CN103826275A - Method for automatically switching communication channel - Google Patents
Method for automatically switching communication channel Download PDFInfo
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- CN103826275A CN103826275A CN201410095295.5A CN201410095295A CN103826275A CN 103826275 A CN103826275 A CN 103826275A CN 201410095295 A CN201410095295 A CN 201410095295A CN 103826275 A CN103826275 A CN 103826275A
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Abstract
The invention discloses a method for automatically switching a communication channel, aiming at solving the problems that the transmission efficiency of the existing emergency rescue command system in the single communication channel is seriously limited by the working state of the communication channel, and a worker can not easily select the optimal communication channel mode from multiple communication channels. The method comprises the following steps of firstly evaluating the transmission quality of the plurality of available communication channels to generate an evaluation result; determining the optimal communication channel according to the evaluation result; if information data need to be received and transmitted, automatically switching the optimal communication channel by a working channel; and giving the network parameters of the working channel to computers of the receiving part and the transmitting part to establish the communication link between the information receiving part and the information transmitting part. A cache device is also added into the method, and is used for carrying out breakpoint recording on the information data when a network is temporarily disconnected and carrying out breakpoint resume on the information data when the network is connected again; and after the transceiving process is finished once, the information data of the this time in the cache device are deleted.
Description
Technical field
The invention belongs to Wi-Fi communication technical field, specifically, is a kind of method that communication channel for strategy command system automatically switches.
Background technology
Strategy command system, is mainly in order to reduce the harm of Disaster Event to people's life and health, improves strategy ability.System, take strategy information support as main, is done system with strategy mechanism and government emergency and is coordinated, and can launch medical rescue work for burst accident to greatest extent, ensures better people's life security.
In the command system in the fields such as existing strategy, because considering versatility and the economy of command system, most of command system mainly adopts the 3G Internet network of current global general-use and GSM/CDMA/GPRS as communication pattern, and seldom a part is adopting the multiple channel communication pattern that configures marine satellite and big-dipper satellite on above-mentioned all purpose communication pattern basis.Even if configured multiple channel communication pattern, staff is also difficult to select in time optimum channel communication pattern to complete the transmitting-receiving task of information data in strategy.
Mainly there is following defect in communication pattern of the prior art:
1, under common-mode, rely on wireless Internet net transmission information, but transmission link redundancy is poor, be subject to the impact of operator's station layout restriction and geographical environment larger, when motion carrier is too fast, there is serious Doppler frequency shift, even if use 4G technology can promote some information transfer rates, can not automatic decision telecommunications when use, movement and which operator's platform transmission usefulness of UNICOM the highest.
2, general 3GInternet network communication link can not automatically switch on three of telecommunications, movement and UNICOM operator's platform, and be in most cases to switch manually according to the signal power (beacon size) of present position, be difficult to guarantee the high efficiency of transmission of emergency management and rescue information data in link.
3, also many employing artificial judgment and manual switchover of multiple channel communication pattern, at a time the communication link of receiving-transmitting sides can not be synchronous, communicating pair cannot be in multiple communication channel optimal selection transmission information communication link used, seriously restricted giving full play to of strategy Command & Decision System usefulness.
Summary of the invention
The present invention aims to provide a kind of method that communication channel automatically switches, to solve existing emergency management and rescue command system in single communication channel, efficiency of transmission is restricted by communication channel operating state seriously, and staff is difficult in multiple communication channel, select in time the problem of optimum channel communication pattern.
For realizing above-mentioned technical purpose, the technical solution used in the present invention is as follows:
The method that communication channel automatically switches, for network communication equipment, comprises the steps:
A, assess the transmission quality of available communication channel and communication channel every the set time, produce assessment result, described communication channel comprises at least one communication channel based on base station and at least one satellite-based communication channel;
B, determine optimal communication channel according to assessment result, wait for that communication channel switches;
C, automatically switch into after working channel at optimal communication channel, judge whether information sender starts transmission information data;
If D does not start, continue step C, if started, give receiving-transmitting sides computer by the network parameter of the working channel in step C, thereby set up the communication link of receiving-transmitting sides;
E, judge whether the information data of receiving-transmitting sides has received and dispatched, if do not complete, continue transmitting-receiving, if complete, after repeating step A and B, wait for the startup of the data of next time receiving and sending messages.
Because traditional communication pattern mainly relies on the communication channel based on base station, such as movement, UNICOM and telecommunications, this has limited the range of application of emergency management and rescue information systems to a certain extent, for emergency management and rescue information system, the present invention increased can with the communication channel of satellite communication after, greatly expanded emergency management and rescue information system optimal communication channel range of choice, improved emergent rescue capability.
Furthermore, the method for assessing the transmission quality of communication channel in described steps A comprises: to each communication channel transceiving data test pack, calculate transmission rate according to transmitting-receiving time and transceiving data amount every the set time.Above-mentioned operating state and the transmission rate that can judge simply exactly communication channel by sending the concrete grammar of data test bag (heartbeat packet) assessment traffic channel quality.
