CN102256013B - Mobile terminal and communication method thereof applied to nuclear power plant - Google Patents
Mobile terminal and communication method thereof applied to nuclear power plant Download PDFInfo
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- CN102256013B CN102256013B CN201110188200.0A CN201110188200A CN102256013B CN 102256013 B CN102256013 B CN 102256013B CN 201110188200 A CN201110188200 A CN 201110188200A CN 102256013 B CN102256013 B CN 102256013B
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Abstract
The embodiment of the invention discloses a mobile terminal and a communication method thereof applied to a nuclear power plant. The method comprises that: the mobile terminal searches for a pilot signal and compares the acquired pilot signal with a special pilot signal stored by the mobile terminal, wherein the special pilot signal is the pilot signal transmitted by a special base station of which signal coverage comprises a part of or all the nuclear power plant; and if the pilot signal acquired by the mobile terminal is the special pilot signal, the mobile terminal enters a static state, regulates own transmission power to be 0, receives a signal from the special base station, and does not transmit any signal. The mobile terminal applied to the nuclear power plant can be used in the nuclear power plant as the substitute of a pager, overcomes the shortcomings of the pager, and has high communication security due to the adoption of relatively more security policies.
Description
Technical field
The present invention relates to a kind of field of mobile communication, relate in particular to a kind of mobile terminal and means of communication thereof that are applicable to nuclear power station plant area.
Background technology
Electromagnetic interference refers to the interference to sensitive equipment by electromagnet source spatial.Equipment safety in operation is required to high place nuclear power station is this, especially need to avoid sensitive equipment to be subject to electromagnetic interference.In French FESSENHEIM power station, TIHANGE power station and GRAVELVVES power station, Zeng Yin is used wireless mobile transmitter and receiver to cause several scram events in Power Plant.Its reason is: when wireless mobile transmitter is directly adjacent to control electronics (as equipment such as transmitter, adjuster, microprocessor, rectifier, inverters) or its control cables; because the shielding protection of equipment or cable exists some defect, the strong electric field that transmitting antenna produces has produced impact to these equipment or cable and has caused the generation of event.
Rule of thumb, the required distance between position when mobile terminal (mobile phone) is used and its responsive electric meter control appliance around can be avoided the electromagnetic interference of mobile terminal to nuclear power station sensitive equipment more than remaining on 1 m substantially.But due to distance and other ignorance factors that cannot effectively control in actual use between mobile terminal and sensing instrument control appliance, so ban use of mobile terminal in the industrial premises of common way Shi plant area scope.
But due to the existence of human factor, staff may not have turning-off mobile terminal due to carelessness, brought hidden danger to the production safety of nuclear power station; Or the in the situation that of turning-off mobile terminal, cannot receive external information, and at some in particular cases, staff needs again externally reception information to finish the work, and has brought an implacable contradiction thereupon.
For addressing the above problem, researcher has expected substituting mobile terminal with beep-pager.Although the power of beep-pager very I is ignored, use beep-pager sensing instrument control appliance not to be caused to interference, use unrestricted.But there is shortcomings in it:
An obvious shortcoming of beep-pager is to lack safe secret protection.Anyone can tackle at an easy rate paging information in spread scope.Especially, the environment of like this confidentiality being had relatively high expectations at nuclear power station, is used beeper inadvertently confidential information to be revealed.Meanwhile, beep-pager is only a simple personal mobile communication equipment, and the size of message of transmission very little, also cannot be realized the storage of information.
Still more, in present most of occasions, do not used beep-pager, the manufacturer of international and domestic upper production, maintenance beep-pager is also very few, makes for buying and the regular maintenance cycle of beep-pager long, costly.
Summary of the invention
Embodiment of the present invention technical problem to be solved is, a kind of mobile terminal and means of communication thereof that are applicable to nuclear power station plant area are provided, can be used as the substitute of beep-pager, in nuclear power station plant area, use, it has overcome the above-mentioned shortcoming of beep-pager, mobile terminal is owing to adopting more security strategy, and the fail safe of communication is very high.Meanwhile, now the internal memory of mobile terminal self is larger, and the capacity of storage information strengthens greatly, and mobile terminal correlation technique upgrade fast, buying and maintenance period is short, expense is low.
