CN106488460B - Wireless communication method, and corresponding master device, slave device and wireless communication system - Google Patents
Wireless communication method, and corresponding master device, slave device and wireless communication system Download PDFInfo
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- CN106488460B CN106488460B CN201510541268.0A CN201510541268A CN106488460B CN 106488460 B CN106488460 B CN 106488460B CN 201510541268 A CN201510541268 A CN 201510541268A CN 106488460 B CN106488460 B CN 106488460B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/02—Resource partitioning among network components, e.g. reuse partitioning
- H04W16/10—Dynamic resource partitioning
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
A wireless communication method and corresponding master device, slave device and wireless communication system thereof, wherein a communication method applied to the slave device comprises the following steps: when the first channel is in a dormant state, a first awakening data packet sent by the main equipment is periodically received at a first time interval on the first channel; when the first awakening data packet is received, entering an activation state, sending an activation state signal to the main equipment on the first channel, and switching to a second channel; receiving a second awakening data packet sent by the main equipment periodically at a second time interval on a second frequency channel, and entering a continuous receiving state when receiving the second awakening data packet; transmitting a continuous reception status signal to the master device on the second frequency channel; and receiving communication data transmitted by the main equipment on a second frequency channel. The method mainly solves the technical problem that the average power consumption of the slave device is increased when the slave device is in a receiving state all the time from being awakened to receiving communication data, and can further reduce the average power consumption of the communication device.
Description
Technical Field
The invention relates to the technical field of wireless communication. And more particularly, to a wireless communication method and corresponding master device, slave device and wireless communication system.
Background
Wireless Communication (Wireless Communication) is a Communication method for exchanging information using the characteristic that an electromagnetic wave signal can propagate in a free space, and in recent years, the most developed and widely used Wireless Communication technology is in the field of information Communication. Wireless communications implemented in mobile are also commonly referred to as mobile communications. As mobile communication devices are applied more and more, battery-powered products are increasing, and thus the devices must be developed to low power consumption and micro power consumption.
It is not practical to reduce the power consumption of a mobile communication device, only the transmission power of the emitter, or only the current consumption of the receiver, which may have the adverse effect of reducing the communication quality. The average power consumption of the communication equipment can be greatly reduced only by adopting a mode of the communication equipment sleeping when the communication equipment is idle, so that the aim of reducing the power consumption is fulfilled. In a wireless communication system or network consisting of more than two radios, there is little time for one of the radios to actually be transmitting or receiving. When the communication equipment does not work in transmission or reception, the communication equipment is enabled to enter a dormant state, so that the average power consumption can be greatly reduced. Since the current consumption in the sleep state is only in microamperes. The current of the wireless communication device during transmission is more than tens of milliamperes, and the current of the wireless communication device during reception is also between tens of milliamperes and tens of milliamperes.
When a certain wireless communication device or a group of wireless communication devices is in a dormant state, the wireless communication device does not receive or transmit and is in a non-working state. And when other devices need to communicate directly with it, the communication is not successful. Therefore, when another device needs to communicate with it, the wireless communication device in the sleep state needs to be woken up and then communicates. A common wake-up method is a windowing method, that is, when a certain wireless transceiver in a wireless communication system has a communication requirement, a plurality of wake-up data packets are repeatedly sent, a receiver detects the wake-up data packets at regular time, and enters a wake-up state to wait for receiving communication data as long as one packet of data is correctly received. In this case, the master device transmits the wakeup packet, and the slave device wakes up by receiving the wakeup packet.
In the windowing method, although it is said that the power consumption can be reduced by only periodically detecting the wakeup packet when the slave device is in the sleep state, the average power consumption of the slave device increases during the waiting time from when the slave device is awakened to when the slave device receives the formal communication data, for example, during the time Tw in fig. 1. Furthermore, a general master device and a slave device only have one communication channel therebetween, and therefore, one master device can only perform intercommunication with one slave device or transmit data to a plurality of slave devices, and cannot perform intercommunication with other slave devices at the same time. In addition, in a wireless communication system having a plurality of master devices and a plurality of slave devices, when one of the master devices communicates with one of the slave devices, it occupies a communication channel, and the other master devices cannot communicate with the slave devices.
