CN102036341A

CN102036341A - Method and device for implementing cell blockage

Info

Publication number: CN102036341A
Application number: CN2010105964096A
Authority: CN
Inventors: 杨莎; 马赛; 刘强; 王玉龙
Original assignee: Beijing Northern Fiberhome Technologies Co Ltd
Current assignee: CICT Mobile Communication Technology Co Ltd
Priority date: 2010-12-20
Filing date: 2010-12-20
Publication date: 2011-04-27
Anticipated expiration: 2030-12-20
Also published as: CN102036341B

Abstract

The embodiment of the invention discloses a method and a device for implementing cell blockage. The method comprises the following steps that: when network congestion occurs in a cell of a base station, a base station side acquires a priority level of the network congestion of the cell; and the base station side transmits congestion control information at a corresponding level to the cell and controls the cell blockage according to the priority level. In the invention, the priority level of the network congestion is divided according to network congestion under different actual conditions, different cell blockage processing modes are selected to flexibly process the blockage according to the priority level, and the influence brought to communication of a user terminal in the cell can be reduced in the cell blockage process.

Description

Method and device for realizing cell blocking

Technical Field

The present invention relates to the field of network communication technologies, and in particular, to a method and an apparatus for implementing cell blocking.

Background

When a user terminal performs a communication service with a network device through a communication network, when a network device failure occurs, a parameter configuration is not reasonable, or an abnormal condition occurs in the maintenance of the network device, or when a narrowband signal causes a blocking to a broadband signal when resources are insufficient, the network between the user terminal and the network device is blocked.

With network congestion, the following will occur: the incoming call and the outgoing call of the user terminal are difficult, and can be connected by dialing for many times; or although there is signal, but can't get up and call, call set up success rate is reduced, namely the radio system call completing rate is reduced; or the user is suddenly disconnected when talking, and the call drop rate of the wireless system is improved; or when the user is handed over to the neighboring cell, handover failure occurs, etc. It can be seen that network congestion causes great inconvenience to the normal communication of the user terminal.

In the wireless communication system, the base station is a node for communication between the network side and the user side, and a physical area covered by a wireless signal of the base station can be divided into a plurality of cells according to network planning, that is, the cell can be regarded as a basic unit for the base station to carry service. In order to overcome the influence of network congestion on normal communication of a user terminal, in the prior art, a corresponding cell blocking operation is performed on a cell for the above congestion condition, so as to solve the problems existing in the network.

The existing processing operations are: when network blockage occurs, a network manager at the base station side issues a cell blocking command, other users are forbidden to access a corresponding cell, then whether the cell is idle or not, the context of User Equipment (UE) is directly deleted, a radio frequency channel is closed, and the service of the whole cell is directly stopped. After the equipment fault is eliminated, the communication network condition is improved, the resources are sufficient, or the network upgrading is completed, the network blockage is relieved, the cells are controlled to be accessed into the users again, and the normal communication is recovered.

However, through the research of the inventor, the following defects still exist in the method for processing network blocking in the prior art:

the cell block command sent from the network manager is to stop the communication of users in the cell, the cell block can prohibit the access of new users at first, and when the users are preparing to access, the block cell can cause the access rate to be reduced; the cell block then deletes the UE context, at this time, when the user is in a call, the user can find that the call object can not be found due to the execution of the cell block, and the call is interrupted; in addition, the radio frequency channel is closed after the cell block deletes the UE context, and at the moment, when a user prepares to switch the cell, the cell block causes the switching failure; both of the above situations will result in a severe degradation of the communication quality in the cell where network congestion occurs.

Disclosure of Invention

In view of this, embodiments of the present invention provide a method and an apparatus for implementing cell blocking, so as to reduce the influence on the communication of the user terminal in the cell during the cell blocking process.

The embodiment of the invention provides a method for realizing cell blocking, which comprises the following steps:

when a base station cell has network blockage, a base station side acquires the priority level of the network blockage of the cell;

and according to the priority level, the base station side sends blocking control information of a corresponding level to the cell to control the blocking of the cell.

Preferably, when the priority level of the cell network congestion is a medium priority, the base station sends the blocking control information of the corresponding level to the cell, and controlling the cell blocking specifically includes:

and the base station side reduces the transmitting power within a preset blocking time period range, switches the user terminal in the cell to an adjacent cell and then terminates the service of the cell.

