CN111988855A - Wireless communication method and related wireless device - Google Patents
Wireless communication method and related wireless device Download PDFInfo
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- CN111988855A CN111988855A CN202010441616.8A CN202010441616A CN111988855A CN 111988855 A CN111988855 A CN 111988855A CN 202010441616 A CN202010441616 A CN 202010441616A CN 111988855 A CN111988855 A CN 111988855A
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- 230000008054 signal transmission Effects 0.000 claims abstract description 102
- 230000011664 signaling Effects 0.000 claims description 12
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0446—Resources in time domain, e.g. slots or frames
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/20—Manipulation of established connections
- H04W76/27—Transitions between radio resource control [RRC] states
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Abstract
The invention provides a wireless communication method of a wireless device, wherein the wireless device comprises the following steps: a first wireless module and a second wireless module, the wireless communication method comprising the steps of: receiving frame exchange information from a second wireless module using the first wireless module, wherein the frame exchange information includes a time of signal transmission and signal reception of the second wireless module; and scheduling signal transmission and signal reception of the first wireless module according to the frame exchange information of the second wireless module. The overall signal quality of the wireless device and the wireless communication method provided by the invention becomes better.
Description
Cross-referencing
This application claims priority to U.S. provisional application No. 62/852,362, filed 24.5.2019, the entire contents of which are incorporated herein by reference.
Technical Field
The present invention relates to a wireless communication method of a wireless device.
Background
Current wireless devices typically include at least two wireless modules, such as a Wi-Fi module and a Bluetooth (BT) module. In order to avoid signal collision, the wireless module may select a non-overlapping channel and transmit/receive data using a Frequency Division Duplex (FDD) method. In FDD coexistence of radios, the transmit signal of one radio degrades the receive signal of another radio even though the radios operate on non-overlapping channels. In addition, in current wireless devices, antenna isolation becomes small, and the reduction in antenna isolation may increase interference between wireless modules.
Disclosure of Invention
Therefore, an object of the present invention is to provide a wireless communication method that can align signal transmission of two wireless modules or align signal reception of two wireless modules to solve the above-mentioned problems.
According to an embodiment of the present invention, a wireless communication method of a wireless device is disclosed, wherein the wireless device includes a first wireless module and a second wireless module, and the wireless communication method includes the steps of: the first wireless module receives frame exchange information from the second wireless module, wherein the frame exchange information comprises the time of signal transmission and signal reception of the second wireless module; and scheduling signal transmission and signal reception of the first wireless module according to the frame exchange information of the second wireless module.
According to another embodiment of the present invention, a wireless device is disclosed that includes a first wireless module and a second wireless module. In operation of the wireless device, the first wireless module receives frame exchange information from the second wireless module, wherein the frame exchange information includes times of signal transmission and signal reception by the second wireless module; the first wireless module schedules signal transmission and reception of the first wireless module according to the frame exchange information of the second wireless module.
These and other objects of the present invention will no doubt become obvious to those of ordinary skill in the art after having read the following detailed description of the preferred embodiments which are illustrated in the various drawing figures and drawings.
Drawings
Fig. 1 is a diagram illustrating a wireless device according to one embodiment of the present invention.
Fig. 2 shows a timing diagram of a BT module and a Wi-Fi module according to a first embodiment of the present invention.
Fig. 3 is an alternative embodiment of the BT module and the Wi-Fi module shown in fig. 2.
Fig. 4 shows a timing diagram of a BT module and a Wi-Fi module according to a second embodiment of the present invention.
Fig. 5 is an alternative embodiment of the BT module and the Wi-Fi module shown in fig. 2.
Fig. 6 shows a timing diagram of a BT module and a Wi-Fi module according to a third embodiment of the present invention.
Detailed Description
Certain terms are used throughout the following description and claims to refer to particular system components. As one skilled in the art will appreciate, manufacturers may refer to components by different names. This document does not intend to distinguish between components that differ in name but not function. In the following discussion and claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "including, but not limited to … …". The terms "coupled" and "coupled" are intended to mean either an indirect or direct electrical connection. Thus, if a first device couples to a second device, that connection may be through a direct electrical connection, or through an indirect electrical connection via other devices and connections.
