of the second cell to a certain extent, namely the load capacity of the first cell is larger than the load capacity of the second cell, the probability that the mobile terminal of the second cell reselects the first cell is reduced, and the balancing effect is further improved.
Optionally, in another embodiment of the present application, in the reselection configuration information stored in the second cell, setting the reselection priority of the first cell to be the lowest priority corresponding to the target system includes sub-steps A3 to a 4:
substep a3, determining a cell with the working standard as the target standard, and obtaining a target cell list, where the target cell list includes the first cell and the second cell.
In practical application, the adjacent cell relation table may have a working standard, so that a cell with the working standard as a target standard can be obtained from the adjacent cell relation table stored in the second cell; in addition, if the reselection configuration information includes the working system of the cell, the cell of the target system may also be selected from the reselection configuration information stored in the second cell.
Substep a4, for each target cell other than the first cell in the target cell list, if the reselection priority of the target cell is not the highest priority corresponding to the target format, modifying the reselection priority of the first cell in the reselection configuration information stored in the second cell to the lowest priority corresponding to the target format, and increasing the reselection priority of the target cell.
Specifically, the reselection priority of the target cell is adjusted to be higher, which may be by one level. For example, if the reselection priority of the target cell is 6, it may be modified to 7.
Furthermore, if the reselection priority of the target cell is the highest priority 7, it is not modified.
It should be noted that, in the embodiments of the present application, the reselection priorities of the first cell and the target cell in the non-target system are not modified, where the non-target system includes but is not limited to: UTRA-FDD (Universal Radio Access-Frequency Division duplex), UTRA-TDD (Universal Radio Access-Time Division duplex), GERAN (GSM Radio Access Network, GSM (Global System for Mobile Communications)/EDGE (Enhanced Data Rate for GSM Evolution) Radio Access Network).
Specifically, the second cell may write reselection configuration information into idle mobility control information in the radio resource release information, that is: in the IdleModeMobilityControlInfo cell, when the mobile terminal receives the radio resource release message, the mobile terminal may reselect the cell according to the reselection configuration information in the IdleModeMobilityControlInfo cell, and at this time, because the reselection priority of the first cell is the lowest, the probability that the mobile terminal reselects the first cell is very small, and the probability that the mobile terminal continuously selects the second cell is relatively large, which is helpful to prevent a large number of idle mobile terminals from reselecting the first cell, and improves the equalization effect.
It should be noted that, in practical applications, when the reselection configuration information is written into the IdleModeMobilityControlInfo cell, the reselection configuration information may be divided into a plurality of lists according to the systems, for example, a cell of a target system is taken as one list, and the UTRA-FDD system, the UTRA-TDD system, and the GERAN/EDGE system correspond to one list respectively.
With reference to fig. 2, for a second CELL2, if it is detected that one of the mobile terminals in the coverage area of CELL2 releases radio resources, sending a radio resource release message carrying reselection configuration information to the mobile terminal, where the reselection configuration information is used to perform CELL reselection on the mobile terminal; for the second CELL3, if it is detected that one of the mobile terminals in the CELL3 coverage releases radio resources, a radio resource release message carrying reselection configuration information is sent to the mobile terminal, and the reselection configuration information is used for performing CELL reselection on the mobile terminal.
In another embodiment of the present application, after step 103, the method further comprises step C1:
step C1, after a preset time or after receiving the end message sent by the first cell, restoring the reselection configuration information stored in the second cell to the default reselection configuration information.
Specifically, a timer, for example, a T320 timer, may be set, where the timeout time of the timer is an action time of the reselection priority, and after the timer expires, the reselection configuration information stored in the second cell is recovered as the default reselection configuration information. The timeout time of the timer may be determined according to the duration of the high load condition of the first cell in the historical time, for example, if the duration of the high load condition in the historical time of the first cell is 5 minutes at most, the timeout time may be set to 5 minutes.
In addition, after the equalization is finished, the Registration Request IE may be set to "stop", and added to the RESOURCE STATUS Request message, and sent to the second cell, and when the second cell receives that the Registration Request IE is "stop", the reselection configuration information stored in the second cell is recovered as the default reselection configuration information. As shown in fig. 2, after the equalization of the first CELL1 is finished, a RESOURCE STATUS REQUEST message is sent to the second CELLs CELL2 and CELL3, so that the second CELLs CELL2 and CELL3 restore the stored reselection configuration information to the default reselection configuration information.