In order to solve the problems of the technologies described above, the embodiment of the present invention provides a kind of mobile terminal communication method that is applicable to nuclear power station plant area, comprising:
Mobile terminal carries out the search of pilot signal, and by the Special Pilot-aided signal fusing of the pilot signal of obtaining and described mobile terminal stores; Described Special Pilot-aided signal is the pilot signal that particular base station sends; Described particular base station is the base station that signal cover comprises the part or all of plant area of nuclear power station;
If the pilot signal of described acquisition for mobile terminal is Special Pilot-aided signal, described mobile terminal enters static condition, and the transmitting power of self is adjusted into 0, receives the signal from described particular base station, but any signal of outgoing not.
Wherein, described mobile terminal carries out the search of pilot signal, and by after the Special Pilot-aided signal fusing of the pilot signal of obtaining and described mobile terminal stores, also comprises:
If the pilot signal of described acquisition for mobile terminal is non-Special Pilot-aided signal, described mobile terminal is set up conventional communication link with the base station that sends described pilot signal, by up-downgoing channel, carries out data interaction.
Wherein, described mobile terminal carries out the search of pilot signal, and by the Special Pilot-aided signal fusing of the pilot signal of obtaining and described mobile terminal stores, also comprises:
If described mobile terminal does not search any pilot signal, described mobile terminal enters deadlock state, and the transmitting power of self and received power are all adjusted into 0;
Described mobile terminal, at deadlock state described in preset time interval backed off after random, re-starts the search of pilot signal.
Wherein, described mobile terminal also comprises before carrying out the search of pilot signal: the Special Pilot-aided signal of preset all particular base station in described mobile terminal.
Wherein, if the pilot signal of described acquisition for mobile terminal is Special Pilot-aided signal, described mobile terminal enters static condition, comprising:
As long as described mobile terminal determines that the pilot signal obtain is Special Pilot-aided signal, the power of described Special Pilot-aided signal no matter, described mobile terminal all enters static condition.
Accordingly, the embodiment of the present invention also provides a kind of mobile terminal that is applicable to nuclear power station plant area, comprising:
Pilot signal processing module, for carrying out the search of pilot signal, and by the Special Pilot-aided signal fusing of the pilot signal of obtaining and described mobile terminal stores; Described Special Pilot-aided signal is the pilot signal that particular base station sends; Described particular base station is the base station that signal cover comprises the part or all of plant area of nuclear power station;
Plant environment communication module, for when described pilot signal processing module is judged its pilot signal of obtaining as Special Pilot-aided signal, control described mobile terminal and enter static condition, the transmitting power of mobile terminal is adjusted into 0, make it receive the signal from described particular base station, but any signal of outgoing not.
Wherein, described mobile terminal also comprises:
Conventional environment communication module, for when described pilot signal processing module is judged its pilot signal of obtaining as non-Special Pilot-aided signal, sets up conventional communication link with the base station that sends described pilot signal, by up-downgoing channel, carries out data interaction.
Wherein, described pilot signal processing module comprises:
Special Pilot-aided memory cell, for the Special Pilot-aided signal of preset all particular base station;
Pilot signal searches unit, for pilot signal is searched for, and obtains the pilot signal of its reception;
Pilot signal comparing unit, the Special Pilot-aided signal fusing of storing for pilot signal that described pilot signal searches unit is obtained and described Special Pilot-aided memory cell, judges whether the pilot signal that described pilot signal searches unit obtains is Special Pilot-aided signal.
Wherein, described mobile terminal also comprises:
Deadlock state control module, for when described pilot signal processing module does not search any pilot signal, controls described mobile terminal and enters deadlock state, and the transmitting power of mobile terminal and received power are all adjusted into 0.
Wherein, described deadlock state control module comprises:
Timing unit, enters the time threshold that needs to maintain this deadlock state after deadlock state for preset mobile terminal;
Deadlock control unit, for when described pilot signal processing module does not search any pilot signal, controls described mobile terminal and enters deadlock state, and the transmitting power of mobile terminal and received power are all adjusted into 0; And control described pilot signal processing module and stop the search to pilot signal;
Deadlock release unit, reaches for enter the time of deadlock state at described mobile terminal after the time threshold of described timing unit storage, controls mobile terminal and exits described deadlock state, activates the search that described pilot signal processing module re-starts pilot signal.