Furthermore, before described step C, determine the efficiency of transmission of each communication channel according to the size of described transmission rate, judge whether to exist a certain communication channel to be become working channel by manual switchover, if exist, stop in step C, optimal communication channel being automatically switched into the operation of working channel, and directly give receiving-transmitting sides computer by the network parameter of the communication channel of manual switchover.Above-mentioned restriction can allow user according to current communication channel conditions manual switchover communication channel, avoids the excessively problem such as switching of the high and communication channel of satellite communication cost
Furthermore, the information data in described step e, in transmitting-receiving process, also comprises the steps:
E1, deposit information data in buffer storage simultaneously;
E2, judge that whether the network of working channel disconnects temporarily, disconnect if occur, perform step E3, if do not disconnect, skip to step e 4 and carry out;
E3, record transmission breakpoint, and information data is continued to deposit in buffer storage, after working channel re-establishes, then the information data in buffer storage is carried out to breakpoint transmission;
E4, judge whether the transmitting-receiving task of information data completes, if complete, remove these data of receiving and sending messages that deposited in buffer storage.
By buffer storage being set to support the function of the transmitting-receiving of transmission information buffer memory, breakpoint transmission, avoid the loss of information data, prevent information data and constantly retransmit the situation of busy channel resource.
Furthermore, the network parameter in described step D at least comprises IP address, and receiving-transmitting sides calculates function using the IP address being endowed as fixed ip address.Two the sending out of transmitting-receiving that can fixed ip address can be guaranteed stable communication link.
Accompanying drawing explanation
Fig. 1 is the specific implementation flow chart of the method for the invention;
Fig. 2 is the flow chart that coordinates buffer storage in communication data transmitting-receiving process.
Embodiment
The present invention is mainly used in strategy command system, reduces the harm of Disaster Event to people's life and health by increasing multiple communication channel raising strategy ability.Except three kinds of different channels patterns that the operators such as traditional movement, UNICOM and telecommunications provide, the channelling mode based on satellite communication such as marine satellite, big-dipper satellite etc. is also provided, this makes the range of choice of optimal communication channel obtain expansion, the emergency rescue system efficient operation while being conducive to disaster occurs.
In order to make those skilled in the art, the present invention may be better understood, below in conjunction with drawings and Examples, technical solution of the present invention further illustrated.
As shown in Figure 1, a kind of method that communication channel automatically switches, comprises the steps:
1, assess the transmission quality of available communication channel and communication channel every the set time, produce assessment result.A kind of fairly simple appraisal procedure is to each communication channel transceiving data test pack (heartbeat packet) every the set time (such as one minute), calculate the transmission rate of each communication channel according to transmitting-receiving time and transceiving data amount, the size of transmission rate determines the efficiency of transmission of communication channel, this state can show by display unit, and user can tell the transmission usefulness of current each communication channel very intuitively.
2, determine current optimal communication channel according to the transmission rate calculating in step 1 (being assessment result), wait for communication channel switching.
3, in step 2, optimal communication channel automatically switches into after working channel, judges whether information sender starts transmission information data, that is to say in the time that information sender will communicate with receiving party, also with regard to the corresponding transmitting-receiving process that has started information data.
If 4 do not have the transmitting-receiving of information data, whether monitor subsequent has the data of need to receiving and sending messages at any time; If transmit leg is wanted the transmitting-receiving of log-on message data, first before will judging, whether exist a certain communication channel to be manually switched to the operation of working channel, if there is no manual switchover, just by the network parameter of working channel in step 3 (such as information such as IP address, gateway, subnet masks) assignment to transmit leg computer, thereby set up the communication link of receiving-transmitting sides.Under normal circumstances, system is in Auto-Sensing state, only can use at clear and definite 3G Internet, and can there is manual switchover when reducing satellite communication use cost, now do not need optimal communication channel to automatically switch into the operation of working channel, but directly automatically give receiving-transmitting sides computer by the network parameter of the working channel after manual switchover, set up equally the communication link of receiving-transmitting sides.
Whether the information data that 5, judges receiving-transmitting sides has received and dispatched, if do not complete, continues transmitting-receiving, if complete, and repeating step 1 and the 2 rear waits startup of data of next time receiving and sending messages.
As shown in Figure 2, information data, in transmitting-receiving process, also comprises the steps:
51,, in the process that information data sends, be stored into buffer storage on one side on one side;
52, judge the whether temporarily disconnection of network of work at present channel, disconnect if occur, perform step 53, if do not disconnect, skip to step 54 and carry out;
53, by MCU intelligence record transmission breakpoint, and information data is continued to deposit in buffer storage, after working channel re-establishes, then the information data in buffer storage is carried out to breakpoint transmission;
Whether the transmitting-receiving task that 54, judges information data completes, if complete, removes this information data having deposited in buffer storage, if do not complete, until this transmitting-receiving task is just removed the information data in buffer storage after completing.
