CN112449397A - Main control channel switching method and device of PDT system - Google Patents
Main control channel switching method and device of PDT system Download PDFInfo
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- CN112449397A CN112449397A CN201910821656.2A CN201910821656A CN112449397A CN 112449397 A CN112449397 A CN 112449397A CN 201910821656 A CN201910821656 A CN 201910821656A CN 112449397 A CN112449397 A CN 112449397A
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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
- H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
- H04W36/305—Handover due to radio link failure
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/04—Arrangements for maintaining operational condition
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/06—Reselecting a communication resource in the serving access point
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
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Abstract
The application discloses a main control channel switching method of a PDT system, which comprises the following steps: when the master control channel fails, the standby master control channel is searched for switching the master control channel; if no available standby main control channel exists, searching an idle service channel for switching the main control channel; and if no available idle traffic channel exists, seizing a low-priority traffic channel to perform master control channel switching. The application also discloses a corresponding device. By applying the technical scheme disclosed by the application, the switching of the master control channel can be quicker, and the normal operation of the base station service under extreme conditions is ensured.
Description
Technical Field
The present application relates to the field of trunking communication technologies, and in particular, to a method and device for switching a main control channel of a PDT system.
Background
A special Digital Trunking (PDT) system is an important component of a private network system, occupies an important position in various emergency command scenes, and the coverage of a base station determines the width and the depth of the whole PDT system, so that the system is used as a main control channel of the brain of the base station and is important for the normal operation and the performance guarantee of the whole PDT service.
At present, some base station systems do not guarantee the reliability of the main control channel, namely only one main control channel is provided, and no main control channel is provided; some base station systems ensure the reliability of the main control channel, and the following 3 methods are mainly adopted:
(1) configuring a standby main control channel, namely: a spare channel is configured in a base station as a spare main control channel, and when the main control channel fails, the system is switched to the configured spare main control channel.
(2) Periodically switching the master channel, namely: the main control channel is switched at regular intervals and is switched into other channels to be used as the main control channel.
(3) Using the idle traffic channel as a master channel, namely: when the main control channel has a fault, the system searches for an available idle service channel as the main control channel to perform switching.
Obviously, if reliability of the main control channel is not guaranteed, once the main control channel fails, the whole base station system is unavailable, and user experience is seriously influenced; the reliability of the main control channel is ensured mainly by switching the main control channel in the prior art.
The main control channel switching is that when the main control channel fails, the system automatically switches the main control channel to ensure the normal operation of the service. However, the above three prior art solutions have their respective disadvantages, which are specifically described as follows:
(1) for the method of configuring the standby main control channel, when the standby main control channel is unavailable due to various reasons or the standby main control channel fails in the operation process, the main control channel cannot be switched or cannot be used after switching, so that the whole base station service cannot be used, and the continuity and reliability of the service cannot be effectively ensured in time.
For example: when the configured standby main control channel has configuration errors (for example, the configuration of the standby main control channel is not performed), carrier interference, a fault occurs during operation, and other scenes, the whole base station has no available main control channel, the service operation of the whole PDT system is affected, and the consequences are very serious.
(2) For the method of periodically switching the main control channel, the following problems mainly exist:
firstly, the periodic switching can cause the switching time delay of the base station;
secondly, some services are performed periodically, and air interface resources are wasted, for example, a terminal needs to access a network again every time a main control channel is switched;
thirdly, when the main control channel fails, the user experience is seriously influenced by switching to the available main control channel only after the period of the main control channel is reached.
(3) For the method using the idle traffic channel as the main control channel, when the main control channel fails, the base station needs to search the available traffic channel again to serve as the main control channel, the switching delay is long, and further, the normal traffic delay may be long, and when no available traffic channel serves as the main control channel, the entire base station service may even be affected.
Therefore, none of the above three existing methods can effectively ensure the reliability of the main control channel.
Disclosure of Invention
The application provides a main control channel switching method and equipment of a PDT system, so that the main control channel switching is quicker, and the normal operation of a base station service under an extreme condition is ensured.
The application discloses a main control channel switching method of a PDT system, which comprises the following steps:
when the master control channel fails, the standby master control channel is searched for switching the master control channel;
if no available standby main control channel exists, searching an idle service channel for switching the main control channel;
and if no available idle traffic channel exists, seizing a low-priority traffic channel to perform master control channel switching.
