CN103458422A - Wireless device and disturbance judging method thereof - Google Patents
Wireless device and disturbance judging method thereof Download PDFInfo
- Publication number
- CN103458422A CN103458422A CN2012101831959A CN201210183195A CN103458422A CN 103458422 A CN103458422 A CN 103458422A CN 2012101831959 A CN2012101831959 A CN 2012101831959A CN 201210183195 A CN201210183195 A CN 201210183195A CN 103458422 A CN103458422 A CN 103458422A
- Authority
- CN
- China
- Prior art keywords
- judge
- cca
- wireless device
- treatment circuit
- make
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Mobile Radio Communication Systems (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
Abstract
The invention discloses a wireless device and a disturbance judging method thereof. The wireless device works in a first bandwidth mode, and according to at least one received radio frequency signal, accounts first clear channel assessment (CCA) associated with a first main channel, the amount of second CCA associated with a sub-channel, the amount of integrated CCA associated with the main channel or the sub-channel or the main channel and the sub-channel, and the number of false alarms. Then, if the amount of the second CCA surpasses the sum of the amount of the first CCA and a deviation value, the wireless device judges that the wireless device is in a disturbance state, and judges that the disturbance state belongs to a first disturbance type or a second disturbance type according to the ratio of the amount of the integrated CCA and the number of the false alarms.
Description
Technical field
The present invention is about a kind of wireless device and disturb determination methods.Espespecially a kind of can passing through judges that whether wireless device is in disturbance state, then determines that disturbance state belongs to the wireless device of the first interference type or the first interference type and disturbs determination methods.
Background technology
Along with Wireless LAN (wireless local area network; WLAN) development, for reaching high channel flow (throughput; TP) demand, (the Institute of Electrical and Electronic Engineers of Institute of Electrical and Electronics Engineers; IEEE) formulated up-to-date Wi-Fi standard 802.11n.802.11n standard, except 20 megahertzes (MHz) transmitting bandwidth of supporting former 802.11abg standard, is more supported the 40MHz transmitting bandwidth, the 802.11n standard is used two adjacent 20MHz passages as a 40MHz passage, to increase channel capacity.
The WLAN wireless device is used 2.4 gigahertz (GHZ)s (GHz) frequency range to carry out the signal transmission.Yet, due to the 2.4GHz frequency range by multiple wireless device, for example blue-tooth device, household radio telephone and WLAN device are used jointly, therefore when a WLAN wireless device in the 2.4GHz frequency range and while using the 40MHz transmitting bandwidth, the signal that easily suffers other uses with the wireless device of frequency range is disturbed, and have influence on transmission usefulness.In the case, if can't effectively process interference problem, the channel capacity that the WLAN wireless device is used the 40MHz transmitting bandwidth to carry out the signal transmission will be lowered significantly, and even its channel capacity may be lower than the channel capacity that uses the 20MHz transmitting bandwidth to carry out the signal transmission.
In view of this, how reducing by a WLAN wireless device because the signal of other wireless devices disturbs the possibility that affects its channel capacity, is the industry problem demanding prompt solution.
Summary of the invention
The object of the present invention is to provide a kind of wireless device and disturb determination methods.Wireless device of the present invention judges that by the idle assessment of the channel quantity that compares two passages whether itself is in a disturbance state, and according to the ratio of whole channel idle assessment quantity and a false alarm quantity, judge this disturbance state belong to one first interference type and one second interference type one of them.Thus, wireless device can reduce the impact of disturbing respectively according to the first interference type and the second interference type, to guarantee its transmission usefulness.
For reaching above-mentioned purpose, the present invention discloses a kind of wireless device, and it comprises a radio circuit and a treatment circuit.This radio circuit is in order to receive at least one radiofrequency signal from a main channel and a channel.This treatment circuit, be electrically connected to this radio circuit, and in order to judge that this wireless device works in one first frequency range pattern, and according to this at least one radiofrequency signal, the idle assessment of one first channel (the clear channel assessment that counting is associated with this main channel; CCA) quantity, one the 2nd CCA quantity be associated with this channel, with this main channel and this channel at least one of them whole CCA quantity be associated and a false alarm (false alarm:FA) quantity.This treatment circuit is more in order to judge that the 2nd CCA quantity surpasses the sum total of a CCA quantity and a departure, to judge that this wireless device is in a disturbance state, and according to a ratio of this integral body CCA quantity and this false alarm quantity, judge this disturbance state belong to one first interference type and one second interference type one of them.
For reaching aforementioned purpose, the present invention more discloses a kind of determination methods of the interference for a R-T unit.This R-T unit comprises the treatment circuit that a radio circuit and is electrically connected to this radio circuit.This flow improvement method comprises the following step: (a) make this treatment circuit judge that this wireless device works in one first frequency range pattern; (b) make this radio circuit receive at least one radiofrequency signal from a main channel and a channel; (c) make this treatment circuit according to this at least one radiofrequency signal, the idle assessment of one first channel (the clear channel that counting is associated with this main channel; CCA) quantity, one the 2nd CCA quantity be associated with this channel, with this main channel and this channel at least one of them whole CCA quantity be associated and a false alarm (false alarm:FA) quantity; (d) make this treatment circuit judge that the 2nd CCA quantity surpasses the sum total of a CCA quantity and a departure, to judge that this wireless device is in a disturbance state; And (e) make the ratio of this treatment circuit according to this integral body CCA quantity and this false alarm quantity, judge this disturbance state belong to one first interference type and one second interference type one of them.
After consulting execution mode graphic and that describe subsequently, affiliated technical field has knows that the knowledgeable just can understand other purpose of the present invention usually, and technological means of the present invention and enforcement aspect.
The accompanying drawing explanation
The schematic diagram that Fig. 1 is wireless device 1 of the present invention;
The schematic diagram of the working band that Fig. 2 is wireless device 1;
Fig. 3 describes the situation of the first interference type;
Fig. 4 describes the situation of the second interference type;
The flow chart of the interference determination methods that Fig. 5 is the present invention's the 4th enforcement;
The flow chart of the interference determination methods that Fig. 6 A-6B is the present invention's the 5th enforcement; And
The flow chart of the interference determination methods that Fig. 7 A-7B is the present invention's the 6th enforcement.