The mobile terminal that is applicable to nuclear power station plant area and the means of communication thereof that the embodiment of the present invention provides, can be used as in the substitute ， nuclear power station plant area of beep-pager and use, and its fail safe that has overcome beep-pager is low, the shortcoming that memory capacity is little.Meanwhile, because the mobile terminal that is applicable to nuclear power station plant area that the present embodiment provides and the means of communication thereof do not need existing mobile terminal and base station to change on hardware, so safeguard that week is convenient, it is low to realize cost.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is nuclear power station provided by the invention producing region schematic diagram;
Fig. 2 is mobile terminal communication method the first embodiment schematic flow sheet that is applicable to nuclear power station plant area provided by the invention;
Fig. 3 is mobile terminal communication method the second embodiment schematic flow sheet that is applicable to nuclear power station plant area provided by the invention;
Fig. 4 is mobile terminal the first example structure schematic diagram that is applicable to nuclear power station plant area provided by the invention;
Fig. 5 is mobile terminal the second example structure schematic diagram that is applicable to nuclear power station plant area provided by the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
It should be noted that, signal cover is comprised to the base station of the part or all of plant area of nuclear power station is defined as particular base station in various embodiments of the present invention, the pilot signal that particular base station sends is Special Pilot-aided signal.Particular base station herein and conventional base station do not have any different on software and hardware, and just the signal of particular base station has covered nuclear power station plant area, and the signal of conventional base station does not cover nuclear power station plant area, as shown in Figure 1.Special Pilot-aided signal herein and conventional base station pilot signals also without any different, the pilot signal that we just send in order to distinguish particular base station and conventional base station, and the pilot signal of particular base station transmission is called to Special Pilot-aided signal.
Referring to Fig. 2, be mobile terminal communication method the first embodiment schematic flow sheet that is applicable to nuclear power station plant area provided by the invention, as shown in Figure 2, the method flow process comprises:
At step S100, mobile terminal carries out the search of pilot signal.
At step S101, mobile terminal is by the Special Pilot-aided signal fusing of the pilot signal of obtaining and self storage;
If the pilot signal of described acquisition for mobile terminal is Special Pilot-aided signal, perform step S102; If the pilot signal of described acquisition for mobile terminal is non-Special Pilot-aided signal, perform step S103.
At step S102, mobile terminal enters static condition, and the transmitting power of self is adjusted into 0, receives the signal from described particular base station, but any signal of outgoing not.
At step S103, mobile terminal is set up conventional communication link with the base station that sends described pilot signal, by up-downgoing channel, carries out data interaction.
Implement the mobile terminal communication method that is applicable to nuclear power station plant area that the embodiment of the present invention provides, can substitute beep-pager with mobile terminal and use in nuclear power station plant area, and it is low to have overcome the fail safe of beep-pager, the shortcoming that memory capacity is little.Meanwhile, because the mobile terminal communication method that is applicable to nuclear power station plant area that the present embodiment provides does not need existing base station to change on hardware, so safeguard that week is convenient, it is low to realize cost.
Referring to Fig. 3, be mobile terminal communication method the second embodiment schematic flow sheet that is applicable to nuclear power station plant area provided by the invention, in the present embodiment, by the flow process of this mobile terminal communication method of more detailed description.In embodiments of the present invention, with mobile terminal access code division multiple access (CDMA, Code Division Multiple Access) network is that example describes, be intended to help the public better to understand the present invention, those skilled in the art are by reading the present embodiment, can be informed in other mobile network, as global system for mobile communications (GSM, global system for mobile communications), 3 G mobile communication network (3G, 3rd-generation), can utilize identical principle to reach identical technique effect, so can not limit protection scope of the present invention with this.
The mobile terminal communication method that the present embodiment provides is as shown in Figure 3:
At step S200, the Special Pilot-aided signal of preset all particular base station in described mobile terminal.More specifically, in general realize by distinguishing pilot signal mobile terminal identification base station.Forward pilot signal is the PN sequence of a non-modulated, and code length is 32768chip, and spreading rate is 1.2288Mchip/s.And real realization differentiation is to setover by pilot signal.
