CN112770300B - Wireless communication device - Google Patents
Wireless communication device Download PDFInfo
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- CN112770300B CN112770300B CN201911070108.7A CN201911070108A CN112770300B CN 112770300 B CN112770300 B CN 112770300B CN 201911070108 A CN201911070108 A CN 201911070108A CN 112770300 B CN112770300 B CN 112770300B
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- 230000005540 biological transmission Effects 0.000 claims description 12
- 230000003321 amplification Effects 0.000 claims description 10
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 10
- 238000010586 diagram Methods 0.000 description 5
- 230000035945 sensitivity Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/14—Spectrum sharing arrangements between different networks
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a wireless communication device, one embodiment of which comprises a wireless transceiver, a Bluetooth transceiver and a Bluetooth controller. The wireless transceiver supports at least one wireless communication specification (e.g., at least one of a range of IEEE 802.11 specifications) and communicates wirelessly over a wireless channel for a period of time. The Bluetooth transceiver sequentially carries out Bluetooth communication through a plurality of Bluetooth channels in the period of time, and the Bluetooth controller judges that the center frequency difference between the wireless channel and a Bluetooth channel falls in one of N preset intervals and controls the Bluetooth transceiver to use one of N groups of parameters accordingly.
Description
Technical Field
The present invention relates to a wireless communication device, and more particularly, to a wireless communication device supporting wireless lan communication and bluetooth communication.
Background
When a Bluetooth (BT) transceiver and a Wi-Fi transceiver of the same device coexist in the 2.4GHz band, the two transceivers may interfere with each other, which may cause an increase in transmission error rate. There are several ways to reduce collisions between BT transceivers and Wi-Fi transceivers:
1. The time of using the same frequency band by the BT transceiver and the Wi-Fi transceiver is allocated through the exchange of the operation states of the BT transceiver and the Wi-Fi transceiver. If the Wi-Fi transceiver needs to receive the packet, the BT transceiver stops sending signals. If the BT transceiver has a packet with high priority to be received, the Wi-Fi transceiver stops sending signals; if the packets to be received by the BT transceiver are packets which are generally acceptable for retransmission, the BT transceiver waits until the Wi-Fi transceiver is idle to receive the packets. The disadvantage of the above approach is that only one party can receive or transmit signals in the same frequency band at the same time, which reduces the traffic (throughput) of both parties.
2. The influence on the Wi-Fi transceiver is reduced by adjusting the signal strength of the transmitting end of the BT transceiver or adjusting the parameters of the receiving end. If the BT transceiver knows that the Wi-Fi transceiver is receiving the signal, the BT transceiver weakens the signal strength of the transmitting end of the BT transceiver so as to reduce the influence on the Wi-Fi receiving end; if the BT transceiver knows that the Wi-Fi transceiver is transmitting, the BT transceiver reduces the sensitivity (sensitivity) of its receiving end to avoid excessively amplifying the interference component derived from the Wi-Fi transceiver in the signal received by the receiving end of the BT transceiver. Since the above-described method makes the adjustment without difference (non-discriminatory adjustment) only according to whether the Wi-Fi transceiver is receiving/transmitting signals, the interference level between the BT transceiver and the Wi-Fi transceiver is not considered, the method may result in an increase in the reception failure rate of the remote BT device (which is an online object of the BT transceiver) or a decrease in the sensitivity of the receiving end of the BT transceiver on average.
Disclosure of Invention
An object of the present invention is to provide a wireless communication apparatus for increasing the success rate of bluetooth communication.