Wherein, description of reference numerals is as follows:
1 wireless device
11 radio circuits
13 treatment circuits
102 radiofrequency signals
The P_CH main channel
S_CH channel
Embodiment
Below will explain content of the present invention by embodiment, embodiments of the invention not must any specific environment, application or particular form as described embodiments can be implemented in order to limit the present invention.Therefore, about the explanation of embodiment, be only explaination purpose of the present invention, but not in order to limit the present invention.Should be noted that, in following examples and accompanying drawing, with the non-directly related element of the present invention, omit and do not illustrate; And in accompanying drawing, each interelement size relationship is only for asking easy understanding, non-in order to limit actual ratio.
The first embodiment of the present invention as shown in Figure 1, its schematic diagram that is a wireless device 1.Wireless device 1 comprises a radio circuit 11 and treatment circuit 13.In the present embodiment, wireless device 1 is one to meet the WLAN wireless device of an IEEE 802.11n standard, and can be an access point (access point) and a wireless network card one of them.The palpus expositor, the principle of simplifying based on explanation is omitted and is not illustrated with the circuit of the more incoherent details of the present invention in wireless device 1, and do not repeated in this in figure.
Fig. 2 describes the schematic diagram of the working band of wireless device 1.Wireless device 1, according to IEEE 802.11n standard, in the 2.4GHz frequency range, select a 20MHz transmitting bandwidth as main channel P_CH, and another adjacent 20MHz transmitting bandwidth is as inferior channel S_CH.In the present embodiment, the selected main channel P_CH of assumed wireless device 1, compared to inferior channel S_CH relative clean, supposes that the signal interference mainly goes out occurrence channel S_CH.Because How to choose is compared the technology contents of clean channel as the non-influences of the present invention of main channel P_CH, and affiliated technical field technical staff can reach according to prior art, therefore not in this to go forth.
Particularly, according to the idle assessment of the channel in IEEE 802.11n standard (CCA) mechanism, the energy of the radiofrequency signal 102 that treatment circuit 13 can receive according to radio circuit 11 in main channel P_CH and time channel S_CH judges respectively whether main channel P_CH and time channel S_CH are idle (idle).If radiofrequency signal 102 energy that receive from main channel P_CH are greater than a critical value, judge that main channel P_CH is busy.Similarly, if the radio frequency energy 102 received from time channel S_CH is greater than this critical value, judgement time channel S_CH is busy.Treatment circuit 13 counts respectively main channel P_CH and time channel S_CH is busy number of times, is a CCA quantity and the 2nd CCA quantity.In addition, treatment circuit 13 more according to main channel P_CH and time channel S_CH wherein arbitrary be busy, count whole CCA quantity.In other words, once main channel P_CH and time channel S_CH one of them or be busy simultaneously, the value that treatment circuit 13 is about to whole CCA quantity increases, the 40MHz transmitting bandwidth of counting instantly of take is busy number of times.
Because as long as main channel P_CH reaches time channel S_CH, one of them is busy, it is busy that treatment circuit 13 is the 40MHz transmitting bandwidth of thinking instantly, thinks and instantly may have tendency to develop to deliver to the radiofrequency signal 102 of wireless device 1.In the case, treatment circuit 13 receives and processes radiofrequency signal 102 from radio circuit 11.When treatment circuit 13 is processed radiofrequency signal 102, when if in determination processing, the WLAN signal of wireless device 1 is delivered in the non-WLAN signal of radiofrequency signal 102 or non-tendency to develop, by this judgement 40MHz transmitting bandwidth instantly, be that busy situation is considered as a false alarm (false alarm:FA), and counting FA quantity.
As before described, radiofrequency signal 102 can be the radiofrequency signal of the various 2.4GHz of being transmitted in frequency ranges, even and its also may deliver to for non-tendency to develop the WLAN signal of wireless device 1 for the WLAN signal.For example, as shown in Figure 3, the Bluetooth signal of narrow frequency may appear in inferior channel S_CH, and the part WLAN signal (be the WLAN signal of tool 5MHz translation) overlapping with inferior channel S_CH.In addition, as shown in Figure 4, may occur using the WLAN signal of identical 20MHz transmitting bandwidth in inferior channel S_CH, but another WLAN wireless device is delivered in this WLAN signal tendency to develop, but not wireless device 1.In the present embodiment, be similar to signal that these radiofrequency signals in Fig. 3 produce and disturb and classify as the first interference type, disturb and classify as the second interference type and be similar to signal that these radiofrequency signals in Fig. 4 produce.
In the situation that disturbing, above-mentioned signal exists, treatment circuit 13 will be because judging that time channel S_CH is busy, and receive and process radiofrequency signal 102, and miss the radiofrequency signal 102 that wireless device 1 is delivered in real tendency to develop, and cause channel capacity to be lowered significantly, the channel capacity that even channel capacity may be when working in the second frequency range pattern (20MHz transmitting bandwidth pattern).For judging that whether wireless device 1 is in disturbance state (being two kinds of above-mentioned interference types), treatment circuit 13 judges whether the 2nd CCA quantity surpasses the sum total of a CCA quantity and a departure.When the 2nd CCA quantity surpasses the sum total of a CCA quantity and departure, treatment circuit 13 judgement wireless devices are in disturbance state.Subsequently, treatment circuit 13 is again according to a ratio of whole CCA quantity and false alarm quantity, the judgement disturbance state belong to the first interference type and the second interference type one of them.
When treatment circuit 13 these ratios of judgement are greater than a default ratio, judge that disturbance state belongs to the first interference type.Otherwise, when treatment circuit 13 these ratios of judgement are not more than (being less than or equal to) default ratio, judge that disturbance state belongs to the second interference type.Thus, wireless device 1 can carry out corresponding treatment measures respectively according to the first interference type and the second interference type, to reduce the impact of disturbing, and then guarantees its channel capacity.