Under regular situation, with respect to mobile terminal, under a certain carrier frequency, the pilot signal of all different biasings is classified as following set:
Effective pilot signal collection: the pilot signal being associated with forward traffic channel of distributing to mobile terminal.
Candidate pilot collection: current not in effective pilot signal collection, but there is enough intensity, can be by the pilot signal of successful demodulation.
Adjacent pilot frequencies set of signals: due to insufficient strength, current not in effective pilot signal collection or candidate pilot collection, still may become the pilot signal of active set or Candidate Set.
Residue pilot signal collection: on current C DMA carrier frequency, the institute in current system is pilot signal collection likely, but is not included in adjacent pilot frequencies set of signals, the pilot signal in candidate pilot collection and effectively pilot signal collection.
In embodiments of the present invention, at this, add a Special Pilot-aided set of signals specially: distribute to the pilot signal of particular base station, this Special Pilot-aided set of signals writes mobile terminal in advance.
Accordingly, in embodiments of the present invention, residue pilot signal collection is modified to: on current C DMA carrier frequency, institute in current system is pilot signal collection likely, but is not included in the pilot signal in Special Pilot-aided set of signals, adjacent pilot frequencies set of signals, candidate pilot collection and effective pilot signal collection.
At step S201, mobile terminal carries out the search of pilot signal.More specifically, after mobile terminal-opening, can enter init state, in this state, mobile terminal constantly detects pilot signal and the synchronizing signal that send each base station around.
For conventional cdma network, mobile terminal init state is divided into again four sub-states: determine that the sub-state of system, pilot channel catch sub-state, the sub-state of synchronization channel acquisition and regularly change sub-state.
(1) determine the sub-state of system: after mobile terminal powers on, will produce the indication that powers on, carry out System self-test (as checked battery electric quantity), then the system of entering is determined sub-state and the corresponding system parameters that resets, and determines that according to arranging of mobile terminal the mode of operation of mobile terminal is cdma system or analogue system and working frequency points.The carrier frequency that mobile terminal was preserved from the last time or the Primary preserving in mobile terminal or secondary carrier frequency, select a frequency as the carrier frequency of access cdma system, this step can be called system selection course.After this process completes, mobile terminal enters the sub-state of pilot capture.
(2) the sub-state of pilot capture: catch in sub-state at pilot channel, mobile terminal to determined frequency before, is searched for its frequency tuning according to selected CDMA Channel.If pilot channel is at official hour T20m(15s) IT success, proceed to the sub-state of synchronization channel acquisition; Otherwise, if exceed this time, should produce and catch unsuccessfully indication, and turn back to definite sub-state of system.In this stage, the local correlator of the pilot searcher utilization of mobile terminal is searched for all PN biasings, finds out the biasing of Ec/Io maximum.If all biasings all, lower than can demodulation threshold, be thought and are caught unsuccessfully on this channel.
(3) the sub-state of synchronization channel acquisition: enter after this sub-state, mobile terminal is placed in the strongest PN biasing by the branch of RAKE receiver, message in demodulation synchronizing channel (because synchronizing channel is not passed through long code scrambler, therefore can the corresponding synchronizing channel of demodulation).If mobile terminal is not received an effective Sync Channel Message in T21m (1S), carry " catching unsuccessfully indication " retrieval system and determine sub-state.
(4) regularly change sub-state: in this state, mobile terminal mainly completes two work: the one, and utilize the long code state value (lc_state) extracting from Sync Channel Message that the long code generator of oneself is set, another is exactly that the system time of oneself is synchronizeed with extracted system time (sys_time).Because the message transmission of synchronizing channel is strictly alignd with timing, so just make mobile terminal the long code generator state of oneself can be alignd with the long code state of whole system.In addition, also may carry out the adjustment etc. of frequency.
Above-mentioned 4 sub-states be mobile terminal in cdma network, the conventional init state after start.In the present embodiment, the init state of mobile terminal and above-described conventional init state are distinguished to some extent, mobile terminal, after " the sub-state of pilot capture ", is not to return " determining the sub-state of system " or enter " the sub-state of synchronization channel acquisition ", but execution step S202.
