Wireless communication method and wireless communication device

Abstract

The present invention provides a wireless communication method, comprising: generating first information indicating a first puncturing pattern of a bandwidth owned by a wireless access point, the first puncturing pattern indicating at least one sub-channel to be punctured in the bandwidth; and transmitting the first information to the wireless access point. For example, the first information includes a sub-channel bit map and a sub-channel bandwidth.

Description

Technical field

[0001] The present invention relates to wireless communications, and more particularly to a method for announcing a puncturing pattern to a wireless access point and a related wireless communication device. [Background Technology]

[0002] Wireless access points (APs) typically support greater bandwidth than non-AP STAs (non-AP STAs). With the introduction of 320 MHz bandwidth in the 6 GHz band, the gap between the two supported bandwidths by the APs has widened. For example, in 802.11be, one AP might support 320 MHz bandwidth while another might support 160 MHz. This gap is even greater when attempts are made to use 640 MHz bandwidth in the 6 GHz band. However, non-AP STAs may be able to support a bandwidth between the two AP bandwidths, such as 240 MHz between 160 MHz and 320 MHz, to manage the cost of supporting the larger bandwidth and gain some benefits from the additional bandwidth (e.g., from 160 MHz to 240 MHz). Therefore, an innovative design is needed that allows downlink (DL) and uplink (UL) traffic between APs and non-AP STAs to benefit from the additional bandwidth without requiring more bandwidth and the corresponding supported modulation and coding scheme (MCS) sets. [Summary of the invention]

[0003] One of the objectives of the present invention is to provide a method for announcing a puncturing pattern to a wireless access point and a related wireless communication device.

[0004] In one embodiment of the present invention, a wireless communication method is disclosed, comprising: generating first information indicating a first puncturing pattern of a bandwidth owned by a wireless access point, wherein the first puncturing pattern indicates at least one sub-channel to be punctured in the bandwidth; and transmitting the first information to the wireless access point.

[0005] In one embodiment of the present invention, a wireless communication device is disclosed. The wireless communication device includes a network interface circuit and a control circuit. The control circuit is configured to generate first information indicating a first puncturing pattern for a bandwidth owned by a wireless access point, and to instruct the network interface circuit to transmit the first information to the wireless access point. The first puncturing pattern indicates at least one sub-channel within the bandwidth to be punctured.

[0006] In one embodiment of the present invention, a wireless communication method is disclosed. The wireless communication method includes: generating information indicating a maximum modulation coding scheme index for a first bandwidth and a maximum modulation coding scheme index for a second bandwidth, wherein the second bandwidth is greater than the first bandwidth and the maximum modulation coding scheme index for the first bandwidth is not greater than the maximum modulation coding scheme index for the second bandwidth; and transmitting the information to a wireless communication device.

[0007] These and other objects of the present invention will no doubt become apparent to those skilled in the art after reading the following description of the preferred embodiments and the accompanying drawings.

Brief Description of the Drawings

[0008] Figure 1 FIG. 1 is a schematic diagram of a wireless communication system supporting the bandwidth puncturing scheme proposed in the present invention according to an embodiment of the present invention.

[0009] Figure 2 FIG. 1 is a schematic diagram illustrating a bandwidth with continuous puncturing and a bandwidth with discrete puncturing according to an embodiment of the present invention.

[0010] Figure 3 FIG. 1 is a schematic diagram illustrating limiting the maximum modulation and coding scheme index for different bandwidths to achieve similar physical layer rates according to an embodiment of the present invention. [Specific implementation method]

[0011] Certain words are used in the specification and the scope of the patent application to refer to specific components. It should be understood by those with ordinary knowledge in the art that hardware manufacturers may use different terms to refer to the same component. This specification and the scope of the patent application do not use the difference in name as a way to distinguish components, but use the difference in the function of the components as the criterion for distinction. The "including" and "comprising" mentioned throughout the specification and the scope of the patent application are open-ended terms and should be interpreted as "including but not limited to". In addition, the term "coupling" or "coupling" includes any direct and indirect electrical connection means. Therefore, if the text describes a first device coupled to a second device, it means that the first device can be directly electrically connected to the second device, or indirectly electrically connected to the second device through other devices and connection means.