The second embodiment of the present invention also as shown in Figure 1.In the present embodiment, wireless device 1 is that an access point or is set as independent basic service group (independent basic service set; IBSS) wireless network card of pattern.After treatment circuit 13 judgement wireless devices 1 work in the first frequency range pattern, more judge wireless device 1 whether with user's device line.If wireless device 1 with user's device line, treatment circuit 13 judges whether whole CCA quantity is greater than the sum total whether a CCA critical value and the 2nd CCA quantity surpass a CCA quantity and departure.If whole CCA quantity is greater than the sum total that CCA critical value and the 2nd CCA quantity surpass a CCA quantity and departure, judge that wireless device 1 is in disturbance state.
On the other hand, if treatment circuit 13 judgement wireless devices 1 with user's device line, treatment circuit 13 more judges that user's device works in the first frequency range pattern or the second frequency range pattern.If judgement user device works in the first frequency range pattern (40MHz transmitting bandwidth pattern), treatment circuit 13 more judges that whether wireless device 1 is in disturbance state.Particularly, if in wireless device 1 not yet with user's device line before, treatment circuit 13 has judged that wireless device 1 is in disturbance state, the type for the treatment of circuit 13 mark wireless devices 1 in disturbance state and disturbance state thereof.Otherwise, if treatment circuit 13 has judged that wireless device 1 is not in disturbance state, treatment circuit 13 mark wireless devices 1 are not in disturbance state.For example, treatment circuit 13 can be used a mark value to represent that whether wireless device 1 is in disturbance state, and wherein mark value equals at 0 o'clock, represent that wireless device 1 is not in disturbance state, and mark value equals at 1 o'clock, represents that wireless device 1 is in disturbance state.Above-mentioned mark value can be stored in the additional storage device of the buffer for the treatment of circuit 13 or wireless device 1.
Then, if wireless device 1 not in disturbance state, treatment circuit 13 judges whether a channel capacity is greater than a channel capacity critical value.If channel capacity is less than or equal to the channel capacity critical value, treatment circuit 13 then judges whether whole CCA quantity is greater than the CCA critical value and whether the 2nd CCA quantity surpasses the sum total of a CCA quantity and a departure Bias_1 to judge that whether wireless device 1 is in disturbance state.Now, if judgement wireless device 1 judges the type of disturbance state further in disturbance state.
In addition, if channel capacity is greater than the channel capacity critical value, treatment circuit 13 then judges whether the 2nd CCA quantity surpasses the sum total of a CCA quantity and a departure Bias_2, to judge that whether wireless device 1 is in disturbance state.Similarly, if judgement wireless device 1 judges the type of disturbance state further in disturbance state.Need the expositor, in the present embodiment, above-mentioned departure Bias_1 and departure Bias_2 are different numerical value, but, in other embodiment, it also can be identical numerical value.
In addition, after judgement wireless device 1 has worked in the first frequency range pattern (40MHz transmitting bandwidth pattern) with user's device line and user's device, if treatment circuit 13 judgement wireless devices 1, in disturbance state, further judge that disturbance state belongs to the first interference type or the second interference type.Some states of disturbing belong to the first interference type, and treatment circuit 13 only, according to the CCA of main channel P_CH, receives and process follow-up at least one radiofrequency signal 102 from radio circuit 11.In other words, in the case, whether treatment circuit 13 is only busy according to main channel P_CH, receive and process follow-up at least one radiofrequency signal 102 from radio circuit 11, to avoid signal in dimension channel S_CH to disturb, cause treatment circuit 13 to receive and process from radio circuit 11 the WLAN signal that wireless device 1 is delivered in non-WLAN signal or non-tendency to develop.
In addition, some states of disturbing belong to the second interference type, and treatment circuit 13 activation radio circuit 11 broadcast one repeat to send request (duplicate request-to-send; Duplicate RTS) information.Thus, by broadcast, repeat to send request, wireless device 13 can be used the WLAN device of identical 20MHz transmitting bandwidth (i.e. time channel S_CH) to be coordinated with other, avoid signal collision (collision) with the common transmitted frequency range, and avoid receiving and processing the WLAN signal that wireless device 1 is delivered in non-tendency to develop.In addition, in the judgement wireless device 1 with user's device line after, if treatment circuit 13 judgement user devices work in the second frequency range pattern (20MHz transmitting bandwidth pattern), treatment circuit 13 only, according to a CCA of main channel, receives and processes follow-up radiofrequency signal 102 from radio circuit 11.
From above-mentioned the second embodiment, the present invention can pass through to judge that whether wireless device is in disturbance state, then determine that disturbance state belongs to the first interference type or the first interference type.Once wireless device and user's line, and both work in the first frequency range pattern (40MHz transmitting bandwidth pattern), if determined disturbance state and interference type, according to interference type, carry out corresponding treatment measures, to reduce the impact of disturbing, and then guarantee its channel capacity.
The third embodiment of the present invention also as shown in Figure 1.In the present embodiment, the wireless network card that wireless device 1 is user's device.After treatment circuit 13 judgement wireless devices 1 work in the first frequency range pattern, treatment circuit 13 more judges that whether wireless device 1 is in disturbance state.It should be noted that, wireless device 1 is default in disturbance state not; In other words, when treatment circuit 13 was not carried out the judgement of following disturbance state, wireless device 1 hypothesis is in disturbance state not.
If wireless device 1 is not in disturbance state, treatment circuit 13 judges whether a channel capacity is greater than a channel capacity critical value.If channel capacity is less than or equal to the channel capacity critical value, treatment circuit 13 then judges whether whole CCA quantity is greater than the CCA critical value and whether the 2nd CCA quantity surpasses the sum total of a CCA quantity and departure Bias_1 to judge that whether wireless device 1 is in disturbance state.Now, if judgement wireless device 1 judges the type of disturbance state further in disturbance state.
In addition, if channel capacity is greater than the channel capacity critical value, treatment circuit 13 then judges whether the 2nd CCA quantity surpasses the sum total of a CCA quantity and departure Bias_2, to judge that whether wireless device 1 is in disturbance state.Similarly, if judgement wireless device 1 judges the type of disturbance state further in disturbance state.It should be noted that, in the present embodiment, above-mentioned departure Bias_1 and departure Bias_2 are different numerical value, but, in other embodiment, it can be identical numerical value.It is relevant whether the setting of departure Bias_1 and departure Bias_2 and channel capacity are greater than the channel capacity critical value.The setting of departure determines that the 2nd CCA quantity surpasses the ratio of a CCA quantity.For example, departure can be set for benchmark by 1.5 times over a CCA quantity based on the 2nd CCA quantity.
