CN107277926B - Channel migration method and device for digital cluster system - Google Patents
Channel migration method and device for digital cluster system Download PDFInfo
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- CN107277926B CN107277926B CN201710482138.3A CN201710482138A CN107277926B CN 107277926 B CN107277926 B CN 107277926B CN 201710482138 A CN201710482138 A CN 201710482138A CN 107277926 B CN107277926 B CN 107277926B
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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
- H04W72/0446—Resources in time domain, e.g. slots or frames
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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
- H04W72/52—Allocation or scheduling criteria for wireless resources based on load
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention relates to a channel migration method and device for a digital cluster system. The method comprises the following steps: detecting that a first channel machine has idle service channels, and simultaneously detecting that the number of the service channels in the working state in a second channel machine is less than or equal to the number of the idle service channels; and migrating the service of the second channel machine to an idle service channel of the first channel machine, wherein the second channel machine enters a dormant state. By implementing the invention, the power consumption of the channel machine is reduced by using the service channel migration, thereby reducing the power consumption of the cluster system.
Description
Technical Field
The present invention relates to the field of trunking system communications, and in particular, to a method and an apparatus for migrating channels of a digital trunking system.
Background
A plurality of service channels generally exist under a cluster system base station, a public digital cluster system (PDT) adopts a time division multiple access mode, one physical service channel has two logic service channels, and the service channels are used for bearing conversation services.
After the voice service in the existing public digital trunking system is established, the distributed service channel is kept unchanged until the whole voice service is finished. By adopting the service channel using mode, because the service channel is always unchanged before the whole voice service is finished, two channels of communication service occupy two channel machines, even if the two channel machines are in a working state at the same time, the power consumption of the system is increased, and particularly the system is used in a mobile mode.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a method and an apparatus for migrating channels of a digital trunking system, aiming at the defect of high system power consumption caused by unreasonable traffic channel allocation of the existing channel machine in the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows: a channel migration method of a digital cluster system is constructed, and the method comprises the following steps:
s1: detecting that a first channel machine has idle service channels, and simultaneously detecting that the number of the service channels in the working state in a second channel machine is less than or equal to the number of the idle service channels;
s2: and migrating the service of the second channel machine to an idle service channel of the first channel machine, wherein the second channel machine enters a dormant state.
Preferably, in the channel migration method of the digital trunking system according to the present invention, the first channel machine and the second channel machine respectively include two service channels;
the step S1 includes:
s11: and detecting that one of the traffic channels of the first channel machine is in a working state, and simultaneously detecting that one of the traffic channels of the second channel machine is in a working state.
Preferably, before executing step S2, the method for migrating channels in a digital trunking system according to the present invention further includes:
s12: judging whether the remaining call time of the first channel machine and the second channel machine is greater than threshold time or not;
if yes, the step S2 is executed.
Preferably, in the channel migration method of the digital trunking system of the present invention, the remaining call time of the first channel unit and the second channel unit is obtained by a time timer.
Preferably, the method for migrating a digital trunking system channel according to the present invention further includes, before the service migration, the steps of:
s21: judging whether the service channels of the first channel machine and the second channel machine have migrated services or not;
s22: if yes, the channel machine which has migrated the service migrates the service according to the direction opposite to the original migration direction.
Preferably, before the step S1, the channel migration method of the digital trunking system further includes:
s0: and a resource manager of the base station control unit records the channel resource use conditions of the first channel machine and the second channel machine.
Preferably, in the method for migrating channels in a digital trunking system according to the present invention, the step S0 includes:
when one of the first channel machine or the second channel machine is released, signaling is sent to the base station control unit, and the resource manager records the change condition of the traffic channel.
Preferably, in the method for migrating channels in a digital trunking system according to the present invention, the step S2 further includes:
if the resource manager detects that the channel use conditions of the first channel machine and the second channel machine reach a channel migration condition, the resource manager sends the name and the migration direction of a service channel to a call control module;
and the call control module sends a switching signaling to the first channel machine and the second channel machine to complete channel switching.