[0012] Figure 11 is a schematic diagram of a wireless communication system supporting the bandwidth puncturing scheme proposed in the present invention according to an embodiment of the present invention. The wireless communication system 100 includes a plurality of wireless communication devices 102 and 104. For example, the wireless communication system 100 is a Wi-Fi system including an AP and a non-AP STA. In one embodiment of the present invention, the wireless communication device 102 may be a non-AP STA, and the wireless communication device 104 may be an AP, that is, the wireless communication device 102 may be a client STA associated with the AP. For the sake of brevity and simplicity, Figure 1 Only two wireless communication devices 102 and 104 are shown. In practice, the wireless communication system 100 allows more than two wireless communication devices in the same basic service set (BSS), including one AP and one or more non-AP STAs.

[0013] The wireless communication devices 102 and 104 may have the same or similar circuit structures. Figure 1 As shown, wireless communication device 102 includes a processor 112, memory 114, control circuitry 116, and network interface circuitry 117. Network interface circuitry 117 includes a transmitter circuitry 118 and a receiver circuitry 120. Memory 114 is used to store program code. Processor 112 is used to load and execute program code to manage wireless communication device 102. Control circuitry 116 is used to control wireless communication with wireless communication device 104. When wireless communication device 102 is a non-AP STA and wireless communication device 104 is an AP, control circuitry 116 controls the transmitter circuitry 118 of network interface circuitry 117 to handle uplink (UL) traffic between the AP and the non-AP STA, and controls the receiver circuitry 120 of network interface circuitry 117 to handle downlink (DL) traffic between the AP and the non-AP STA.

[0014] Wireless communication device 104 includes a processor 122, memory 124, control circuitry 126, and network interface circuitry 127. Network interface circuitry 127 includes a transmitter circuitry 128 and a receiver circuitry 130. Memory 124 is used to store program code. Processor 122 is used to load and execute program code to manage wireless communication device 104. Control circuitry 126 is used to control wireless communication with wireless communication device 102. When wireless communication device 102 is a non-AP STA and wireless communication device 104 is an AP, control circuitry 126 controls the transmitter circuitry 128 of network interface circuitry 127 to handle downlink (DL) traffic between the AP and non-AP STAs, and controls the receiver circuitry 130 of network interface circuitry 127 to handle uplink (UL) traffic between the AP and non-AP STAs.

[0015] It should be noted that Figure 1 Only components related to the present invention are shown. In practice, the wireless communication device 102 may include additional components to implement specified functions, and / or the wireless communication device 104 may include additional components to implement specified functions.

[0016] Wireless communication device 102, acting as a client STA, is connected to wireless communication device 104, acting as an AP. Wireless communication device 102 supports a puncturing pattern announcement function. Therefore, control circuit 116 of wireless communication device (e.g., non-AP STA) 102 generates information INF_1 indicating a puncturing pattern for a bandwidth owned by wireless communication device (e.g., AP) 104, and instructs network interface circuit 117 (particularly, transmitter circuit 118 of network interface circuit 117) to transmit information INF_1 to wireless communication device (e.g., AP) 104. For example, the bandwidth to be punctured may be the maximum bandwidth owned by wireless communication device (e.g., AP) 104 (e.g., 320 MHz), and information INF_1 may be generated and transmitted during an association process between wireless communication device (e.g., non-AP STA) 102 and wireless communication device (e.g., AP) 104. The puncturing pattern announced by the wireless communication device (e.g., non-AP STA) 102 indicates one or more subchannels (also referred to as subbands) to be punctured within the bandwidth (e.g., maximum bandwidth) owned by the wireless communication device (e.g., AP STA) 104.

