CN103889000A - Channel allocation method and device - Google Patents
Channel allocation method and device Download PDFInfo
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- CN103889000A CN103889000A CN201210564729.2A CN201210564729A CN103889000A CN 103889000 A CN103889000 A CN 103889000A CN 201210564729 A CN201210564729 A CN 201210564729A CN 103889000 A CN103889000 A CN 103889000A
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Abstract
The invention discloses a channel allocation method and a device. The method comprises steps: an access request message sent by a terminal is received and the signal intensity of sent signals of the terminal is measured; the signal to noise ratio corresponding to each idle channel is acquired according to the noise power of each idle channel and the signal intensity of sent signals of the terminal; the signal to noise ratio corresponding to each idle channel is compared with a first preset threshold value and a second preset threshold value, wherein the first preset threshold value is smaller than the second preset threshold value; according to the comparison result, one idle channel whose signal to noise ratio has the highest matching degree with user service quality parameters is selected from idle channels to be allocated to the terminal as the channel for the terminal to be accessed to wireless network. By adopting the technical scheme of the invention, according to the preset two threshold values, channel resources are allocated reasonably, and the problem that communication quality of part terminals is influenced can be effectively avoided.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of method for channel allocation and device.
Background technology
In communication system, in the time that user communicates by terminal, terminal need to send to base station the access of access request message request, and base station receives after above-mentioned access request message, idle channel is dispensed to this terminal, and this terminal can be by above-mentioned idle channel access wireless network.
As can be seen here, channel allocation is the precondition that terminal communicates business.Existing Channel distribution mode is that the idle channel of channel quality optimum is dispensed to terminal, be specially: base station obtains the signal strength signal intensity of terminal transmitted signal, and detect in real time the noise power of each idle channel, estimated the signal to noise ratio of each idle channel by the signal strength signal intensity of above-mentioned transmitted signal and noise power; By the highest signal to noise ratio be that the idle channel of channel quality optimum is dispensed to terminal, make terminal by the highest idle channel access wireless network of above-mentioned signal to noise ratio, to reach anti-interference, improve the object of terminal communication quality.
Consult under the Channel distribution mode Figure 1 shows that under prior art the schematic diagram that is related between signal to noise ratio and QoS of customer parameter.As shown in Figure 1, when QoS of customer parameter is for being not less than 3, corresponding to the signal to noise ratio of idle channel for being not less than at 9 o'clock, the communication quality of terminal can be guaranteed.Known in conjunction with above-mentioned existing Channel distribution mode, in the time of terminal 1 request access wireless network, base station can select the idle channel 1 that signal to noise ratio is the highest to distribute to terminal 1 in all idle channels, and terminal 2 is later than terminal 1 request access wireless network, when the signal strength signal intensity 2 of the transmitted signal of terminal 2 is during lower than the signal strength signal intensity 1 of the transmitted signal of terminal 1, because terminal 1 is distributed to by idle channel minimum noise power 1 in base station, now, base station can only select the idle channel 2 that signal to noise ratio is the highest to distribute to terminal 2 in remaining idle channel, it is the noise power 1 that the noise power 2 of idle channel 2 is greater than idle channel 1, therefore, the signal to noise ratio of idle channel 2 correspondences will likely be far longer than the signal to noise ratio of idle channel 1 correspondence, when the signal to noise ratio of idle channel 2 correspondences is lower than 9 time, the communication quality of terminal 2 will be affected.
Therefore, adopting above-mentioned allocated channel mode is terminal distribution channel resource, exists channel resource allocation unbalanced, thereby causes terminal distribution corresponding to the weak transmitted signal of signal strength signal intensity to the lower idle channel of signal to noise ratio, affects the problem of terminal communication quality.
Summary of the invention
The embodiment of the present invention provides a kind of method for channel allocation and device, in order to solve prior art exist channel resource allocation unbalanced, cause terminal distribution corresponding to the weak transmitted signal of signal strength signal intensity to the lower idle channel of signal to noise ratio, affect the problem of terminal communication quality.