Disclosure of Invention
Therefore, the technical problem to be solved by the present invention is to provide a wireless communication method, which can further reduce the average power consumption of the device and can realize intercommunication between one master device and a plurality of slave devices, and a plurality of master devices respectively communicate with one or more slave devices, and a corresponding master device, slave devices and wireless communication system, wherein the slave devices are always in a receiving state during the waiting time from the time when the slave devices are awakened to receive formal communication data, the average power consumption of the slave devices is increased, only one master device and one slave device can perform intercommunication when only one communication channel is provided, the master device cannot perform intercommunication with other slave devices, and other master devices cannot perform intercommunication with other slave devices.
In order to solve the technical problems, the invention provides the following technical scheme:
a wireless communication method is applied to a slave device in a wireless communication system, and comprises the following steps:
when the first channel is in a dormant state, a first awakening data packet sent by the main equipment is periodically received at a first time interval on the first channel;
when the first awakening data packet is received and then enters an activated state, an activated state signal is sent to the main equipment on the first channel, and the first channel is switched to a second channel appointed with the main equipment;
receiving a second awakening data packet sent by the main equipment periodically at a second time interval on a second frequency channel, and entering a continuous receiving state when receiving the second awakening data packet;
transmitting a continuous reception status signal to the master device on the second frequency channel;
and receiving communication data transmitted by the main equipment on a second frequency channel.
Preferably, the second time interval is smaller than the first time interval.
A wireless communication method is applied to a master device in a wireless communication system, and comprises the following steps:
sending a first wake-up packet on a first channel;
receiving an activation status signal transmitted from a device on a first frequency channel;
after the first awakening data packet is sent, sending a second awakening data packet to the slave equipment on a second channel;
receiving a continuous reception status signal transmitted from the device on a second frequency channel;
and transmitting the communication data to the slave device on the second frequency channel.
A wireless communication method is applied to a master device in a wireless communication system, and comprises the following steps:
transmitting a first wake-up packet to at least two slave devices on a first frequency channel, the at least two slave devices including a first slave device and a second slave device;
receiving a first activation state signal transmitted by a first slave device on a first frequency channel;
receiving a second activation status signal transmitted by a second slave device on the first frequency channel;
after the first awakening data packet is sent, sending a second awakening data packet to the first slave equipment on a second frequency channel appointed with the first slave equipment, and sending a third awakening data packet to the second slave equipment on a third frequency channel appointed with the second slave equipment;
receiving a first continuous receiving state signal transmitted by a first slave device on a second frequency channel, and receiving a second continuous receiving state signal transmitted by a second slave device on a third frequency channel;
the first slave device is communicated with on the second frequency channel and the second slave device is communicated with on the third frequency channel.
A wireless communication method is applied to a wireless communication system, the wireless communication system at least comprises a first master device, a second master device, a first slave device and a second slave device, and the method comprises the following steps:
the first main equipment sends a first awakening data packet on a first frequency channel;
the first slave device in the dormant state periodically receives a first wake-up data packet at a first time interval on a first frequency channel;
when the first slave equipment receives the first awakening data packet and then enters an activated state, a first activated state signal is sent to the first main equipment on the first frequency channel, and the first slave equipment is switched to a second frequency channel appointed with the first main equipment;
the first master device receiving a first active status signal on a first frequency channel;
after the first main device sends the first awakening data packet, sending a second awakening data packet to the first slave device on a second channel;
the first slave equipment receives a second awakening data packet periodically at a second time interval on a second frequency channel, and enters a continuous receiving state when receiving the second awakening data packet;
the first slave device sends a first continuous receiving state signal to the first master device in a second frequency channel;
the first master device receives a first continuous receiving state signal on a second frequency channel;
the first master device sends communication data to the first slave device on the second frequency channel;
the first slave device receives communication data sent by the first master device on a second frequency channel;
the second main device sends a third awakening data packet on the first frequency channel;
the second slave device in the dormant state periodically receives a third wake-up data packet at a third time interval on the first frequency channel;
when the second slave equipment receives the third wake-up data packet and then enters an activation state, a second activation state signal is sent to the second master equipment in the first channel, and the second slave equipment is switched to a third channel appointed with the second master equipment;
the second master device receiving a second active status signal on the first frequency channel;
after the second master device finishes sending the third awakening data packet, sending a fourth awakening data packet to the second slave device on the third frequency channel;
the second slave equipment receives a fourth awakening data packet periodically in a third channel according to a fourth time interval, and enters a continuous receiving state when receiving the fourth awakening data packet;
the second slave device sends a second continuous receiving state signal to the second master device in a third frequency channel;
the second master device receiving a second continuous reception status signal on a third frequency channel;
the second master device sends communication data to the second slave device on a third frequency channel;
and the second slave device receives the communication data transmitted by the second master device on the third frequency channel.