At step S202, mobile terminal judges whether acquisition pilot signal in " the sub-state of pilot capture ", if do not catch any base station pilot signals, is not as conventional initialization flow process---return " determining the sub-state of system ", but execution step S203, mobile terminal enters deadlock state; If mobile terminal has been caught base station pilot signals, neither be as conventional initialization flow process---directly enter " the sub-state of synchronization channel acquisition ", but execution step S205 further compares to pilot signal.
At step S203, mobile terminal enters deadlock state, and the transmitting power of self and received power are all adjusted into 0.More specifically, when mobile terminal had not both captured the pilot signal of particular base station, while also not capturing the pilot signal of general base station, just enter this state.Adding this state, is to consider for following several situations: 1, in order to be different from the static condition that can mention below.2,, for security consideration, any pilot signal of mobile terminal does not all capture, may be stronger due to environment electromagnetics of living in shielding, and the very possible on-site in nuclear power station now, therefore can not allow it launch any signal; Certainly, it may be also due to mobile terminal self hardware problem that mobile terminal does not capture any pilot signal, but now mobile terminal is also likely in on-site, and the consideration in safety, therefore can not allow it transmit.
At step S204, mobile terminal, at deadlock state described in preset time interval backed off after random, re-starts the search of pilot signal.More specifically, user or mobile terminal manufacturer can be at mobile terminal the time preset (for example 15 seconds) at preset deadlock state, mobile terminal starts timing after entering deadlock state, when mobile terminal maintained deadlock state after 15 seconds, automatically exit deadlock state, return to step S201, re-start the search of pilot signal.
At step S205, mobile terminal is by the Special Pilot-aided signal fusing of the pilot signal of obtaining and self storage.If the pilot signal of obtaining is non-Special Pilot-aided signal, perform step S206; If the pilot signal of obtaining is Special Pilot-aided signal, to performing step S207.
At step S206, mobile terminal, according to conventional initialization procedure, enters " the sub-state of synchronization channel acquisition " and " regularly changing sub-state ", sets up conventional communication link with the base station that sends this pilot signal, by up-downgoing channel, carries out data interaction.
At step S207, mobile terminal enters static condition, and the transmitting power of self is adjusted into 0, receives the signal from described particular base station, but any signal of outgoing not.More specifically, when mobile terminal captures after the Special Pilot-aided signal from particular base station, just enter static condition.Now, mobile terminal is adjusted to 0W by self transmitting power, i.e. the no longer outside any signal of transmitting, but can accept the information from particular base station.
Further, for general mobile terminal, if the pilot signal strength of catching is very little,, in the threshold range arranging, can not be considered to not catch.But in embodiments of the present invention, for security consideration, the permit standard of static condition is more wide in range: as long as capture the pilot signal of particular base station, its intensity size no matter, all thinks acquisition success.Once acquisition success, mobile terminal enters static condition at once.
The embodiment of the present invention is to take the initial condition of mobile terminal-opening to describe as example, and at mobile terminal, under other states (as start in a conventional manner), mobile terminal also will carry out the search of pilot signal.The sub-state class of pilot capture that this search procedure coexists under open state seemingly.Mobile terminal is by ceaselessly adjusting the inner phase place of making the code sequence of coherent demodulation, and the signal received of demodulation, when mobile terminal internal code sequence is consistent with the phase place of received signal code sequence, obtains a pilot signal that power is stronger.Mobile terminal is just by this pilot signal biasing and comparing in Special Pilot-aided set of signals, if coupling, explanation captures the pilot signal of particular base station.Now, mobile terminal has just entered static condition, carries out pilot search through after a period of time again.If both there is no the pilot signal of searched out particular base station, do not search again the pilot signal of general base station, just mobile terminal enters deadlock state, through after a period of time, carry out equally again pilot search.
Implement the mobile terminal communication method that is applicable to nuclear power station plant area that the embodiment of the present invention provides, can substitute beep-pager with mobile terminal and use in nuclear power station plant area, and it is low to have overcome the fail safe of beep-pager, the shortcoming that memory capacity is little.This method makes the mobile terminal can normal use as conventional mobile terminal outside nuclear power station plant area, and after entering plant area, shutdown signal emission function, only receives signal automatically.Meanwhile, because the mobile terminal communication method that is applicable to nuclear power station plant area that the present embodiment provides does not need existing base station to change on hardware, so safeguard that week is convenient, it is low to realize cost.
