CN111092672A - Channel selection method and device - Google Patents
Channel selection method and device Download PDFInfo
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- CN111092672A CN111092672A CN201811242096.7A CN201811242096A CN111092672A CN 111092672 A CN111092672 A CN 111092672A CN 201811242096 A CN201811242096 A CN 201811242096A CN 111092672 A CN111092672 A CN 111092672A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/382—Monitoring; Testing of propagation channels for resource allocation, admission control or handover
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
- H04B17/345—Interference values
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
- H04L41/0803—Configuration setting
Abstract
The application discloses a channel selection method and a device, wherein the method comprises the following steps: a. when the base station performs initial configuration of the control channel, judging whether the base station has a preset main control channel and the main control channel is in an activated state, if so, executing the step b, otherwise, executing the step c; b. taking the main control channel as the current main control channel of the base station; ending the initial configuration; c. judging whether the base station has a preset backup control channel and the channel is in an activated state, if so, taking the backup control channel as the current main control channel of the base station; otherwise, determining the main control channel of the base station by adopting a preset preferential selection principle, wherein the preferential selection principle is as follows: the main control channel is preferentially selected from other activated channels except the GPS active reporting channel. The invention can realize reasonable selection of the main control channel of the narrow-band digital trunking communication system.
Description
Technical Field
The present invention relates to mobile communication technologies, and in particular, to a channel selection method and apparatus.
Background
The Police Digital Trunking (PDT) standard is a narrow-band trunking communication standard with Chinese proprietary intellectual property rights, and can meet the requirements of users in most trunking communication industries by focusing on the development direction of the future digital talkback technology. The PDT standard fully considers the situation of China, references and innovatively designs international mature standard technologies (such as Tetra, P25, DMR, MPT1327 and the like), follows five principles of high cost performance, safety and confidentiality, large area system, expandability and backward compatibility, and effectively solves the problem of converged communication of various emergency communication networks.
The PDT standard is based on the Chinese public security market, gives consideration to different levels of user requirements of counties, cities, provinces and countries and actual network construction requirements, supports low-cost single-base-station system communication, can also achieve efficient large-area system coverage, and meets the construction requirements of national-wide public security emergency communication command networks such as four-level networking. In emergency incidents such as earthquake, wind disaster, social security and the like, the system can be quickly accessed to the existing GIS dispatching platform of public security, realizes the functions of flexible networking, high-efficiency command dispatching, high-quality voice and data transmission and the like, and has the characteristics of quick response, safety and confidentiality.
The PDT standard has the advantages of efficient utilization of spectrum resources, large-area networking mode and smooth transition from analog MPT1327 to digital clustering. The system has the advantages of rich and expandable service functions, backward compatibility, lower cost of the system and the mobile station, higher network construction speed and lower overall operation and maintenance cost. In summary, PDT standards have long-term competitive advantages in the field of professional wireless communications. The autonomous security encryption technology is particularly suitable for the secrecy requirements of public security users.
The PDT system is a narrow-band digital trunking communication system, and the channel is composed of 12.5KHz bandwidth intervals. In the trunking mode, the PDT base station configures one control channel and several traffic channels. The control channel receives the service request and response of each terminal in uplink and sends the instruction response and broadcast in downlink. Each terminal switches to the service channel to carry out service after the control channel receives the instruction, and can switch back to the control channel to reside for waiting for the next service application and scheduling after the service is disconnected.
The roles of the channels are mainly divided into 3 types: a main control channel, a backup control channel, and a common traffic channel. The NMC/OMC may configure a primary control channel for each base station and a backup control channel (optional). In the process of implementing the present invention, the inventor finds that because the narrowband digital trunking system has only one main control channel, and all applications and broadcasts are completed in the main control channel, a channel selection scheme needs to be provided to implement reasonable selection of the main control channel, thereby ensuring normal operation of the system.
Disclosure of Invention
In view of this, the main objective of the present invention is to provide a channel selection method and apparatus, which can implement reasonable selection of a main control channel.