[0017] In some embodiments of the present invention, the information INF_1 may include a subchannel bitmap that indicates which subchannels are to be punctured. For example, the lowest-numbered bit in the subchannel bitmap may correspond to the subchannel with the lowest frequency (e.g., a 20 MHz subchannel) within the bandwidth to be punctured (e.g., 320 MHz), and each subsequent bit in the subchannel bitmap may correspond to the next higher-frequency subchannel. Setting a bit in the subchannel bitmap to 1 indicates that the corresponding subchannel (e.g., a 20 MHz subchannel) is punctured, and setting it to 0 indicates that the corresponding subchannel (e.g., a 20 MHz subchannel) is not punctured. Note that the primary subchannel (e.g., BW20) is not punctured.

[0018] As described above, the subchannel bitmap is used to indicate which subchannels are to be punctured. Therefore, by appropriately configuring the subchannel bitmap, the puncturing pattern announced by the wireless communication device (e.g., non-AP STA) 102 can apply contiguous puncturing or split puncturing to the bandwidth, such as Figure 2 shown.

[0019] In some embodiments of the present invention, the information INF_1 may further include a subchannel bandwidth, which may be defined as a value of 20 MHz, 40 MHz, or greater. The bandwidth to be punctured (e.g., 320 MHz) may include multiple subchannels, each of which has the same subchannel bandwidth indicated by the information INF_1. The subchannel bandwidth is set based on practical design considerations. For example, using a larger subchannel bandwidth can reduce the complexity of subchannel filtering and / or subchannel indication.

[0020] The bandwidth defined by the puncturing pattern and sub-channel bandwidth indicated by the INF_1 message is available for use by downlink physical layer protocol data units (PPDUs) and uplink PPDUs. The PPDUs can be trigger-based (TB), multi-user (MU), or single-user (SU) PPDUs. Specifically, downlink PPDUs received from a wireless communication device (e.g., an access point (AP)) 104 are located within the bandwidth defined by the puncturing pattern indicated by the INF_1 message, and uplink PPDUs transmitted to the wireless communication device (e.g., an AP) 104 are located within the bandwidth defined by the puncturing pattern indicated by the INF_1 message.

[0021] In another design, the control circuit 116 of the wireless communication device (e.g., a non-AP STA) 102 further generates information INF_2 indicating another puncturing pattern for the same bandwidth owned by the wireless communication device (e.g., AP) 104, and instructs the network interface circuit 117 (particularly, the transmitter circuit 118 of the network interface circuit 117) to transmit the information INF_2 to the wireless communication device (e.g., AP) 104. Similarly, the information INF_2 may include a subchannel bit map and a subchannel bandwidth to define another puncturing pattern announced by the wireless communication device 102. For example, the bandwidth with puncturing defined by the subchannel bit map and subchannel bandwidth indicated by the information INF_1 may be used for downlink PPDUs, and the bandwidth with puncturing defined by the subchannel bit map and subchannel bandwidth indicated by the information INF_2 (INF_2≠INF_1) may be used for uplink PPDUs. The PPDU may be a TB PPDU, an MU PPDU, or a SU PPDU. Specifically, a downlink PPDU received from the wireless communication device (e.g., AP) 104 is located within a frequency bandwidth having punctures defined by the puncture pattern indicated by the information INF_1, and an uplink PPDU transmitted to the wireless communication device (e.g., AP) 104 is located within a frequency bandwidth having punctures defined by a different puncture pattern indicated by the information INF_2.

[0022] By using the puncturing pattern indication announced by the client STA, some benefits can be obtained. For example, additional bandwidth support between the two bandwidths owned by the AP (for example, 320MHz and 160MHz) can be enabled, allowing the client STA to choose to support the 240MHz bandwidth. Since the supported bandwidth is selected by the client STA, additional design flexibility can be added to the client STA without bringing additional bandwidth support complexity to the AP. For example, in terms of power saving, the client STA may want to maintain a lower bandwidth support while claiming that it can support a larger bandwidth.