It can be understood that, after the reselection configuration information stored in the second cell is restored to the default reselection configuration information, if it is detected that one of the mobile terminals in the coverage area of the second cell releases the radio resource, the default reselection configuration information may be sent to the mobile terminal through the radio resource release message, so that the mobile terminal performs cell reselection according to the normal reselection configuration information.
According to the embodiment of the application, the probability that the mobile terminal of the second cell reselects the first cell can be reduced when the first cell is in a high-load state, and the normal cell reselection can be recovered when the first cell recovers to be normal or is considered to recover to be normal.
In the embodiment of the application, if a resource state request sent by a first cell is received, sending a resource state parameter of a second cell to the first cell as a first resource state parameter, where the first resource state parameter is used to determine whether to balance a mobile terminal in the first cell to the second cell; if the working mode of the first cell is a target mode, setting the reselection priority of the first cell as the lowest priority corresponding to the target mode in reselection configuration information stored in the second cell; and if detecting that the mobile terminal in the coverage area of the second cell releases the wireless resources, sending a wireless resource release message carrying the reselection configuration information to the mobile terminal, wherein the reselection configuration information is used for performing cell reselection on the mobile terminal. According to the embodiment of the application, the mobile terminal can be balanced from the first cell, and meanwhile, the probability that the mobile terminal is reselected to the first cell is reduced by reducing the reselection priority of the first cell, so that the balancing effect is improved.
In addition, the reselection priorities can be flexibly modified by combining with the load states of the first cell and/or the second cell, so that the balancing effect can be better improved aiming at various scenes; the probability that the mobile terminal of the second cell reselects the first cell can be reduced when the first cell is in a high-load state, and the normal cell reselection is recovered when the first cell recovers to be normal or is considered to recover to be normal.
Example two
Referring to fig. 3, a block diagram of a second embodiment of a base station according to the present application is shown, where the base station is a base station of a second cell, and specifically includes the following modules:
a terminal balancing module 201, configured to send a resource state parameter of a second cell to a first cell as a first resource state parameter if a resource state request sent by the first cell is received, where the first resource state parameter is used to determine whether to balance a mobile terminal in the first cell to the second cell.
A reselection priority setting module 202, configured to set, if the working format of the first cell is a target format, the reselection priority of the first cell as a lowest priority corresponding to the target format in the reselection configuration information stored in the second cell.
A cell reselection control module 203, configured to send a radio resource release message carrying reselection configuration information to the mobile terminal if it is detected that the mobile terminal in the coverage area of the second cell releases radio resources, where the reselection configuration information is used to perform cell reselection on the mobile terminal.
Optionally, in another embodiment of the application, the reselection priority setting module 202 includes:
A first reselection priority setting sub-module, configured to set, in reselection configuration information stored in the second cell, a reselection priority of the first cell to a lowest priority corresponding to the target system if the first resource state parameter is smaller than a preset first resource state threshold.
Optionally, in another embodiment of the present application, the base station further includes:
a second resource state parameter receiving module, configured to receive the resource state parameter sent by the first cell to obtain a second resource state parameter;
the reselection priority setting module comprises:
and the second reselection priority setting submodule is used for setting the reselection priority of the first cell as the lowest priority corresponding to the target system in the reselection configuration information stored in the second cell if the difference obtained by subtracting the first resource state parameter from the second resource state parameter is larger than a preset second resource state threshold.
Optionally, in another embodiment of the application, the reselection priority setting module or the first reselection priority setting submodule includes:
A target cell list generating unit, configured to determine a cell with a target system as a working system, and obtain a target cell list, where the target cell list includes the first cell and the second cell;
a reselection priority setting unit, configured to, for each target cell other than the first cell in the target cell list, if the reselection priority of the target cell is not the highest priority corresponding to the target system, modify, in reselection configuration information stored in the second cell, the reselection priority of the first cell to the lowest priority corresponding to the target system, and increase the reselection priority of the target cell.