Fig. 1 is a diagram illustrating a wireless device 100 according to one embodiment of the invention. As shown in fig. 1, the wireless device 100 includes two wireless modules (in this embodiment, the BT module 110 and the Wi-Fi module 120) and a processor 130. In this embodiment, the wireless apparatus 100 may be a cell phone, a tablet, a notebook, or any other electronic device capable of wireless communication with one or more electronic devices (e.g., electronic device 102).
To reduce interference between the BT module 110 and the Wi-Fi module 120, in one embodiment, the Wi-Fi module 120 may transmit frame exchange information to the BT module 110 informing the Wi-Fi module 120 of the time of signal transmission and the time of signal reception, and the BT module 110 may schedule its signal transmission and signal reception by referring to the frame exchange information of the Wi-Fi module 120 such that the signal transmission time of the BT module 110 aligns with the signal transmission time of the Wi-Fi module 120 and/or the signal reception time of the BT module 110 aligns with the signal reception time of the Wi-Fi module 120. In another embodiment, the BT module 110 may transmit frame exchange information to the Wi-Fi module 120 to inform the BT module 110 of the signal transmission timing, and the Wi-Fi module 120 may schedule its signal transmission by referring to the frame exchange information of the BT module 110 so that the signal transmission time of the Wi-Fi module 120 is aligned with the signal transmission time of the BT module 110. In view of the above, by controlling the BT module 110 and the Wi-Fi module 120 to simultaneously perform signal transmission and/or signal reception as much as possible, the signal reception of the BT module 110 may not be interfered or may be subjected to only little interference by the signal transmission of the Wi-Fi module 120, and/or the signal reception of the Wi-Fi module 120 may not be interfered or may be subjected to only little interference by the signal transmission of the BT module 110, and the overall signal quality of the wireless device 100 becomes better.
Fig. 2 shows a timing diagram of the BT module 110 and the Wi-Fi module 120 according to the first embodiment of the present invention. In this embodiment, the Wi-Fi module 120 transmits frame exchange information to the BT module 110, wherein the frame exchange information includes a minimum back-off time (back-off time) for all Access Categories (ACs), a signal Transmission (TX) activation indicator, a signal Reception (RX) activation indicator (predicted RX indicator), a TX residual physical layer protocol data unit (PPDU) when TX activation is in progress, and a prediction of a next phase when RX activation is in progress and a residual PPDU in response to RX. After receiving the frame exchange information of the Wi-Fi module 120, the BT module 110 schedules its signal transmission time and signal reception time with reference to the frame exchange information. Specifically, the BT module 110 may begin signaling during signaling by the Wi-Fi module 120, and in one embodiment, the BT module 110 has signaling during signaling by the Wi-Fi module 120. When the ends of the signaling of the BT module 110 and the Wi-Fi module 120 are not aligned, the Wi-Fi module 120 may add a virtual subframe to the end of the signaled data to align the slot boundaries of the BT module 110, as shown in fig. 2. Additionally, the BT module 110 may initiate signal reception at the beginning of the signal reception of the Wi-Fi module 120, i.e., align the signal reception of the Wi-Fi module 120 at the beginning of the signal reception of the BT module 110. Similarly, the BT module 110 may refer to the frame exchange information of the Wi-Fi module 120 such that when the Wi-Fi module 120 transmits only one Null Data Packet Announcement (NDPA) and one Null Data Packet (NDP), the BT module 110 transmits a signal; and the BT module 110 may further refer to the frame exchange information of the Wi-Fi module 120, and the BT module 110 receives a signal when the Wi-Fi module 120 receives a report in response to the NDP.