[0023] In addition to the puncturing pattern, the wireless communication device (e.g., non-AP STA) 102 can also announce the modulation and coding scheme (MCS) set supported by the bandwidth with puncturing. Specifically, the control circuit 116 generates information INF_3 indicating the MCS set supported by the bandwidth with the puncturing pattern (indicated by the information INF_1 / INF_2), and instructs the network interface circuit 117 (particularly the transmitter circuit 118 of the network interface circuit 117) to transmit the information INF_3 to the wireless communication device (e.g., AP) 104. The MCS set may include a modulation and coding scheme (MCS) and a spatial stream (SS). The MCS set indicated by the information INF_3 may be one of the multiple MCS sets available, or it may be a completely new MCS set that is completely different from the MCS set for any other bandwidth. In some embodiments of the present invention, the MCS sets used for downlink physical layer protocol data units (DL PPDUs) and uplink physical layer protocol data units (UL PPDUs) with bandwidth puncturing may be different or the same to reduce complexity.

[0024] The information INF_1 / INF_2 indicating the puncturing pattern may be generated and transmitted during a connection procedure between the wireless communication device (e.g., non-AP STA) 102 and the wireless communication device (e.g., AP) 104. After the connection procedure (i.e., after the client STA has connected to the AP), the wireless communication device (e.g., non-AP STA) 102 may need to update the puncturing pattern and / or MCS set for different usage scenarios. Specifically, the control circuit 116 generates information INF_4 indicating updated parameters of the puncturing pattern (indicated by the information INF_1 / INF_2 during the connection procedure) and / or the MCS set (indicated by the information INF_3 during the connection procedure), and instructs the network interface circuit 117 (particularly, the transmitter circuit 118 of the network interface circuit 117) to transmit the information INF_4 to the wireless communication device (e.g., AP) 104 to update the puncturing pattern and / or MCS set.

[0025] In a first exemplary design, a negotiation-based update mechanism may be employed. Therefore, the control circuit 116 generates a frame F1 (a request frame) including information INF_4 and instructs the network interface circuit 117 (particularly, the transmitter circuit 118 of the network interface circuit 117) to transmit the frame F1 (the request frame) to the wireless communication device (e.g., AP) 104. After the control circuit 126 receives the frame F1 (the request frame) via the network interface circuit 127 (particularly, the receiver circuit 130 of the network interface circuit 127), the control circuit 126 generates a frame F2 (a response frame) and instructs the network interface circuit 127 (particularly, the transmitter circuit 128 of the network interface circuit 127) to transmit the frame F2 (the response frame) to the wireless communication device (e.g., non-AP STA) 102. If the wireless communication device (e.g., AP) 104 accepts the update request, it transmits a frame F2 containing a confirmation message to the wireless communication device (e.g., non-AP STA) 102. After the update is confirmed and completed, the updated puncturing pattern and / or updated MCS set can be applied when the wireless communication device (e.g., AP) 104 transmits a DL PPDU to the wireless communication device (e.g., non-AP STA) 102. If the wireless communication device (e.g., AP) 104 rejects the update request, it transmits a frame F2 containing a rejection message to the wireless communication device (e.g., non-AP STA) 102.

[0026] The timing (wait time) for transmitting a response frame can be further defined, requiring the access point (AP) to respond promptly after receiving a request from a client station (STA). For example, the timing (wait time) can be defined by the target beacon transmission time (TBTT), meaning that after receiving the request frame, the AP must respond immediately within N TBTTs. Alternatively, the timing (wait time) can be announced by the client STA or the AP during the connection process.