A wireless communication slave device, comprising:
the first awakening data packet receiving unit is used for periodically receiving a first awakening data packet sent by the main equipment at a first frequency channel according to a first time interval when the first awakening data packet receiving unit is in a dormant state;
the sending and switching unit enters an activation state after receiving the first awakening data packet, is used for sending an activation state signal to the main equipment on the first channel and switching to a second channel appointed with the main equipment;
a second wake-up packet receiving unit, configured to periodically receive, on a second channel, a second wake-up packet sent by the host device at a second time interval, and enter a continuous receiving state when receiving the second wake-up packet;
a continuous reception status signal transmitting unit for transmitting a continuous reception status signal to the master device on the second frequency channel;
and the communication data receiving unit is used for receiving the communication data transmitted by the main equipment on the second frequency channel.
A wireless communication master device, comprising:
a first wake-up packet sending unit, configured to send a first wake-up packet on a first channel;
an activation status signal receiving unit for receiving an activation status signal transmitted from a device on a first frequency channel;
the second awakening data packet sending unit is used for sending a second awakening data packet to the slave equipment on a second channel after the first awakening data packet is sent;
a continuous reception status signal receiving unit for receiving a continuous reception status signal transmitted from the device on a second frequency channel;
and the communication data sending unit is used for sending the communication data to the slave equipment on the second frequency channel.
A wireless communication master device, comprising:
a first sending unit, configured to send a first wake-up packet to at least two slave devices on a first frequency channel, where the at least two slave devices include a first slave device and a second slave device;
the first receiving unit is used for receiving a first activation state signal sent by first slave equipment on a first frequency channel;
the second receiving unit is used for receiving a second activation state signal sent by a second slave device on the first frequency channel;
the second sending unit is used for sending a second awakening data packet to the first slave equipment on a second frequency channel appointed by the first slave equipment after the first awakening data packet is sent, and sending a third awakening data packet to the second slave equipment on a third frequency channel appointed by the second slave equipment;
a third receiving unit that receives a first continuous reception status signal transmitted by the first slave device on the second frequency channel and a second continuous reception status signal transmitted by the second slave device on the third frequency channel;
and the communication unit is used for communicating with the first slave equipment on the second frequency channel and communicating with the second slave equipment on the third frequency channel.
A wireless communication system, comprising:
a slave device, the slave device being the slave device;
and the master equipment is the first master equipment.
A wireless communication system, comprising:
a slave device, the slave device being the slave device;
and the master equipment is the second master equipment.
Compared with the prior art, the technical scheme of the invention has the following advantages:
1. according to the wireless communication method and the corresponding master device, the slave device and the wireless communication system thereof provided by the invention, when the slave device receives the first awakening data packet of the master device, the slave device enters the activated state, but at the moment, the slave device is not in the continuous receiving state, but periodically receives the second awakening data packet according to the second time interval, and the slave device does not enter the continuous receiving state until receiving the second awakening data packet sent by the master device. Compared with the prior art that the slave device is always in a continuous receiving state after receiving the first wake-up data packet sent by the master device and waits for the master device to send communication data, the wireless communication method can further reduce the average power consumption of the slave device.
2. According to the wireless communication method and the corresponding master device, the slave device and the wireless communication system, the master device wakes up the slave device by using the first frequency channel, communicates with the slave device on other frequency channels, and different slave devices correspond to different communication frequency channels, so that the master device can simultaneously communicate with different slave devices by using different communication frequency channels without mutual interference.
3. In a wireless communication system including two or more master devices and two or more slave devices, different slave devices correspond to different communication frequency channels, so that different master devices can communicate with corresponding slave devices through different communication frequency channels at the same time without mutual interference.