In an alternative embodiment, referring to fig. 3, initially, Wi-Fi module 120 operates in a sleep mode so BT module 110 may freely select signal transmission and signal reception (fig. 3 shows BT module 110 transmitting signal "3-DH 3" with a packet type defined in the BT specification). Then, the Wi-Fi module 120 transmits frame exchange information to the BT module 110 to inform the time of signal transmission and signal reception, as shown in fig. 2. The BT module 110 selects an appropriate packet type with reference to the time and length of signal transmission of the Wi-Fi module 120. In the present embodiment, since the difference between the signal transmission time and the period T _ intra of the remaining signal transmission of the Wi-Fi module 120 is greater than the length of the packet type "3-DH 3", the BT module 110 selects the packet type "3-DH 3" and starts signal transmission at a frame boundary and receives a response after successfully transmitting a data packet. In the embodiment shown in fig. 3, the time axis marks intervals, each interval representing a frame period having about 1.25ms (milliseconds), and the period T _ intra is a difference between a scheduling time and a frame boundary. Then, the BT module 110 starts signal reception during signal reception of the Wi-Fi module 120 with reference to the reception time of the signal of the Wi-Fi module 120. Next, the BT module 110 refers to the time and length of signal transmission (NDPA and NDP) of the Wi-Fi module 120 to select an appropriate packet type. In the present embodiment, since the difference between the remaining signal transmission time of the Wi-Fi module 120 and the period T _ intra is smaller than the length of the packet type "3-DH 3", the BT module 110 selects the packet type "3-DH 1" having a shorter length and starts signaling at a frame boundary and receives a response after successfully transmitting a data packet.
Fig. 4 shows a timing diagram of the BT module 110 and the Wi-Fi module 120 according to the second embodiment of the present invention. In this embodiment, Wi-Fi module 120 sends frame exchange information to BT module 110, where the frame exchange information includes a signal Transmission (TX) activation indicator (predicted T X indicator), a signal Reception (RX) activation indicator, an RX decode state indicating that the packet is decoded and not allowed to be discarded, an RX doze state indicating that Wi-Fi module 120 is operating in sleep mode, an RX remaining PPDU when RX is active, and a next phase prediction. Upon receiving the frame exchange information of the Wi-Fi module 120, the BT module 110 schedules its signal transmission time and signal reception time with reference to the frame exchange information. Specifically, the BT module 110 may initiate signal reception during signal reception of the Wi-Fi module 120 and initiate signal transmission during signal transmission of the Wi-Fi module 120. In the present embodiment, in the first signal reception of the Wi-Fi module 120, the Wi-Fi module 120 enters the sleep mode because the Wi-Fi module 120 cannot decode received data, so the BT module 110 freely selects signal transmission and signal reception. In the second signal reception of the Wi-Fi module 120, the BT module 110 may start signal reception during the signal reception of the Wi-Fi module 120, and the BT module 110 may refer to frame exchange information of the Wi-Fi module 120 to have signal transmission when the Wi-Fi module 120 transmits an Acknowledgement (ACK) for received data.
In an alternative embodiment, referring to fig. 5, initially, Wi-Fi module 120 operates in the sleep mode so BT module 110 may freely select signal transmission and signal reception (fig. 5 shows BT module 110 transmitting a signal with packet type "3-DH 3"). Then, the Wi-Fi module 120 transmits frame exchange information to the BT module 110 to inform the time of signal transmission and signal reception, as shown in fig. 4. As shown in fig. 5, the Wi-Fi module 120 fails to decode the received data and operates in the sleep mode, so the BT module 110 may freely select signal transmission and signal reception, and in this embodiment, because the difference between one remaining signal reception time and a period of time T _ intra of the Wi-Fi module 120 is less than the length of the packet type "3-DH 3", the BT module 110 selects the packet type "3-DH 1" and starts signal transmission at a frame boundary and receives a response after successfully transmitting a data packet. In the embodiment shown in fig. 5, the time axis marks intervals, each interval representing a frame period having about 1.25ms, and the period T _ intra is a difference between a scheduling time and a frame boundary. Then, when the Wi-Fi module 120 does not have signal transmission (e.g., the Wi-Fi module 120 is idle and has signal reception), the BT module 110 starts signal reception. Finally, the BT module 110 refers to the signal transmission time of the Wi-Fi module 120 to start signal transmission at a frame boundary and receives a response after successfully transmitting a packet.