The concrete technical scheme that the embodiment of the present invention provides is as follows:
A kind of method for channel allocation, comprising:
The access request message that receiving terminal sends, measures the signal strength signal intensity of the transmitted signal of described terminal;
According to the noise power of each idle channel, and the signal strength signal intensity of the transmitted signal of terminal, the signal to noise ratio that each idle channel is corresponding obtained;
Signal to noise ratio corresponding described each idle channel is compared with the first predetermined threshold value and the second predetermined threshold value respectively, and wherein, the first predetermined threshold value is less than the second predetermined threshold value;
According to comparative result, from idle channel, select the idle channel that signal to noise ratio and QoS of customer parameter matching degree are the highest, be dispensed to the channel of described terminal as described terminal access wireless network.
A kind of channel dividing arrangement, comprising:
Measuring unit, for the access request message of receiving terminal transmission, measures the signal strength signal intensity of the transmitted signal of described terminal;
Acquiring unit, for according to the noise power of each idle channel, and the signal strength signal intensity of the transmitted signal of terminal, obtain the signal to noise ratio that each idle channel is corresponding;
Comparing unit, for signal to noise ratio corresponding described each idle channel is compared with the first predetermined threshold value and the second predetermined threshold value respectively, wherein, the first predetermined threshold value is less than the second predetermined threshold value;
Allocation units for according to comparative result, are selected the idle channel that signal to noise ratio and QoS of customer parameter matching degree are the highest from idle channel, are dispensed to the channel of described terminal as described terminal access wireless network.
In the embodiment of the present invention, the access request message that receiving terminal sends, the signal strength signal intensity of the transmitted signal of measuring terminals; According to the noise power of each idle channel, and the signal strength signal intensity of the transmitted signal of terminal, the signal to noise ratio that each idle channel is corresponding obtained; Signal to noise ratio corresponding each idle channel is compared with the first predetermined threshold value and the second predetermined threshold value respectively, and wherein, the first predetermined threshold value is less than the second predetermined threshold value; According to comparative result, from idle channel, select the idle channel that signal to noise ratio and QoS of customer parameter matching degree are the highest, be dispensed to the channel of terminal as terminal access wireless network.Adopt technical solution of the present invention, according to two default threshold values, reasonable distribution channel resource, effectively avoid the signal to noise ratio of a part of terminal access channel too high, and the signal to noise ratio of a part of terminal access channel is too low, cause channel resource allocation unbalanced, affect the problem of part terminal communication quality.
Accompanying drawing explanation
Fig. 1 is signal to noise ratio and QoS of customer parameter schematic diagram under Channel distribution mode in prior art;
Fig. 2 is channel allocation detail flowchart in the embodiment of the present invention;
Fig. 3 is channel allocation effect schematic diagram in the embodiment of the present invention;
Fig. 4 is that in the embodiment of the present invention, concrete application scenarios lower channel distributes detail flowchart;
Fig. 5 is the noise power schematic diagram of different idle channels under concrete application scenarios in the embodiment of the present invention;
Fig. 6 is channel dividing arrangement structural representation in the embodiment of the present invention.
Embodiment
In order to solve in prior art in the time that base station adopts the existing channel method of salary distribution to be terminal distribution channel, the channel resource allocation existing is unbalanced, cause terminal distribution corresponding to the weak transmitted signal of signal strength signal intensity to the lower idle channel of signal to noise ratio, affect the problem of communication quality.In the embodiment of the present invention, the access request message that receiving terminal sends, the signal strength signal intensity of the transmitted signal of measuring terminals; According to the noise power of each idle channel, and the signal strength signal intensity of the transmitted signal of terminal, the signal to noise ratio that each idle channel is corresponding obtained; Signal to noise ratio corresponding each idle channel is compared with the first predetermined threshold value and the second predetermined threshold value respectively, and wherein, the first predetermined threshold value is less than the second predetermined threshold value; According to comparative result, from idle channel, select the idle channel that signal to noise ratio and QoS of customer parameter matching degree are the highest, be dispensed to the channel of terminal as terminal access wireless network.Adopt technical solution of the present invention, according to two default threshold values, reasonable distribution channel resource, effectively avoid the signal to noise ratio of a part of terminal access channel too high, and the signal to noise ratio of a part of terminal access channel is too low, cause channel resource allocation unbalanced, affect the problem of part terminal communication quality.