If treatment circuit 13 judgement wireless devices 1, in disturbance state, further judge that disturbance state belongs to the first interference type or the second interference type.Some states of disturbing belong to the first interference type, and treatment circuit 13 only, according to the CCA of main channel P_CH, receives and process follow-up at least one radiofrequency signal 102 from radio circuit 11.In other words, whether treatment circuit 13 is only busy according to main channel P_CH, receive and process follow-up at least one radiofrequency signal 102 from radio circuit 11, to avoid signal in dimension channel S_CH to disturb, cause treatment circuit 13 to receive and process from radio circuit 11 the WLAN signal that wireless device 1 is delivered in non-WLAN signal or non-tendency to develop.
In addition, some states of disturbing belong to the second interference type, and treatment circuit 13 activation radio circuit 11 broadcast one repeat to send request (duplicate request-to-send; Duplicate RTS) information.Thus, by broadcast, repeat to send request, wireless device 13 can be used the WLAN device of identical 20MHz transmitting bandwidth (i.e. time channel S_CH) to be coordinated with other, avoid signal collision (collision) with the common transmitted frequency range, and avoid receiving and processing the WLAN signal that wireless device 1 is delivered in non-tendency to develop.
From above-mentioned the 3rd embodiment, the present invention can pass through to judge that whether wireless device is in disturbance state, then determine that disturbance state belongs to the first interference type or the first interference type.If wireless device works in the first frequency range pattern (40MHz transmitting bandwidth pattern) and has determined disturbance state and interference type, can carry out corresponding treatment measures according to interference type, to reduce the impact of disturbing, and then guarantee its channel capacity.
The of the present invention the 4th is embodied as a kind of interference determination methods, and its flow chart is depicted in Fig. 5.For a R-T unit, (for example: the wireless device 1 of the first embodiment), it comprises the treatment circuit that a radio circuit and is electrically connected to radio circuit to interference determination methods of the present invention.
At first, disturb determination methods execution step 501, make treatment circuit judge whether wireless device works in the first frequency range pattern (40MHz transmitting bandwidth pattern).If wireless device is to work in the first frequency range pattern in the first frequency range pattern, perform step 503, make radio circuit receive at least one radiofrequency signal from main channel and time channel.Otherwise, if the wireless device inoperative performs step 505 in the first frequency range pattern, stop interference determination methods of the present invention.In other words, when the wireless device inoperative, during in the first frequency range pattern, interference determination methods of the present invention, without the step that continues to carry out other, does not consider that wireless device works in the situation of the second frequency range pattern (20MHz transmitting bandwidth pattern).
After execution step 503, perform step 507, make treatment circuit according at least one radiofrequency signal, the idle assessment of the first channel (the clear channel assessment that counting is associated with main channel; CCA) quantity, the 2nd CCA quantity be associated with time channel, with main channel and inferior channel at least one of them whole CCA quantity be associated and a false alarm (false alarm:FA) quantity.Then, in step 509, make treatment circuit judge whether the 2nd CCA quantity surpasses the sum total of a CCA quantity and departure.If the 2nd CCA quantity surpasses the sum total of a CCA quantity and departure, perform step 511, make treatment circuit judgement wireless device in disturbance state.Otherwise, if the 2nd CCA quantity does not surpass the sum total of a CCA quantity and departure, perform step 513, stop interference determination methods of the present invention.In detail, when the 2nd CCA quantity does not surpass the sum total of a CCA quantity and departure, treatment circuit thinks that wireless device is not in disturbance state, therefore interference determination methods of the present invention is without continuing to carry out again other step.
After execution step 511, perform step 515, make treatment circuit judge whether the ratio of whole CCA quantity and false alarm quantity is greater than a default ratio.If be greater than default ratio, perform step 517, the judgement disturbance state belongs to the first interference type.Otherwise, if be less than or equal to default ratio, performing step 519, the judgement disturbance state belongs to the second interference type.
Except above-mentioned steps, the interference determination methods of the 4th embodiment also can be carried out the described all operations of the first embodiment and function, under the technical field technical staff can be directly acquainted with the 4th embodiment how based on the first embodiment to carry out these operations and function, therefore do not repeat them here.
The of the present invention the 5th is embodied as a kind of interference determination methods, and its flow chart is depicted in Fig. 6 A to 6B.For a R-T unit, (for example: the wireless device 1 of the second embodiment), it comprises the treatment circuit that a radio circuit and is electrically connected to radio circuit to interference determination methods of the present invention.
At first, disturb determination methods execution step 601, make treatment circuit judge whether wireless device works in the first frequency range pattern (40MHz transmitting bandwidth pattern).If wireless device is to work in the first frequency range pattern in the first frequency range pattern, perform step 603, make radio circuit receive at least one radiofrequency signal from main channel and time channel.Otherwise, if the wireless device inoperative performs step 605 in the first frequency range pattern, stop interference determination methods of the present invention.In other words, when the wireless device inoperative, during in the first frequency range pattern, interference determination methods of the present invention, without the step that continues to carry out other, does not consider that wireless device works in the situation of the second frequency range pattern (20MHz transmitting bandwidth pattern).
After execution step 603, execution step 607, make treatment circuit according at least one radiofrequency signal, count one the one CCA quantity be associated with main channel, one the 2nd CCA quantity be associated with time channel, with main channel, reach at least one of them a whole CCA quantity and FA quantity be associated of time channel.Then, in step 609, make treatment circuit judge wireless device whether with user's device line.If wireless device not yet with user's device line, perform step 611, make treatment circuit judge whether that whole CCA quantity is greater than the sum total that CCA critical value and the 2nd CCA quantity surpass a CCA quantity and departure Bias_1.If whole CCA quantity is greater than the sum total that CCA critical value and the 2nd CCA quantity surpass a CCA quantity and departure Bias_1, perform step 613, make treatment circuit judge that wireless device is in disturbance state.Otherwise, if whole CCA quantity is not greater than the CCA critical value or the 2nd CCA quantity does not surpass the sum total of a CCA quantity and departure Bias_1, perform step 615, stop interference determination methods of the present invention.In detail, when the 2nd CCA quantity does not surpass the sum total of a CCA quantity and departure Bias_1, treatment circuit thinks that wireless device is not in disturbance state, therefore interference determination methods of the present invention is without continuing to carry out again other step.