In order to achieve the above purpose, the embodiment of the present invention provides a technical solution:
a method of channel selection, comprising:
a. when the base station performs initial configuration of the control channel, judging whether the base station has a preset main control channel and the main control channel is in an activated state, if so, executing the step b, otherwise, executing the step c;
b. taking the main control channel as the current main control channel of the base station; ending the initial configuration;
c. judging whether the base station has a preset backup control channel and the backup control channel is in an activated state, if so, taking the backup control channel as a current main control channel of the base station; otherwise, determining the main control channel of the base station by adopting a preset preferential selection principle, wherein the preferential selection principle is as follows: the main control channel is preferentially selected from other activated channels except the GPS active reporting channel.
Preferably, determining the primary control channel of the base station comprises:
if other activated channels exist besides the GPS active reporting channel, selecting one channel from the other activated channels as a main control channel of the base station according to the channel number or the channel quality; and if not, preempting the GPS active reporting channel as a main control channel of the base station, and broadcasting the change or closing of the GPS active reporting channel.
Preferably, the selecting a channel as the primary control channel of the base station according to the channel number or the channel quality includes:
and selecting the channel with the minimum channel number or the maximum channel number or the good channel quality from other activated channels except the GPS active reporting channel.
Preferably, the method further comprises:
when the main control channel of the base station meets the main control switching condition, if the base station has a backup control channel at present and the backup control channel can work normally, the backup control channel is used as the current main control channel, and the channel meeting the main control switching condition is correspondingly detected or changed; and then, if the base station detects that the channel meeting the master control switching condition meets the master control recovery condition, changing the current master control channel into the channel meeting the master control recovery condition, and recovering the master control channel before the change into a common service channel, wherein the master control switching condition comprises that a fault occurs or the interference index is higher than a preset threshold value, and the master control recovery condition comprises that the fault is eliminated or the interference index is lower than the threshold value.
Preferably, the method further comprises:
when a main control channel of the base station meets a main control switching condition, if the base station does not have a backup control channel which can normally work at present, when other activated channels except a GPS active reporting channel exist, selecting a channel with the minimum channel number or the maximum channel number or the good channel quality from the other activated channels as the current main control channel of the base station, and when other activated channels except the GPS active reporting channel do not exist, preempting the GPS active reporting channel as the current main control channel of the base station, broadcasting the change or closing of the GPS active reporting channel, and carrying out corresponding detection or change processing on the channel meeting the main control switching condition; then, if the base station detects that the channel meeting the master control switching condition meets the master control recovery condition, the current master control channel is changed into the channel meeting the master control recovery condition, meanwhile, the master control channel before the change is set as a common service channel or a GSP active reporting channel, the master control switching condition comprises that a fault occurs or an interference index is higher than a preset threshold value, and the master control recovery condition comprises that the fault is eliminated or the interference index is reduced to be lower than the threshold value.
Preferably, the performing of the corresponding detection or change processing on the channel satisfying the master switching condition includes:
if the channel meeting the master control switching condition is closed, continuously detecting whether the channel is recovered to be normal; otherwise, the channel is changed to a traffic channel.
A channel selection apparatus, comprising:
the first module is used for judging whether the base station has a preset main control channel and the channel is an activated channel when the base station performs initial configuration of the control channel, if so, the main control channel is used as the current main control channel of the base station, and otherwise, the second module is triggered to execute the control channel;
a second module, configured to determine whether the base station has a preset backup control channel and the channel is an active channel, and if so, use the backup control channel as a current primary control channel of the base station; otherwise, determining the main control channel of the base station by adopting a preset preferential selection principle, wherein the preferential selection principle is as follows: the main control channel is preferentially selected from other activated channels except the GPS active reporting channel.
Preferably, the second module is configured to select one channel as the main control channel of the base station from other activated channels according to a channel number or channel quality if the other activated channels are available except for the GPS active reporting channel; and if not, preempting the GPS active reporting channel as a main control channel of the base station, and broadcasting the change or closing of the GPS active reporting channel.
Preferably, the second module is configured to select a channel with the smallest channel number or the largest channel number or with good channel quality from other activated channels except for the GPS active reporting channel.