Below in conjunction with accompanying drawing, the preferred embodiment of the present invention is elaborated.
Consult shown in Fig. 2, in the embodiment of the present invention, the detailed process of channel allocation is:
Step 200: the access request message that receiving terminal sends, the signal strength signal intensity of the transmitted signal of measuring terminals.
In the embodiment of the present invention, in the time that user need to communicate business by terminal, terminal will send to base station access request message, to ask to access wireless network.The access request message that base station receiving terminal sends, and the signal strength signal intensity of the transmitted signal of measuring terminals, this signal strength signal intensity is the power of this transmitted signal.
Step 210: according to the noise power of each idle channel, and the signal strength signal intensity of the transmitted signal of terminal, obtain the signal to noise ratio that each idle channel is corresponding.
In the embodiment of the present invention, the noise power of each idle channel is detected in base station, and according to the signal strength signal intensity of the transmitted signal of the above-mentioned terminal of obtaining, estimates the signal to noise ratio (being signal to noise ratio=transmitted signal power/noise power) of each idle channel.
Step 220: signal to noise ratio corresponding each idle channel is compared with the first predetermined threshold value and the second predetermined threshold value respectively.
In the embodiment of the present invention, default two threshold values, are respectively the first predetermined threshold value and the second predetermined threshold value, and wherein, the first predetermined threshold value is less than the second predetermined threshold value.The span of the first predetermined threshold value and the second predetermined threshold value is determined conventionally as the case may be, for example, in engineering, conventionally require, in the time that the signal to noise ratio of channel is not less than 12, can guarantee the communication quality of terminal, therefore, the first predetermined threshold value can be preset as 12.
Signal to noise ratio corresponding each idle channel obtaining in said process is compared with the first predetermined threshold value and the second predetermined threshold value respectively.
Step 230: according to comparative result, select the idle channel that signal to noise ratio and QoS of customer parameter matching degree are the highest from idle channel, be dispensed to the channel of terminal as terminal access wireless network.
In the embodiment of the present invention, signal to noise ratio corresponding each idle channel obtaining is compared with the first predetermined threshold value and the second predetermined threshold value respectively, to select the idle channel that signal to noise ratio and QoS of customer parameter matching degree are the highest to be dispensed to terminal from all idle channels, terminal is by this idle channel access wireless network.Above-mentioned signal to noise ratio and QoS of customer parameter matching degree are the highest refers to that the channel that is dispensed to terminal meets the minimum standard (signal to noise ratio corresponding to channel that is terminal distribution is 9 ~ 12) that guarantees terminal communication quality.
In the embodiment of the present invention, signal to noise ratio corresponding to channel that base station is terminal distribution meets proper communication quality, and above-mentioned channel might not be a highest channel of signal to noise ratio in all idle channels.In the time that the power of the transmitted signal of terminal is larger, the idle channel of noise power minimum can't be distributed to this terminal, when guaranteeing the lower-powered terminal request access of follow-up transmitted signal wireless network, be assigned to the poor idle channel of channel quality.For example, when the power of terminal transmitted signal is-80dB, the noise power of idle channel 1 is-100dB that the noise power of idle channel 2 is-92dB, the signal to noise ratio of estimating idle channel 1 correspondence is 20, the signal to noise ratio of idle channel 2 correspondences is 12, in engineering, in the time that signal to noise ratio is 12, can meet good communication quality, therefore, idle channel 2 is dispensed to terminal by base station, can guarantee that the signal to noise ratio of terminal and QoS of customer parameter matching degree are the highest.