Drawings
FIG. 1 is a timing diagram illustrating a master-slave device communicating in the prior art;
fig. 2 is a flowchart illustrating a wireless communication method according to embodiment 1 of the present invention;
fig. 3 is a timing diagram illustrating a master device and a slave device in communication according to embodiment 1 of the present invention;
fig. 4 is a flowchart illustrating a wireless communication method according to embodiment 2 of the present invention;
fig. 5 is a flowchart illustrating a wireless communication method according to embodiment 3 of the present invention;
fig. 6 is a schematic structural diagram of a wireless communication slave device in embodiment 5 of the present invention;
fig. 7 is a schematic structural diagram of a wireless communication master device in embodiment 6 of the present invention;
fig. 8 is a schematic structural diagram of a wireless communication master device in embodiment 7 of the present invention.
Detailed Description
In order to make the content of the present invention better understood, the technical solutions provided by the present invention are further described in detail below with reference to the accompanying drawings and examples.
Example 1
As shown in fig. 2, the present embodiment provides a wireless communication method applied to a slave device in a wireless communication system, including the steps of:
s11: when the slave equipment is in a dormant state, periodically receiving a first awakening data packet sent by the master equipment at a first time interval on a first frequency channel;
s12: when the slave equipment receives a first awakening data packet sent by the main equipment, entering an activated state, sending an activated state signal to the main equipment on a first frequency channel, and switching to a second frequency channel appointed with the main equipment;
s13: the slave equipment periodically receives a second awakening data packet sent by the master equipment at a second frequency channel according to a second time interval, and enters a continuous receiving state when receiving the second awakening data packet;
s14: the slave device transmits a continuous reception status signal to the master device on the second frequency channel;
s15: and the slave device receives the communication data transmitted by the master device on the second frequency channel. And then, communication data can be sent to the master device to realize mutual communication.
As shown in fig. 3, when the master device needs to communicate with the slave device, the master device may periodically send a first wakeup packet with a duration of Ts to wake up the slave device in the sleep state, and the slave device waiting to be woken up in the sleep state may also periodically receive the first wakeup packet sent by the master device at a first time interval. When the slave device receives the first wake-up packet, the slave device enters an active state, but at this time, the slave device is not in a continuous receiving state, and because the master device needs to send the entire first wake-up packet before sending the communication data, the slave device may not receive the communication data sent by the master device immediately after entering the active state. If the master device is in a continuous receiving state and waits for the communication data to be sent, the waiting time is the time for consuming electric energy to do useless work. Therefore, the slave device entering the active state in the present invention will periodically receive the second wake-up packet sent by the master device after sending the first wake-up packet according to the second time interval, and the slave device will enter the continuous receiving state to receive the communication data after receiving the second wake-up packet. Compared with the prior art that the slave device is always in a continuous receiving state after receiving the first wake-up data packet sent by the master device and waits for the master device to send communication data, the wireless communication method can further reduce the average power consumption of the slave device. In addition, after the slave device enters the active state, the slave device is switched to a second channel appointed with the master device, and at this time, the slave device cannot receive the first wake-up data packet sent by the master device on the first channel, so that the slave device in the active state can periodically receive the second wake-up data packet again at the second time interval without being activated all the time and thus being in the receiving state all the time. However, if the slave device receives the communication data sent by the master device periodically at the second time interval, the slave device may miss part of the data, and therefore the master device needs to send a second wake-up packet before sending the communication data so that the slave device enters a continuous receiving state, so that the slave device can completely receive the communication data sent by the master device.
Specifically, the second time interval is preferably smaller than the first time interval in consideration of both power consumption and communication efficiency. Firstly, in order to reduce power consumption, a first time interval for periodically receiving a first wake-up packet sent by a master device by a slave device in a dormant state is set to be larger, otherwise, the effect of reducing power consumption is not obvious; secondly, the time that the slave device is in the activated state is inevitably shorter than the time Ts that the master device sends a single first wake-up packet, and considering the power consumption of the master device, the time Ts is inevitably not too long, so that the second time interval for periodically receiving the second wake-up packet sent by the master device when the slave device is in the activated state is set to be relatively small, so that the second wake-up packet can be received as soon as possible and enters a continuous receiving state, the communication efficiency is improved, and the number of times that the master device sends the second wake-up packet is reduced, thereby reducing the average power consumption of the master device.