Preferably, in the method for migrating a digital trunking system channel of the present invention, after the call control module sends the switching signaling to the first channel machine and the second channel machine, the switching signaling is sent to the communication terminal, and the communication terminal switches the service channel according to the switching signaling.
In addition, the invention also constructs a channel migration device of digital trunking system, which comprises a memory and a processor, wherein,
the memory to store program instructions;
the processor is configured to perform the following steps according to program instructions stored in the memory:
a resource manager of a base station control unit records the channel resource use conditions of a first channel machine and a second channel machine;
detecting that a first channel machine has idle service channels, and simultaneously detecting that the number of the service channels in the working state in a second channel machine is less than or equal to the number of the idle service channels;
and migrating the service of the second channel machine to an idle service channel of the first channel machine, wherein the second channel machine enters a dormant state.
Preferably, the digital trunking system channel migration apparatus of the present invention, the processor, according to the program instructions stored in the memory, is further configured to perform the following steps:
the first channel machine and the second channel machine respectively comprise two service channels, one of the service channels of the first channel machine is detected to be in a working state, and the other one of the service channels of the second channel machine is detected to be in a working state.
Preferably, the digital trunking system channel migration apparatus of the present invention, the processor, according to the program instructions stored in the memory, is further configured to perform the following steps:
before performing the migration of the traffic of the second channel machine to the idle traffic channel of the first channel machine, the method further includes:
judging whether the remaining call time of the first channel machine and the second channel machine is greater than threshold time or not;
if yes, the service of the second channel machine is transferred to an idle service channel of the first channel machine, and the second channel machine enters a dormant state.
The method and the device for migrating the channels of the digital trunking system have the following beneficial effects that: the method comprises the following steps: detecting that one of the service channels of the first channel machine is in a working state, and simultaneously detecting that one of the service channels of the second channel machine is in a working state; transferring the call service of the first channel machine to an idle service channel of the second channel machine, and then enabling the first channel machine to enter a dormant state; or transferring the call service of the second channel machine to an idle service channel of the first channel machine, and then enabling the second channel machine to enter a dormant state. By implementing the invention, in the conversation process, the power consumption of the channel machine is reduced by using the migration of the service channel, thereby reducing the power consumption of the cluster system.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a flow chart illustrating a channel migration method of a digital trunking system according to the present invention;
FIG. 2 is a flowchart illustrating a first embodiment of a channel migration method of a digital trunking system according to the invention;
fig. 3 is a flowchart illustrating a second embodiment of a channel migration method for a digital trunking system according to the present invention.
Detailed Description
For a more clear understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
Fig. 1 is a flow chart illustrating a channel migration method of a digital trunking system according to the present invention.
Specifically, the invention constructs a channel migration method of a digital cluster system, which comprises the following steps:
s1: and detecting that the first channel machine has idle traffic channels, and simultaneously detecting that the number of the traffic channels in the working state in the second channel machine is less than or equal to the number of the idle traffic channels. The first and second channelizers each include a plurality of traffic channels. It is to be understood that the first channel machine and the second channel machine are not limited to the order, but only to a reference relationship.
S2: and migrating the service of the second channel machine to an idle service channel of the first channel machine, and enabling the second channel machine to enter a dormant state.
Fig. 2 is a flowchart illustrating a channel migration method of a digital trunking system according to a first embodiment of the present invention.
Specifically, in the present invention, the first channel machine and the second channel machine respectively include two traffic channels. The channel of the system adopts time division multiplexing, the public digital trunking system is provided with a plurality of channel machines, each channel machine comprises two time slots, each time slot is a service channel, and the service channels are used for bearing conversation services. Aiming at all channel machines in a public digital trunking system, the service channel migration method selects any two channel machines for carrying out method description to explain the working principle, namely a first channel machine and a second channel machine, wherein the first channel machine and the second channel machine both comprise two service channels. Dividing the service channel into a service channel and an idle service channel according to whether the channel is occupied: recording the occupied service channel as a service channel, including a call service; the unoccupied traffic channel is recorded as an idle traffic channel and does not contain the call service. The method comprises the following steps:
step S11: and detecting that one of the traffic channels of the first channel machine is in the working state, and simultaneously detecting that one of the traffic channels of the second channel machine is in the working state.