Preferably, the apparatus further comprises:
a third module, configured to, when a main control channel of the base station meets a main control switching condition, if the base station currently has a backup control channel and the backup control channel can normally operate, use the backup control channel as the current main control channel and perform corresponding detection or change processing on the channel meeting the main control switching condition; and then, if the base station detects that the channel meeting the master control switching condition meets the master control recovery condition, changing the current master control channel into the channel meeting the master control recovery condition, and recovering the master control channel before the change into a common service channel, wherein the master control switching condition comprises that a fault occurs or the interference index is higher than a preset threshold value, and the master control recovery condition comprises that the fault is eliminated or the interference index is lower than the threshold value.
Preferably, the third module is further configured to, when the main control channel of the base station meets the main control switching condition, if the base station does not currently have a backup control channel that can normally operate, select, from other activated channels when there are other activated channels other than the GPS active reporting channel, a channel with a minimum channel number or a maximum channel number or good channel quality as the current main control channel of the base station, and when there are no other activated channels other than the GPS active reporting channel, preempt the GPS active reporting channel as the current main control channel of the base station, broadcast the GPS active reporting channel for change or closing at the same time, and perform corresponding detection or change processing on the channel meeting the main control switching condition; then, if the base station detects that the channel meeting the master control switching condition meets the master control recovery condition, the current master control channel is changed into the channel meeting the master control recovery condition, meanwhile, the master control channel before the change is set as a common service channel or a GSP active reporting channel, the master control switching condition comprises that a fault occurs or an interference index is higher than a preset threshold value, and the master control recovery condition comprises that the fault is eliminated or the interference index is reduced to be lower than the threshold value.
Preferably, the third module is configured to continuously detect whether the channel is recovered to normal if the channel meeting the master switching condition is closed; otherwise, the channel is changed to a traffic channel.
In summary, when the initial configuration of the control channel is performed for the base station, if the main control channel is set for the base station in advance, the preset main control channel is directly used as the main control channel for the initial configuration, if the main control channel is not set, the preset backup control channel is preferentially considered, and if the preset backup control channel is not set, the main control channel is preferentially selected from other active channels except the GPS active reporting channel, so that the reasonable configuration of the main control channel of the base station can be realized.
Drawings
FIG. 1 is a schematic flow chart of a method according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an apparatus according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic flow chart of a method according to an embodiment of the present invention, and as shown in fig. 1, the channel selection method implemented by the embodiment mainly includes:
It should be noted that, in practical applications, the network manager may configure one primary control channel for each base station, and configure one backup control channel (optional). The network manager can also configure a GPS active reporting channel for a base station, the base station can broadcast the GPS active reporting channel number, and each terminal can actively report the GPS position information to the base station when the channel is idle.
The step is used for judging whether a main control channel preset by an administrator for the base station exists or not so that the preset main control channel can be preferentially utilized to carry out corresponding setting.
103-105, judging whether the base station has a preset backup control channel and the backup control channel is in an active state, and if so, taking the backup control channel as a current main control channel of the base station; otherwise, determining the main control channel of the base station by adopting a preset preferential selection principle, wherein the preferential selection principle is as follows: the main control channel is preferentially selected from other activated channels except the GPS active reporting channel.
The main control channel is used for receiving and processing various calling service requests of the base station, and after the main control channel of the base station is determined, the main control channel is used for receiving and processing various calling service requests of the base station.
In this step, if there is no preset main control channel and backup control channel, the main control channel is selected from other active channels except the GPS active reporting channel, so as to not affect the terminal reporting GPS information as much as possible. However, when there is no other active channel, it will also consider occupying the active reporting channel of GPS to preferentially ensure the main control channel to use the channel resource, so as to ensure the robustness of the main control channel. Preferably, the following method can be used to determine the primary control channel of the base station:
if other activated channels exist besides the GPS active reporting channel, selecting one channel from the other activated channels as a main control channel of the base station according to the channel number or the channel quality; and if not, preempting the GPS active reporting channel as a main control channel of the base station, and broadcasting the change or closing of the GPS active reporting channel.