In addition, mainly from the viewpoint of communication efficiency, the time for the master device to send a single first wake-up packet is preferably longer than the first time interval, and the time for the master device to send a single second wake-up packet is preferably longer than the second time interval, so that the slave device can receive the first wake-up packet and the second wake-up packet as soon as possible. The time for the master device to send a single first awakening data packet is 7-14s, the first time interval for the slave device to periodically receive the first awakening data packet is 7-13s, the time for the master device to send a single second awakening data packet is 500ms-2s, and the second time interval for the slave device to periodically receive the second awakening data packet is 500ms-1.5 s.
Example 2
As shown in fig. 4, the present embodiment provides a wireless communication method applied to a master device in a wireless communication system, including the steps of:
s21: the main equipment sends a first awakening data packet on a first frequency channel;
s22: the master device receives an activation state signal sent by the slave device on a first frequency channel;
s23: after the master device sends the first awakening data packet, the master device sends a second awakening data packet to the slave device on a second channel;
s24: the master device receives the continuous receiving state signal sent by the slave device on a second frequency channel;
s25: the master device transmits communication data to the slave device on the second frequency channel. Thereafter, the master device may receive the communication data transmitted from the slave device to perform mutual communication.
The slave device enters an active state after receiving the first wake-up packet sent by the master device, but at this time, the slave device is not in a continuous receiving state, but also periodically receives a second wake-up packet sent by the master device at a second time interval, and does not enter the continuous receiving state until it receives the second wake-up packet. Therefore, in order to avoid that the slave device always receives the first wake-up packet and is always in the receiving state, it is necessary to switch the receiving channel to the second channel after the slave device enters the active state, so that the first wake-up packet sent by the master device in the first channel is not received, and the data can be received only periodically. However, if the master device sends the communication data or the second wake-up packet on the first frequency channel after sending the first wake-up packet, the slave device does not receive the communication data or the second wake-up packet, so the master device must switch to the second frequency channel. The slave device in the active state only receives data periodically at the second time interval, and at this time, if the master device directly transmits the communication data, the slave device loses part of the communication data, so the master device needs to transmit a second wake-up packet to the slave device, so that the slave device enters a continuous receiving state to completely receive the communication data.
Example 3
As shown in fig. 5, the present embodiment provides a wireless communication method applied to a master device in a wireless communication system, the method being applicable to a case having two or more slave devices, and including the steps of:
s31: the method comprises the steps that a master device sends a first wake-up data packet to at least two slave devices on a first frequency channel, wherein the at least two slave devices comprise a first slave device and a second slave device;
s32: the master device receives a first activation state signal sent by a first slave device on a first frequency channel;
s33: the master device receives a second activation state signal sent by a second slave device on the first frequency channel;
s34: after the first awakening data packet is sent, the main device sends a second awakening data packet to the first slave device on a second frequency channel appointed with the first slave device, and sends a third awakening data packet to the second slave device on a third frequency channel appointed with the second slave device;
s35: receiving a first continuous receiving state signal transmitted by a first slave device on a second frequency channel, and receiving a second continuous receiving state signal transmitted by a second slave device on a third frequency channel;
s36: the first slave device is communicated with on the second frequency channel and the second slave device is communicated with on the third frequency channel.
In the prior art, only one frequency channel is used between each wireless communication device, so that a wireless communication system including a plurality of master-slave devices can only realize one-to-one mutual communication or one-to-many one-way communication. In the wireless communication method provided by this embodiment, the master device wakes up the slave device using the first frequency channel, communicates with the slave device on other frequency channels, and different slave devices correspond to different communication frequency channels, so that the master device can communicate with different slave devices simultaneously using different communication frequency channels without mutual interference.