In the embodiment of the present invention, according to comparative result, from all idle channels, select an idle channel that signal to noise ratio and QoS of customer parameter matching degree are the highest to be dispensed to terminal as follows as the detailed process of the channel of terminal access wireless network:
According to signal to noise ratio corresponding to each idle channel of obtaining, and first predetermined threshold value and the second predetermined threshold value, judge in above-mentioned all idle channels and whether exist the signal to noise ratio that at least one idle channel is corresponding to be greater than the first predetermined threshold value, and be less than the second predetermined threshold value.Exist signal to noise ratio corresponding at least one idle channel to be greater than the first predetermined threshold value when judging, and while being less than the second predetermined threshold value, from above-mentioned at least one idle channel, select an idle channel to be dispensed to the channel of terminal as terminal access wireless network.In the embodiment of the present invention, when there being N(N > 1) individual idle channel meets above-mentioned condition, can from this N idle channel, select at random an idle channel to be dispensed to the channel of terminal as this terminal access wireless network; Also can from this N idle channel, select the idle channel that signal to noise ratio is the highest to be dispensed to the channel of terminal as this terminal access wireless network; Can also from this N idle channel, be dispensed to the channel of terminal as this terminal access wireless network by the minimum idle channel of selective channel resource utilization.
Do not exist signal to noise ratio to be greater than described the first predetermined threshold value when judging, and while being less than the idle channel of the second predetermined threshold value, according to signal to noise ratio corresponding to above-mentioned each idle channel, and second predetermined threshold value, judge in above-mentioned all idle channels and whether exist the signal to noise ratio that at least one idle channel is corresponding to be greater than the second predetermined threshold value.When judging while existing signal to noise ratio corresponding at least one idle channel to be greater than the second predetermined threshold value, from being greater than at least one idle channel of the second predetermined threshold value, signal to noise ratio corresponding to above-mentioned idle channel select the idle channel of signal to noise ratio minimum to be dispensed to the channel of terminal as terminal access wireless network.Adopt technique scheme, the signal strength signal intensity that can prevent the transmitted signal of formerly asking the terminal 1 that accesses wireless network is stronger, and the idle channel of noise power minimum is dispensed to this terminal 1 by base station, when thereby the signal strength signal intensity of transmitted signal that may cause the terminal 2 of subsequent request access wireless network is poor, base station can only be dispensed to terminal 2 by idle channel larger noise power, finally affects the problem of terminal 2 communication qualities.
When judging the idle channel that does not exist signal to noise ratio to be greater than described the first predetermined threshold value and be less than the second predetermined threshold value, and while not existing signal to noise ratio to be greater than the idle channel of the second predetermined threshold value, from all idle channels, select the idle channel of signal to noise ratio maximum to be dispensed to the channel of terminal as terminal access wireless network.The signal to noise ratio that now each idle channel is corresponding is all less than the first predetermined threshold value, and in order to guarantee the communication quality of terminal, idle channel the highest signal to noise ratio is dispensed to terminal by base station.
After base station according to the above-mentioned method of salary distribution is the selected idle channel of terminal, to terminal channel assignment message, notification terminal is by the above-mentioned idle channel access wireless network that is dispensed to this terminal, service data transmission.
In the embodiment of the present invention, base station receives after the request access message of terminal transmission, in the process for terminal distribution channel, has both guaranteed the communication quality of the terminal of formerly request access wireless network, the communication quality that has guaranteed again the terminal of subsequent request access wireless network, has improved QoS of customer.Adopt technical solution of the present invention, while having avoided employing existing channel distribution method to be multiple terminal distribution channel, the problem that cannot guarantee the poor terminal communication quality of transmitted signal of existence.Consult and Figure 3 shows that signal to noise ratio distribution map corresponding to channel that is dispensed to terminal under different channels distribution method, wherein, curve 1 has represented that signal to noise ratio corresponding to channel that uses conventional channel distribution method to be dispensed to terminal distributes, and signal to noise ratio corresponding to channel that curve 2 representatives are used method for channel allocation of the present invention to be dispensed to terminal distributes.Consult Fig. 3 known, adopt technical solution of the present invention, signal to noise ratio corresponding to channel using when each terminal access wireless network distributes comparatively average, the terminal that the poor channel (being less than 12) of signal to noise ratio is corresponding is more, the terminal of channel (the being greater than 25) correspondence that signal to noise ratio is too good is also more, and while using the channel access wireless network of high s/n ratio, can not obviously improve QoS of customer parameter, terminal need not be used the channel access wireless network of high s/n ratio.Adopt technical solution of the present invention, the corresponding terminal quantity of signal to noise ratio below 12 declines to a great extent, and improved the communication quality of multiple terminals.