Referring to Fig. 4, be mobile terminal the first example structure schematic diagram that is applicable to nuclear power station plant area provided by the invention, as shown in Figure 4, this mobile terminal comprises:
Pilot signal processing module 1, for carrying out the search of pilot signal, and by the Special Pilot-aided signal fusing of the pilot signal of obtaining and described mobile terminal stores; Described Special Pilot-aided signal is the pilot signal that particular base station sends; Described particular base station is the base station that signal cover comprises the part or all of plant area of nuclear power station.
Plant environment communication module 2, for when described pilot signal processing module 1 is judged its pilot signal of obtaining as Special Pilot-aided signal, control described mobile terminal and enter static condition, the transmitting power of mobile terminal is adjusted into 0, make it receive the signal from described particular base station, but any signal of outgoing not.
Implement the mobile terminal that is applicable to nuclear power station plant area that the embodiment of the present invention provides, can substitute beep-pager and use in nuclear power station plant area, and it is low to have overcome the fail safe of beep-pager, the shortcoming that memory capacity is little.Meanwhile, because the mobile terminal that is applicable to nuclear power station plant area that the present embodiment provides does not need existing base station to change on hardware, so safeguard that week is convenient, it is low to realize cost.
Referring to Fig. 5, be mobile terminal the second example structure schematic diagram that is applicable to nuclear power station plant area provided by the invention, in the present embodiment, by the more detailed structure of this mobile terminal of description and the function of each parts.As shown in Figure 5, this mobile terminal comprises: pilot signal processing module 1, plant environment communication module 2, conventional environment communication module 3, deadlock state control module 4.
Pilot signal processing module 1, for carrying out the search of pilot signal, and by the Special Pilot-aided signal fusing of the pilot signal of obtaining and described mobile terminal stores.More specifically, this pilot signal processing module 1 comprises:
Special Pilot-aided memory cell 11, for the Special Pilot-aided signal of preset all particular base station.More specifically, in general realize by distinguishing pilot signal mobile terminal identification base station.Forward pilot signal is the PN sequence of a non-modulated, and code length is 32768chip, and spreading rate is 1.2288Mchip/s.And real realization differentiation is to setover by pilot signal.
Under regular situation, with respect to mobile terminal, under a certain carrier frequency, the pilot signal of all different biasings is classified as following set:
Effective pilot signal collection: the pilot signal being associated with forward traffic channel of distributing to mobile terminal.
Candidate pilot collection: current not in effective pilot signal collection, but there is enough intensity, can be by the pilot signal of successful demodulation.
Adjacent pilot frequencies set of signals: due to insufficient strength, current not in effective pilot signal collection or candidate pilot collection, still may become the pilot signal of active set or Candidate Set.
Residue pilot signal collection: on current C DMA carrier frequency, the institute in current system is pilot signal collection likely, but is not included in adjacent pilot frequencies set of signals, the pilot signal in candidate pilot collection and effectively pilot signal collection.
In embodiments of the present invention, at this, add a Special Pilot-aided set of signals specially: distribute to the pilot signal of particular base station, this Special Pilot-aided set of signals writes Special Pilot-aided memory cell 11 in advance.
Accordingly, in embodiments of the present invention, residue pilot signal collection is modified to: on current C DMA carrier frequency, institute in current system is pilot signal collection likely, but is not included in the pilot signal in Special Pilot-aided set of signals, adjacent pilot frequencies set of signals, candidate pilot collection and effective pilot signal collection.
Pilot signal searches unit 12, for pilot signal is searched for, and obtains the pilot signal of its reception; More specifically, after mobile terminal-opening, can enter init state, in this state, pilot signal searches unit 12 constantly detects pilot signal and the synchronizing signal that send each base station around.
Pilot signal comparing unit 13, the Special Pilot-aided signal fusing of storing for pilot signal that described pilot signal searches unit is obtained and described Special Pilot-aided memory cell 11, judges whether the pilot signal that described pilot signal searches unit 12 obtains is Special Pilot-aided signal.