Example 4
The embodiment provides a wireless communication method, which is applied to a wireless communication system, wherein the wireless communication system at least comprises a first master device, a second master device, a first slave device and a second slave device, and the method comprises the following steps:
step 1: the first main equipment sends a first awakening data packet on a first frequency channel;
step 2: the first slave device in the dormant state periodically receives a first wake-up data packet at a first time interval on a first frequency channel;
and 3, step 3: when the first slave equipment receives the first awakening data packet and then enters an activated state, a first activated state signal is sent to the first main equipment on the first frequency channel, and the first slave equipment is switched to a second frequency channel appointed with the first main equipment;
and 4, step 4: the first master device receiving a first active status signal on a first frequency channel;
and 5, step 5: after the first main device sends the first awakening data packet, sending a second awakening data packet to the first slave device on a second channel;
and 6, step 6: the first slave equipment receives a second awakening data packet periodically at a second time interval on a second frequency channel, and enters a continuous receiving state when receiving the second awakening data packet;
and 7, step 7: the first slave device sends a first continuous receiving state signal to the first master device in a second frequency channel;
and 8, step 8: the first master device receives a first continuous receiving state signal on a second frequency channel;
step 9: the first master device sends communication data to the first slave device on the second frequency channel;
step 10: the first slave device receives communication data sent by the first master device on a second frequency channel;
and 11, step 11: the second main device sends a third awakening data packet on the first frequency channel;
step 12: the second slave device in the dormant state periodically receives a third wake-up data packet at a third time interval on the first frequency channel;
step 13: when the second slave equipment receives the third wake-up data packet and then enters an activation state, a second activation state signal is sent to the second master equipment in the first channel, and the second slave equipment is switched to a third channel appointed with the second master equipment;
step 14: the second master device receiving a second active status signal on the first frequency channel;
step 15: after the second master device finishes sending the third awakening data packet, sending a fourth awakening data packet to the second slave device on the third frequency channel;
step 16: the second slave equipment receives a fourth awakening data packet periodically in a third channel according to a fourth time interval, and enters a continuous receiving state when receiving the fourth awakening data packet;
step 17: the second slave device sends a second continuous receiving state signal to the second master device in a third frequency channel;
step 18: the second master device receiving a second continuous reception status signal on a third frequency channel;
step 19: the second master device sends communication data to the second slave device on a third frequency channel;
step 20: the second slave device receives the communication data sent by the second master device on the third frequency channel, and then, the communication data can also be sent to the second master device to realize mutual communication.
In a wireless communication system including two or more master devices and two or more slave devices, different slave devices correspond to different communication frequency channels, so that different master devices can communicate with corresponding slave devices through different communication frequency channels at the same time without mutual interference.
In another specific embodiment, after the first slave device enters an active state after receiving the first wake-up packet sent by the first master device, sends an active state signal to the first master device, and switches to the second frequency channel agreed with the first master device, the second master device may send the first wake-up packet on the first frequency channel to communicate with the second slave device. Thus, the second master device can communicate with the second slave device while the first master device communicates with the first slave device.
Example 5
As shown in fig. 6, the present embodiment provides a wireless communication slave device, including:
a first wake-up packet receiving unit M11, configured to receive, periodically at a first time interval, a first wake-up packet sent by a host device on a first frequency channel when the first wake-up packet receiving unit is in a sleep state;
the sending and switching unit M12, entering an active state after receiving the first wake-up packet, configured to send an active state signal to the host device on the first channel, and switch to a second channel agreed with the host device;
a second wakeup data packet receiving unit M13, configured to receive a second wakeup data packet periodically at a second time interval on a second frequency channel, and enter a continuous receiving state when receiving the second wakeup data packet;
a continuous reception status signal transmitting unit M14 for transmitting a continuous reception status signal to the master device on the second frequency channel;
and a communication data receiving unit M15, configured to receive the communication data sent by the master device on the second frequency channel.
In order to avoid that the slave device is always in the receiving state and consumes power after entering the active state, in the wireless communication system provided in this embodiment, the slave device switches its receiving channel to the second channel after entering the active state, and at this time, it cannot receive the first wakeup data packet sent by the master device in the first channel, so that it can periodically receive the second wakeup data packet sent by the master device at the second time interval, and after receiving the second wakeup data packet, it enters the continuous receiving state to completely receive the communication data sent by the master device, thereby further reducing the average power consumption of the communication device.
Example 6
As shown in fig. 7, the present embodiment provides a wireless communication master device including:
a first wake-up packet sending unit M21, configured to send a first wake-up packet on a first frequency channel;
an activation status signal receiving unit M22 for receiving an activation status signal transmitted from a device on a first frequency channel;
a second wake-up packet sending unit M23, configured to send a second wake-up packet to the slave device on a second channel after sending the first wake-up packet;
a continuous reception status signal receiving unit M24 for receiving a continuous reception status signal transmitted from the device on the second frequency channel;
and a communication data transmitting unit M25 for transmitting communication data to the slave device on the second frequency channel.
After the slave device switches to the second frequency channel to avoid being repeatedly awakened by the first awakening data packet, the master device also needs to switch to the second frequency channel corresponding to the slave device in order to successfully communicate with the slave device. In addition, in order to enable the slave device to receive the communication data completely without missing, the master device needs to transmit a second wakeup packet so that the slave device enters a continuous reception state from an active state in which the slave device receives data periodically at a second time interval.