[0027] In a second exemplary design, a notification-based update mechanism may be employed. Therefore, the control circuit 116 generates a frame F1 (a notification frame) containing information INF_4 and instructs the network interface circuit 117 (particularly, the transmitter circuit 118 of the network interface circuit 117) to transmit the frame F1 (a notification frame) to the wireless communication device (e.g., an AP) 104. After the control circuit 126 receives the frame F1 (a notification frame) via the network interface circuit 127 (particularly, the receiver circuit 130 of the network interface circuit 127), the control circuit 126 generates a frame F2 (an acknowledgment frame) and instructs the network interface circuit 127 (particularly, the transmitter circuit 128 of the network interface circuit 127) to transmit the frame F2 (an acknowledgment frame) to the wireless communication device (e.g., a non-AP STA) 102. For example, an acknowledgment frame is typically carried in a physical layer protocol data unit (PPDU) that precedes the end of the PPDU that carried the request frame and is followed by a short interframe space (SIFS). Once the wireless communication device (e.g., AP) 104 transmits an acknowledgment frame in response to the request frame, the update is confirmed and completed. After the update is confirmed and completed, the updated puncturing pattern and / or updated modulation and coding scheme set (MCS set) can be applied when the wireless communication device (e.g., AP) 104 transmits a downlink PPDU to the wireless communication device (e.g., non-AP STA) 102. Note that the wireless communication device (e.g., AP) 104 may not transmit an acknowledgment frame in response to the request frame due to interference or other factors.

[0028] In some embodiments of the present invention, wireless communication device (e.g., non-AP STA) 102 may also declare its ability to update the puncturing pattern and corresponding modulation and coding scheme set (MCS set) during the connection process. This allows wireless communication device (e.g., AP) 104 to request wireless communication device (e.g., non-AP STA) 102 to update the puncturing pattern and / or modulation and coding scheme set for different usage scenarios. Specifically, control circuit 126 generates frame F3 (which is a request frame) and instructs network interface circuit 127 (particularly, transmitter circuit 128 of network interface circuit 127) to transmit frame F3 (which is a request frame) to wireless communication device (e.g., non-AP STA) 102. Control circuit 116 receives frame F3 (which is a request frame) via network interface circuit 117 (particularly, receiver circuit 120 of network interface circuit 117). If the wireless communication device (e.g., non-AP STA) 102 accepts the update request, the control circuit 116 generates information INF_4 indicating updated parameters of the puncturing pattern (indicated by information INF_1 / INF_2 during the connection procedure) and / or the modulation and coding scheme set (indicated by information INF_3 during the connection procedure), and instructs the network interface circuit 117 (particularly, the transmitter circuit 118 of the network interface circuit 117) to transmit the information INF_4 to the wireless communication device (e.g., AP) 104 to update the puncturing pattern (indicated by information INF_1 / INF_2 during the connection procedure) and / or the modulation and coding scheme set (indicated by information INF_3 during the connection procedure). Either the negotiation-based update mechanism or the notification-based mechanism described above can be used to confirm and complete the update.

[0029] In some embodiments, the wireless communication device (e.g., non-AP STA) 102 may also declare its ability to update uplink (UL) modulation and coding scheme (MCS) support for a corresponding bandwidth during the connection process. The wireless communication device (e.g., AP) 104 may transmit a request frame to request the wireless communication device (e.g., non-AP STA) 102 to support a different uplink modulation and coding scheme set for the corresponding bandwidth. The wireless communication device (e.g., non-AP STA) 102 may accept or reject the update request by transmitting a response frame. If the wireless communication device (e.g., non-AP STA) 102 rejects the update request, the wireless communication device (e.g., non-AP STA) 102 may provide feedback on its uplink modulation and coding scheme support to the wireless communication device (e.g., AP) 104 via a response frame.