In the method, the GPS active reporting channel and the main control channel can not be the same channel, so that the normal use of the main control channel is ensured.
Preferably, in the above method, in order to facilitate implementation or ensure the communication quality of the current primary control channel, the following method may be adopted to select one channel as the primary control channel of the base station according to the channel number or the channel quality:
and selecting the channel with the minimum channel number or the maximum channel number or the good channel quality from other activated channels except the GPS active reporting channel.
Further, in order to ensure the robustness of the main control channel and improve the reliability of the system, when the main control channel fails or needs to be closed due to strong disturbance, a suitable channel can be selected and switched to be the main control channel by adopting the following method so as to ensure the work of the system, and after the environment is changed or the original main control channel or the backup control channel is recovered, the channel is automatically switched back to the previous-stage channel or directly switched back to the main control channel.
When the main control channel of the base station meets the main control switching condition, if the base station has a backup control channel at present and the backup control channel can work normally, the backup control channel is used as the current main control channel, and the channel meeting the main control switching condition is correspondingly detected or changed; and then, if the base station detects that the channel meeting the master control switching condition meets the master control recovery condition, changing the current master control channel into the channel meeting the master control recovery condition, and recovering the master control channel before the change into a common service channel, wherein the master control switching condition comprises that a fault occurs or the interference index is higher than a preset threshold value, and the master control recovery condition comprises that the fault is eliminated or the interference index is lower than the threshold value.
When a main control channel of the base station meets a main control switching condition, if the base station does not have a backup control channel which can normally work at present, when other activated channels except a GPS active reporting channel exist, selecting a channel with the minimum channel number or the maximum channel number or the good channel quality from the other activated channels as the current main control channel of the base station, and when other activated channels except the GPS active reporting channel do not exist, preempting the GPS active reporting channel as the current main control channel of the base station, broadcasting the change or closing of the GPS active reporting channel, and carrying out corresponding detection or change processing on the channel meeting the main control switching condition; then, if the base station detects that the channel meeting the master control switching condition meets the master control recovery condition, the current master control channel is changed into the channel meeting the master control recovery condition, meanwhile, the master control channel before the change is set as a common service channel or a GSP active reporting channel, the master control switching condition comprises that a fault occurs or an interference index is higher than a preset threshold value, and the master control recovery condition comprises that the fault is eliminated or the interference index is reduced to be lower than the threshold value.
Preferably, the following method may be adopted to perform corresponding detection or change processing on the channels meeting the master control switching condition:
if the channel meeting the master control switching condition is closed, continuously detecting whether the channel is recovered to be normal; otherwise, the channel is changed to a traffic channel.
In practical applications, the selection of the channel in the above embodiments is specifically performed by the call control layer of the base station. And after the channel configuration is changed, the base station performs corresponding broadcast to ensure that the terminal normally receives the control information.
Fig. 2 is a schematic structural diagram of a channel selection apparatus corresponding to the above method embodiment, as shown in fig. 2, the apparatus includes:
a channel selection apparatus, comprising:
the first module is used for judging whether the base station has a preset main control channel and the channel is an activated channel when the base station performs initial configuration of the control channel, if so, the main control channel is used as the current main control channel of the base station, and otherwise, the second module is triggered to execute the control channel;
a second module, configured to determine whether the base station has a preset backup control channel and the channel is an active channel, and if so, use the backup control channel as a current primary control channel of the base station; otherwise, determining the main control channel of the base station by adopting a preset preferential selection principle, wherein the preferential selection principle is as follows: the main control channel is preferentially selected from other activated channels except the GPS active reporting channel.
Preferably, the second module is configured to select one channel as the main control channel of the base station from other activated channels according to a channel number or channel quality if the other activated channels are available except for the GPS active reporting channel; and if not, preempting the GPS active reporting channel as a main control channel of the base station, and broadcasting the change or closing of the GPS active reporting channel.
Preferably, the second module is configured to select a channel with the smallest channel number or the largest channel number or with good channel quality from other activated channels except for the GPS active reporting channel.