Fig. 6 shows a timing diagram of the BT module 110 and the Wi-Fi module 120 according to the third embodiment of the present invention. In this embodiment, the BT module 110 sends frame exchange information to the Wi-Fi module 120, where the frame exchange information includes a signal Transmission (TX) activation indicator, a signal Reception (RX) indicator (predicted RX indicator), a TX residual physical layer protocol data unit (PPDU) when TX is activated, a prediction of a next stage, and an RX residual PPDU when RX is activated. After receiving the frame exchange information of the BT module 110, the wireless Wi-Fi module 120 schedules its signal transmission time and signal reception time with reference to the frame exchange information. Specifically, the Wi-Fi module 120 may start signaling during signaling by the BT module 110, and in one embodiment, the Wi-Fi module 120 has signaling during signaling by the base station module. If the ends of the signal transmissions of the BT module 110 and the Wi-Fi module 120 are not aligned, the Wi-Fi module 120 may add a virtual subframe to the end of the data of the transmitted signal to align the slot time boundaries of the BT module 110, as shown in fig. 6. Further, the Wi-Fi module 120 may start signal reception when the BT module 110 starts signal reception, i.e., the start of signal reception by the Wi-Fi module 120 is aligned with the start of signal reception by the BT module 110.
Briefly summarized, in the wireless communication method of the present invention, one wireless module can schedule signal transmission and signal reception by referring to frame exchange information of the other wireless module so that both wireless modules have signal transmission and/or signal reception at the same time as much as possible. Therefore, since the signal reception of the wireless module may not be interfered or only minimally interfered by the signal transmission of other wireless modules, the overall signal quality of the wireless device becomes better.
Those skilled in the art will readily observe that numerous modifications and alterations of the apparatus and method may be made while retaining the teachings of the invention. Accordingly, the above disclosure should be construed as limited only by the metes and bounds of the appended claims.
Claims (20)
1. A method of wireless communication of a wireless apparatus, the wireless apparatus comprising: a first wireless module and a second wireless module, the wireless communication method comprising:
receiving, using a first wireless module, frame exchange information from a second wireless module, wherein the frame exchange information includes a time of signal transmission and signal reception of the second wireless module; and
and scheduling signal transmission and signal reception of the first wireless module according to the frame exchange information of the second wireless module.
2. The wireless communication method according to claim 1, wherein the step of scheduling signal transmission and signal reception of the first wireless module according to the frame exchange information comprises:
scheduling signal transmission and signal reception of the first wireless module such that signal transmission of the first wireless module is aligned with signal transmission of the second wireless module, or such that signal reception of the first wireless module is aligned with signal reception of the second wireless module.
3. The wireless communication method according to claim 1, wherein the first wireless module of the wireless communication method is a Bluetooth (BT) module, the second wireless module is a wireless network (Wi-Fi) module, and the frame exchange information includes a time of signal transmission of the second wireless module and a time of signal reception predicted by the second wireless module after the signal transmission.
4. The wireless communication method according to claim 3, wherein the step of scheduling signal transmission and signal reception of the first wireless module according to the frame exchange information comprises:
scheduling signal transmission by the first wireless module to cause the first wireless module to start signal transmission during signal transmission by the second wireless module; and
scheduling signal reception by the first wireless module such that the first wireless module starts signal reception when the second wireless module does not perform signal transmission.
5. The wireless communication method according to claim 4, wherein the step of scheduling signal transmission and signal reception of the first wireless module according to the frame exchange information comprises:
scheduling signal transmission by the first wireless module to cause the first wireless module to transmit signals during transmission of signals by the second wireless module; and
scheduling signal reception by the first wireless module to align a start of signal reception by the first wireless module with a start of signal reception by the second wireless module.
6. The wireless communication method according to claim 4, wherein the step of scheduling the signal transmission of the first wireless module to cause the first wireless module to start signal transmission during the signal transmission of the second wireless module comprises:
selecting a packet type with reference to the time and length of signal transmission of the second wireless module;
scheduling signaling of the first wireless module using the packet type.
7. The wireless communication method according to claim 4, further comprising:
adding a virtual subframe to an end of signaling data of the second radio module to align a slot time boundary of the first radio module.
8. The wireless communication method according to claim 1, wherein the first wireless module is a BT module, wherein the second wireless module is a Wi-Fi module, and wherein the frame exchange information includes a time of signal reception by the second wireless module and a time of signal transmission predicted by the second wireless module after the signal reception.