Preferably, when the priority level of the network congestion of the cell is a low priority level, the base station sends the blocking control information of the corresponding level to the cell, and controlling the blocking of the cell specifically includes:

and the base station side switches the user terminal in the cell to an adjacent cell until the cell is idle and terminates the service of the cell.

Preferably, when the priority level of the network congestion of the cell is a high priority level, the base station sends the blocking control information of the corresponding level to the cell, and controlling the blocking of the cell specifically includes:

and the base station side immediately blocks the cell and terminates the service of the cell.

Further, the method further comprises:

and after a preset blocking time period, if the user terminal still exists in the cell, forcibly switching the user terminal in the cell to an adjacent cell, and then terminating the service of the cell.

An apparatus to implement cell blocking, the apparatus comprising:

a priority level obtaining module, configured to obtain a priority level of network congestion of a cell when the cell of a base station is congested;

and the cell blocking module is used for sending blocking control information of corresponding levels to the cell according to the priority level and controlling the cell blocking.

Preferably, when the priority level of the cell network congestion is a medium priority,

the cell block module is used for reducing the transmitting power to switch the user terminal in the cell to the adjacent cell within the range of the preset block time period, and then terminating the service of the cell.

Preferably, when the priority level of the cell network congestion is a low priority level,

and the cell blocking module is used for switching the user terminal in the cell to an adjacent cell until the cell is idle and terminating the service of the cell.

Preferably, when the priority level of the cell network congestion is a high priority level, the cell blocking module is configured to immediately perform blocking on the cell and terminate the service of the cell.

Preferably, after a preset blocking time period elapses, there are still user terminals in the cell, and the cell blocking module is further configured to forcibly switch the user terminals in the cell to an adjacent cell, and then terminate the service of the cell.

Compared with the prior art, the technical scheme provided by the embodiment of the invention considers the network blockage under different practical conditions, divides the priority level of the network blockage, selects different cell blockage processing modes according to the priority level, realizes flexible treatment on the blockage, and reduces the influence on the communication of the user terminal in the cell in the process of blocking the cell, and comprises the following steps: the problems of switching failure caused by network blockage when a user terminal switches cells, or immunization calling quality reduction, disconnection and the like caused by network blockage are reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a flowchart of steps of a method for implementing cell blocking according to an embodiment of the present invention;

fig. 2 is a schematic general flow chart of three cell occlusions according to an embodiment of the present invention;

fig. 3 is a schematic flowchart of a step of implementing cell blocking under a medium-priority cell network blocking condition according to an embodiment of the present invention;

fig. 4 is a schematic flowchart of a step of implementing cell blocking in a low-priority cell network congestion situation according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of an apparatus for implementing cell blocking according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

When the network of the cell is blocked, the base station needs to be controlled to stop sending the service of the cell, and the cell is blocked. In order to reduce the influence on the communication of the user terminal in the cell in the process of blocking the cell, an embodiment of the present invention provides a method for implementing cell blocking, where as shown in fig. 1, the method may specifically include the following steps:

step 101, when a network blockage occurs in a base station cell, a base station side acquires a priority level of the network blockage of the cell;

in the embodiment of the invention, when the base station side finds that the network of the base station cell is blocked, the cell blocking command is not directly issued, other users are forbidden to access the corresponding cell, then the context of User Equipment (UE) is directly deleted no matter whether the cell is idle, a radio frequency channel is closed, and the service of the whole cell is directly stopped. In the implementation step, the base station side firstly acquires the priority level of the current network blockage of the cell;

and step 102, according to the priority level, the base station side sends blocking control information of a corresponding level to the cell to control the blocking of the cell.

And after the priority level of the current network blockage of the cell is obtained, the base station side realizes the blockage of the cell according to the cell blockage processing modes under different priority levels.

The embodiment of the invention considers the network blockage generated under different practical conditions, divides the priority level of the network blockage, selects different cell blockage processing modes according to the priority level, realizes flexible treatment on the blockage, and reduces the influence on the communication of user terminals in the cell in the process of blocking the cell, and comprises the following steps: the problems of switching failure caused by network blockage when a user terminal switches cells, or immunization calling quality reduction, disconnection and the like caused by network blockage are reduced.

In order to facilitate a further understanding of the invention, the invention is described in detail below with reference to specific embodiments thereof.