Preferably, the apparatus further comprises:
a third module, configured to, when a main control channel of the base station meets a main control switching condition, if the base station currently has a backup control channel and the backup control channel can normally operate, use the backup control channel as the current main control channel and perform corresponding detection or change processing on the channel meeting the main control switching condition; and then, if the base station detects that the channel meeting the master control switching condition meets the master control recovery condition, changing the current master control channel into the channel meeting the master control recovery condition, and recovering the master control channel before the change into a common service channel, wherein the master control switching condition comprises that a fault occurs or the interference index is higher than a preset threshold value, and the master control recovery condition comprises that the fault is eliminated or the interference index is lower than the threshold value.
Preferably, the third module is further configured to, when the main control channel of the base station meets the main control switching condition, if the base station does not currently have a backup control channel that can normally operate, select, from other activated channels when there are other activated channels other than the GPS active reporting channel, a channel with a minimum channel number or a maximum channel number or good channel quality as the current main control channel of the base station, and when there are no other activated channels other than the GPS active reporting channel, preempt the GPS active reporting channel as the current main control channel of the base station, broadcast the GPS active reporting channel for change or closing at the same time, and perform corresponding detection or change processing on the channel meeting the main control switching condition; then, if the base station detects that the channel meeting the master control switching condition meets the master control recovery condition, the current master control channel is changed into the channel meeting the master control recovery condition, meanwhile, the master control channel before the change is set as a common service channel or a GSP active reporting channel, the master control switching condition comprises that a fault occurs or an interference index is higher than a preset threshold value, and the master control recovery condition comprises that the fault is eliminated or the interference index is reduced to be lower than the threshold value.
Preferably, the third module is configured to continuously detect whether the channel is recovered to normal if the channel meeting the master switching condition is closed; otherwise, the channel is changed to a traffic channel.
To facilitate a clearer explanation of the present invention, five specific application examples of the above method embodiments are given below:
example one:
the network management system configures a main control channel (channel number 1) for the base station 1, configures a backup control channel (channel number 2) at the same time, and configures the numbers 3-8 of the rest channels as service channels. The calling control layer of the base station defaults to use a main control channel configured by a network manager as a main control channel of the current base station, and receives and processes various calling service requests of the base station.
When the main channel fails and can not work normally, the base station call control layer selects the channel 2 as the main control channel and broadcasts the main control channel change. If the channel 1 is closed, the detection is continuously recovered, and if the channel 1 is not closed, the base station call control layer can change the channel 1 into a traffic channel.
If the failure of the channel 1 is recovered and can work normally after a period of time, the call control layer of the base station will reassign the channel 1 as the main control channel, which is responsible for receiving and processing various call service requests of the base station, and recover the channel 2 as the backup control channel for use.
Example two:
the network manager configures a main control channel (channel number 1) for the base station 1, and the numbers 2-8 of the rest channels are service channels. The calling control layer of the base station defaults to use a main control channel configured by a network manager as a main control channel of the current base station, and receives and processes various calling service requests of the base station.
When the main channel fails and can not work normally, the base station call control layer selects the channel 2 as the main control channel and broadcasts the main control channel change. If the channel 1 is closed, the detection is continuously recovered, and if the channel 1 is not closed, the base station call control layer can change the channel 1 into a traffic channel.
If the failure of the channel 1 is recovered and can work normally after a period of time, the call control layer of the base station will reassign the channel 1 as the main control channel, which is responsible for receiving and processing various call service requests of the base station, and recover the channel 2 as the service channel for use.
Example three:
the network manager configures a main control channel (channel number 1) for the base station 1, and the GPS actively reports the number of the other channels (channel number 2) 3-8 as service channels. The calling control layer of the base station defaults to use a main control channel configured by a network manager as a main control channel of the current base station, and receives and processes various calling service requests of the base station.
When the main channel fails and can not work normally, the base station call control layer selects the channel 3 as the main control channel and broadcasts the main control channel change. If the channel 1 is closed, the detection is continuously recovered, and if the channel 1 is not closed, the base station call control layer can change the channel 1 into a traffic channel.