After execution step 613, perform step 617, make treatment circuit judge whether the ratio of whole CCA quantity and false alarm quantity is greater than default ratio.If be greater than default ratio, perform step 619, the judgement disturbance state belongs to the first interference type.Otherwise, if be less than or equal to default ratio, performing step 621, the judgement disturbance state belongs to the second interference type.
In step 609, if wireless device with user's device line, perform step 623, make treatment circuit judge whether user's device works in the first frequency range pattern.If user's device works in the first frequency range pattern, perform step 625, make treatment circuit judge that whether wireless device is in disturbance state.If wireless device, not yet in disturbance state, performs step 627, make treatment circuit judge whether channel capacity is greater than the channel capacity critical value.If channel capacity is less than or equal to the channel capacity critical value, then perform step 611.Otherwise, if channel capacity is greater than the channel capacity critical value, perform step 635, make treatment circuit judge whether the 2nd CCA quantity surpasses the sum total of a CCA quantity and deviate Bias_2.
If the 2nd CCA quantity surpasses the sum total of a CCA quantity and deviate Bias_2, perform step 613.Otherwise, if the 2nd CCA quantity does not surpass the sum total of a CCA quantity and deviate Bias_2, perform step 637, stop interference determination methods of the present invention.In detail, when whole CCA quantity is not greater than CCA critical value or the 2nd CCA quantity and surpasses the sum total of a CCA quantity and departure Bias_2, treatment circuit thinks that wireless device is not in disturbance state, therefore interference determination methods of the present invention is without continuing to carry out again other step.
In step 625, if wireless device, in disturbance state, performs step 631, make treatment circuit judge whether disturbance state belongs to the first interference type, judge that disturbance state is the first interference type or the second interference type.Some states of disturbing belong to the first interference type, perform step 629, make treatment circuit only according to a CCA of main channel, from radio circuit, receive and process follow-up at least one radiofrequency signal.Moreover some states of disturbing do not belong to the first interference type (belonging to the second interference type), perform step 633, make treatment circuit activation radio circuit broadcast one repeat to send request information.In addition, if in step 623, treatment circuit judgement user device inoperative, in the first frequency range pattern (working in the second frequency range pattern), also performs step 629.
Except above-mentioned steps, the interference determination methods of the 5th embodiment also can be carried out the described all operations of the second embodiment and function, under the technical field technical staff can be directly acquainted with the 5th embodiment how based on the second embodiment to carry out these operations and function, therefore do not repeat them here.
The of the present invention the 6th is embodied as a kind of interference determination methods, and its flow chart is depicted in Fig. 7 A to 7B.For a R-T unit, (for example: the wireless device 1 of the 3rd embodiment), it comprises the treatment circuit that a radio circuit and is electrically connected to radio circuit to interference determination methods of the present invention.
At first, disturb determination methods execution step 701, make treatment circuit judge whether wireless device works in the first frequency range pattern (40MHz transmitting bandwidth pattern).If wireless device is to work in the first frequency range pattern in the first frequency range pattern, perform step 703, make radio circuit receive at least one radiofrequency signal from main channel and time channel.Otherwise, if the wireless device inoperative performs step 705 in the first frequency range pattern, stop interference determination methods of the present invention.In other words, when the wireless device inoperative, during in the first frequency range pattern, interference determination methods of the present invention, without the step that continues to carry out other, does not consider that wireless device works in the situation of the second frequency range pattern (20MHz transmitting bandwidth pattern).
After execution step 703, execution step 707, make treatment circuit according at least one radiofrequency signal, count one the one CCA quantity be associated with main channel, one the 2nd CCA quantity be associated with time channel, with main channel, reach at least one of them a whole CCA quantity and FA quantity be associated of time channel.Then, in step 709, make treatment circuit judge that whether wireless device is in disturbance state.If wireless device, not yet in disturbance state, performs step 711, make treatment circuit judge whether disturbance state belongs to the first interference type, judge disturbance state be the first interference type or the second interference type one of them.Some states of disturbing belong to the first interference type, perform step 713, make treatment circuit only according to a CCA of main channel, from radio circuit, receive and process follow-up at least one radiofrequency signal.Moreover some states of disturbing do not belong to the first interference type (belonging to the second interference type), perform step 715, make treatment circuit activation radio circuit broadcast one repeat to send request information.
On the other hand, in step 709, if wireless device, not yet in disturbance state, performs step 717, make treatment circuit judge whether channel capacity is greater than the channel capacity critical value.If channel capacity is less than or equal to channel capacity, perform step 723, make treatment circuit judge whether that whole CCA quantity is greater than the sum total that a CCA critical value and the 2nd CCA quantity surpass a CCA quantity and departure Bias_1.If whole CCA quantity is greater than the sum total that CCA critical value and the 2nd CCA quantity surpass a CCA quantity and departure Bias_1, perform step 727, make treatment circuit judge that wireless device is in disturbance state.Otherwise, if whole CCA quantity is not greater than the CCA critical value or the 2nd CCA quantity does not surpass the sum total of a CCA quantity and departure Bias_1, perform step 725, stop interference determination methods of the present invention.In detail, when whole CCA quantity is not greater than CCA critical value or the 2nd CCA quantity and surpasses the sum total of a CCA quantity and departure Bias_1, treatment circuit thinks that wireless device is not in disturbance state, therefore interference determination methods of the present invention is without continuing to carry out again other step.
After step 727, perform step 729, make treatment circuit judge whether the ratio of whole CCA quantity and false alarm quantity is greater than default ratio.If be greater than default ratio, perform step 731, make treatment circuit judgement disturbance state belong to the first interference type.Otherwise, if be less than or equal to default ratio, performing step 733, the judgement disturbance state belongs to the second interference type.