Preferably, the method further comprises:
and pre-configuring a standby main control channel.
Preferably, the spare main control channel that is not available specifically includes: the standby main control channel can not be found or the standby main control channel has a fault.
Preferably, the low priority traffic channel includes: the global positioning system GPS locates data for the dedicated pull-up channel.
The application also discloses a base station device, including: the main control channel detection module and the main control channel switching module, wherein:
the master control channel detection module is used for sending a master control channel switching notice to the master control channel switching module when detecting that the master control channel has a fault;
the master control channel switching module is used for deciding an available master control channel number according to the master control channel switching notification sent by the master control channel detection module, sending the available master control channel number down and switching master control channels;
the specific operation of the master control channel switching module for deciding the available master control channel number includes:
searching the configured standby main control channel, and if an available standby main control channel is searched, taking the searched available standby main control channel number as the decided available main control channel number;
when the available standby main control channel cannot be searched, searching an available idle service channel, and if the available idle service channel is searched, taking the number of the searched available idle service channel as the number of the decided available main control channel;
and when the available idle service channel cannot be searched, searching a low-priority service channel, preempting the low-priority service channel, and taking the number of the low-priority service channel as the number of the decided available main control channel after the preemption is finished.
Preferably, when the master control channel switching module cannot find the standby master control channel or the standby master control channel has a fault, it is determined that there is no available standby master control channel.
Preferably, the main control channel switching module seizes a dedicated pull-up channel for GPS positioning data as a low priority traffic channel.
According to the technical scheme, the standby main control channel is configured, the idle service channel is used as the main control channel, and the low-priority service channel is seized as the main control channel, so that the main control channel can be quickly switched when the main control channel fails, and the whole base station service is still not influenced when extreme conditions occur, such as unavailable standby main control channel, unavailable service channel and the like, so that the robustness of the whole base station service is effectively ensured. Specifically, the method comprises the following steps:
1. when the main control channel fails, the standby main control channel is configured, so that the standby main control channel can be quickly switched to;
2. when the standby main control channel fails, the standby main control channel can be switched to an idle service channel by searching the idle service channel;
3. when no idle traffic channel is available, the low priority traffic channel is seized as the main control channel.
Therefore, the scheme provided by the invention can ensure that the master control channel is switched more quickly, and can still ensure the normal operation of the base station service under extreme conditions.
Drawings
FIG. 1 is a schematic diagram of a base station apparatus according to the present invention;
fig. 2 is a schematic diagram of a main control channel switching process according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is further described in detail below by referring to the accompanying drawings and examples.
In the operation process of the base station, when the conditions such as hardware failure, carrier interference and the like occur, the main control channel may fail, thereby affecting the whole base station service and causing interruption and even paralysis of the PDT communication service, and therefore, when the main control channel fails, a timely and effective main control channel switching technology is needed to ensure the robustness of the whole PDT service.
Therefore, the invention provides a main control channel switching method of a PDT system, and the whole carrier switching method comprises three parts: configuring a standby main control channel, taking an idle service channel as a main control channel, and seizing a low-priority service channel as the main control channel. The following three parts are described respectively:
1. configuring a standby main control channel: when the main control channel goes wrong, the base station firstly searches the configured standby main control channel for switching. The base station can be switched quickly with low time delay by configuring the standby main control channel, and the whole service is almost lossless when the main control channel breaks down.
2. Taking the idle traffic channel as a main control channel: when the standby main control carrier fails, the continuous operation of the whole base station service is also required to be ensured, and at the moment, the base station reduces the influence on the normal operation of the base station service when the standby main control channel fails by searching for an idle service channel to serve as a main control channel.
3. Seizing the low priority traffic channel as the master control channel: when the service is busy and no available service channel exists, the invention continuously seizes the low-priority service channel as the main control channel so as to continuously ensure the continuous operation of the whole base station service. Specifically, the technical scheme adopts a pull-up channel dedicated for preempting Global Positioning System (GPS) positioning data as a main control channel, so that when an extreme condition occurs, the whole base station service can still normally operate.
The invention can make the main control channel fast switch when the main control channel is in failure, and the whole base station service is still not affected when extreme conditions occur, such as the main control channel is unavailable, no available service channel occurs, and the like, thereby effectively ensuring the robustness of the whole base station service.