Consult described in Fig. 4, below in conjunction with concrete application scenarios, introduce in detail channel allocation detailed process in the embodiment of the present invention and be:
Step 400: the access request message that receiving terminal sends, the signal strength signal intensity of the transmitted signal of measuring terminals.
Step 410: according to the noise power of each idle channel, and the signal strength signal intensity of the transmitted signal of terminal, obtain respectively the signal to noise ratio that each idle channel is corresponding.
For example, consult the noise power schematic diagram that Figure 5 shows that each idle channel in embodiment of the present invention Zhong Yige community.As shown in table 1 is in the embodiment of the present invention, according to the noise power of each idle channel,
And the signal strength signal intensity of the transmitted signal of terminal, signal to noise ratio corresponding to each idle channel obtaining.
Table 1
| Channel number | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| C(terminal strength of transmitted signals) | -80 | -80 | -80 | -80 | -80 | -80 | -80 | -80 |
| I(channel noise power) | -100 | -98 | -88 | -94 | -80 | -102 | -100 | -102 |
| C/I(signal to noise ratio) | 20 | 18 | 8 | 14 | 0 | 22 | 20 | 22 |
As shown in table 2 is in the embodiment of the present invention, while adopting traditional Channel distribution mode, and each terminal that terminal is obtained to the order of base station transmission access request message and the corresponding table of signal to noise ratio corresponding to the idle channel of distribution thereof.
Table 2
As shown in Table 2, while adopting traditional Channel distribution mode, signal to noise ratio corresponding to the channel that exists four terminal distribution to use is lower than 12, communication quality is poor, there is the signal to noise ratio of the channel that 50% terminal distribution uses lower than 12, easily cause terminal generation call drop phenomenon, and have the communication quality of the channel that 37.5% terminal distribution uses excessively good.
Step 420: signal to noise ratio corresponding each idle channel is compared with the first predetermined threshold value and the second predetermined threshold value respectively.
In the embodiment of the present invention, the second predetermined threshold value is higher than the first predetermined threshold value.
Step 430: according to comparative result, judge whether to exist the signal to noise ratio that at least one idle channel is corresponding to be greater than the first predetermined threshold value, and be less than the second predetermined threshold value, if so, perform step 440; Otherwise, execution step 450.
Step 440: select an idle channel to be dispensed to the channel of terminal as terminal access wireless network from above-mentioned at least one idle channel.
Step 450: according to comparative result, judge whether to exist the signal to noise ratio that at least one idle channel is corresponding to be greater than the second predetermined threshold value, if so, perform step 460; Otherwise, execution step 470.
Step 460: select the idle channel of signal to noise ratio minimum to be dispensed to the channel of terminal as terminal access wireless network from signal to noise ratio corresponding to above-mentioned idle channel is greater than at least one idle channel of the second predetermined threshold value.
Step 470: select the idle channel of signal to noise ratio maximum to be dispensed to the channel of terminal as terminal access wireless network from all idle channels.
For example, default the first predetermined threshold value is that 12, the second predetermined threshold value are 18, consults table 3 and be depicted as the corresponding table of signal to noise ratio corresponding to channel of terminal in the embodiment of the present invention and distribution thereof.
Table 3
As shown in Table 3, adopt technical solution of the present invention, after default two threshold values, only have the channel quality of channel of 25% terminal distribution lower than the communication quality requirement in engineering.