Optionally, in another embodiment of the application, the base station further includes:
and a reselection configuration information recovery module, configured to recover, after a preset time or after receiving an end message sent by the first cell, the reselection configuration information stored in the second cell to be default reselection configuration information.
In the embodiment of the application, if a resource state request sent by a first cell is received, sending a resource state parameter of a second cell to the first cell as a first resource state parameter, where the first resource state parameter is used to determine whether to balance a mobile terminal in the first cell to the second cell; if the working mode of the first cell is a target mode, setting the reselection priority of the first cell as the lowest priority corresponding to the target mode in reselection configuration information stored in the second cell; and if detecting that the mobile terminal in the coverage area of the second cell releases the wireless resources, sending a wireless resource release message carrying the reselection configuration information to the mobile terminal, wherein the reselection configuration information is used for performing cell reselection on the mobile terminal. According to the embodiment of the application, the mobile terminal can be balanced from the first cell, and meanwhile, the probability that the mobile terminal is reselected to the first cell is reduced by reducing the reselection priority of the first cell, so that the balancing effect is improved.
In addition, the reselection priorities can be flexibly modified by combining with the load states of the first cell and/or the second cell, so that the balancing effect can be better improved aiming at various scenes; the probability that the mobile terminal of the second cell reselects the first cell can be reduced when the first cell is in a high-load state, and the normal cell reselection is recovered when the first cell recovers to be normal or is considered to recover to be normal.
For the base station embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and for relevant points, refer to the partial description of the method embodiment.
The algorithms and displays presented herein are not inherently related to any particular computer, virtual machine, or other apparatus. Various general purpose systems may also be used with this teaching. The required structure for constructing such a system will be apparent from the description above. In addition, this application is not directed to any particular programming language. It will be appreciated that a variety of programming languages may be used to implement the teachings of the present application as described herein, and any descriptions of specific languages are provided above to disclose the best modes of the present application.
In the description provided herein, numerous specific details are set forth. However, it is understood that embodiments of the application may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the application, various features of the application are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the application and aiding in the understanding of one or more of the various inventive aspects. However, the disclosed method should not be interpreted as reflecting an intention that: this application is intended to cover such departures from the present disclosure as come within known or customary practice in the art to which this invention pertains. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this application.
Those skilled in the art will appreciate that the modules in the device in an embodiment may be adaptively changed and disposed in one or more devices different from the embodiment. The modules or units or components of the embodiments may be combined into one module or unit or component, and furthermore they may be divided into a plurality of sub-modules or sub-units or sub-components. All of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the processes or elements of any method or apparatus so disclosed, may be combined in any combination, except combinations where at least some of such features and/or processes or elements are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.
Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the application and form different embodiments. For example, in the following claims, any of the claimed embodiments may be used in any combination.
The various component embodiments of the present application may be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof. Those skilled in the art will appreciate that a microprocessor or Digital Signal Processor (DSP) may be used in practice to implement some or all of the functions of some or all of the components in a reselection control device for a mobile terminal according to embodiments of the present application. The present application may also be embodied as apparatus or base station programs (e.g., computer programs and computer program products) for performing a portion or all of the methods described herein. Such programs implementing the present application may be stored on a computer readable medium or may be in the form of one or more signals. Such a signal may be downloaded from an internet website or provided on a carrier signal or in any other form.
It should be noted that the above-mentioned embodiments illustrate rather than limit the application, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The application may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claim enumerating several base stations, several of these base stations may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names.
Claims (10)
1. A reselection control method of a mobile terminal, applied to a base station of a second cell, includes:
if a resource state request sent by a first cell is received, sending a resource state parameter of a second cell to the first cell as a first resource state parameter, wherein the first resource state parameter is used for determining whether a mobile terminal in the first cell is balanced to the second cell, and the resource state parameter is used for representing the load state of the cell;
If the working mode of the first cell is a target mode, setting the reselection priority of the first cell as the lowest priority corresponding to the target mode in the reselection configuration information stored in the second cell;
and if the mobile terminal in the coverage area of the second cell releases the radio resources, sending a radio resource release message carrying the reselection configuration information to the mobile terminal, wherein the reselection configuration information is used for carrying out cell reselection on the mobile terminal.