In addition, if in step 717, if channel capacity is greater than the channel capacity critical value, perform step 719, make treatment circuit judge whether the 2nd CCA quantity surpasses the sum total of a CCA quantity and deviate Bias_2.If the 2nd CCA quantity surpasses the sum total of a CCA quantity and deviate Bias_2, perform step 727.Otherwise, if the 2nd CCA quantity does not surpass the sum total of a CCA quantity and deviate Bias_2, perform step 721, stop interference determination methods of the present invention.In detail, when whole CCA quantity is not greater than CCA critical value or the 2nd CCA quantity and surpasses the sum total of a CCA quantity and departure Bias_2, treatment circuit thinks that wireless device is not in disturbance state, therefore interference determination methods of the present invention is without continuing to carry out again other step.
Except above-mentioned steps, the interference determination methods of the 6th embodiment also can be carried out the described all operations of the 3rd embodiment and function, under the technical field technical staff can be directly acquainted with the 6th embodiment how based on the 3rd embodiment to carry out these operations and function, therefore do not repeat them here.
In sum, the present invention disturbs by the judgement signal, and, for different interference types, carries out corresponding treatment measures, to reduce the impact of disturbing, and then guarantees the channel capacity of WLAN wireless device.Therefore, when the WLAN wireless device works in 40MHz transmitting bandwidth pattern, the present invention can reduce the WLAN wireless device and disturb because of the signal of other wireless devices the possibility that affects its channel capacity.
The above embodiments only are used for exemplifying enforcement aspect of the present invention, and explain technical characterictic of the present invention, not are used for limiting protection category of the present invention.Any be familiar with this operator can unlabored change or the arrangement of isotropism all belong to the scope that the present invention advocates, the scope of the present invention should be as the criterion with the claim protection range.
Claims (32)
1. a wireless device comprises:
One radio circuit, in order to receive at least one radiofrequency signal from a main channel and a channel;
One treatment circuit, be electrically connected to this radio circuit, in order to judge that this wireless device works in one first frequency range pattern, according to this at least one radiofrequency signal, one the one CCA quantity that counting is associated with this main channel, one the 2nd CCA quantity be associated with this channel, with this main channel and this channel one of them a whole CCA quantity and false alarm quantity be associated at least, and judge that the 2nd CCA quantity surpasses the sum total of a CCA quantity and a departure, to judge that this wireless device is in a disturbance state, and according to a ratio of this integral body CCA quantity and this false alarm quantity, judge this disturbance state belong to one first interference type and one second interference type one of them.
2. wireless device as claimed in claim 1, wherein this treatment circuit more judges that this ratio is greater than a default ratio, belongs to this first interference type to judge this disturbance state.
3. wireless device as claimed in claim 1, wherein this treatment circuit more judges that this ratio is less than or equal to a default ratio, belongs to this second interference type to judge this disturbance state.
4. wireless device as claimed in claim 1, wherein this treatment circuit is more in order to judge that this wireless device works in one first frequency range pattern, judge this wireless device not with user's device line, and judge that this integral body CCA quantity is greater than the sum total that a CCA critical value and the 2nd CCA quantity surpass a CCA quantity and this departure, to judge that this wireless device is in this disturbance state.
5. wireless device as claimed in claim 1, wherein this treatment circuit more in order to judge this wireless device with user's device line.
6. wireless device as claimed in claim 5, wherein this treatment circuit is more in order to judge that this user's device works in this first frequency range pattern, judge that this wireless device is not yet in this disturbance state, judge that a channel capacity is less than or equal to a channel capacity critical value, and judge that this integral body CCA quantity is greater than the sum total that a CCA critical value and the 2nd CCA quantity surpass a CCA quantity and this departure, to judge that this wireless device is in this disturbance state.
7. wireless device as claimed in claim 5, wherein this treatment circuit more, in order to judge that this user's device works in this first frequency range pattern, judges that this wireless device is not yet in this disturbance state, and judges that a channel capacity is greater than a channel capacity critical value.
8. wireless device as claimed in claim 5, wherein this treatment circuit is more in order to judge that this user's device works in this first frequency range pattern, judge that this wireless device is in this disturbance state, and judge that this disturbance state belongs to this first interference type, with this treatment circuit, only according to one the one CCA of this main channel, this radio circuit receives and processes this follow-up at least one radiofrequency signal certainly.
9. wireless device as claimed in claim 5, wherein this treatment circuit is more in order to judge that this user's device works in this first frequency range pattern, judge that this wireless device is in this disturbance state, and judging that this disturbance state belongs to this second interference type, this radio circuit broadcast one of this treatment circuit activation repeats to send request information.
10. wireless device as claimed in claim 5, this treatment circuit is more in order to judge that this user's device works in one second frequency range pattern, this treatment circuit is only according to one the one CCA of this main channel, and this radio circuit receives and process this follow-up at least one radiofrequency signal certainly.
11. wireless device as claimed in claim 1, wherein this treatment circuit is more in order to judge that this wireless device is not yet in this disturbance state, judge that a channel capacity is less than or equal to a channel capacity critical value, and judge that this integral body CCA quantity is greater than the sum total that a CCA critical value and the 2nd CCA quantity surpass a CCA quantity and this departure, to judge that this wireless device is in this disturbance state.
12. wireless device as claimed in claim 1, wherein this treatment circuit is more in order to judge that this wireless device is not yet in this disturbance state, and judges that a channel capacity is greater than a channel capacity critical value.
13. wireless device as claimed in claim 1, wherein this treatment circuit is more in order to judge that this wireless device is in this disturbance state, and judge that this disturbance state belongs to this first interference type, this treatment circuit is only according to one the one CCA quantity of this main channel, and this radio circuit receives and process this follow-up at least one radiofrequency signal certainly.
14. wireless device as claimed in claim 1, wherein this treatment circuit is more in order to judge that this wireless device is in this disturbance state, and judging that this disturbance state belongs to this second interference type, this radio circuit broadcast one of this treatment circuit activation repeats to send request information.
15. wireless device as claimed in claim 1, wherein this treatment circuit comprises a plurality of counters, in order to count respectively a CCA quantity, the 2nd CCA quantity, this integral body CCA quantity and this false alarm quantity.