Specifically, the first channel machine and the second channel machine herein refer to any two channel machines in the system, and are not specifically referred to. When the system detects that one of the channel machines is used for bearing the call service, namely one of the service channels is in a working state, the channel is recorded, and the detection of other channel machines of the system is continued. When it is detected that one of the traffic channels of another channelizer in the system is used for carrying the call service, i.e. one of the traffic channels is in an operating state, step S2 is executed.
It can be understood that there are two situations in which a traffic channel of a channelizer is in operation:
in the first case: the original two traffic channels of the channel machine are both used for carrying conversation services, i.e. the channel machine has two traffic channels. When the conversation of one of the service channels is finished, after the channel is released, one of the conversation services of the channel machine is in a working state.
In the second case: the two traffic channels of the channel machine are both in an idle state and do not carry call traffic, i.e. the channel machine has two idle traffic channels. When one of the idle traffic channels starts to carry the call traffic, one of the call traffic of the channel machine is in a working state.
Step S2: and migrating the service of the second channel machine to an idle service channel of the first channel machine, and enabling the second channel machine to enter a dormant state.
Specifically, a call service of a first channel machine is transferred to an idle service channel of a second channel machine, and then the first channel machine enters a dormant state; or transferring the call service of the second channel machine to the idle service channel of the first channel machine, and then enabling the second channel machine to enter a dormant state. And after determining that one of the two channel machines in the system is in a working state, migrating the service channel according to a preset channel migration algorithm, and after migrating the service channel, entering a dormant state by the channel machine without the service channel. The pre-provisioned channel migration algorithm includes, but is not limited to: according to the priority of the channel machine, according to the time of entering a single service channel, according to the residual talk time of the service channel, the size of the channel power, the migration record and the like.
It will be appreciated that there are at least two channel machines in the system and the system will detect the channel usage of all the channel machines and record the channel usage. When detecting that one of the service channels of any two channel machines is occupied, the method is used for carrying out the migration of the service channels, so that the two occupied service channels are concentrated on one channel machine, and the other channel machine enters a dormant state.
The first channel machine entering the sleep state comprises: after detecting that a service channel of a first channel machine is not occupied, a base station control unit sends a signaling to enable the first channel machine to enter a dormant state; the second channel machine entering the sleep state comprises: and after detecting that the service channel of the second channel machine is not occupied, the base station control unit sends a signaling to enable the second channel machine to enter a dormant state.
After the channel machine enters the dormant state, the power consumption of the system can be reduced.
Fig. 2 is a flowchart illustrating a channel migration method of a digital trunking system according to a first embodiment of the present invention.
Specifically, in the present invention, the public digital trunking system includes a plurality of channel machines, and the service channel migration method provided by the present invention is directed to all the channel machines in the public digital trunking system, which is not specifically referred to, but for explaining the working principle, any two channel machines are selected to perform the method statement, that is, the first channel machine and the second channel machine. The channels of the system adopt time division multiplexing, each channel machine comprises two time slots, and each time slot is a service channel. The first channel machine and the second channel machine comprise two service channels, and the service channels are divided into service channels and idle service channels according to whether the channels are occupied: recording the occupied service channel as a service channel, including a call service; the unoccupied traffic channel is recorded as an idle traffic channel and does not contain the call service.
Specifically, the method comprises the following steps:
the public digital trunking system comprises a base station control unit for recording the channel resource use condition of the channel machine, and a resource manager of the base station control unit records the channel resource use condition of the first channel machine and the second channel machine. When one of the two service channels of the first channel machine or the second channel machine is released, signaling is sent to the base station control unit, and the resource manager records the change condition of the service channel. Therefore, before step S1, the method further includes: the resource manager of the base station control unit records the channel resource use conditions of the first channel machine and the second channel machine.