An embodiment of a wireless communication device of the present invention includes a wireless transceiver, a bluetooth transceiver, and a bluetooth controller. The wireless transceiver is configured to wirelessly communicate over a wireless channel for a period of time, and operation of the wireless transceiver supports at least one wireless communication specification (e.g., at least one of a set of IEEE 802.11 specifications). The Bluetooth transceiver is used for carrying out Bluetooth communication through a plurality of Bluetooth channels in sequence in the period of time, wherein the plurality of Bluetooth channels comprise a first Bluetooth channel and a second Bluetooth channel. The Bluetooth controller is used for judging that the difference between the center frequency of the wireless channel and the center frequency of the first Bluetooth channel falls in one of N preset intervals, and controlling the Bluetooth transceiver to use one of N groups of parameters according to the difference, so that the Bluetooth transceiver can perform Bluetooth communication through the first Bluetooth channel in the period of time; the Bluetooth controller is further configured to determine that a difference between the center frequency of the wireless channel and the center frequency of the second Bluetooth channel falls within one of the N predetermined intervals, and control the Bluetooth transceiver to use one of the N sets of parameters according to the difference, so that the Bluetooth transceiver performs the Bluetooth communication through the second Bluetooth channel in the period of time. In this embodiment, the wireless transceiver and the bluetooth transceiver use the same frequency band for communication simultaneously during the period of time, and N is an integer greater than one.
The features, implementation and efficacy of the present invention are described in detail below with reference to the preferred embodiments of the present invention as shown in the accompanying drawings.
Drawings
FIG. 1 illustrates one embodiment of a wireless communication device of the present invention;
FIG. 2 is a schematic diagram showing the wireless transceiver and the Bluetooth transceiver of FIG. 1 using a wireless channel and a first Bluetooth channel, respectively, for communication;
FIG. 3 is a schematic diagram showing the wireless transceiver and the Bluetooth transceiver of FIG. 1 using a wireless channel and a second Bluetooth channel, respectively, for communication;
FIG. 4 illustrates a schematic diagram of one embodiment of the Bluetooth transceiver of FIG. 1;
FIG. 5 shows the Bluetooth signal strength when the difference between the center frequency of the wireless channel and the center frequency of the first Bluetooth channel falls within a first interval; and
Fig. 6 shows the bluetooth signal strength when the difference between the center frequency of the wireless channel and the center frequency of the first bluetooth channel falls within a second interval.
Detailed Description
The present disclosure includes a wireless communication device (e.g., mobile phone, personal computer, wearable electronic device) capable of adaptively adjusting parameters of a Bluetooth (BT) transceiver according to a center frequency difference between a wireless channel and a BT channel to increase a success rate of Bluetooth communication.
Fig. 1 shows an embodiment of a wireless communication device of the present invention. The wireless communication device 100 of fig. 1 includes a wireless transceiver 110, a bluetooth transceiver 120, and a bluetooth controller 130, wherein the wireless transceiver 110 is wirelessly connected to a wireless device (e.g., a wireless local area network (Wireless Local Area Network) device such as an Access Point (AP)) 10 via an antenna (not shown), and the bluetooth transceiver 120 is wirelessly connected to a bluetooth device (e.g., a bluetooth horn) 20 via the antenna (not shown). In the embodiment of fig. 1, the bluetooth controller 130 is integrated in the bluetooth transceiver 120, and the wireless transceiver 110, the bluetooth transceiver 120 and the bluetooth controller 130 are included in a single integrated circuit; in another embodiment, the bluetooth controller is integrated in a bluetooth transceiver, the wireless transceiver and the bluetooth transceiver being separate integrated circuits; in yet another embodiment, the Bluetooth controller is separate from the Bluetooth transceiver, and the wireless transceiver, bluetooth transceiver and Bluetooth controller are separate integrated circuits.
Referring to fig. 1-3, fig. 2 shows a schematic diagram of the wireless transceiver 110 and the bluetooth transceiver 120 of fig. 1 using the wireless channel CH WLAN and the first bluetooth channel CH BT1, respectively, and fig. 3 shows a schematic diagram of the wireless transceiver 110 and the bluetooth transceiver 120 of fig. 1 using the wireless channel CH WLAN and the second bluetooth channel CH BT2, respectively, for communication. The wireless transceiver 110 is configured to wirelessly communicate over a wireless channel CH WLAN for a period of time; the operation of the wireless transceiver 110 supports at least one wireless communication specification (e.g., at least one of a range of IEEE 802.11 specifications, such as 802.11b, 802.11g, and 802.11n, or a long Cheng Yanjin (Long Term Evolution, LTE) specification). The bluetooth communication has a frequency hopping (frequency hopping) characteristic, so that the bluetooth transceiver 120 is configured to sequentially perform bluetooth communication via a plurality of bluetooth channels during the same period of time, wherein the plurality of bluetooth channels includes a first bluetooth channel CH BT1 and a second bluetooth channel CH BT2; the characteristics of the above-mentioned frequency hopping can be found in the following documents ：Bluetooth SIG Proprietary,"Volume 1,Part A,Section 1.1,1.2and Volume 2,Part B,Section 2.6of Bluetooth Core Specification Version 5.0",Dec 06 2016.