16. wireless device as claimed in claim 1, wherein this wireless device meets an IEEE 802.11n standard, and be an access point and a wireless network card one of them.
17. the determination methods of the interference for a R-T unit, this R-T unit comprises the treatment circuit that a radio circuit and is electrically connected to this radio circuit, and this interference determination methods comprises the following step:
(a) make this treatment circuit judge that this wireless device works in one first frequency range pattern;
(b) make this radio circuit receive at least one radiofrequency signal from a main channel and a channel;
(c) make this treatment circuit according to this at least one radiofrequency signal, the idle CCA of assessment of one first channel that counting is associated with this main channel) one the 2nd CCA quantity that is associated of quantity, this channel, with this main channel and this channel one of them a whole CCA quantity and false alarm quantity be associated at least;
(d) make this treatment circuit judge that the 2nd CCA quantity surpasses the sum total of a CCA quantity and a departure, to judge that this wireless device is in a disturbance state; And
(e) make the ratio of this treatment circuit according to this integral body CCA quantity and this false alarm quantity, judge this disturbance state belong to one first interference type and one second interference type one of them.
18. interference determination methods as claimed in claim 17, wherein this step (e) more comprises the following step:
(e1) make this treatment circuit more judge that this ratio is greater than a default ratio, belongs to this first interference type to judge this disturbance state.
19. interference determination methods as claimed in claim 17, wherein this step (e) more comprises the following step:
(e2) make this treatment circuit more judge that this ratio is less than or equal to a default ratio, belongs to this second interference type to judge this disturbance state.
20. interference determination methods as claimed in claim 17 wherein more comprises the following step before in this step (d):
(f1) make this treatment circuit judge this wireless device not with user's device line; And this step (d) more comprises the following step:
(d1) make this treatment circuit judge that this integral body CCA quantity is greater than the sum total that a CCA critical value and the 2nd CCA quantity surpass a CCA quantity and this departure, to judge that this wireless device is in this disturbance state.
21. interference determination methods as claimed in claim 17 wherein more comprises the following step before in this step (d):
(f2) make this treatment circuit judge this wireless device with user's device line.
22. interference determination methods as claimed in claim 21 wherein more comprises the following step before in this step (d):
(f3) make this treatment circuit judge that this user's device works in this first frequency range pattern;
(f4) make this treatment circuit judge that this wireless device is not yet in this disturbance state;
(f5) make this treatment circuit judge that a channel capacity is less than or equal to a channel capacity critical value; And this step (d) more comprises the following step:
(d1) make this treatment circuit judge that this integral body CCA quantity is greater than the sum total that a CCA critical value and the 2nd CCA quantity surpass a CCA quantity and this departure, to judge that this wireless device is in this disturbance state.
23. interference determination methods as claimed in claim 21 wherein more comprises the following step before in this step (d):
(f3) make this treatment circuit judge that this user's device works in this first frequency range pattern;
(f4) make this treatment circuit judge that this wireless device is not yet in this disturbance state; And
(f6) make this treatment circuit judge that a channel capacity is greater than a channel capacity critical value.
24. interference determination methods as claimed in claim 17 wherein more comprises the following step after this step (e):
(f2) make this treatment circuit judge this wireless device with user's device line;
(f3) make this treatment circuit judge that this user's device works in this first frequency range pattern;
(f7) make this treatment circuit judge that this wireless device is in this disturbance state;
(f8) make this treatment circuit judge that this disturbance state belongs to this first interference type; And
(f9) make this treatment circuit only according to one the one CCA of this main channel, this radio circuit receives and processes this follow-up at least one radiofrequency signal certainly.
25. interference determination methods as claimed in claim 17 wherein more comprises the following step after this step (e):
(f2) make this treatment circuit judge this wireless device with user's device line;
(f3) make this treatment circuit judge that this user's device works in this first frequency range pattern;
(f7) make this treatment circuit judge that this wireless device is in this disturbance state;
(f10) make this treatment circuit judge that this disturbance state belongs to this second interference type; And
(f11) make this radio circuit broadcast one of this treatment circuit activation repeat to send request information.
26. interference determination methods as claimed in claim 17 wherein more comprises the following step after this step (e):
(f2) make this treatment circuit judge this wireless device with user's device line;
(f12) make this treatment circuit judge that this user's device works in one second frequency range pattern; And
(f13) make this treatment circuit only according to one the one CCA of this main channel, this radio circuit receives and processes this follow-up at least one radiofrequency signal certainly.
27. interference determination methods as claimed in claim 17 wherein more comprises the following step before in this step (d):
(f4) make this treatment circuit judge that this wireless device is not yet in this disturbance state;
(f5) make this treatment circuit judge that a channel capacity is less than or equal to a channel capacity critical value; And this step (d) more comprises the following step:
(d1) make this treatment circuit judge that this integral body CCA quantity is greater than the sum total that a CCA critical value and the 2nd CCA quantity surpass a CCA quantity and this departure, to judge that this wireless device is in this disturbance state.
28. interference determination methods as claimed in claim 17 wherein more comprises the following step before in this step (d):
(f4) make this treatment circuit judge that this wireless device is not yet in this disturbance state; And
(f6) make this treatment circuit judge that a channel capacity is greater than a channel capacity critical value.
29. interference determination methods as claimed in claim 17 wherein more comprises the following step after this step (e):
(f7) make this treatment circuit judge that this wireless device is in this disturbance state;
(f8) make this treatment circuit judge that this disturbance state belongs to this first interference type;
(f9) make this treatment circuit only according to one the one CCA of this main channel, this radio circuit receives and processes this follow-up at least one radiofrequency signal certainly.
30., as asked the described interference determination methods of claim 17, wherein after this step (e), more comprise the following step:
(f7) make this treatment circuit judge that this wireless device is in this disturbance state;
(f10) make this treatment circuit judge that this disturbance state belongs to this second interference type; And
(f11) make this radio circuit broadcast one of this treatment circuit activation repeat to send request information.
31. interference determination methods as claimed in claim 17, wherein this treatment circuit comprises a plurality of counters, in order to count respectively a CCA quantity, the 2nd CCA quantity, this integral body CCA quantity and this false alarm quantity.