Plant environment communication module 2, for when described pilot signal processing module 1 is judged its pilot signal of obtaining as Special Pilot-aided signal, control described mobile terminal and enter static condition, the transmitting power of mobile terminal is adjusted into 0, make it receive the signal from described particular base station, but any signal of outgoing not, but can accept the information from particular base station.
Further, for general mobile terminal, if the pilot signal strength that pilot signal processing module 1 is caught is very little,, in the threshold range arranging, can not be considered to not catch.But in embodiments of the present invention, for security consideration, the permit standard of static condition is more wide in range: as long as pilot signal processing module 1 captures the pilot signal of particular base station, its intensity size no matter, all thinks acquisition success.Once acquisition success, plant environment communication module 2 is controlled at once mobile terminal and is entered static condition.
Conventional environment communication module 3, for when described pilot signal processing module 1 is judged its pilot signal of obtaining as non-Special Pilot-aided signal, sets up conventional communication link with the base station that sends described pilot signal, by up-downgoing channel, carries out data interaction.
In actual applications, pilot signal processing module 1 is except catching conventional pilot signal and Special Pilot-aided signal, also may there is the situation that any base station pilot signals does not all capture, this may be because mobile terminal environment electromagnetics shielding of living in is stronger, and the very possible on-site in nuclear power station now can not allow this mobile terminal launch any signal.Certainly, it may be also due to mobile terminal self hardware problem that pilot signal processing module 1 does not capture any pilot signal, but now mobile terminal is also likely in on-site, and the consideration in safety, therefore can not allow it transmit.
For this reason, the mobile terminal that the embodiment of the present invention provides is specially provided with deadlock state control module 4, for when described pilot signal processing module 1 does not search any pilot signal, control described mobile terminal and enter deadlock state, the transmitting power of mobile terminal and received power are all adjusted into 0.More specifically, deadlock state control module 4 comprises:
Timing unit 41, enters the time threshold that needs to maintain this deadlock state after deadlock state for preset mobile terminal; And after entering deadlock state, mobile terminal starts timing.
Deadlock control unit 42, for when described pilot signal processing module 1 does not search any pilot signal, controls described mobile terminal and enters deadlock state, and the transmitting power of mobile terminal and received power are all adjusted into 0; And control described pilot signal processing module and stop the search to pilot signal.
Deadlock release unit 43, for enter the time of deadlock state at described mobile terminal, reach after the time threshold of described timing unit 1 storage, control mobile terminal and exit described deadlock state, activate the search that described pilot signal processing module 1 re-starts pilot signal.
Implement the mobile terminal that is applicable to nuclear power station plant area that the embodiment of the present invention provides, can substitute beep-pager with mobile terminal and use in nuclear power station plant area, and it is low to have overcome the fail safe of beep-pager, the shortcoming that memory capacity is little.This mobile terminal can normal use as conventional mobile terminal outside nuclear power station plant area, and after entering plant area, shutdown signal emission function, only receives signal automatically.Meanwhile, because the mobile terminal communication method that is applicable to nuclear power station plant area that the present embodiment provides does not need existing base station to change on hardware, so safeguard that week is convenient, it is low to realize cost.
One of ordinary skill in the art will appreciate that all or part of flow process realizing in above-described embodiment method, to come the hardware that instruction is relevant to complete by computer program, described program can be stored in a computer read/write memory medium, this program, when carrying out, can comprise as the flow process of the embodiment of above-mentioned each side method.Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-Only Memory, ROM) or random store-memory body (Random Access Memory, RAM) etc.
Above disclosed is only a kind of preferred embodiment of the present invention, certainly can not limit with this interest field of the present invention, and the equivalent variations of therefore doing according to the claims in the present invention, still belongs to the scope that the present invention is contained.
Claims (2)
1. a mobile terminal communication method that is applicable to nuclear power station plant area, is characterized in that, comprising:
Mobile terminal carries out the search of pilot signal, and by the Special Pilot-aided signal fusing of the pilot signal of obtaining and described mobile terminal stores; Described Special Pilot-aided signal is the pilot signal that particular base station sends; Described particular base station is the base station that signal cover comprises the part or all of plant area of nuclear power station;
If the pilot signal of described acquisition for mobile terminal is Special Pilot-aided signal, described mobile terminal enters static condition, and the transmitting power of self is adjusted into 0, receives the signal from described particular base station, but any signal of outgoing not;
If described mobile terminal does not search any pilot signal, described mobile terminal enters deadlock state, and the transmitting power of self and received power are all adjusted into 0;
Described mobile terminal, at deadlock state described in preset time interval backed off after random, re-starts the search of pilot signal;
If the pilot signal of described acquisition for mobile terminal is Special Pilot-aided signal, described mobile terminal enters static condition, comprising:
As long as described mobile terminal determines that the pilot signal obtain is Special Pilot-aided signal, the power of described Special Pilot-aided signal no matter, described mobile terminal all enters static condition.