Step S11: and detecting that one of the traffic channels of the first channel machine is in the working state, and simultaneously detecting that one of the traffic channels of the second channel machine is in the working state.
S12: and judging whether the remaining call time of the first channel machine and the second channel machine is greater than threshold time. Preferably, the remaining talk time of the first channel machine and the second channel machine is obtained by a time timer. Preferably, the remaining talk time is preset by the system.
If the remaining talk time of the first channel unit and the second channel unit is greater than the threshold time, step S2 is executed.
Step S2: and migrating the service of the second channel machine to an idle service channel of the first channel machine, and enabling the second channel machine to enter a dormant state.
Specifically, a call service of a first channel machine is transferred to an idle service channel of a second channel machine, and then the first channel machine enters a dormant state; or transferring the call service of the second channel machine to the idle service channel of the first channel machine, and then enabling the second channel machine to enter a dormant state.
The process of implementing the migration of the service channel is as follows:
if the resource manager detects that the channel use conditions of the first channel machine and the second channel machine reach a channel migration condition, the service channel name and the migration direction are sent to the call control module;
and the call control module sends a switching signaling to the first channel machine and the second channel machine to complete channel switching.
After the call control module sends a switching signaling to the first channel machine and the second channel machine, the switching signaling is sent to the communication terminal, and the communication terminal switches a service channel according to the switching signaling. Preferably, the communication terminal is a mobile station.
It will be appreciated that there are multiple channel machines in the system and the system will detect the channel usage of all the channel machines and record the channel usage. When detecting that one of the service channels of any two channel machines is occupied, the method is used for carrying out the migration of the service channels, so that the two occupied service channels are concentrated on one channel machine, and the other channel machine enters a dormant state.
The first channel machine entering the sleep state comprises: after detecting that a service channel of a first channel machine is not occupied, a base station control unit sends a signaling to enable the first channel machine to enter a dormant state; the second channel machine entering the sleep state comprises: and after detecting that the service channel of the second channel machine is not occupied, the base station control unit sends a signaling to enable the second channel machine to enter a dormant state.
After the channel machine enters the dormant state, the power consumption of the system can be reduced.
Fig. 3 is a flowchart illustrating a second embodiment of a channel migration method for a digital trunking system according to the present invention.
Specifically, in the present invention, the public digital trunking system includes a plurality of channel machines, and the service channel migration method provided by the present invention is directed to all the channel machines in the public digital trunking system, which is not specifically referred to, but for explaining the working principle, any two channel machines are selected to perform the method statement, that is, the first channel machine and the second channel machine. The channels of the system adopt time division multiplexing, each channel machine comprises two time slots, and each time slot is a service channel. The first channel machine and the second channel machine comprise two service channels, and the service channels are divided into service channels and idle service channels according to whether the channels are occupied: recording the occupied service channel as a service channel, including a call service; the unoccupied traffic channel is recorded as an idle traffic channel and does not contain the call service.
Specifically, the method comprises the following steps:
the public digital trunking system comprises a base station control unit for recording the channel resource use condition of the channel machine, and a resource manager of the base station control unit records the channel resource use condition of the first channel machine and the second channel machine. When one of the two service channels of the first channel machine or the second channel machine is released, signaling is sent to the base station control unit, and the resource manager records the change condition of the service channel.
Step S11: and detecting that one of the traffic channels of the first channel machine is in the working state, and simultaneously detecting that one of the traffic channels of the second channel machine is in the working state.
And judging whether the remaining call time of the first channel machine and the second channel machine is greater than threshold time. Preferably, the remaining talk time of the first channel machine and the second channel machine is obtained by a time timer.
If the remaining talk time of the first channel unit and the second channel unit is greater than the threshold time, step S2 is executed. Step S2 includes:
s21: judging whether the service channels of the first channel machine and the second channel machine have migrated the service or not;
s22: if the service channel of the first channel machine or the second channel machine has migrated, the channel machine that has migrated the service migrates the service channel in the direction opposite to the original migration direction, that is, the first channel machine or the second channel machine migrates the service channel in the direction opposite to the original migration direction.