Please refer to fig. 1-3 again. The bluetooth controller 130 is configured to determine that the difference between the center frequency of the wireless channel CH WLAN and the center frequency of the first bluetooth channel CH BT1 falls within a P-th interval of N preset intervals, and control the bluetooth transceiver 120 to use N sets of parameters (e.g., each set of parameters includes parameters of the amplification gain of the bluetooth transmitting circuit and/or parameters of the automatic gain control (Automatic Gain Control, AGC) of the bluetooth receiving circuit) according to the P-th interval, so that the bluetooth transceiver 120 performs bluetooth communication via the first bluetooth channel CH BT1 in the period of time; the bluetooth controller 130 is further configured to determine that the difference between the center frequency of the wireless channel CH WLAN and the center frequency of the second bluetooth channel CH BT2 falls within a Q-th interval of the N preset intervals, and control the bluetooth transceiver 120 to use a Y-th set of parameters of the N sets of parameters, so that the bluetooth transceiver 120 performs bluetooth communication through the second bluetooth channel CH BT2 in the period of time, wherein N is an integer greater than one (e.g., N is not less than 3), and each of the P, Q, X, Y is a positive integer not greater than N. The wireless transceiver 110 and the bluetooth transceiver 120 use the same frequency Band (e.g., the 2.4GHz Band of the ISM Band (Industrial SCIENTIFIC MEDICAL Band)) for simultaneous communication during the period, and the wireless channel CH WLAN may or may not overlap with any of the plurality of bluetooth channels.
Referring to fig. 4, the bluetooth transceiver 120 includes a bluetooth transmitting circuit 410 and a bluetooth receiving circuit 420. Referring to fig. 1,2 and 4, in controlling bluetooth transmission, when the difference between the center frequency of the wireless channel CH WLAN and the center frequency of the first bluetooth channel CH BT1 falls within a first one of the N preset intervals, the bluetooth controller 130 controls the bluetooth transceiver 120 (e.g., the bluetooth transmission circuit 410 of the bluetooth transceiver 120) to use a first one of the N sets of parameters (e.g., the amplification gain parameter of the bluetooth transmission circuit 410); When the difference between the center frequency of the wireless channel CH WLAN and the center frequency of the first bluetooth channel CH BT1 falls within a second interval of the N preset intervals, the bluetooth controller 130 controls the bluetooth transceiver 120 (e.g., the bluetooth transmitting circuit 410 of the bluetooth transceiver 120) to use a second set of parameters of the N sets of parameters (e.g., parameters of the amplification gain of the bluetooth transmitting circuit 410). The difference between any frequency in the first interval and the center frequency of the wireless channel CH WLAN is smaller than the difference between any frequency in the second interval and the center frequency of the wireless channel CH WLAN; in other words, when the difference between the center frequencies falls within the first interval and not the second interval, the center frequency of the wireless channel CH WLAN is closer to the center frequency of the first bluetooth channel CH BT1. the strength of a transmit signal of the bluetooth transceiver 120 using the first set of parameters (as shown in fig. 5, where F 1 and F 2 are frequency values used to set the first and second intervals) is less than the strength of the transmit signal of the bluetooth transceiver using the second set of parameters (as shown in fig. 6, where F 1 and F 2 are frequency values used to set the first and second intervals), Therefore, when the difference of the center frequencies falls within the first interval, the first set of parameters can prevent the bluetooth transmitting operation of the bluetooth transceiver 120 from causing excessive interference to the wireless receiving operation or the wireless transmitting operation of the wireless transceiver 110; When the difference between the center frequencies falls within the second interval, the second set of parameters can prevent the transmission signal of the bluetooth transceiver 120 from being excessively weakened, thereby increasing the reception success rate of the remote bluetooth device (which is the online object of the bluetooth transceiver 120). Referring to fig. 1,3 and 4, similarly, in controlling bluetooth transmission, the bluetooth controller 130 controls the bluetooth transceiver 120 to use one of the N sets of parameters according to the difference between the center frequency of the wireless channel CH WLAN and the center frequency of the second