[0030] Generally speaking, under the same modulation and coding scheme set, the physical layer rate (PHY rate) is proportional to the bandwidth, such as Figure 3 Considering factors such as on-chip throughput, media access control (MAC) costs, and processor load, a better approach is to limit the upper limit of the physical layer rate. To maintain similar downlink / uplink physical layer rates, the client STA or AP can negotiate to limit the maximum modulation and coding scheme set index for different bandwidths.

[0031] Regarding the wireless communication device (e.g., non-AP STA) 102, the control circuit 116 generates information INF_5 indicating maximum modulation coding scheme indexes for different frequency bandwidths (e.g., a maximum modulation coding scheme index for a first frequency bandwidth and a maximum modulation coding scheme index for a second frequency bandwidth, wherein the second frequency bandwidth is greater than the first frequency bandwidth and the maximum modulation coding scheme index for the second frequency bandwidth is not greater than the maximum modulation coding scheme index for the first frequency bandwidth), and instructs the network interface circuit 117 (in particular, the transmitter circuit 118 of the network interface circuit 117) to transmit the information INF_5 to the wireless communication device (e.g., AP) 104.

[0032] Regarding the wireless communication device (e.g., AP) 104, the control circuit 126 generates information INF_5 indicating maximum modulation coding scheme indexes for different frequency bandwidths (e.g., a maximum modulation coding scheme index for a first frequency bandwidth and a maximum modulation coding scheme index for a second frequency bandwidth, wherein the second frequency bandwidth is greater than the first frequency bandwidth and the maximum modulation coding scheme index for the second frequency bandwidth is not greater than the maximum modulation coding scheme index for the first frequency bandwidth), and instructs the network interface circuit 127 (in particular, the transmitter circuit 128 of the network interface circuit 127) to transmit the information INF_5 to the wireless communication device (e.g., non-AP STA) 102.

[0033] The approximate physical layer rate is Figure 3 The following table shows the area marked with slashes. Figure 3To illustrate the approximate physical layer rates, the information INF_5 may be configured to indicate that the maximum modulation and coding scheme index for a 160 MHz bandwidth and two spatial streams (labeled "BW160 2ss") is MCS=13, the maximum modulation and coding scheme index for a 200 MHz bandwidth and two spatial streams (labeled "BW200 2ss") is MCS=10 or 11, the maximum modulation and coding scheme index for a 240 MHz bandwidth and two spatial streams (labeled "BW240 2ss") is MCS=9, the maximum modulation and coding scheme index for a 280 MHz bandwidth and two spatial streams (labeled "BW280 2ss") is MCS=7 or 8, and the maximum modulation and coding scheme index for a 320 MHz bandwidth and two spatial streams (labeled "BW320 2ss") is MCS=7. However, these are merely examples and are not intended to limit the present invention.

[0034] Those skilled in the art will readily appreciate that many modifications and variations can be made to the apparatus and method without departing from the principles of the present invention. Therefore, the above description should be limited only by the scope of the appended claims.

Claims

1. A wireless communication method, comprising: generating first information indicating a first puncture pattern of a bandwidth owned by the wireless access point, wherein the first puncture pattern indicates at least one sub-channel to be punctured in the bandwidth; and The first information is transmitted to the wireless access point.

2. The wireless communication method of claim 1, wherein the first information comprises a sub-channel bit map, and the sub-channel bit map indicates at least one sub-channel to be punctured. 3 . The wireless communication method as claimed in claim 1 , wherein the first information comprises a sub-channel bandwidth.

4. The wireless communication method of claim 1 , wherein a downlink physical layer protocol data unit received from the wireless access point is located in a punctured bandwidth defined by a first puncture pattern, and an uplink physical layer protocol data unit transmitted to the wireless access point is located in a punctured bandwidth defined by the first puncture pattern.

5. The wireless communication method of claim 1, further comprising: generating second information indicating a second puncture pattern of a bandwidth owned by the wireless access point; and transmitting the second information to the wireless access point.