2. a mobile terminal that is applicable to nuclear power station plant area, is characterized in that, comprising:
Pilot signal processing module, for carrying out the search of pilot signal, and by the Special Pilot-aided signal fusing of the pilot signal of obtaining and described mobile terminal stores; Described Special Pilot-aided signal is the pilot signal that particular base station sends; Described particular base station is the base station that signal cover comprises the part or all of plant area of nuclear power station;
Plant environment communication module, for when described pilot signal processing module is judged its pilot signal of obtaining as Special Pilot-aided signal, control described mobile terminal and enter static condition, the transmitting power of mobile terminal is adjusted into 0, make it receive the signal from described particular base station, but any signal of outgoing not;
Deadlock state control module, for when described pilot signal processing module does not search any pilot signal, controls described mobile terminal and enters deadlock state, and the transmitting power of mobile terminal and received power are all adjusted into 0;
Described deadlock state control module comprises:
Timing unit, enters the time threshold that needs to maintain this deadlock state after deadlock state for preset mobile terminal;
Deadlock control unit, for when described pilot signal processing module does not search any pilot signal, controls described mobile terminal and enters deadlock state, and the transmitting power of mobile terminal and received power are all adjusted into 0; And control described pilot signal processing module and stop the search to pilot signal;
Deadlock release unit, reaches for enter the time of deadlock state at described mobile terminal after the time threshold of described timing unit storage, controls mobile terminal and exits described deadlock state, activates the search that described pilot signal processing module re-starts pilot signal.
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| CN106357329B (en) * | 2016-10-18 | 2019-03-19 | 中广核工程有限公司 | Nuclear power plant's handheld terminal, electromagnetic susceptibility origin base station wireless communications method, apparatus and system |
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| KR100595636B1 (en) * | 2003-12-22 | 2006-06-30 | 엘지전자 주식회사 | Method for searching network in gsm terminal |
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| CN101873563A (en) * | 2010-06-18 | 2010-10-27 | 展讯通信（上海）有限公司 | Signal sending method and mobile terminal |
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| CN1241889A (en) * | 1998-06-30 | 2000-01-19 | 朗迅科技公司 | Method and apparatus for determining whether wireless station is operating within prescribed geographic region |
| EP1841255A1 (en) * | 2006-03-28 | 2007-10-03 | Carlos Alberto Pérez Lafuente | Method and system for monitoring a mobile station presence in a special area |
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Effective date of registration: 20151209 Address after: 518000 Guangdong city of Shenzhen province Futian District science and technology building, Shangbu Road 15 Patentee after: Lingao Nuclear Power Co., Ltd. Patentee after: Zhongkehua Nuclear Power Technology Institute Co., Ltd. Patentee after: China General Nuclear Power Corporation Address before: 518000 Guangdong city of Shenzhen province Futian District science and technology building, Shangbu Road 15 Patentee before: Zhongkehua Nuclear Power Technology Institute Co., Ltd. Patentee before: China Guangdong Nuclear Power Group Co., Ltd. |
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Address after: 518000 Guangdong city of Shenzhen province Futian District science and technology building, Shangbu Road 15 Patentee after: Lingao Nuclear Power Co., Ltd. Patentee after: CHINA NUCLEAR POWER TECHNOLOGY RESEARCH INSTITUTE Patentee after: China General Nuclear Power Corporation Address before: 518000 Guangdong city of Shenzhen province Futian District science and technology building, Shangbu Road 15 Patentee before: Lingao Nuclear Power Co., Ltd. Patentee before: Zhongkehua Nuclear Power Technology Institute Co., Ltd. Patentee before: China General Nuclear Power Corporation |