And for example, when default the first predetermined threshold value is that 10, the second predetermined threshold value are, consult table 4 and be depicted as the corresponding table of signal to noise ratio corresponding to channel of terminal in the embodiment of the present invention and distribution thereof at 16 o'clock.
Table 4
| User's order | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| C(subscriber signal) | -80 | -82 | -78 | -85 | -90 | -89 | -92 | -87 |
| Channel number | 4 | 2 | 3 | 7 | 1 | 6 | 8 | 5 |
| I (channel) | -94 | -98 | -88 | -100 | -100 | -102 | -102 | -80 |
| C/I(signal to noise ratio) | 14 | 16 | 10 | 15 | 10 | 13 | 10 | -7 |
As shown in Table 4, after the first predetermined threshold value and the second predetermined threshold value that change is default, can make channel quality value of being near the mark of the channel that more terminal distribution obtains, only have the channel quality of channel of 12.5% terminal distribution poor.
In sum, in the embodiment of the present invention, the access request message that receiving terminal sends, the signal strength signal intensity of the transmitted signal of measuring terminals; According to the noise power of each idle channel, and the signal strength signal intensity of the transmitted signal of terminal, the signal to noise ratio that each idle channel is corresponding obtained; Signal to noise ratio corresponding each idle channel is compared with the first predetermined threshold value and the second predetermined threshold value respectively, and wherein, the first predetermined threshold value is less than the second predetermined threshold value; According to comparative result, from all idle channels, select the idle channel that signal to noise ratio and QoS of customer parameter matching degree are the highest to be dispensed to the channel of terminal as terminal access wireless network.Adopt technical solution of the present invention, by default two default threshold values (i.e. the first predetermined threshold value and the second predetermined threshold value), adopt and use new channel assignment strategy, can make signal to noise ratio corresponding to channel that is dispensed to each terminal remain in an interval as far as possible.When applying technical solution of the present invention in the community that is being subject to uplink interference (no matter inside and outside band), can up signal to noise ratio corresponding to all terminals of balance, guarantee the communication quality of nearly all terminal.
Based on technique scheme, consult shown in Fig. 6, can build a kind of channel dividing arrangement, comprise measuring unit 60, acquiring unit 61, comparing unit 62, and allocation units 63, wherein:
Measuring unit 60, the access request message sending for receiving terminal, the signal strength signal intensity of the transmitted signal of measuring terminals;
Acquiring unit 61, for according to the noise power of each idle channel, and the signal strength signal intensity of the transmitted signal of terminal, obtain the signal to noise ratio that each idle channel is corresponding;
Comparing unit 62, for signal to noise ratio corresponding each idle channel is compared with the first predetermined threshold value and the second predetermined threshold value respectively, wherein, the first predetermined threshold value is less than the second predetermined threshold value;
Allocation units 63 for according to comparative result, are selected the idle channel that signal to noise ratio and QoS of customer parameter matching degree are the highest from idle channel, are dispensed to the channel of terminal as terminal access wireless network.
Wherein, allocation units 63, specifically in the time judging that signal to noise ratio corresponding at least one idle channel of existence is greater than the first predetermined threshold value and is less than the second predetermined threshold value, from above-mentioned at least one idle channel, select an idle channel to be dispensed to the channel of terminal as this terminal access wireless network.
Allocation units 63, also for selecting an idle channel to be dispensed to the channel of terminal as this terminal access wireless network from above-mentioned at least one idle channel is random; Or, from above-mentioned at least one idle channel, select the idle channel that signal to noise ratio is the highest to be dispensed to the channel of terminal as this terminal access wireless network; Or the minimum idle channel of selective channel resource utilization is dispensed to the channel of terminal as this terminal access wireless network from above-mentioned at least one idle channel.
Allocation units 63, be further used for the idle channel that does not exist signal to noise ratio to be greater than the first predetermined threshold value and be less than the second predetermined threshold value when judging, and judge while existing signal to noise ratio corresponding at least one idle channel to be greater than the second predetermined threshold value, from signal to noise ratio corresponding to above-mentioned idle channel is greater than at least one idle channel of the second predetermined threshold value, select the idle channel of signal to noise ratio minimum to be dispensed to the channel of terminal as this terminal access wireless network.