bluetooth channel CH BT2; Since one skilled in the art can understand how the bluetooth controller 130 controls the bluetooth transceiver 120 to use one of the N sets of parameters according to the foregoing description, the repetitive and redundant description is omitted herein. It is noted that the N sets of parameters for when bluetooth transmit operation and wireless receive operation coexist may be the same or different from the N sets of parameters for when bluetooth transmit operation and wireless transmit operation coexist. It should be noted that, although fig. 2-3 and fig. 5-6 illustrate that the center frequency of the wireless channel is greater than the center frequency of the bluetooth channel, in other embodiments, the center frequency of the bluetooth channel may be greater than the center frequency of the wireless channel; in view of the above, on the premise that the absolute value of the difference between the center frequency of the wireless channel and the center frequency of the bluetooth channel is the same, the two cases of "the center frequency of the wireless channel is greater than the center frequency of the bluetooth channel" and "the center frequency of the wireless channel is less than the center frequency of the bluetooth channel" may be determined to fall in the same or different intervals of the N preset intervals according to implementation requirements, so as to employ the same or different sets of parameters.
Referring to fig. 1,2 and 4, in controlling bluetooth reception, when the difference between the center frequency of the wireless channel CH WLAN and the center frequency of the first bluetooth channel CH BT1 falls within a first one of the N preset intervals, the bluetooth controller 130 controls the bluetooth transceiver 120 (e.g., the bluetooth receiving circuit 420 of the bluetooth transceiver 120) to use a first one of the N sets of parameters (e.g., the parameters of the automatic gain control of the bluetooth receiving circuit 420); When the difference between the center frequency of the wireless channel CH WLAN and the center frequency of the first bluetooth channel CH BT1 falls within a second interval of the N preset intervals, the bluetooth controller 130 controls the bluetooth transceiver 120 (e.g., the bluetooth receiving circuit 420 of the bluetooth transceiver 120) to use a second set of parameters of the N sets of parameters (e.g., parameters of automatic gain control of the bluetooth receiving circuit 420). The difference between any frequency in the first interval and the center frequency of the wireless channel CH WLAN is smaller than the difference between any frequency in the second interval and the center frequency of the wireless channel CH WLAN; in other words, when the difference between the center frequencies falls within the first interval and not the second interval, the center frequency of the wireless channel CH WLAN is closer to the center frequency of the first bluetooth channel CH BT1. The amplification gain of a received signal of the bluetooth transceiver 120 using the first set of parameters is smaller than the amplification gain of the received signal of the bluetooth transceiver 120 using the second set of parameters, so that when the difference of the center frequencies falls within the first interval, the use of the first set of parameters can prevent the sensitivity of the bluetooth receiving operation of the bluetooth transceiver 120 from being too high, thereby preventing the signal interference resulting from the wireless transmitting operation of the wireless transceiver 110 from being excessively amplified; when the difference between the center frequencies falls within the second interval, the second set of parameters can prevent the sensitivity of the bluetooth receiving operation of the bluetooth transceiver 120 from being too low, so as to increase the receiving success rate of the bluetooth transceiver 120. Referring to fig. 1, 3 and 4, similarly, in controlling bluetooth reception, the bluetooth controller 130 similarly controls the bluetooth transceiver 120 to use one of the N sets of parameters according to the difference between the center frequency of the wireless channel CH WLAN and the center frequency of the second bluetooth channel CH BT2; since one skilled in the art can understand how the bluetooth controller 130 controls the bluetooth transceiver to use one of the N sets of parameters according to the foregoing description, duplicate and redundant descriptions are omitted herein. It is noted that the N sets of parameters used when bluetooth receive operation and wireless transmit operation coexist may be the same or different than the N sets of parameters used when bluetooth transmit operation and wireless transmit (or receive) operation coexist.