Specifically, the process of implementing migration of the service channel is as follows:
if the resource manager detects that the channel use conditions of the first channel machine and the second channel machine reach a channel migration condition, the service channel name and the migration direction are sent to the call control module;
and the call control module sends a switching signaling to the first channel machine and the second channel machine to complete channel switching.
After the call control module sends a switching signaling to the first channel machine and the second channel machine, the switching signaling is sent to the communication terminal, and the communication terminal switches a service channel according to the switching signaling.
It will be appreciated that there are multiple channel machines in the system and the system will detect the channel usage of all the channel machines and record the channel usage. When detecting that one of the service channels of any two channel machines is occupied, the method is used for carrying out the migration of the service channels, so that the two occupied service channels are concentrated on one channel machine, and the other channel machine enters a dormant state.
The first channel machine entering the sleep state comprises: after detecting that a service channel of a first channel machine is not occupied, a base station control unit sends a signaling to enable the first channel machine to enter a dormant state; the second channel machine entering the sleep state comprises: and after detecting that the service channel of the second channel machine is not occupied, the base station control unit sends a signaling to enable the second channel machine to enter a dormant state.
After the channel machine enters the dormant state, the power consumption of the system can be reduced.
For example, in terms of energy saving, during the use of the channel machine, the input power of the channel machine is about 2W when the channel machine is in a sleep state, and the input power of the channel machine is about 96W when the power is set to be 40W normally. After the technical scheme of the invention is adopted, two service channels of two channel machines are merged into one channel machine, so that one channel machine enters a dormant state, the calculation is carried out according to the switching power supply efficiency of 0.8, and 0.12-degree electricity can be saved after the channel machine is accumulated and operated for 1 hour.
In addition, the invention also constructs a channel migration device of digital trunking system, which comprises a memory and a processor, wherein,
a memory for storing program instructions;
a processor for performing the following steps according to program instructions stored in the memory:
a resource manager of a base station control unit records the channel resource use conditions of a first channel machine and a second channel machine;
detecting that the first channel machine has idle service channels, and simultaneously detecting that the number of the service channels in the working state in the second channel machine is less than or equal to the number of the idle service channels;
and migrating the service of the second channel machine to an idle service channel of the first channel machine, and enabling the second channel machine to enter a dormant state.
Preferably, the digital trunking system channel migration apparatus of the present invention, the processor, is further configured to execute the following steps according to the program instructions stored in the memory:
the first channel machine and the second channel machine respectively comprise two service channels, one of the service channels of the first channel machine is detected to be in a working state, and the other one of the service channels of the second channel machine is detected to be in a working state.
Preferably, the digital trunking system channel migration apparatus of the present invention, the processor, is further configured to execute the following steps according to the program instructions stored in the memory:
before performing the migration of the traffic of the second channel machine to the idle traffic channel of the first channel machine, the method further comprises the following steps:
judging whether the remaining call time of the first channel machine and the second channel machine is greater than threshold time or not;
if yes, the service of the second channel machine is transferred to the idle service channel of the first channel machine, and the second channel machine enters a dormant state.
By implementing the invention, in the conversation process, the power consumption of the channel machine is reduced by using the migration of the service channel, thereby reducing the power consumption of the cluster system.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and are intended to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the scope of the present invention. All equivalent changes and modifications made within the scope of the claims of the present invention should be covered by the claims of the present invention.
Claims (10)
1. A channel migration method for a digital trunking system is characterized by comprising the following steps:
s1: detecting that a first channel machine has idle traffic channels, and simultaneously detecting that the number of the traffic channels in a working state in a second channel machine is less than or equal to the number of the idle traffic channels, wherein the channels of the first channel machine and the second channel machine are time division multiplexing channels;
s2: migrating the service of the second channel machine to an idle service channel of the first channel machine, and enabling the second channel machine to enter a dormant state;
the first channel machine and the second channel machine respectively comprise two service channels; the step S1 includes: s11: and detecting that one of the traffic channels of the first channel machine is in a working state, and simultaneously detecting that one of the traffic channels of the second channel machine is in a working state.