Need to carry out manual switchover is to consider the situation higher such as the cost of the satellite communication such as marine satellite, big-dipper satellite, and it is obviously cheap to compare mutually cost by the cost of base station communication, therefore when the signal of arbitrary operator of UNICOM, movement or telecommunications is enough to support communication device works, just there is no need using satellite-based communication channel as working channel, UNICOM for another example, optimal communication channel in mobile and telecommunications may frequent variations in the area having, if communication channel adopts the mode automatically switching after the data of receiving and sending messages start, can cause communication channel excessively to be switched, signal of communication is unstable, if or terminal equipment is with rate hook, Sorry, your ticket has not enough value or the problem of arrearage also to need to consider the rate card of a certain operator, this situation also likely causes the interruption of communication process, therefore operator can need to be manually switched to some communication channels in conjunction with current according to each shown communication channel signal efficiency of transmission of display unit in step 1, to guarantee the timely transmission of emergency management and rescue information data.
The method above a kind of communication channel provided by the invention being automatically switched is described in detail.The explanation of specific embodiment is just for helping to understand method of the present invention and core concept thereof.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection range of the claims in the present invention.
Claims (5)
1. the method that communication channel automatically switches, for network communication equipment, is characterized in that, comprises the steps:
A, assess the transmission quality of available communication channel and communication channel every the set time, produce assessment result, described communication channel comprises at least one communication channel based on base station and at least one satellite-based communication channel;
B, determine optimal communication channel according to assessment result, wait for that communication channel switches;
C, automatically switch into after working channel at optimal communication channel, judge whether information sender starts transmission information data;
If D does not start, continue step C, if started, give receiving-transmitting sides computer by the network parameter of the working channel in step C, thereby set up the communication link of receiving-transmitting sides;
E, judge whether the information data of receiving-transmitting sides has received and dispatched, if do not complete, continue transmitting-receiving, if complete, after repeating step A and B, wait for the startup of the data of next time receiving and sending messages.
2. method according to claim 1, is characterized in that, the method for assessing the transmission quality of communication channel in described steps A comprises: to each communication channel transceiving data test pack, calculate transmission rate according to transmitting-receiving time and transceiving data amount every the set time.
3. method according to claim 2, it is characterized in that, before described step C, determine the efficiency of transmission of each communication channel according to the size of described transmission rate, judge whether to exist a certain communication channel to be become working channel by manual switchover, if exist, stop in step C, optimal communication channel being automatically switched into the operation of working channel, and directly give receiving-transmitting sides computer by the network parameter of the communication channel of manual switchover.
4. method according to claim 1, is characterized in that, the information data in described step e, in transmitting-receiving process, also comprises the steps:
E1, deposit information data in buffer storage simultaneously;
E2, judge that whether the network of working channel disconnects temporarily, disconnect if occur, perform step E3, if do not disconnect, skip to step e 4 and carry out;
E3, record transmission breakpoint, and information data is continued to deposit in buffer storage, after working channel re-establishes, then the information data in buffer storage is carried out to breakpoint transmission;
E4, judge whether the transmitting-receiving task of information data completes, if complete, remove these data of receiving and sending messages that deposited in buffer storage.
5. method according to claim 1, is characterized in that, the network parameter in described step D at least comprises IP address, and receiving-transmitting sides calculates function using the IP address being endowed as fixed ip address.
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| CN201410095295.5A CN103826275B (en) | 2014-03-14 | 2014-03-14 | The method that communication channel automatically switches |
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| CN104967692A (en) * | 2015-07-09 | 2015-10-07 | 焦点科技股份有限公司 | Host mapping automatic switching method and system |
| CN105871448A (en) * | 2016-03-30 | 2016-08-17 | 中科凯普（天津）卫星导航通信技术有限公司 | High-dynamic transformation method of broadband special network of high-speed rail |
| CN107947879A (en) * | 2017-11-23 | 2018-04-20 | 中国船舶重工集团公司第七〇九研究所 | Ship communication channel switching device, system and its application method |
| CN109743135A (en) * | 2018-12-29 | 2019-05-10 | 中国大唐集团新能源科学技术研究院有限公司 | A kind of method of breakpoint transmission file transmission |
| CN110012026A (en) * | 2019-04-18 | 2019-07-12 | 大连海事大学 | Unmanned ships and light boats intelligent gateway and data transmission method based on mixed cipher |
| CN113260009A (en) * | 2021-04-25 | 2021-08-13 | 昆明乐子科技有限公司 | Method for switching a communication connection to another channel (handover) |
| CN115379598A (en) * | 2022-08-25 | 2022-11-22 | 广东电网有限责任公司 | Multi-mode communication system |
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| CN104967692A (en) * | 2015-07-09 | 2015-10-07 | 焦点科技股份有限公司 | Host mapping automatic switching method and system |
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| CN109743135A (en) * | 2018-12-29 | 2019-05-10 | 中国大唐集团新能源科学技术研究院有限公司 | A kind of method of breakpoint transmission file transmission |
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| CN113260009A (en) * | 2021-04-25 | 2021-08-13 | 昆明乐子科技有限公司 | Method for switching a communication connection to another channel (handover) |
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| CN115379598B (en) * | 2022-08-25 | 2024-02-27 | 广东电网有限责任公司 | Multi-mode communication system |
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