It is noted that the exchange of the operation states (including the center frequency of the channel) of the bluetooth transceiver 120 and the wireless transceiver 110 is known in the art (e.g., applicant's chinese patent application (application number: 107100083)), the operation states are known in a firmware communication or hardware communication manner, or the channels used by the wireless transceiver 110 are known in a detection manner, and details thereof are omitted herein. It should be noted that, in the foregoing embodiment, the wireless transceiver 110 is usually in communication with the wireless device 10 via the same wireless channel CH WLAN during the period of time, because the wireless transceiver 110 does not change channels constantly in a stable wireless connection environment to communicate with the same wireless device 10; however, even if the wireless transceiver 110 communicates with the wireless device 10 via the wireless channel CH WLAN and then communicates with the wireless device 10 via another wireless channel during the period, the bluetooth controller 130 still controls the bluetooth transceiver 120 according to the center frequency of the original wireless channel CH WLAN during the period without considering the center frequency of the another wireless channel, and then the bluetooth controller 130 receives the update information of the communication channel between the wireless transceiver 110 and the wireless device 10, and the bluetooth controller 130 controls the bluetooth transceiver 120 according to the update information.
It should be noted that, where possible, one skilled in the art may selectively implement some or all of the features of any one of the embodiments described above, or may selectively implement some or all of the features of any one of the embodiments described above, thereby increasing the flexibility in implementing the invention.
In summary, the present invention can adaptively adjust the parameters of the BT transceiver according to the difference between the center frequencies of a wireless channel and a bluetooth channel, so that the present invention can reduce the interference to the communication of the wlan and increase the success rate of bluetooth communication.
Although the embodiments of the present invention have been described above, these embodiments are not intended to limit the present invention, and those skilled in the art may make various changes to the technical features of the present invention according to the explicit or implicit disclosure of the present invention, and all such changes may be made within the scope of the present invention, that is, the scope of the present invention shall be defined by the claims of the present invention.
[ Symbolic description ]
100. Wireless communication device
110. Wireless transceiver
120. Bluetooth transceiver
130. Bluetooth controller
10. Wireless device
20. Bluetooth device
CH WLAN radio channel
CH BT1 first Bluetooth channel
CH BT2 second Bluetooth channel
410. Bluetooth transmitting circuit
420. Bluetooth receiving circuit
F 1、F2 frequency value.
Claims (10)
1. A wireless communications device, comprising:
A wireless transceiver for wirelessly communicating over a wireless channel for a period of time, the operation of the wireless transceiver supporting at least one wireless communication specification;
A bluetooth transceiver for sequentially performing bluetooth communication via a plurality of bluetooth channels during the period of time, wherein the plurality of bluetooth channels includes a first bluetooth channel and a second bluetooth channel; and
A Bluetooth controller for judging that the difference between the center frequency of the wireless channel and the center frequency of the first Bluetooth channel falls in one of N preset intervals, and controlling the Bluetooth transceiver to use one of N groups of parameters according to the difference so as to enable the Bluetooth transceiver to conduct Bluetooth communication through the first Bluetooth channel in the period of time, and also judging that the difference between the center frequency of the wireless channel and the center frequency of the second Bluetooth channel falls in one of N preset intervals according to the difference, and controlling the Bluetooth transceiver to use one of N groups of parameters so as to enable the Bluetooth transceiver to conduct Bluetooth communication through the second Bluetooth channel in the period of time,
Wherein the wireless transceiver and the Bluetooth transceiver use the same frequency band for communication simultaneously during the period of time, the N is an integer greater than one,
The wireless transceiver communicates with the wireless communication device through the wireless channel in the period of time, and then communicates with the wireless communication device through another wireless channel; wherein the Bluetooth controller controls the Bluetooth transceiver according to the center frequency of the wireless channel in the period of time without considering the center frequency of the other wireless channel; after the period of time, the Bluetooth controller receives updated information of a communication channel between the wireless transceiver and the wireless communication device, and the Bluetooth controller controls the Bluetooth transceiver according to the updated information.