Example 7
As shown in fig. 8, the present embodiment provides a wireless communication master device including:
a first sending unit M31, configured to send a first wake-up packet to at least two slave devices on a first frequency channel, where the at least two slave devices include a first slave device and a second slave device;
a first receiving unit M32, configured to receive a first activation status signal sent by a first slave device on a first frequency channel;
a second receiving unit M33, configured to receive a second activation status signal sent by a second slave device on the first frequency channel;
a second sending unit M34, configured to send, after sending the first wake-up packet, a second wake-up packet to the first slave device on a second frequency channel agreed with the first slave device, and send a third wake-up packet to the second slave device on a third frequency channel agreed with the second slave device;
a third receiving unit M35 configured to receive the first continuous reception status signal transmitted from the first slave device on the second frequency channel and receive the second continuous reception status signal transmitted from the second slave device on the third frequency channel;
the communication unit M36 communicates with the first slave device on the second frequency channel and communicates with the second slave device on the third frequency channel.
In the wireless communication system provided by this embodiment, the master device wakes up the slave device using the first frequency channel, communicates with the slave device on other frequency channels, and different slave devices correspond to different communication frequency channels, so that the master device can communicate with different slave devices simultaneously using different communication frequency channels without mutual interference.
Example 8
This embodiment provides a wireless communication system including the slave device described in embodiment 5 and the master device described in embodiment 6.
Example 9
This embodiment provides a wireless communication system including at least two slave devices described in embodiment 5 and a master device described in embodiment 7.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (10)
1. A wireless communication method applied to a slave device in a wireless communication system, the method comprising the steps of:
when the first channel is in a dormant state, a first awakening data packet sent by the main equipment is periodically received at a first time interval on the first channel;
when the first awakening data packet is received and then enters an activated state, an activated state signal is sent to the main equipment on the first channel, and the first channel is switched to a second channel appointed with the main equipment;
receiving a second awakening data packet sent by the main equipment periodically at a second time interval on the second frequency channel, and entering a continuous receiving state when receiving the second awakening data packet;
transmitting a continuous reception status signal to the master device on the second frequency channel;
and receiving communication data sent by the main equipment on the second frequency channel.
2. The method of claim 1, wherein the second time interval is less than the first time interval.
3. A wireless communication method applied to a master device in a wireless communication system, the method comprising the steps of:
sending a first wake-up packet on a first channel;
receiving an activation status signal transmitted from a device on the first frequency channel;
after the first awakening data packet is sent, sending a second awakening data packet to the slave equipment on a second channel;
receiving a continuous reception status signal transmitted by the slave device on the second frequency channel;
and transmitting communication data to the slave device on the second frequency channel.
4. A wireless communication method applied to a master device in a wireless communication system, the method comprising the steps of:
transmitting a first wake-up packet to at least two slave devices on a first frequency channel, the at least two slave devices including a first slave device and a second slave device;
receiving a first activation status signal transmitted by the first slave device on the first frequency channel;
receiving a second activation status signal transmitted by the second slave device on the first frequency channel;
after the first awakening data packet is sent, sending a second awakening data packet to the first slave device on a second frequency channel appointed with the first slave device, and sending a third awakening data packet to the second slave device on a third frequency channel appointed with the second slave device;
receiving a first continuous receiving state signal transmitted by the first slave device on the second frequency channel, and receiving a second continuous receiving state signal transmitted by the second slave device on the third frequency channel;
communicating with the first slave device on the second frequency channel and communicating with the second slave device on the third frequency channel.