Corresponding to the above method, the present application also provides a corresponding base station device, whose composition structure is shown in fig. 1, and the base station device includes: the main control channel detection module and the main control channel switching module, wherein:
the master control channel detection module is used for sending a master control channel switching notice to the master control channel switching module when detecting that the master control channel has a fault;
the master control channel switching module is used for deciding an available master control channel number according to the master control channel switching notification sent by the master control channel detection module, sending the available master control channel number down and switching master control channels;
the specific operation of the master control channel switching module for deciding the available master control channel number includes:
searching the configured standby main control channel, and if an available standby main control channel is searched, taking the searched available standby main control channel number as the decided available main control channel number;
when the available standby main control channel cannot be searched, searching an available idle service channel, and if the available idle service channel is searched, taking the number of the searched available idle service channel as the number of the decided available main control channel;
and when the available idle service channel cannot be searched, searching a low-priority service channel, preempting the low-priority service channel, and taking the number of the low-priority service channel as the number of the decided available main control channel after the preemption is finished.
The technical solution of the present invention is further described in detail by a preferred embodiment.
Fig. 2 is a schematic diagram of a main control channel switching process in a preferred embodiment of the present invention, the process includes:
1. when the master control channel detection module detects that the master control channel fails, the master control channel switching module is informed of the carrier switching by sending a master control channel switching notice to the master control channel switching module.
2. When the main control channel switching module receives the main control channel switching notice of the main control channel detection module, the available main control channel number is decided according to the following steps:
firstly, a main control channel switching module searches a configured standby main control channel, if an available standby main control channel is searched, the searched available standby main control channel number is used as a decided available main control channel number, and the channel number of the standby main control channel is directly sent down;
when the standby main control channel cannot be searched or the standby main control channel has a fault, searching an available idle service channel, if the available idle service channel is searched, taking the searched available idle service channel number as the decided available main control channel number, and directly issuing the channel number of the available idle service channel;
and when the available idle service channel cannot be searched, searching a low-priority service channel, preempting the low-priority service channel, and issuing a channel number of the preempting channel after the preemption is completed, wherein the channel number is used as the decided available main control channel number.
3. And when the main control channel switching module decides the number of the available main control channel, switching the main control carrier.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the scope of protection of the present application.
Claims (7)
1. A main control channel switching method of a PDT system is characterized by comprising the following steps:
when the master control channel fails, the standby master control channel is searched for switching the master control channel;
if no available standby main control channel exists, searching an idle service channel for switching the main control channel;
and if no available idle traffic channel exists, seizing a low-priority traffic channel to perform master control channel switching.
2. The method of claim 1, further comprising:
and pre-configuring a standby main control channel.
3. The method of claim 1, wherein:
the unavailable standby main control channel specifically comprises: the standby main control channel can not be found or the standby main control channel has a fault.
4. A method according to any one of claims 1 to 3, characterized in that:
the low priority traffic channel includes: the global positioning system GPS locates data for the dedicated pull-up channel.
5. A base station apparatus, comprising: the main control channel detection module and the main control channel switching module, wherein:
the master control channel detection module is used for sending a master control channel switching notice to the master control channel switching module when detecting that the master control channel has a fault;
the master control channel switching module is used for deciding an available master control channel number according to the master control channel switching notification sent by the master control channel detection module, sending the available master control channel number down and switching master control channels;
the specific operation of the master control channel switching module for deciding the available master control channel number includes:
searching the configured standby main control channel, and if an available standby main control channel is searched, taking the searched available standby main control channel number as the decided available main control channel number;
when the available standby main control channel cannot be searched, searching an available idle service channel, and if the available idle service channel is searched, taking the number of the searched available idle service channel as the number of the decided available main control channel;
and when the available idle service channel cannot be searched, searching a low-priority service channel, preempting the low-priority service channel, and taking the number of the low-priority service channel as the number of the decided available main control channel after the preemption is finished.
6. The apparatus of claim 5, wherein:
and when the master control channel switching module cannot find the standby master control channel or the standby master control channel has a fault, judging that no available standby master control channel exists.
7. The apparatus of claim 5 or 6, wherein:
and the master control channel switching module takes a GPS positioning data dedicated pull-up channel as a low-priority service channel for preemption.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116170383A (en) * | 2023-02-08 | 2023-05-26 | 广州汇电云联数科能源有限公司 | Energy storage power station communication networking method, device, equipment and storage medium |
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