In the embodiment of the invention, the network congestion is divided into three priorities of high, medium and low according to the actual congestion condition of the network. The cell block control information can be issued by a network management in the base station.

Generally, there are several situations that cause network congestion in a cell:

1. operation failure of the base station:

at this time, emergency blocking of the cell is required, and base station faults are checked and eliminated, so that network congestion caused by base station operation faults needs to be given a high-priority processing level;

2. insufficient network resources:

at this time, the signal in the network is not good, the communication quality is poor, but the communication is still possible, therefore, the cell switching can be allowed to be performed to the users in the cell in a period of time, then the cell blocking processing is performed, and the cell network blocking caused by the reasons can give a medium priority processing level;

3. equipment maintenance situations, such as product upgrades:

since normal device maintenance can be performed when there are few communicating users at night, the time for providing maintenance is relatively long, and a low priority level of handling can be given to network congestion of a cell due to device maintenance.

The embodiment of the invention can provide the cell block processing with different priority modes according to the priority level of the cell network block. The high-priority blocking is also called fast blocking, and when the high-priority blocking occurs, the cell blocking needs to be quickly realized for the cell, which may have a larger influence on the communication quality of users in the cell and a larger damage to the network, similar to the cell blocking operation in the prior art.

For the blocking situation of the cell network with medium priority, the base station side can complete cell blocking within a preset blocking time range, and reduce the threshold value of the user terminal for cell switching, so that the user terminal meeting the switching judgment criterion in the fault cell is switched to the adjacent cell within the medium priority blocking time range. For the users who do not meet the switching criterion, the transmitting power of the base station is reduced, so that the user terminals meet the cell switching criterion and are sequentially switched to the adjacent cells, thereby reducing the phenomena of call drop caused by cell blocking or switching failure and the like when the users carry out call, and ensuring normal communication and switching of the users in the cell blocking process.

For the cell blocking situation of the low-priority cell network, the cell blocking can be defined as the minimum damage blocking, and the specific implementation scheme is as follows: the method comprises the steps that users in a fault cell are switched to an adjacent cell according to normal switching conditions, the cell blocking is not completed until the cell is idle, and the service of the cell is terminated.

Fig. 2 is a general flow chart of the above three cell occlusions. Wherein,

step 201, a network manager at a base station side finds that network blockage occurs in a cell;

step 202, the network manager at the base station side prohibits other new users from accessing the current fault cell;

step 203, the network manager at the base station side judges the priority level of network congestion in the current cell;

step 204, when the network congestion of the current cell is high priority, the network manager at the base station side immediately deletes the UE context; thereafter, step 207 is continued;

step 205, when the network congestion of the current cell is a medium priority, the network manager on the base station side executes medium priority related processing; thereafter, step 207 is continued;

step 206, the network congestion of the current cell is low priority, and the network manager at the base station side executes the low priority related processing; thereafter, step 207 is continued;

and step 207, the network manager at the base station side closes the radio frequency channel to complete cell blocking.

The cell blocking schemes in the medium and low cell network blocking situations are respectively described in detail through specific embodiments.

Fig. 3 shows a flow of steps for implementing cell blocking under the condition of network congestion of a medium priority cell:

step 301, receiving control information of preset blocking time, and starting a timer 1 and a timer 2, wherein the timer 1 is preset with a short time A, and the timer 2 is preset with a blocking time B;

a shorter timer 1 and a timer 2 that performs a length of congestion waiting time;

step 302, triggering measurement configuration of parameters in different periods according to the moving speed of the UE, where the UE sends a measurement report according to time parameters in different periods in the measurement configuration, where the measurement report includes RSRP (Reference Signal Receiving Power) signals for measuring neighboring cells and source cells, and the specific implementation manner is: setting a moving speed threshold, if the moving speed of the UE is greater than the threshold, triggering a measurement report with a short period; if the UE moving speed is less than the threshold, triggering a measurement report with a long period;

therefore, when the UE moves faster, the measurement report period is shorter, so that the relevant information of the user or the switching of the user can be reported more accurately; when the UE moves at a slow speed, since the information content of the measurement report may be the same in a certain period of time, the reporting of the measurement report in a short time wastes resources, and therefore, for the UE moving at a slow speed, a measurement report with a long period is used.