2. The wireless communication device of claim 1, wherein the bluetooth controller controls the bluetooth transceiver to use a first set of the N sets of parameters when the difference between the center frequency of the wireless channel and the center frequency of the first bluetooth channel falls within a first one of the N preset intervals, and controls the bluetooth transceiver to use a second one of the N sets of parameters when the difference between the center frequency of the wireless channel and the center frequency of the first bluetooth channel falls within a second one of the N preset intervals; the difference between any frequency in the first interval and the center frequency of the wireless channel is smaller than the difference between any frequency in the second interval and the center frequency of the wireless channel; a strength of a transmit signal of the Bluetooth transceiver using the first set of parameters is less than a strength of the transmit signal of the Bluetooth transceiver using the second set of parameters.
3. The wireless communication device of claim 2, wherein the bluetooth transceiver comprises:
A bluetooth transmitting circuit, wherein when the difference between the center frequency of the wireless channel and the center frequency of the first bluetooth channel falls within the first interval and the wireless transceiver performs a wireless receiving operation and the bluetooth transceiver performs a bluetooth transmitting operation, the bluetooth controller controls the bluetooth transmitting circuit to adjust the strength of the transmitting signal using the first set of parameters; when the difference between the center frequency of the wireless channel and the center frequency of the first Bluetooth channel falls in the second interval, and the wireless transceiver performs the wireless receiving operation and the Bluetooth transceiver performs the Bluetooth transmitting operation, the Bluetooth controller controls the Bluetooth transmitting circuit to adjust the strength of the transmitting signal by using the second set of parameters.
4. The wireless communication device of claim 2, wherein the bluetooth transceiver comprises:
A bluetooth transmitting circuit, wherein when the difference between the center frequency of the wireless channel and the center frequency of the first bluetooth channel falls within the first interval and the wireless transceiver performs a wireless transmitting operation and the bluetooth transceiver performs a bluetooth transmitting operation, the bluetooth controller controls the bluetooth transmitting circuit to adjust the strength of the transmitting signal using the first set of parameters; when the difference between the center frequency of the wireless channel and the center frequency of the first Bluetooth channel falls in the second interval, and the wireless transceiver performs the wireless transmission operation and the Bluetooth transceiver performs the Bluetooth transmission operation, the Bluetooth controller controls the Bluetooth transmission circuit to adjust the strength of the transmission signal by using the second set of parameters.
5. The wireless communication device of claim 1, wherein the bluetooth controller controls the bluetooth transceiver to use a first set of the N sets of parameters when the difference between the center frequency of the wireless channel and the center frequency of the first bluetooth channel falls within a first one of the N preset intervals, and controls the bluetooth transceiver to use a second one of the N sets of parameters when the difference between the center frequency of the wireless channel and the center frequency of the first bluetooth channel falls within a second one of the N preset intervals; the difference between any frequency in the first interval and the center frequency of the wireless channel is smaller than the difference between any frequency in the second interval and the center frequency of the wireless channel; an amplification gain of a received signal of the Bluetooth transceiver using the first set of parameters is less than an amplification gain of the received signal of the Bluetooth transceiver using the second set of parameters.
6. The wireless communication device of claim 5, wherein the bluetooth transceiver comprises:
a bluetooth receiving circuit, wherein when the difference between the center frequency of the wireless channel and the center frequency of the first bluetooth channel falls within the first interval, and the wireless transceiver performs a wireless transmitting operation and the bluetooth transceiver performs a bluetooth receiving operation, the bluetooth controller controls the bluetooth receiving circuit to adjust the amplification gain of the received signal using the first set of parameters; when the difference between the center frequency of the wireless channel and the center frequency of the first Bluetooth channel falls in the second interval, and the wireless transceiver performs the wireless transmission operation and the Bluetooth transceiver performs the Bluetooth receiving operation, the Bluetooth controller controls the Bluetooth receiving circuit to adjust the amplification gain of the received signal by using the second set of parameters.
7. The wireless communication device of claim 1, wherein the same frequency band is the 2.4GHz band of the ISM band.
8. The wireless communication device of claim 1, wherein each of the N sets of parameters comprises at least one of: a parameter of amplification gain of a Bluetooth transmission circuit of the Bluetooth transceiver; and parameters for automatic gain control of a Bluetooth receiving circuit of the Bluetooth transceiver.
9. The wireless communication device of claim 1, wherein the wireless transceiver, the bluetooth transceiver, and the bluetooth controller are included in an integrated circuit.
10. The wireless communication device of claim 1, wherein the N is an integer not less than three.
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