Allocation units 63, be further used for the idle channel that does not exist signal to noise ratio to be greater than the first predetermined threshold value and be less than the second predetermined threshold value when judging, and while not existing signal to noise ratio to be greater than the idle channel of the second predetermined threshold value, from all idle channels, select the idle channel of signal to noise ratio maximum to be dispensed to the channel of terminal as this terminal access wireless network.
Allocation units 63, are further used for being allocated successfully message to terminal transmitting channel, indicate this terminal by being dispensed to the idle channel service data transmission of this terminal.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt complete hardware implementation example, completely implement software example or the form in conjunction with the embodiment of software and hardware aspect.And the present invention can adopt the form at one or more upper computer programs of implementing of computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) that wherein include computer usable program code.
The present invention is with reference to describing according to flow chart and/or the block diagram of the method for the embodiment of the present invention, equipment (system) and computer program.Should understand can be by the flow process in each flow process in computer program instructions realization flow figure and/or block diagram and/or square frame and flow chart and/or block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, the instruction that makes to carry out by the processor of computer or other programmable data processing device produces the device for realizing the function of specifying at flow process of flow chart or multiple flow process and/or square frame of block diagram or multiple square frame.
These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, the instruction that makes to be stored in this computer-readable memory produces the manufacture that comprises command device, and this command device is realized the function of specifying in flow process of flow chart or multiple flow process and/or square frame of block diagram or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make to carry out sequence of operations step to produce computer implemented processing on computer or other programmable devices, thereby the instruction of carrying out is provided for realizing the step of the function of specifying in flow process of flow chart or multiple flow process and/or square frame of block diagram or multiple square frame on computer or other programmable devices.
Although described the preferred embodiments of the present invention, once those skilled in the art obtain the basic creative concept of cicada, can make other change and modification to these embodiment.So claims are intended to be interpreted as comprising preferred embodiment and fall into all changes and the modification of the scope of the invention.Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the embodiment of the present invention the embodiment of the present invention.Like this, if within these of the embodiment of the present invention are revised and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (12)
1. a method for channel allocation, is characterized in that, comprising:
The access request message that receiving terminal sends, measures the signal strength signal intensity of the transmitted signal of described terminal;
According to the noise power of each idle channel, and the signal strength signal intensity of the transmitted signal of terminal, the signal to noise ratio that each idle channel is corresponding obtained;
Signal to noise ratio corresponding described each idle channel is compared with the first predetermined threshold value and the second predetermined threshold value respectively, and wherein, the first predetermined threshold value is less than the second predetermined threshold value;
According to comparative result, from idle channel, select the idle channel that signal to noise ratio and QoS of customer parameter matching degree are the highest, be dispensed to the channel of described terminal as described terminal access wireless network.
2. the method for claim 1, it is characterized in that, according to comparative result, from idle channel, select the idle channel that signal to noise ratio and QoS of customer parameter matching degree are the highest, be dispensed to the channel of described terminal as described terminal access wireless network, specifically comprise:
In the time judging that signal to noise ratio corresponding at least one idle channel of existence is greater than described the first predetermined threshold value and is less than the second predetermined threshold value, from described at least one idle channel, select an idle channel, be dispensed to the channel of described terminal as described terminal access wireless network.
3. method as claimed in claim 2, is characterized in that, selects an idle channel from described at least one idle channel, is dispensed to the channel of described terminal as described terminal access wireless network, specifically comprises:
From described at least one idle channel, idle channel of random selection is dispensed to the channel of described terminal as described terminal access wireless network; Or,
From described at least one idle channel, select the idle channel that signal to noise ratio is the highest to be dispensed to the channel of described terminal as described terminal access wireless network; Or,
From described at least one idle channel, the minimum idle channel of selective channel resource utilization is dispensed to the channel of described terminal as described terminal access wireless network.