9. The wireless communication method according to claim 8, wherein the step of scheduling signal transmission and signal reception of the first wireless module according to the frame exchange information comprises:
scheduling signal reception by the first wireless module to cause the first wireless module to begin signal reception during signal reception by the second wireless module; and
the first wireless module is scheduled for signal transmission such that the first wireless module begins signal transmission when the second wireless module has no signal reception.
10. The wireless communication method according to claim 1, wherein the first wireless module is a Wi-Fi module, the second wireless module is a BT module, and the frame exchange information includes a time of signal transmission by the second wireless module and a time of signal reception predicted by the second wireless module after the signal transmission.
11. The wireless communication method according to claim 10, wherein the step of scheduling signal transmission and signal reception of the first wireless module according to the frame exchange information comprises:
scheduling signal transmission by the first wireless module to cause the first wireless module to start signal transmission during signal transmission by the second wireless module; and
scheduling signal reception by the first wireless module such that the first wireless module starts signal reception when the second wireless module does not perform signal transmission.
12. The wireless communication method according to claim 11, wherein the step of scheduling signal transmission and signal reception of the first wireless module according to the frame exchange information comprises:
scheduling signal transmission by the first wireless module such that the first wireless module has signal transmission during signal transmission by the second wireless module; and
scheduling signal reception by the first wireless module such that a start of signal reception by the first wireless module is aligned with a start of signal reception by the second wireless module.
13. The wireless communication method according to claim 12, further comprising:
adding a virtual subframe to an end of the signaled data of the first radio module to align a slot time boundary of the second radio module.
14. A wireless device, comprising:
a first wireless module; and
a second wireless module;
the first wireless module receives frame exchange information from the second wireless module, wherein the frame exchange information comprises the time of signal transmission and signal reception of the second wireless module; and the first wireless module schedules the signal transmission and reception of the first wireless module according to the frame exchange information of the second wireless module.
15. The wireless apparatus of claim 14, wherein the first wireless module schedules signal transmission and signal reception such that signal transmission by the first wireless module is aligned with signal transmission by the second wireless module, or such that signal reception by the first wireless module is aligned with signal reception by the second wireless module.
16. The wireless communication method according to claim 14, wherein the first wireless module is a BT module, the second wireless module is a Wi-Fi module, and the frame exchange information includes a time of signal transmission by the second wireless module and a time of signal reception predicted by the second wireless module after the signal transmission.
17. The wireless communication method according to claim 16, wherein the first wireless module schedules the signal transmission to start the signal transmission during the signal transmission of the second wireless module, and wherein the first wireless module schedules the signal reception to start the signal reception when the second wireless module does not perform the signal transmission.
18. The wireless communication method according to claim 14, wherein the first wireless module is a BT module, the second wireless module is a Wi-Fi module, and the frame exchange information includes a signal reception time of the second wireless module, and a time of signal transmission after signal reception predicted by the second wireless module.
19. The wireless communication method according to claim 18, wherein the first wireless module schedules the signal reception to start the signal reception during the signal reception of the second wireless module, and the first wireless module schedules the signal transmission to start the signal transmission when the second wireless module has no signal reception.
20. The wireless communication method according to claim 14, wherein the first wireless module is a Wi-Fi module, the second wireless module is a BT module, and the frame exchange information includes a time of signal transmission by the second wireless module and a time of signal reception predicted by the second wireless module after signal transmission; the first radio module schedules signal transmission to start signal transmission during signal transmission of the second radio module; the first radio module schedules signal reception to start signal reception when the second radio module does not perform signal transmission.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201962852362P | 2019-05-24 | 2019-05-24 | |
| US62/852,362 | 2019-05-24 | ||
| US16/868,505 US11540297B2 (en) | 2019-05-24 | 2020-05-06 | Wireless communication method and associated wireless device |
| US16/868,505 | 2020-05-06 |
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| CN111988855A true CN111988855A (en) | 2020-11-24 |
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| CN202010441616.8A Pending CN111988855A (en) | 2019-05-24 | 2020-05-22 | Wireless communication method and related wireless device |
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Application publication date: 20201124 |