Step 303, the base station compares the RSRP signal of the neighboring cell with the RSRP signal of the source cell according to the message carried by the measurement report, and determines whether to switch the UE to the neighboring cell;

for medium priority network congestion, the user terminals in the cell need to be handed over according to the following criteria:

if the RSRP signal of the neighboring cell obtained in the measurement report is greater than or equal to the RSRP signal received by the source cell, the US is switched to the neighboring cell, in step 304;

if the RSRP signal of the adjacent cell is smaller than the RSRP signal of the source cell, the switching processing is not carried out; then, continuing to judge the remaining time of the medium priority for executing the blocking, in step 305, setting a threshold C, if the remaining time for executing the cell blocking is greater than the threshold C, reducing the transmission power of the base station uniformly and slowly, in step 306, and then executing steps 302 and 303 circularly; when the remaining time for executing cell blocking is less than the threshold C, rapidly reducing the transmission power of the base station (step 307), and then circularly executing steps 302 and 303;

it should be noted here that the threshold C and the preset blocking time B of the timer 2 have different values, and the threshold B is a long timer time blocked for a period of time, and its value is greater than the threshold C. Different strategies are used to reduce the transmit power of the base station based on the remaining time to perform cell blocking compared to the threshold C.

Step 308, when the started timer 1 is over time, checking whether the cell is idle, if so, executing step 311, closing the radio frequency channel, and completing cell blocking; if not, executing steps 302 and 303 circularly;

step 309, when the started timer 2 is overtime, checking whether the cell is idle, and if the cell is idle, executing the step twelve; if not, the remaining users in the cell are forced to be switched, in step 310, and then step 311 is executed.

In the embodiment of the invention, when a medium priority network is blocked, a user is switched in a cell blocking time period to ensure the call quality and the effect, the judgment condition of the switching is changed, the switching criterion of the normal condition is that the signal of an adjacent cell in a measurement report message detected by the user is higher than the signal of a source cell by a certain threshold value, and the switching is allowed when the threshold value is larger than 0 (for example, 6 dB). When considering the cell block, on one hand, the network quality condition is poor, and on the other hand, the user in the cell needs to be transferred in time, at this time, the decision threshold value is set to 0, that is, when the measured signal of the neighboring cell is greater than or equal to the signal of the source cell, the handover can be executed. After the switching is completed according to the new priority criterion for switching the medium priority, if part of users still exist in the cell, the remaining users are switched according to the new switching criterion by adopting a mode of reducing the transmitting power of the base station. When the time for executing medium priority blocking is overtime, if no user exists in the cell, the blocking command is completed; if the user still exists in the cell, the cell is switched to the adjacent cell forcibly; this makes it possible to prevent loss of information of the communicating or switching user when the blocking is performed. The method has the advantages that the reduction degree of the communication quality is slightly influenced by the cell block, and the influence of the cell block on the user can be quickly and flexibly processed.

Fig. 4 shows a flow of steps for implementing cell blocking under the condition of network congestion of a low-priority cell:

step 401, starting two timers: a timer 3 for presetting a short time and a timer 4 for presetting the longest time for executing the block of the low-priority cell;

step 402, triggering measurement reports with different cycle lengths according to the moving speed of the UE;

step 403, the base station compares the RSRP signal of the neighboring cell with the RSRP signal of the source cell according to the message carried by the measurement report, and determines whether to switch the UE to the neighboring cell;

the specific implementation mode is as follows: setting a threshold, if the RSRP signal of the neighboring cell is stronger than the RSRP signal of the source cell and the difference exceeds the threshold, performing handover, in step 404; otherwise, the steps 402-403 are executed in a loop;

step 405, selecting the minimum telephone traffic of each time interval every day as a threshold D, and comparing whether the number of users in the cell is less than the threshold D when the timer 3 or the timer 4 is overtime;

step 406, when the number of users in the cell is less than or equal to the threshold D, continuing to determine whether the threshold D is equal to 0, if so, performing cell blocking; as in step 407; if the threshold value is not 0 and the timer 3 is over time, but the timer 4 is not over time, the step 402 and 403 are executed in a loop; if the threshold is not 0 and the timer 4 is over time, then the cell switch is forced, in step 408, and step 407 is continued;

step 409, if the number of users in the cell is greater than the threshold D and the timer 3 is overtime, the step 402 and the step 403 are executed in a circulating manner; if the timer 4 is out of time, the OAM (Operation administration and Maintenance) is directly notified for processing, in step 410. The OAM may be handled, for example, in two cases:

1. directly abandoning the execution of the cell block command;

2. and issuing a cell block command with medium priority or high priority or changing a relevant threshold parameter, for example, changing a minimum traffic threshold value D of each time period every day, and issuing a cell block command with low priority again.