4. method as claimed in claim 2 or claim 3, is characterized in that, further comprises:
When judging the idle channel that does not exist signal to noise ratio to be greater than described the first predetermined threshold value and be less than the second predetermined threshold value, and judge while existing signal to noise ratio corresponding at least one idle channel to be greater than the second predetermined threshold value, from signal to noise ratio corresponding to idle channel is greater than at least one idle channel of the second predetermined threshold value, select the idle channel of signal to noise ratio minimum to be dispensed to the channel of described terminal as described terminal access wireless network.
5. method as claimed in claim 4, is characterized in that, further comprises:
When judging the idle channel that does not exist signal to noise ratio to be greater than described the first predetermined threshold value and be less than the second predetermined threshold value, and while not existing signal to noise ratio to be greater than the idle channel of the second predetermined threshold value, from idle channel, select the idle channel of signal to noise ratio maximum to be dispensed to the channel of described terminal as described terminal access wireless network.
6. the method for claim 1, it is characterized in that, according to comparative result, from idle channel, select the idle channel that signal to noise ratio and QoS of customer parameter matching degree are the highest to be dispensed to after the channel of described terminal as described terminal access wireless network, further comprise:
Be allocated successfully message to described terminal transmitting channel, indicate described terminal by being dispensed to the idle channel service data transmission of described terminal.
7. a channel dividing arrangement, is characterized in that, comprising:
Measuring unit, for the access request message of receiving terminal transmission, measures the signal strength signal intensity of the transmitted signal of described terminal;
Acquiring unit, for according to the noise power of each idle channel, and the signal strength signal intensity of the transmitted signal of terminal, obtain the signal to noise ratio that each idle channel is corresponding;
Comparing unit, for signal to noise ratio corresponding described each idle channel is compared with the first predetermined threshold value and the second predetermined threshold value respectively, wherein, the first predetermined threshold value is higher than the second predetermined threshold value;
Allocation units for according to comparative result, are selected the idle channel that signal to noise ratio and QoS of customer parameter matching degree are the highest from idle channel, are dispensed to the channel of described terminal as described terminal access wireless network.
8. device as claimed in claim 7, is characterized in that, described allocation units, specifically for:
In the time judging that signal to noise ratio corresponding at least one idle channel of existence is greater than described the first predetermined threshold value and is less than the second predetermined threshold value, from described at least one idle channel, select an idle channel to be dispensed to the channel of described terminal as described terminal access wireless network.
9. device as claimed in claim 8, is characterized in that, described allocation units, specifically for:
From described at least one idle channel, idle channel of random selection is dispensed to the channel of described terminal as described terminal access wireless network; Or,
From described at least one idle channel, select the idle channel that signal to noise ratio is the highest to be dispensed to the channel of described terminal as described terminal access wireless network; Or,
From described at least one idle channel, the minimum idle channel of selective channel resource utilization is dispensed to the channel of described terminal as described terminal access wireless network.
10. install as claimed in claim 8 or 9, it is characterized in that, described allocation units, are further used for:
When judging the idle channel that does not exist signal to noise ratio to be greater than described the first predetermined threshold value and be less than the second predetermined threshold value, and judge while existing signal to noise ratio corresponding at least one idle channel to be greater than the second predetermined threshold value, from signal to noise ratio corresponding to idle channel is greater than at least one idle channel of the second predetermined threshold value, select the idle channel of signal to noise ratio minimum to be dispensed to the channel of described terminal as described terminal access wireless network.
11. devices as claimed in claim 10, is characterized in that, described allocation units, are further used for:
When judging the idle channel that does not exist signal to noise ratio to be greater than described the first predetermined threshold value and be less than the second predetermined threshold value, and while not existing signal to noise ratio to be greater than the idle channel of the second predetermined threshold value, from all idle channels, select the idle channel of signal to noise ratio maximum to be dispensed to the channel of described terminal as described terminal access wireless network.
12. devices as claimed in claim 7, is characterized in that, described allocation units, are further used for:
Be allocated successfully message to described terminal transmitting channel, indicate described terminal by being dispensed to the idle channel service data transmission of described terminal.
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