2. The digital trunking system channel migration method of claim 1, further comprising, before performing step S2:
s12: judging whether the remaining call time of the first channel machine and the second channel machine is greater than threshold time or not;
if yes, the step S2 is executed.
3. The digital trunking system channel migration method of claim 2 wherein the remaining talk time of the first channel unit and the second channel unit is obtained by a time timer.
4. The digital trunking system channel migration method of claim 1, further comprising, before the service migration:
s21: judging whether the service channels of the first channel machine and the second channel machine have migrated services or not;
s22: if yes, the channel machine which has migrated the service migrates the service according to the direction opposite to the original migration direction.
5. The digital trunking system channel migration method of claim 1, wherein before step S1, further comprising:
s0: and a resource manager of the base station control unit records the channel resource use conditions of the first channel machine and the second channel machine.
6. The digital trunking system channel migration method of claim 5, wherein said step S0 comprises:
when one of the first channel machine or the second channel machine is released, signaling is sent to the base station control unit, and the resource manager records the change condition of the traffic channel.
7. The digital trunking system channel migration method of claim 6, wherein said step S2 further comprises:
if the resource manager detects that the channel use conditions of the first channel machine and the second channel machine reach a channel migration condition, the resource manager sends the name and the migration direction of a service channel to a call control module;
and the call control module sends a switching signaling to the first channel machine and the second channel machine to complete channel switching.
8. The method according to claim 7, wherein after the call control module sends a switching signaling to the first channel machine and the second channel machine, the switching signaling is sent to a communication terminal, and the communication terminal switches a service channel according to the switching signaling.
9. A channel migration device of digital trunking system is characterized in that it comprises a memory and a processor, wherein,
the memory to store program instructions;
the processor is configured to perform the following steps according to program instructions stored in the memory:
a resource manager of a base station control unit records the channel resource use conditions of a first channel machine and a second channel machine, wherein the channels of the first channel machine and the second channel machine are time division multiplexing channels;
detecting that a first channel machine has idle service channels, and simultaneously detecting that the number of the service channels in the working state in a second channel machine is less than or equal to the number of the idle service channels;
migrating the service of the second channel machine to an idle service channel of the first channel machine, and enabling the second channel machine to enter a dormant state;
the processor is further configured to perform the following steps in accordance with program instructions stored in the memory: the first channel machine and the second channel machine respectively comprise two service channels, one of the service channels of the first channel machine is detected to be in a working state, and the other one of the service channels of the second channel machine is detected to be in a working state.
10. The digital trunking system channel migration apparatus of claim 9 wherein the processor is further configured to perform the following steps according to the program instructions stored in the memory:
before performing the migration of the traffic of the second channel machine to the idle traffic channel of the first channel machine, the method further includes:
judging whether the remaining call time of the first channel machine and the second channel machine is greater than threshold time or not;
if yes, the service of the second channel machine is transferred to an idle service channel of the first channel machine, and the second channel machine enters a dormant state.
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| CN102469482A (en) * | 2010-11-12 | 2012-05-23 | 中兴通讯股份有限公司 | Information switching method and system for broadcast control channel (BCCH) |
| CN103200655A (en) * | 2012-01-06 | 2013-07-10 | 中兴通讯股份有限公司 | Method and device for energy conservation of remote radio frequency system |
| CN103298026A (en) * | 2012-02-22 | 2013-09-11 | 中兴通讯股份有限公司 | Method and device for allocating standalone dedicated control information channel in dynamic mode |
| CN103067955A (en) * | 2013-01-22 | 2013-04-24 | 哈尔滨海能达科技有限公司 | Method and device for base station multi-channel receiver system failure detection |
| CN103796322A (en) * | 2014-02-28 | 2014-05-14 | 哈尔滨海能达科技有限公司 | Trunked communication system adopting time division multiple access, device and channel allocation method |
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