In the embodiment of the invention, for low-priority network congestion, the number of idle users in a cell is set according to the minimum telephone charge amount in each time period every day, and the users are correspondingly switched by adopting normal switching conditions, so that the damage under the low-priority condition is ensured to be minimum.

According to the invention, the cell blocking treatment is flexibly carried out by dividing into three network blocking conditions of high, medium and low according to different network blocking conditions, thereby reducing the switching failure caused by blocking when a user switches, or the problems of large-area call quality reduction, disconnection and the like caused by blocking.

Correspondingly, in the embodiment of the method for implementing cell blocking, an embodiment of the present invention further provides a device for implementing cell blocking, where as shown in fig. 5, the device includes:

a priority level obtaining module 501, configured to obtain a priority level of network congestion in a cell when the network congestion occurs in a cell of a base station;

a cell block module 502, configured to send block control information of a corresponding level to the cell according to the priority level, and control the cell block.

Through this device, can be according to the network jam that takes place under different actual conditions, divide the priority level of network jam, according to this priority level, select different district block processing mode, realize the nimble processing to the block, reduce the influence that brings user terminal's communication in the block district in-process to the block district, include: the problems of switching failure caused by network blockage when a user terminal switches cells, or immunization calling quality reduction, disconnection and the like caused by network blockage are reduced.

1. operation failure of the base station:

2. insufficient network resources:

3. equipment maintenance situations, such as product upgrades:

The embodiment of the invention can give the cell block processing with different priority modes according to the priority level of the cell network block:

and when the priority level of the cell network blocking is a medium priority, the cell blocking module is used for reducing the transmission power by adopting different strategies within a preset blocking time period range, switching the user terminal in the cell to an adjacent cell and then terminating the service of the cell.

And when the priority level of the network congestion of the cell is low, the cell blocking module is used for switching the user terminal in the cell to an adjacent cell until the cell is idle and terminating the service of the cell.

And when the priority level of the cell network blocking is low, the cell blocking module is used for immediately blocking the cell and terminating the service of the cell.

In addition, for the case of network congestion of a cell with a medium priority, when there are still user terminals in the cell after a preset blocking time period, the cell blocking module is further configured to forcibly switch the user terminals in the cell to an adjacent cell, and then terminate the service of the cell. Therefore, the phenomena of call drop, switching failure and the like caused by cell blocking when a user carries out conversation can be reduced, and normal communication and switching of the user in the cell blocking process are ensured.

The device embodiments are described relatively simply because they correspond substantially to the method embodiments, and reference may be made to some descriptions of the method embodiments for relevant points. The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.

It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-only Memory (ROM), a Random Access Memory (RAM), or the like.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the embodiments. Thus, the present embodiments are not intended to be limited to the embodiments shown herein but are to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for implementing cell blocking, the method comprising:

2. The method according to claim 1, wherein when the priority level of the cell network congestion is a medium priority level, the base station sends the corresponding level of congestion control information to the cell, and controlling the cell congestion specifically comprises:

3. The method according to claim 1, wherein when the priority level of the cell network congestion is low, the base station sends the corresponding level of congestion control information to the cell, and controlling the cell congestion specifically comprises:

4. The method according to claim 1, wherein when the priority level of the cell network congestion is high priority, the base station sends the corresponding level of congestion control information to the cell, and controlling the cell congestion specifically comprises:

5. The method of implementing cell occlusion of claim 2, further comprising:

6. An apparatus for implementing cell blocking, the apparatus comprising:

7. The device for realizing cell blocking according to claim 7, wherein when the priority level of the cell network blocking is a medium priority,

8. The device for realizing cell blocking according to claim 7, wherein when the priority level of the cell network blocking is low priority,

9. The apparatus of claim 7, wherein when the priority level of the cell network congestion is low priority level, the cell blocking module is configured to immediately perform blocking on the cell and terminate the service of the cell.

10. The apparatus of claim 8, wherein after a preset blocking time period elapses, the cell blocking module is further configured to forcibly switch the ue in the cell to an adjacent cell, and then terminate the service of the cell.