2. The method according to claim 1, wherein setting the reselection priority of the first cell to the lowest priority corresponding to the target system in the reselection configuration information stored in the second cell comprises:
if the first resource state parameter is smaller than a preset first resource state threshold, in reselection configuration information stored in the second cell, setting the reselection priority of the first cell as the lowest priority corresponding to the target system.
3. The method according to claim 1, wherein before setting the reselection priority of the first cell to the lowest priority corresponding to the target system in the reselection configuration information stored in the second cell, the method further comprises:
Receiving the resource state parameter sent by the first cell to obtain a second resource state parameter;
in the reselection configuration information stored in the second cell, setting the reselection priority of the first cell as the lowest priority corresponding to the target system includes:
and if the difference obtained by subtracting the first resource state parameter from the second resource state parameter is larger than a preset second resource state threshold, setting the reselection priority of the first cell as the lowest priority corresponding to the target system in the reselection configuration information stored in the second cell.
4. The method according to any one of claims 1 to 3, wherein setting the reselection priority of the first cell to the lowest priority corresponding to the target system in the reselection configuration information stored in the second cell comprises:
determining a cell with a working standard as the target standard to obtain a target cell list, wherein the target cell list comprises the first cell and the second cell;
for each target cell except the first cell in the target cell list, if the reselection priority of the target cell is not the highest priority corresponding to the target system, modifying the reselection priority of the first cell into the lowest priority corresponding to the target system in reselection configuration information stored in the second cell, and increasing the reselection priority of the target cell.
5. The method according to claim 4, wherein after setting the reselection priority of the first cell to the lowest priority corresponding to the target system in the reselection configuration information stored in the second cell, the method further comprises:
and after a preset time or after receiving an end message sent by the first cell, restoring the reselection configuration information stored in the second cell to default reselection configuration information.
6. A cell base station, comprising:
a terminal balancing module, configured to send a resource state parameter of a second cell to a first cell as a first resource state parameter if a resource state request sent by the first cell is received, where the first resource state parameter is used to determine whether to balance a mobile terminal in the first cell to the second cell, and the resource state parameter is used to indicate a load state of the cell;
a reselection priority setting module, configured to set, if the working format of the first cell is a target format, a reselection priority of the first cell as a lowest priority corresponding to the target format in reselection configuration information stored in the second cell;
And the cell reselection control module is configured to send a radio resource release message carrying reselection configuration information to the mobile terminal if it is detected that the mobile terminal in the coverage area of the second cell releases radio resources, where the reselection configuration information is used to perform cell reselection on the mobile terminal.
7. The base station of claim 6, wherein the reselection prioritization module comprises:
a first reselection priority setting sub-module, configured to set, in reselection configuration information stored in the second cell, a reselection priority of the first cell to a lowest priority corresponding to the target system if the first resource state parameter is smaller than a preset first resource state threshold.
8. The base station of claim 6, wherein the base station further comprises:
a second resource state parameter receiving module, configured to receive the resource state parameter sent by the first cell to obtain a second resource state parameter;
the reselection priority setting module comprises:
and the second reselection priority setting submodule is used for setting the reselection priority of the first cell as the lowest priority corresponding to the target system in the reselection configuration information stored in the second cell if the difference obtained by subtracting the first resource state parameter from the second resource state parameter is larger than a preset second resource state threshold.
9. The base station of any one of claims 6 to 8, wherein the reselection priority setting module or the first reselection priority setting sub-module comprises:
a target cell list generating unit, configured to determine a cell with a target system as a working system, and obtain a target cell list, where the target cell list includes the first cell and the second cell;
a reselection priority setting unit, configured to, for each target cell other than the first cell in the target cell list, if the reselection priority of the target cell is not the highest priority corresponding to the target system, modify, in reselection configuration information stored in the second cell, the reselection priority of the first cell to the lowest priority corresponding to the target system, and increase the reselection priority of the target cell.
10. The base station of claim 9, wherein the base station further comprises:
and a reselection configuration information recovery module, configured to recover, after a preset time or after receiving an end message sent by the first cell, the reselection configuration information stored in the second cell to be default reselection configuration information.
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| US9736765B2 (en) * | 2014-04-28 | 2017-08-15 | Intel IP Corporation | Load balancing in a wireless cellular network based on user equipment mobility |
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