32. interference determination methods as claimed in claim 17, wherein this wireless device meets an IEEE802.11n standard, and be an access point and a wireless network card one of them.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210183195.9A CN103458422B (en) | 2012-06-05 | 2012-06-05 | Wireless device and interference determination methods thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210183195.9A CN103458422B (en) | 2012-06-05 | 2012-06-05 | Wireless device and interference determination methods thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103458422A true CN103458422A (en) | 2013-12-18 |
| CN103458422B CN103458422B (en) | 2016-07-06 |
Family
ID=49740290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210183195.9A Active CN103458422B (en) | 2012-06-05 | 2012-06-05 | Wireless device and interference determination methods thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103458422B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106664729A (en) * | 2014-09-18 | 2017-05-10 | Lg 电子株式会社 | Method and device for transmitting and receiving signal to and from ENB by user equipment in wireless communication system that supports carrier aggregation |
| CN107113905A (en) * | 2014-12-31 | 2017-08-29 | 微软技术许可有限责任公司 | Dynamic self-adapting and non-self-adapting pattern switching |
| CN107454998A (en) * | 2015-04-10 | 2017-12-08 | 摩托罗拉移动有限责任公司 | Coexisted in device in LTE authorizes auxiliary access operation with other technologies |
| WO2020102986A1 (en) * | 2018-11-20 | 2020-05-28 | 深圳市欢太科技有限公司 | Method and device for interference processing, storage medium, and electronic device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101369884A (en) * | 2008-09-11 | 2009-02-18 | 重庆邮电大学 | Industrial wireless communication method of self-adapting signal channel jumping based on time slot |
| US20090285116A1 (en) * | 2004-10-20 | 2009-11-19 | Qualcomm Incorporated | Multiple frequency band operation in wireless networks |
| TW201010465A (en) * | 2008-07-03 | 2010-03-01 | Koninkl Philips Electronics Nv | Interference management |
-
2012
- 2012-06-05 CN CN201210183195.9A patent/CN103458422B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090285116A1 (en) * | 2004-10-20 | 2009-11-19 | Qualcomm Incorporated | Multiple frequency band operation in wireless networks |
| TW201010465A (en) * | 2008-07-03 | 2010-03-01 | Koninkl Philips Electronics Nv | Interference management |
| CN101369884A (en) * | 2008-09-11 | 2009-02-18 | 重庆邮电大学 | Industrial wireless communication method of self-adapting signal channel jumping based on time slot |
Non-Patent Citations (1)
| Title |
|---|
| IEEE PROJECT 802.11 WIRELESS LOCAL AREA NETWORKS: ""Propose Standard:Physical Layer Specifications for 2.4GHz Frequency Hopping Spread Spectrum Wireless LAN"", 《DOC: IEEE P802.11-94/068R4》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106664729A (en) * | 2014-09-18 | 2017-05-10 | Lg 电子株式会社 | Method and device for transmitting and receiving signal to and from ENB by user equipment in wireless communication system that supports carrier aggregation |
| CN106664729B (en) * | 2014-09-18 | 2020-06-26 | Lg 电子株式会社 | Method and apparatus for transmitting and receiving signal to and from an ENB by a user equipment in a wireless communication system supporting carrier aggregation |
| CN107113905A (en) * | 2014-12-31 | 2017-08-29 | 微软技术许可有限责任公司 | Dynamic self-adapting and non-self-adapting pattern switching |
| CN107454998A (en) * | 2015-04-10 | 2017-12-08 | 摩托罗拉移动有限责任公司 | Coexisted in device in LTE authorizes auxiliary access operation with other technologies |
| CN107454998B (en) * | 2015-04-10 | 2021-04-27 | 摩托罗拉移动有限责任公司 | In-device coexistence with other technologies in LTE grant assisted access operations |
| WO2020102986A1 (en) * | 2018-11-20 | 2020-05-28 | 深圳市欢太科技有限公司 | Method and device for interference processing, storage medium, and electronic device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103458422B (en) | 2016-07-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20170230874A1 (en) | Rrm measurement method, measurement system, terminal and base station | |
| CN103974369B (en) | A kind of channel selecting method and its system based on WLAN wireless channel scorings | |
| CN101803417B (en) | Selecting wider bandwidth channels in a wireless network | |
| CN104735729B (en) | Scheduling of resource, information processing method, base station, baseband processor and user equipment | |
| WO2016082292A1 (en) | Channel detection method and system, device having functions of base station, and terminal | |
| CN104486013A (en) | Channel detection method, channel detection system, terminal and base station | |
| CN103458422A (en) | Wireless device and disturbance judging method thereof | |
| CN105337715B (en) | It is a kind of based on the carrier wave measurement method of unauthorized frequency range and base station | |
| CN104363657A (en) | Device with base station function and method and system for data transmission | |
| Xue et al. | Beijing spectrum survey for cognitive radio applications | |
| US8989244B2 (en) | Beacon detection structures, systems and processes for interference testing | |
| KR101816567B1 (en) | Method and apparatus of interference avoidance based on multi transmission and reception | |
| DE112012000992T5 (en) | Radio communication device, radio communication system and frequency allocation method | |
| TWI474746B (en) | Wireless apparatus and interference determination method | |
| CN103957541B (en) | The recognition methods of uplink interference type | |
| CN106413051A (en) | WiFi connection method and system | |
| Ayeni et al. | Spatial spectrum utilization efficiency metric for spectrum sharing system | |
| CN103269498B (en) | A kind of detection method of adjacent frequency interference and device | |
| EP2464174A1 (en) | Method, device and system for measuring noise floor of base station antenna port | |
| CN106550395B (en) | Method and device for detecting signal strength | |
| CN104853381A (en) | Broadband radio frequency and spectrum resource monitoring system and method | |
| Fanan et al. | Comparison of spectrum occupancy measurements using software defined radio RTL-SDR with a conventional spectrum analyzer approach | |
| TWI792670B (en) | Network communication apparatus and network communication monitoring method thereof having full band monitoring mechanism | |
| CN111384997B (en) | Energy saving method for C-HPAV system, storage medium, and electronic apparatus | |
| CN103731169A (en) | Receiving sensitivity improvement method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |