CN115250129A - wireless communication chip - Google Patents

Abstract

The invention discloses a wireless communication chip, which comprises an analog front-end circuit and a baseband circuit, wherein the analog front-end circuit comprises a first transceiver circuit and a second transceiver circuit, the first transceiver circuit is used for transmitting or receiving signals through a first antenna, and the second transceiver circuit is used for transmitting or receiving signals through a second antenna. The baseband circuit is used for controlling the first transceiver circuit to communicate by using a first frequency band or a second frequency band, and/or controlling the second transceiver circuit to communicate by using the first frequency band or the second frequency band; the baseband circuit controls the first transceiver circuit and the second transceiver circuit so that the analog front-end circuit alternately performs dual-antenna transmission and reception of the first frequency band and dual-antenna transmission and reception of the second frequency band.

Description

wireless communication chip

technical field

The present invention relates to a wireless communication chip.

current technology

For an access point (access point) or a router (router) that supports two transmit and two receive paths (2T2R) simultaneously with tri-band (Tri-band), a common feasible solution is to use a four-chip system architecture , that is, the system architecture includes a core computing chip (such as a central processing unit (CPU)), a wireless communication chip in the 2.4 GHz (GigaHertz, GHz) frequency band, a wireless communication chip in the 5 GHz frequency band, and a Wireless communication chips in the 6GHz band, and each wireless communication chip includes two antennas, and can independently transmit and receive data.

However, since the cost of designing and manufacturing four chips is too high, the cost can be effectively reduced if some chips can be integrated. However, with the popularization of the sixth-generation Wi-Fi technology and Wi-Fi 6e technology, more and more workstations have a 2*2 antenna structure to send and receive data from two spatial streams. In order to increase the amount of data transmitted and received and reduce the data transmission time. Therefore, how to design a single chip that can operate in two different frequency bands at the same time, and the chip can achieve dual-antenna transmission and reception, is an important issue.

SUMMARY OF THE INVENTION

Therefore, one of the objectives of the present invention is to provide a wireless communication chip, which can support dual-antenna transmission and reception functions in both the 5GHz frequency band and the 6GHz frequency band, so as to solve the problems in the prior art.

In one embodiment of the present invention, a wireless communication chip is disclosed, which includes an analog front-end circuit and a baseband circuit, wherein the analog front-end circuit includes a first transceiver circuit and a second transceiver circuit, the first transceiver circuit It is used for transmitting or receiving signals through the first antenna, and the second transceiver circuit is used for transmitting or receiving signals through the second antenna. The baseband circuit is used to control the first transceiver circuit to use the first frequency band or the second frequency band to communicate, and/or to control the second transceiver circuit to use the first frequency band or the second frequency band to communicate; wherein the baseband circuit The frequency circuit controls the first transceiver circuit and the second transceiver circuit, so that the analog front end circuit alternately performs dual-antenna transmission and reception of the first frequency band and dual-antenna transmission and reception of the second frequency band.

In another embodiment of the present invention, a wireless communication chip is disclosed, which includes an analog front-end circuit and a baseband circuit, wherein the analog front-end circuit includes a first transceiver circuit and a second transceiver circuit, the first transceiver circuit The circuit is used for transmitting or receiving signals through the first antenna, and the second transceiver circuit is used for transmitting or receiving signals through the second antenna. The baseband circuit is used to control the first transceiver circuit to use the first frequency band or the second frequency band to communicate, and/or to control the second transceiver circuit to use the first frequency band or the second frequency band to communicate; wherein the baseband circuit The frequency circuit controls the first transceiver circuit and the second transceiver circuit, so that the first transceiver circuit uses a single antenna to transmit and receive in the first frequency band, and the second transceiver circuit uses a single antenna to transmit and receive in the second frequency band ; and when the analog front-end circuit and the baseband circuit receive a specific packet indicating that there is a need for dual-antenna transmission and reception, the baseband circuit controls the first transceiver circuit and the second transceiver circuit, so that the first transceiver circuit Using dual antennas to transmit and receive with the second transceiver circuit in the first frequency band or the second frequency band.

Description of drawings

FIG. 1 is a schematic diagram of a chipset according to one embodiment of the present invention.

FIG. 2 is a schematic diagram of a wireless communication chip according to an embodiment of the present invention.

FIG. 3 is a schematic diagram of the operation of a wireless communication chip according to an embodiment of the present invention.

FIG. 4 is a schematic diagram of the operation of a wireless communication chip according to another embodiment of the present invention.

FIG. 5 is an operation flowchart of a wireless communication chip according to an embodiment of the present invention.

FIG. 6 is a schematic diagram of a plurality of fields included in a packet.

FIG. 7 is a schematic diagram of the operation of a wireless communication chip according to another embodiment of the present invention.

FIG. 8 is a flowchart of an operation of a wireless communication chip according to an embodiment of the present invention.

FIG. 9 is an operation sequence diagram of the station when the access point switches the frequency band.

Detailed ways

FIG. 1 is a schematic diagram of a chipset 100 according to an embodiment of the present invention, wherein the chipset 100 may be installed in an access point or router that simultaneously supports Tri-band dual-antenna transmission and reception (2T2R). As shown in FIG. 1 , the chipset 100 includes a processor 110 and two wireless communication chips 120 and 130 , wherein the wireless communication chip 120 is a wireless communication chip in the 2.4GHz frequency band, that is, the wireless communication chip 120 can use a frequency range between Signal transmission and reception are performed on channels within 2.412GHz to 2.484GHz; and the wireless communication chip 120 is a wireless communication chip that supports both the 5GHz frequency band and the 6GHz frequency band, that is, the wireless communication chip 120 can use a frequency range of 4.915GHz to 5.825 GHz. The channels within GHz and 5.925GHz to 7.125GHz transmit and receive signals. In addition, each of the wireless communication chips 120, 130 is connected to at least two antennas for signal transmission and reception.

FIG. 2 is a schematic diagram of a wireless communication chip 130 according to an embodiment of the present invention. As shown in FIG. 2 , the wireless communication chip 130 includes an analog front-end circuit 210, a baseband circuit 220, a Media Access Control (MAC) circuit 230 and an interface circuit 240, wherein the analog front-end circuit 210 includes two transceiver circuits 212, 214 and two frequency synthesizers 216, 218. In the embodiment of FIG. 2 , the transceiver circuit 212 is connected to an antenna, and can transmit and receive signals through the antenna, while the transceiver circuit 214 is connected to another antenna to transmit and receive signals through the other antenna . Each of the transceiver circuits 212, 214 may include filter, mixer, amplifier, . It is well known to those skilled in the art, and the focus of this embodiment lies in the frequencies of the signals transmitted or received by the frequency synthesizers 216 , 218 and the transceiver circuits 212 , 214 , so the related circuit details of the transceiver circuits 212 , 214 are not repeated. The frequency synthesizer 216 is used to generate the clock pulse signal CLK1 to the mixer in the transceiver circuit 212, and the clock pulse signal CLK1 may have different frequencies according to the currently used channel, such as a channel in the 5GHz frequency band and a channel in the 6GHz frequency band. Frequency; the frequency synthesizer 218 is used to generate the clock pulse signal CLK2 to the mixer in the transceiver circuit 214, and the clock pulse signal CLK2 can have different frequencies according to the currently used channel, such as one of the 5GHz frequency band and the 6GHz frequency band channel frequency. In another embodiment, the clock pulse signal CLK1 generated by the frequency synthesizer 216 can also be used by the mixer in the transceiver circuit 214, and/or the clock pulse signal CLK2 generated by the frequency synthesizer 218 can also be used by the transceiver circuit The mixer in 212 is used.

In addition, the baseband circuit 220 and the medium access control circuit 230 are respectively used for processing the baseband signal and related processing of the medium access control, and the interface circuit 240 is connected to the processor 110 as an interface for mutual data transmission. In addition, since the frequency synthesizers 216 and 218 of this embodiment can operate in the 5 GHz frequency band and the 6 GHz frequency band to perform dual-band concurrent (DBCC), the baseband circuit 220 and the medium access control circuit 230 include related circuit to cooperate with the function of enabling or disabling the DBCC. On the other hand, since other operations of the baseband circuit 220 , the medium access control circuit 230 and the interface circuit 240 are well known to those skilled in the art, the relevant details are not repeated here.

On the other hand, the circuit architecture of the wireless communication chip 120 is similar to the architecture of the wireless communication chip 130 shown in FIG. 2 , the only difference being that only one frequency synthesizer can be included to generate the frequency of one channel in the 2.4GHz frequency band for two A transceiver circuit is used.

In the operation of the chipset 100, in order to use the three frequency bands to communicate with the station, in one embodiment, the wireless communication chip 130 uses Time Division Multiple Access (TDMA) technology to use different time A time slot is used to transmit data in the 5GHz frequency band and the 6GHz frequency band, so that a single wireless communication chip 130 can simultaneously support dual-antenna transmission and reception in the 5GHz frequency band and the 6GHz frequency band. Specifically, referring to the schematic operation diagram of the wireless communication chips 120 and 130 shown in FIG. 3 , it is assumed in FIG. 3 that the chipset 100 needs to send a beacon every 100 milliseconds (millisecond, ms) to inform the existence of the relevant channel That is, if the chipset 100 needs to support three frequency bands at the same time, it needs to send a 2.4GHz frequency band beacon, a 5GHz frequency band beacon and a 6GHz frequency band beacon every 100 milliseconds. At time t1 in FIG. 3 , the wireless communication chip 120 transmits a 2.4GHz band beacon, and can use dual-antenna transmission and reception to communicate with one or more workstations in the next time slot (t1-t3); at the same time, the wireless communication The communication chip 130 transmits a 5GHz frequency band beacon, and can communicate with one or more workstations using dual-antenna transmission and reception in the next time slot (t1-t2). At time t2, the wireless communication chip 130 transmits a 6GHz frequency band beacon, and can use dual-antenna transmission and reception to communicate with one or more workstations in the next time slot (t2-t3), and at this time the wireless communication chip 120 There is no need to send 2.4GHz band beacons. At time t3, the wireless communication chip 120 transmits a beacon in the 2.4 GHz frequency band, and can use dual antenna transmission and reception to communicate with one or more workstations in the next time slot (t3-t5); at the same time, the wireless communication chip 130 A 5GHz band beacon is sent and during the following time slots (t3-t4) dual antenna transmission and reception can be used to communicate with one or more workstations. At time t4, the wireless communication chip 130 transmits a 6GHz frequency band beacon, and can use dual antenna transmission and reception to communicate with one or more workstations in the next time slot (t4-t5), while the wireless communication chip 120 at this time There is no need to send 2.4GHz band beacons. At time t5, the wireless communication chip 120 transmits a 2.4GHz frequency band beacon, and can use dual antenna transmission and reception to communicate with one or more workstations in the next time slot; at the same time, the wireless communication chip 130 transmits a 5GHz frequency band beacon , and can use dual-antenna transmission and reception to communicate with one or more workstations in the next time slot (t5-t6).

In the embodiment shown in FIG. 3 , by shortening the time slot of the wireless communication chip 130 , for example, the time length of each time slot in the wireless communication chip 130 is 50 milliseconds, which is the time of each time slot in the wireless communication chip 130 . Half of the length allows the wireless communication chip 130 to switch the frequency band every 50 milliseconds, and the transmission interval of the 5GHz frequency band beacon and the 6GHz frequency band beacon can also conform to the content of the specification. Therefore, the workstation using the 5GHz frequency band and the workstation using the 6GHz frequency band can perform dual-antenna transmission and reception in the corresponding time slot, and in this way, the dual-antenna of the 5GHz frequency band and the 6GHz frequency band can be simultaneously supported in the case of using a single wireless communication chip 130 . Send and receive.

In addition, at times t1, t3, and t5 in FIG. 3, the frequency synthesizer 216 can generate the clock pulse signal CLK1 corresponding to the 5GHz frequency band to the transceiver circuit 212, and the frequency synthesizer 218 can generate the clock pulse signal CLK2 corresponding to the 5GHz frequency band to the transceiver circuit 214; or the frequency synthesizer 216 can generate the clock pulse signal CLK1 corresponding to the 5GHz frequency band to the transceiver circuits 212, 214; or the frequency synthesizer 218 can generate the clock pulse signal CLK2 corresponding to the 5GHz frequency band to the transceiver circuit 212 , 214. In addition, at times t2 and t4 in FIG. 3 , the frequency synthesizer 216 can generate the clock pulse signal CLK1 corresponding to the 6GHz frequency band to the transceiver circuit 212 , and the frequency synthesizer 218 can generate the clock pulse signal CLK2 corresponding to the 6GHz frequency band to the transceiver circuit 212 . The circuit 214; or the frequency synthesizer 216 can generate the clock pulse signal CLK1 corresponding to the 6GHz frequency band to the transceiver circuits 212, 214; or the frequency synthesizer 218 can generate the clock pulse signal CLK2 corresponding to the 6GHz frequency band to the transceiver circuits 212, 214 . These design changes should fall within the scope of the present invention.

In another embodiment of the present invention, the baseband circuit 220 and the medium access control circuit 230 in the wireless communication chip 130 can enable the DBCC function in advance, and perform single-antenna transmission and reception (1T1R) for the 5GHz frequency band and the 6GHz frequency band, At this time, the frequency synthesizer 216 can generate the clock pulse signal CLK1 corresponding to the 5GHz frequency band to the transceiver circuit 212 , and the frequency synthesizer 218 can generate the clock pulse signal CLK2 corresponding to the 6GHz frequency band to the transceiver circuit 214 . If the wireless communication chip 130 is connected to a workstation that requires dual antenna transmission and reception, and the workstation needs to use dual antennas for uplink data transmission, the baseband circuit 220 and the media access control circuit 230 will be turned off. DBCC function, and perform fast band switching, so that the frequency synthesizers 216, 218 both generate clock pulse signals CLK1, CLK2 corresponding to the 5GHz frequency band to the transceiver circuits 212, 214, or the frequency synthesizers 216, 218 Both generate clock pulse signals CLK1 and CLK2 corresponding to the 6GHz frequency band to the transceiver circuits 212 and 214 . Specifically, referring to the schematic operation diagram of the wireless communication chips 120 and 130 shown in FIG. 4 , it is assumed that the chipset 100 needs to send a beacon every 100 milliseconds to notify the existence of the relevant channel. At time t1 in FIG. 4 , the wireless communication chip 120 transmits a 2.4GHz frequency band beacon, and communicates with one or more workstations using dual-antenna transmission and reception in the next time slot (t1-t2). The communication chip 130 enables the DBCC function, transmits the 5GHz band beacon and the 6GHz band beacon, and can communicate with one or more workstations using single-antenna transmission and reception in the next time slot (t1-t2). At time t2, the wireless communication chip 120 transmits a 2.4GHz frequency band beacon, and can use dual antenna transmission and reception to communicate with one or more workstations in the next time slot (t2-t3); at the same time, the wireless communication chip 130 The 5GHz band beacon and the 6GHz band beacon are sent, and in the following time slots (t2-t3), single antenna transmission and reception can be used to communicate with one or more workstations. At time t3, the wireless communication chip 130 receives a specific packet from the workstation to inform the workstation that the baseband circuit 220 and the medium access control circuit 230 will be turned off when the workstation needs to use dual antennas for uplink data transmission in the 6GHz frequency band. The DBCC function performs fast band switching, and controls the frequency synthesizers 216 and 218 to generate clock pulse signals CLK1 and CLK2 corresponding to the 6GHz frequency band to the transceiver circuits 212 and 214 . That is, the wireless communication chip 120 transmits the 2.4GHz frequency band beacon, and can use dual antenna transmission and reception to communicate with one or more workstations in the next time slot (t3-t4); at the same time, the wireless communication chip 130 sends 6GHz band beacon, and can use dual-antenna transmission and reception to communicate with one or more workstations in the next time slot (t3-t4), at this time, the wireless communication chip 130 cannot use the 5GHz band to communicate with other workstations . At time t4, if the data transmitted and received by using the dual antennas at the 6GHz frequency has been transmitted, the baseband circuit 220 and the medium access control circuit 230 will activate the DBCC function again, that is, the frequency synthesizer 216 is controlled to generate a frequency corresponding to the 5GHz frequency band. The clock pulse signal CLK1 is sent to the transceiver circuit 212 , and the frequency synthesizer 218 generates a clock pulse signal CLK2 corresponding to the 6GHz frequency band to the transceiver circuit 214 . At this time, the wireless communication chip 120 sends a 2.4GHz frequency band beacon, and can use dual antenna transmission and reception to communicate with one or more workstations in the next time slot; at the same time, the wireless communication chip 130 sends a 5GHz frequency band beacon and 6GHz band beacon and can communicate with one or more workstations using a single antenna transmit and receive in the following time slot.

In the embodiment shown in FIG. 4 , the data of the 5GHz band and the 6GHz band are transmitted and received through a single antenna in the default state, so as to achieve the purpose of operating in the three frequency bands at the same time, and when a workstation needs to use the 5GHz band or When dual-antenna transmission and reception is performed in the 6GHz band, fast frequency band switching is performed to perform dual-antenna transmission and reception. Therefore, the workstations using the 5GHz frequency band and the workstations using the 6GHz frequency band can perform single-antenna transmission and reception or dual-antenna transmission and reception as required, and in this way, the 5GHz frequency band and the 6GHz frequency band can be simultaneously supported under the condition of using a single wireless communication chip 130 . dual-antenna transmission and reception.

In the embodiment of FIG. 4, the fast band switching described at time t3 needs to take into account whether the 5GHz band is idle (ie, no other workstations are using the 5GHz band to communicate with the chipset 100), and if the 5GHz band is In a busy state, fast frequency band switching cannot be performed at this time, so that the wireless communication chip 130 cannot use dual antennas for transmission and reception in the 6GHz frequency band.

FIG. 5 is an operation flowchart of the wireless communication chip 130 according to an embodiment of the present invention. Referring to the contents disclosed in the embodiments of FIG. 1 , FIG. 2 and FIG. 4 , the operation flow is as follows.

Step 500: The process starts.

Step 502: The wireless communication chip performs single-antenna transmission and reception in the 5GHz frequency band and the 6GHz frequency band, respectively.

Step 504: Determine whether a specific packet is received, wherein the specific packet indicates that the 5GHz frequency band or the 6GHz frequency band needs to be used for dual-antenna transmission and reception. If yes, the flow goes to step 506 ; if no, the flow returns to step 502 .

Step 506 : Determine whether another frequency band that does not require dual-antenna transmission and reception is in an idle state, if yes, the process goes to Step 508 ; if not, the process returns to Step 502 .

Step 508: Perform fast band switching.

Step 510: Use the 5GHz frequency band or the 6GHz frequency band for dual-antenna transmission and reception.

Step 512 : Determine whether the data transmission for dual-antenna transmission and reception is completed, if yes, the process goes to Step 514 ; if not, the process returns to Step 510 .

Step 514 : the wireless communication chip switches back to performing single-antenna transmission and reception in the 5GHz frequency band and the 6GHz frequency band, respectively.

In the embodiments shown in FIG. 4 and FIG. 5 , the wireless communication chip 130 can determine whether a workstation needs to use dual antennas for uplink data transmission through the content of the received packet. Taking FIG. 6 as an example, part of the content of the packet 600 is described, wherein the packet 600 is a High-Efficiency Single-user Physical Protocol Data Unit (HE SU PPDU), and the packet 600 includes a plurality of Fields, in order, are the L-STF field with a duration of 8 microseconds (microsecond, us), the L-LTF field with a duration of 8 microseconds, the L-SIG field with a duration of 4 microseconds, and the RL field with a duration of 4 microseconds -SIG field, HE-SIG-A field of duration 8 microseconds, HE-STF field of duration 4 microseconds, HE-LTF field...etc. The content of each field of the packet 600 can refer to related specifications, so details are not repeated here. In this embodiment, the baseband circuit 220 in the wireless communication chip 130 can determine whether the station transmitting the packet 600 needs to use the 5GHz frequency band or the 6GHz frequency band for dual-antenna transmission by analyzing the content in the HE-SIG-A field received, and fast channel switching can be done within the time frame of the HE-STF field. In the process of fast channel switching, first the baseband circuit 220 notifies the analog front-end circuit 210 to switch the frequency of the frequency synthesizer. For the embodiment of FIG. 4 , the baseband circuit 220 notifies the frequency synthesizer 216 to convert the clock pulse The frequency of the signal CLK1 is switched to the frequency band of 6 GHz; then, the fundamental frequency circuit 220 measures the gain and frequency of the transceiver circuit 212, and performs automatic gain control, coarse/fine frequency adjustment, time synchronization, etc. Operation; finally, the baseband circuit 220 updates the relevant parameters according to the above operation, and starts to perform dual-antenna transmission and reception.

In the embodiment of FIG. 3 , the wireless communication chip 130 uses the time division multiple access method to achieve the purpose of simultaneously supporting dual-antenna transmission and reception in the 5 GHz frequency band and the 6 GHz frequency band. In the embodiments of FIG. 4 and FIG. 5 , the wireless communication chip 130 utilizes fast band switching to provide dual-antenna transmission and reception in either the 5GHz band or the 6GHz band when needed. However, in another embodiment of the present invention, the above-mentioned time division multiple access and fast band switching can also be used in combination. Specifically, referring to the schematic diagram of the operation of the wireless communication chips 120 and 130 shown in FIG. 7 , in FIG. 7 it is assumed that the chipset 100 needs to send a beacon every 100 milliseconds to notify the existence of the relevant channel, that is, if the chipset 100 To support three frequency bands simultaneously, a 2.4GHz band beacon, a 5GHz band beacon and a 6GHz band beacon need to be sent every 100 milliseconds. At time t1 in FIG. 7 , the wireless communication chip 120 transmits a beacon in the 2.4 GHz frequency band, and can use dual-antenna transmission and reception to communicate with one or more workstations in the next time slot (t1-t3); at the same time, the wireless communication The communication chip 130 enables the DBCC function, transmits the 5GHz band beacon and the 6GHz band beacon, and can communicate with one or more workstations using single-antenna transmission and reception in the next time slot (t1-t2). At time t2, the wireless communication chip 120 can continue to perform dual-antenna transmission and reception, while the wireless communication chip 130 turns off the DBCC function, and controls the frequency synthesizers 216 and 218 to generate the clock pulse signals CLK1 and CLK2 in the 5GHz frequency band, so that at the next time During the time slots (t2-t3), dual-antenna transmission and reception can be used to communicate with one or more workstations. At this time, the wireless communication chip 130 cannot use the 6GHz frequency band to communicate with other workstations. At time t3, the wireless communication chip 120 transmits a beacon in the 2.4 GHz frequency band, and can use dual antenna transmission and reception to communicate with one or more workstations in the next time slot (t3-t5); at the same time, the wireless communication chip 130 The DBCC function is activated, and the 5GHz band beacon and the 6GHz band beacon are sent, and the single-antenna transmission and reception can be used to communicate with one or more workstations in the next time slot (t3-t4). At time t4, the wireless communication chip 120 can continue to perform dual-antenna transmission and reception, while the wireless communication chip 130 turns off the DBCC function, and controls the frequency synthesizers 216 and 218 to generate the clock pulse signals CLK1 and CLK2 in the 6 GHz frequency band, so that at the next time During the time slots (t4-t5), dual-antenna transmission and reception can be used to communicate with one or more workstations. At this time, the wireless communication chip 130 cannot use the 5GHz frequency band to communicate with other workstations.

In the embodiment shown in FIG. 7, at times t1 and t3, the frequency synthesizer 216 can generate the clock pulse signal CLK1 corresponding to the 5GHz frequency band to the transceiver circuit 212, and the frequency synthesizer 218 can generate the clock pulse corresponding to the 6GHz frequency band Signal CLK2 to the transceiver circuit 214; at time t2, the frequency synthesizer 216 can continue to generate the clock pulse signal CLK1 corresponding to the 5GHz frequency band to the transceiver circuit 212, while the frequency synthesizer 218 needs to switch to generate the clock pulse signal CLK2 corresponding to the 5GHz frequency band to the transceiver circuit 214; and at time t4, the frequency synthesizer 216 needs to switch to generate the clock pulse signal CLK1 corresponding to the 6GHz frequency band to the transceiver circuit 212, while the frequency synthesizer 218 continues to generate the clock pulse signal CLK2 corresponding to the 6GHz frequency band to Transceiver circuit 214 .

It should be noted that, at times t1 and t3, if the wireless communication chip 130 receives a specific packet from the workstation to inform the workstation that it needs to use dual antennas in the 5GHz frequency band or the 6GHz frequency band for uplink data transmission, and When the other channel is also in an idle state, the baseband circuit 220 and the media access control circuit 230 can turn off the DBCC function, perform fast frequency band switching, and control the frequency synthesizers 216 and 218 to generate a frequency corresponding to the 5GHz frequency band or the 6GHz frequency band. The clock pulse signals CLK1 and CLK2 of the frequency band are sent to the transceiver circuits 212 and 214 . As mentioned above, for workstations that need to use the 5GHz frequency band and need to perform dual-antenna transmission and reception, they can have the opportunity to achieve dual-antenna transmission and reception in time slots (t1 ~ t2) and (t3 ~ t4), and can ensure that in the time slot. Do dual-antenna transmission and reception in (t2~t3); similarly, for workstations that need to use 6GHz frequency band and need dual-antenna transmission and reception, you can have the opportunity to achieve dual-antenna transmission and reception in time slots (t1~t2) and (t3~t4). The antenna transmits and receives, and it can ensure that the dual-antenna transmits and receives in the time slot (t4-t5).

In addition, in the embodiment of FIG. 7 , it is assumed that the wireless communication chip 130 is using the 5GHz frequency band to communicate with the first station, and uses the 6GHz frequency band to communicate with the second station. In t4), the wireless communication chip 130 can use a single antenna to transmit data to the first workstation and the second workstation respectively, and can use dual antennas to transmit a large amount of data to the first workstation in the time slot (t2-t3), and in the time slot (t4) ~t5) Use dual antennas to transmit a large amount of data to the second workstation. Therefore, the data transfer time can be greatly shortened.

In another embodiment, if the wireless communication chip 130 finds that the 5GHz frequency band does not need to be used for communication at time t2, the DBCC function can be restarted at time t2, and the single frequency band can be used in the next time slot (t2-t3). The antenna transmits and receives to communicate with other workstations.

FIG. 8 is an operation flowchart of the wireless communication chip 130 according to an embodiment of the present invention. Referring to the contents disclosed in the embodiments of FIG. 1 , FIG. 7 and FIG. 8 , the operation flow is as follows.

Step 800: The process starts.

Step 802: The wireless communication chip performs single-antenna transmission and reception in the 5GHz frequency band and the 6GHz frequency band, respectively.

Step 804: Determine whether a specific packet is received, wherein the specific packet indicates that the 5GHz frequency band or the 6GHz frequency band needs to be used for dual-antenna transmission and reception. If yes, the flow goes to step 806 ; if no, the flow returns to step 802 .

Step 806 : Determine whether another frequency band that does not require dual-antenna transmission and reception is in an idle state, if yes, the flow goes to Step 808 ;

Step 808: Perform fast band switching.

Step 810: Use the 5GHz frequency band or the 6GHz frequency band for dual-antenna transmission and reception.

Step 812 : Determine whether the data transmission for dual-antenna transmission and reception is completed. If yes, the process returns to step 802 ; if not, the process returns to step 810 .

Step 814 : Determine whether the time slot for dual-antenna transmission and reception has been reached. If yes, the flow goes to Step 816 ; if not, the flow returns to Step 802 .

Step 816: Use the 5GHz frequency band or the 6GHz frequency band for dual-antenna transmission and reception.

Step 818 : Determine whether the time slot required for single-antenna transmission and reception has arrived. If yes, the flow returns to Step 802 ; if not, the flow goes to Step 820 .

Step 820 : Determine whether there is no need for dual-antenna transmission and reception. If yes, the process returns to step 802 ; if not, the process returns to step 816 .

In the above embodiment, due to the switching of frequency bands, some workstations may experience connection interruption. Taking time t4 in FIG. 7 as an example, since the wireless communication chip 130 is switched to use the 6GHz frequency band for dual-antenna transmission Therefore, the station using the 5GHz frequency band originally connected in the time slot (t3-t4) needs to be disconnected. Therefore, the wireless communication chip 130 needs to notify the station using the 5GHz frequency band to perform related operations. Specifically, please refer to FIG. 9 , which is a timing diagram of an access point using the chipset 100 and a workstation using the 5GHz frequency band. For the convenience of description, the timing diagram of FIG. 9 is based on the time points near the time t4 and t5 in FIG. 7 . to describe. First, it is assumed that the wireless communication chip 130 is using single-antenna transmission and reception or dual-antenna transmission and reception to communicate with the workstation (the workstation in the 5GHz band). If the antenna transmits and receives, the wireless communication chip 130 can first send a disconnection notification to the workstation to inform that the connection will be disconnected after a period of time (for example, 1 millisecond). Then, after a period of time, the wireless communication chip 130 will Actively disconnect the connection with the workstation, and switch to the 6GHz frequency band for dual-antenna transmission and reception with other workstations. After receiving the connection interruption notification from the access point, the station will delay the original association retry operation for 50 milliseconds, that is, it will not perform the connection retry operation for the next 50 milliseconds to try Connect to the access point while the workstation can enter power saving mode. Then, after 50 milliseconds, the workstation sends a connection retry request to the access point, and the wireless communication chip 130 in the access point will send a connection retry response to the workstation, and at this time, the workstation can use the single antenna to transmit and receive again Or the dual antenna transmits and receives to communicate with the wireless communication chip 130 for data exchange. It should be noted that the embodiment of FIG. 9 is described by taking a workstation in the 5GHz band as an example, and those with ordinary knowledge in the present invention should be able to understand how to apply the above content to the workstation in the 6GHz band.

Briefly summarizing the present invention, in the wireless communication chip of the present invention, the use of time division multiple access is used to achieve dual-antenna transmission and reception supporting the 5GHz frequency band or the 6GHz frequency band, or use fast frequency band switching to provide the 5GHz frequency band when needed, or It is a dual-antenna transmission and reception of 6GHz frequency band, which can effectively achieve multi-band dual-antenna transmission and reception function under the condition of using a single wireless communication chip, so as to effectively reduce the manufacturing and design costs of the chipset.

The above descriptions are only preferred embodiments of the present invention, and all equivalent changes and modifications made according to the scope of the patent application of the present invention shall fall within the scope of the present invention.

【Symbol Description】

100: Chipset

110: Processor

120, 130: wireless communication chip

210: Analog Front End Circuits

212, 214: transceiver circuit

216, 218: Frequency Synthesizer

220: Fundamental frequency circuit

230: Media Access Control Circuit

240: Interface circuit

500 to 514: Steps

600: Packet

800～820: Steps

CLK1, CLK2: clock pulse signal

t1～t5: time

Claims (10)

1. A wireless communication chip, comprising:

an analog front end circuit, comprising:

a first transceiver circuit for transmitting or receiving signals through a first antenna; and

a second transceiver circuit for transmitting or receiving signals through a second antenna;

a baseband circuit for controlling the first transceiver circuit to communicate using a first frequency band or a second frequency band, and/or controlling the second transceiver circuit to communicate using the first frequency band or the second frequency band;

the baseband circuit controls the first transceiver circuit and the second transceiver circuit so that the analog front-end circuit alternately performs dual-antenna transmission and reception of the first frequency band and dual-antenna transmission and reception of the second frequency band.

2. The wireless communication chip of claim 1, wherein the first frequency band is a 5GHz frequency band, and the second frequency band is a 6GHz frequency band.

3. The wireless communication chip as claimed in claim 1, wherein in a first timeslot, the baseband circuit controls the first transceiver circuit and the second transceiver circuit such that the first transceiver circuit and the second transceiver circuit transmit or receive signals in the first frequency band and the first transceiver circuit and the second transceiver circuit cannot transmit or receive signals in the second frequency band; and in a second time slot next to the first time slot, the baseband circuit controls the first transceiver circuit and the second transceiver circuit so that the first transceiver circuit and the second transceiver circuit transmit or receive signals in the second frequency band, and at the moment, the first transceiver circuit and the second transceiver circuit cannot transmit or receive signals in the first frequency band.

4. The wireless communication chip as claimed in claim 3, wherein the analog front-end circuit further comprises:

at least one frequency synthesizer, for generating a clock signal with a frequency in the first frequency band to the first transceiver circuit and the second transceiver circuit during the first time slot, and for generating the clock signal with a frequency in the second frequency band to the first transceiver circuit and the second transceiver circuit during the second time slot.

5. A wireless communication chip, comprising:

an analog front end circuit, comprising:

a first transceiver circuit for transmitting or receiving signals through a first antenna; and

a second transceiver circuit for transmitting or receiving signals through a second antenna;

a baseband circuit for controlling the first transceiver circuit to communicate using a first frequency band or a second frequency band, and/or controlling the second transceiver circuit to communicate using the first frequency band or the second frequency band;

wherein the baseband circuit controls the first transceiver circuit and the second transceiver circuit such that the first transceiver circuit transmits and receives using a single antenna in the first frequency band and the second transceiver circuit transmits and receives using a single antenna in the second frequency band; and when the analog front-end circuit and the baseband circuit receive a specific packet indicating that a dual-antenna transmission and reception requirement exists, the baseband circuit controls the first transceiver circuit and the second transceiver circuit so that the first transceiver circuit and the second transceiver circuit use dual-antenna transmission and reception in the first frequency band or the second frequency band.

6. The wireless communication chip of claim 5, wherein the first frequency band is a 5GHz band and the second frequency band is a 6GHz band.

7. The wireless communication chip as claimed in claim 5, wherein in a first time slot, the baseband circuit controls the first transceiver circuit and the second transceiver circuit such that the first transceiver circuit transmits or receives signals located in the first frequency band and the second transceiver circuit transmits or receives signals located in the second frequency band; and in a second time slot next to the first time slot, when a specific packet indicating a dual-antenna transmission and reception requirement is received through the second frequency band, the baseband circuit controls the first transceiver circuit and the second transceiver circuit so that the first transceiver circuit and the second transceiver circuit transmit or receive signals in the second frequency band, and the first transceiver circuit and the second transceiver circuit cannot transmit or receive signals in the first frequency band.

8. The wireless communication chip as claimed in claim 7, wherein the analog front-end circuit further comprises:

a first frequency synthesizer for generating a first clock signal to the first transceiver circuit;

a second frequency synthesizer for generating a second clock signal to the second transceiver circuit;

wherein, in the first time slot, the first frequency synthesizer generates the first clock pulse signal with the frequency in the first frequency band to the first transceiver circuit, and the second frequency synthesizer generates the second clock pulse signal with the frequency in the second frequency band to the second transceiver circuit; and in the second time slot, the first frequency synthesizer generates the first clock pulse signal with the frequency in the second frequency band to the first transceiver circuit, and the second frequency synthesizer generates the second clock pulse signal with the frequency in the second frequency band to the second transceiver circuit.

9. The wireless communication chip as claimed in claim 5, wherein in a first time slot, the baseband circuit controls the first transceiver circuit and the second transceiver circuit such that the first transceiver circuit transmits or receives signals located in the first frequency band and the second transceiver circuit transmits or receives signals located in the second frequency band; in a second time slot next to the first time slot, the baseband circuit controls the first transceiver circuit and the second transceiver circuit to enable the first transceiver circuit and the second transceiver circuit to transmit or receive signals in the first frequency band, and at the moment, the first transceiver circuit and the second transceiver circuit cannot transmit or receive signals in the second frequency band; in a third time slot next to the second time slot, the baseband circuit controls the first transceiver circuit and the second transceiver circuit such that the first transceiver circuit transmits or receives signals located in the first frequency band and the second transceiver circuit transmits or receives signals located in the second frequency band; and in a fourth time slot next to the third time slot, the baseband circuit controls the first transceiver circuit and the second transceiver circuit so that the first transceiver circuit and the second transceiver circuit transmit or receive signals in the second frequency band, and at the moment, the first transceiver circuit and the second transceiver circuit cannot transmit or receive signals in the first frequency band.

10. The wireless communication chip as claimed in claim 9, wherein the analog front-end circuit further comprises:

a first frequency synthesizer for generating a first clock pulse signal to the first transceiver circuit;

a second frequency synthesizer for generating a second clock signal to the second transceiver circuit;

wherein, in the first time slot and the third time slot, the first frequency synthesizer generates the first clock pulse signal with the frequency in the first frequency band to the first transceiver circuit, and the second frequency synthesizer generates the second clock pulse signal with the frequency in the second frequency band to the second transceiver circuit; in the second time slot, the first frequency synthesizer generates the first clock pulse signal with the frequency in the first frequency band to the first transceiver circuit, and the second frequency synthesizer generates the second clock pulse signal with the frequency in the first frequency band to the second transceiver circuit; and in the fourth time slot, the first frequency synthesizer generates the first clock pulse signal with the frequency in the second frequency band to the first transceiver circuit, and the second frequency synthesizer generates the second clock pulse signal with the frequency in the second frequency band to the second transceiver circuit.

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