6. The wireless communication method of claim 5 , wherein a downlink physical layer protocol data unit received from the wireless access point is located in a punctured bandwidth defined by a first puncture pattern, and an uplink physical layer protocol data unit transmitted to the wireless access point is located in a punctured bandwidth defined by a second puncture pattern.

7. The wireless communication method as described in claim 1 further comprises: generating second information indicating a modulation and coding scheme set supported by the bandwidth having the puncture defined by the first puncture pattern, wherein the modulation and coding scheme set includes a modulation and coding scheme and a spatial stream; and transmitting the second information to the wireless access point.

8. The wireless communication method of claim 7 , further comprising: generating third information indicating at least one updated parameter of at least one of the first puncture pattern and the modulation and coding scheme set; and transmitting the third information to the wireless access point to update at least one of the first puncture pattern and the modulation and coding scheme set.

9. The wireless communication method of claim 8, wherein the step of generating third information indicating at least one updated parameter of at least one of the first puncture pattern and the modulation and coding scheme set comprises: receiving a request frame from a wireless access point; and generating the third information in response to the request frame.

10. A wireless communication device comprising: A network interface circuit; and a control circuit for generating first information indicating a first puncture pattern of a bandwidth owned by a wireless access point, and instructing the network interface circuit to transmit the first information to the wireless access point, wherein the first puncture pattern indicates at least one sub-channel in the bandwidth to be punctured.

11. The wireless communication device of claim 10, wherein the first information comprises a sub-channel bit map, and the sub-channel bit map indicates at least one sub-channel to be punctured.

12. The wireless communication device as claimed in claim 10, wherein the first information comprises a sub-channel bandwidth.

13. The wireless communication device of claim 10 , wherein a downlink physical layer protocol data unit received from the wireless access point is located in a punctured bandwidth defined by a first puncture pattern, and an uplink physical layer protocol data unit transmitted to the wireless access point is located in a punctured bandwidth defined by the first puncture pattern.

14. The wireless communication device as claimed in claim 10, wherein the control circuit is further configured to generate second information of a second puncture pattern indicating a bandwidth owned by the wireless access point, and instruct the network interface circuit to transmit the second information to the wireless access point.

15. The wireless communication device of claim 14 , wherein a downlink physical layer protocol data unit received from the wireless access point is located in a punctured bandwidth defined by a first puncture pattern, and an uplink physical layer protocol data unit transmitted to the wireless access point is located in a punctured bandwidth defined by a second puncture pattern.

16. The wireless communication device of claim 10 , wherein the control circuit is further configured to generate second information indicating a modulation coding scheme set supported by the bandwidth having the puncture defined by the first puncture pattern, and instruct the network interface circuit to transmit the second information to the wireless access point, wherein the modulation coding scheme set includes a modulation coding scheme and a spatial stream.

17. The wireless communication device of claim 16 , wherein the control circuit is further configured to generate third information indicating at least one updated parameter of at least one of the first puncture pattern and the modulation and coding scheme set, and to instruct the network interface circuit to transmit the third information to the wireless access point to update at least one of the first puncture pattern and the modulation and coding scheme set.

18. The wireless communication device of claim 17, wherein the control circuit is further configured to receive a request frame from the wireless access point through the network interface circuit; and the third information is generated by the control circuit in response to the request frame.

19. A wireless communication method, comprising: generating information indicating a maximum modulation coding scheme index for a first bandwidth and a maximum modulation coding scheme index for a second bandwidth, wherein the second bandwidth is larger than the first bandwidth, and the maximum modulation coding scheme index for the first bandwidth is not larger than the maximum modulation coding scheme index for the second bandwidth; and The information is transmitted to a wireless communication device.

20. The wireless communication method of claim 19, wherein the wireless communication method is adopted by a wireless access point, and the wireless communication device is a workstation that is not a wireless access point; or the wireless communication method is adopted by a workstation that is not a wireless access point, and the wireless communication device is a wireless access point.

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