5. A wireless communication method applied to a wireless communication system including at least a first master device, a second master device, a first slave device and a second slave device, the method comprising the steps of:
the first main device sends a first awakening data packet on a first frequency channel;
the first slave device in a dormant state receives the first wake-up data packet periodically at a first time interval on the first frequency channel;
when the first slave device enters an activation state after receiving the first wake-up data packet, sending a first activation state signal to the first master device on the first channel, and switching to a second channel appointed with the first master device;
the first master device receiving the first activation status signal on the first frequency channel;
after the first master device finishes sending the first awakening data packet, sending a second awakening data packet to the first slave device on the second channel;
the first slave device receives the second awakening data packet periodically at a second time interval on the second frequency channel, and enters a continuous receiving state when receiving the second awakening data packet;
the first slave device sends a first continuous receiving state signal to the first master device on the second frequency channel;
the first master device receiving the first continuous reception status signal on the second frequency channel;
the first master device sends communication data to the first slave device on the second frequency channel;
the first slave device receives communication data sent by the first master device on the second frequency channel;
the second main device sends a third wake-up data packet on the first frequency channel;
the second slave device in the sleep state periodically receives the third wake-up packet at a third time interval on the first frequency channel;
when the second slave device enters an activation state after receiving the third wake-up data packet, sending a second activation state signal to the second master device on the first channel, and switching to a third channel appointed with the second master device;
the second master device receiving the second activation status signal on the first frequency channel;
after the second master device finishes sending the third wake-up data packet, sending a fourth wake-up data packet to the second slave device on the third channel;
the second slave device receives the fourth awakening data packet periodically in the third channel according to a fourth time interval, and enters a continuous receiving state when receiving the fourth awakening data packet;
the second slave device sends a second continuous receiving state signal to the second master device in the third channel;
the second master device receiving the second continuous reception status signal on the third frequency channel;
the second master device sends communication data to the second slave device on the third frequency channel;
and the second slave equipment receives the communication data transmitted by the second master equipment on the third frequency channel.
6. A wireless communication slave device, comprising:
the first awakening data packet receiving unit is used for periodically receiving a first awakening data packet sent by the main equipment at a first frequency channel according to a first time interval when the first awakening data packet receiving unit is in a dormant state;
the sending and switching unit enters an activation state after receiving the first awakening data packet, is used for sending an activation state signal to the main equipment on the first channel, and is switched to a second channel appointed with the main equipment;
a second wake-up packet receiving unit, configured to periodically receive, on the second frequency channel, a second wake-up packet sent by the master device at a second time interval, and enter a continuous receiving state when receiving the second wake-up packet;
a continuous reception status signal transmitting unit, configured to transmit a continuous reception status signal to the master device on the second frequency channel;
and the communication data receiving unit is used for receiving the communication data sent by the main equipment on the second frequency channel.
7. A wireless communication master device, comprising:
a first wake-up packet sending unit, configured to send a first wake-up packet on a first channel;
an activation state signal receiving unit for receiving an activation state signal transmitted from a device on the first frequency channel;
a second wake-up packet sending unit, configured to send a second wake-up packet to the slave device on a second channel after sending the first wake-up packet;
a continuous receiving status signal receiving unit, configured to receive a continuous receiving status signal sent by the slave device on the second frequency channel;
and the communication data sending unit is used for sending communication data to the slave equipment on the second frequency channel.
8. A wireless communication master device, comprising:
a first sending unit, configured to send a first wake-up packet to at least two slave devices on a first frequency channel, where the at least two slave devices include a first slave device and a second slave device;
a first receiving unit, configured to receive a first activation status signal sent by the first slave device on the first frequency channel;
a second receiving unit, configured to receive, on the first frequency channel, a second activation status signal sent by the second slave device;
a second sending unit, configured to send a second wake-up packet to the first slave device on a second frequency channel agreed with the first slave device after sending the first wake-up packet, and send a third wake-up packet to the second slave device on a third frequency channel agreed with the second slave device;
a third receiving unit, configured to receive a first continuous reception status signal transmitted by the first slave device on the second frequency channel, and receive a second continuous reception status signal transmitted by the second slave device on the third frequency channel;
a communication unit that communicates with the first slave device on the second frequency channel and communicates with the second slave device on the third frequency channel.
9. A wireless communication system, comprising:
a slave device, the slave device as recited in claim 6;
a master device as claimed in claim 7.
10. A wireless communication system, comprising:
a slave device, the slave device as recited in claim 6;
a master device as claimed in claim 8.
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| CN108668344B (en) * | 2017-04-01 | 2021-05-14 | 华为技术有限公司 | Access method, station and access point |
| CN108923819B (en) | 2017-04-24 | 2020-04-21 | 广东虚拟现实科技有限公司 | Communication connection method, equipment and system |
| CN115150916A (en) * | 2021-03-30 | 2022-10-04 | 内蒙古显鸿科技股份有限公司 | Wireless networking method and wireless networking system |
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