If the failure of the channel 1 is recovered and can work normally after a period of time, the call control layer of the base station will reassign the channel 1 as the main control channel, which is responsible for receiving and processing various call service requests of the base station, and recover the channel 3 as the service channel for use.
Example four:
the network manager configures a main control channel (channel number 1) for the base station 1, and the GPS actively reports the channel (channel number 2). The base station is currently only active on channel 1 and channel 2. The calling control layer of the base station defaults to use a main control channel configured by a network manager as a main control channel of the current base station, and receives and processes various calling service requests of the base station.
When the main channel fails and can not work normally, the base station call control layer selects the channel 2 as the main control channel, and simultaneously, the GPS actively reports the channel cancellation and broadcasts the main control channel change. If the channel 1 is closed, the detection is continuously recovered, and if the channel 1 is not closed, the base station call control layer can change the channel 1 into a traffic channel.
If the fault of the channel 1 is recovered and can work normally after a period of time, the call control layer of the base station will reassign the channel 1 as the main control channel, which is responsible for receiving and processing various call service requests of the base station, and recover the channel 3 as the service channel or the GPS active reporting channel for use.
Example five:
the network manager configures a main control channel (channel number 1) for the base station 1, and the GPS actively reports the number of the other channels (channel number 2) 3-8 as service channels. The calling control layer of the base station defaults to use a main control channel configured by a network manager as a main control channel of the current base station, and receives and processes various calling service requests of the base station.
When the main channel fails and can not work normally, the base station call control layer selects a channel 5 (with the best uplink channel quality) as a main control channel and broadcasts the change of the main control channel. If the channel 1 is closed, the detection is continuously recovered, and if the channel 1 is not closed, the base station call control layer can change the channel 1 into a traffic channel.
If the failure of the channel 1 is recovered and can work normally after a period of time, the call control layer of the base station will reassign the channel 1 as the main control channel, which is responsible for receiving and processing various call service requests of the base station, and recover the channel 5 as the service channel for use.
In summary, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (12)
1. A method for channel selection, comprising:
a. when the base station performs initial configuration of the control channel, judging whether the base station has a preset main control channel and the main control channel is in an activated state, if so, executing the step b, otherwise, executing the step c;
b. taking the main control channel as the current main control channel of the base station; ending the initial configuration;
c. judging whether the base station has a preset backup control channel and the backup control channel is in an activated state, if so, taking the backup control channel as a current main control channel of the base station; otherwise, determining the main control channel of the base station by adopting a preset preferential selection principle, wherein the preferential selection principle is as follows: the main control channel is preferentially selected from other activated channels except the GPS active reporting channel.
2. The method of claim 1, wherein determining the primary control channel of the base station comprises:
if other activated channels exist besides the GPS active reporting channel, selecting one channel from the other activated channels as a main control channel of the base station according to the channel number or the channel quality; and if not, preempting the GPS active reporting channel as a main control channel of the base station, and broadcasting the change or closing of the GPS active reporting channel.
3. The method of claim 2, wherein selecting a channel as the primary control channel of the base station according to the channel number or the channel quality comprises:
and selecting the channel with the minimum channel number or the maximum channel number or the good channel quality from other activated channels except the GPS active reporting channel.
4. The method of claim 1, further comprising:
when the main control channel of the base station meets the main control switching condition, if the base station has a backup control channel at present and the backup control channel can work normally, the backup control channel is used as the current main control channel, and the channel meeting the main control switching condition is correspondingly detected or changed; and then, if the base station detects that the channel meeting the master control switching condition meets the master control recovery condition, changing the current master control channel into the channel meeting the master control recovery condition, and recovering the master control channel before the change into a common service channel, wherein the master control switching condition comprises that a fault occurs or the interference index is higher than a preset threshold value, and the master control recovery condition comprises that the fault is eliminated or the interference index is lower than the threshold value.
5. The method of claim 1, further comprising:
when a main control channel of the base station meets a main control switching condition, if the base station does not have a backup control channel which can normally work at present, when other activated channels except a GPS active reporting channel exist, selecting a channel with the minimum channel number or the maximum channel number or the good channel quality from the other activated channels as the current main control channel of the base station, and when other activated channels except the GPS active reporting channel do not exist, preempting the GPS active reporting channel as the current main control channel of the base station, broadcasting the change or closing of the GPS active reporting channel, and carrying out corresponding detection or change processing on the channel meeting the main control switching condition; then, if the base station detects that the channel meeting the master control switching condition meets the master control recovery condition, the current master control channel is changed into the channel meeting the master control recovery condition, meanwhile, the master control channel before the change is set as a common service channel or a GSP active reporting channel, the master control switching condition comprises that a fault occurs or an interference index is higher than a preset threshold value, and the master control recovery condition comprises that the fault is eliminated or the interference index is reduced to be lower than the threshold value.
6. The method according to claim 4 or 5, wherein the performing the corresponding detection or change processing on the channel satisfying the master switching condition comprises:
if the channel meeting the master control switching condition is closed, continuously detecting whether the channel is recovered to be normal; otherwise, the channel is changed to a traffic channel.
7. A channel selection apparatus, comprising:
the first module is used for judging whether the base station has a preset main control channel and the channel is an activated channel when the base station performs initial configuration of the control channel, if so, the main control channel is used as the current main control channel of the base station, and otherwise, the second module is triggered to execute the control channel;
a second module, configured to determine whether the base station has a preset backup control channel and the channel is an active channel, and if so, use the backup control channel as a current primary control channel of the base station; otherwise, determining the main control channel of the base station by adopting a preset preferential selection principle, wherein the preferential selection principle is as follows: the main control channel is preferentially selected from other activated channels except the GPS active reporting channel.
8. The apparatus of claim 7, wherein the second module is configured to select one channel as the primary control channel of the base station according to a channel number or a channel quality from other active channels if there are other active channels except the GPS active reporting channel; and if not, preempting the GPS active reporting channel as a main control channel of the base station, and broadcasting the change or closing of the GPS active reporting channel.
9. The apparatus of claim 8, wherein the second module is configured to select a channel with a minimum channel number or a maximum channel number or a good channel quality from other active channels except for the GPS active reporting channel.
10. The apparatus of claim 7, further comprising:
a third module, configured to, when a main control channel of the base station meets a main control switching condition, if the base station currently has a backup control channel and the backup control channel can normally operate, use the backup control channel as the current main control channel and perform corresponding detection or change processing on the channel meeting the main control switching condition; and then, if the base station detects that the channel meeting the master control switching condition meets the master control recovery condition, changing the current master control channel into the channel meeting the master control recovery condition, and recovering the master control channel before the change into a common service channel, wherein the master control switching condition comprises that a fault occurs or the interference index is higher than a preset threshold value, and the master control recovery condition comprises that the fault is eliminated or the interference index is lower than the threshold value.
11. The apparatus of claim 7, wherein the third module is further configured to, when the main control channel of the base station meets a main control handover condition, if the base station does not currently have a backup control channel that can normally operate, select, as the current main control channel of the base station, a channel with a minimum channel number or a maximum channel number or good channel quality from other active channels when there are other active channels except the GPS active reporting channel, and when there are no other active channels except the GPS active reporting channel, preempt the GPS active reporting channel as the current main control channel of the base station, and broadcast the GPS active reporting channel to change or close, and perform corresponding detection or change processing on the channel meeting the main control handover condition; then, if the base station detects that the channel meeting the master control switching condition meets the master control recovery condition, the current master control channel is changed into the channel meeting the master control recovery condition, meanwhile, the master control channel before the change is set as a common service channel or a GSP active reporting channel, the master control switching condition comprises that a fault occurs or an interference index is higher than a preset threshold value, and the master control recovery condition comprises that the fault is eliminated or the interference index is reduced to be lower than the threshold value.
12. The apparatus according to claim 10 or 11, wherein the third module is configured to continuously detect whether the channel returns to normal if the channel satisfying the master handover condition is closed; otherwise, the channel is changed to a traffic channel.
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