State switching method and apparatus
Embodiments of the present invention disclose a state switching method and apparatus. The state switching method includes: receiving, by a first network node, a preset frame sent by a second network node, where the preset frame includes indication information used to indicate an on/off state of a main transceiver and/or a wake up receiver of the first network node immediately, after a specified time point, or within a specified time period; and controlling, by the first network node based on the indication information, to switch an on/off state of the main transceiver and/or the wake up receiver of the first network node. According to the embodiments of the present invention, energy is saved by using a preset frame to indicate an on/off state of a main transceiver and/or a wake up receiver of a network node after a specified time point or within a specified time period.
1. A state switching method, comprising:
receiving, by a first network node, a preset frame sent by a second network node, the preset frame comprising indication information indicating to switch on a main transceiver of the first network node immediately, after a specified time point, or within a specified time period;
controlling, by the first network node, to switch on the main transceiver of the first network node, based on the indication information to perform data communication; and
controlling, by the first network node, to switch off a wake up receiver when the data communication performed by the main transceiver meets a preset condition, wherein the preset condition is that the main transceiver successfully exchanges data with the second network node, wherein the wake up receiver is configured to wake up the main receiver.
2. The method according to claim 1 , the preset frame comprises an 802.11 frame or a wake up packet, the main transceiver of the first network node receives the 802.11 frame, and the wake up receiver of the first network node receives the wake up packet.
3. The method according to claim 1 , wherein the preset frame is the 802.11 frame, and the indication information comprises an identifier indicating that the second network node has no buffer data to be sent to the first network node.
4. The method according to claim 1 , wherein the main transceiver successfully exchanges data with the second network node, comprising:
the second network node sends data to the first network node, and the first network node returns an acknowledgement frame after correctly receiving the data; or
the first network node sends a control frame to notify the second network node that the main transceiver of the second network node is woken up.
5. A state switching apparatus, applied to a first network node, wherein the apparatus comprises:
a transceiver unit, configured to receive a preset frame sent by a second network node, the preset frame comprising indication information indicating to switch on a main transceiver of the first network node immediately, after a specified time point, or within a specified time period; and
a processing unit, configured to
control to switch on the the main transceiver of the first network node, based on the indication information, to perform data communication; and
control, by the first network node, to switch off the wake up receiver when the data communication performed by the main transceiver meets a preset condition, wherein the wake up receiver is configured to wake up the main receiver.
6. The apparatus according to claim 5 , the preset frame comprises an 802.11 frame or a wake up packet, the main transceiver of the first network node receives the 802.11 frame, and the wake up receiver of the first network node receives the wake up packet.
7. The method according to claim 1 , the indication information is located in a signaling field which is encapsulated in the frame body, or the indication information is implied in the wake up type of the MAC header.
8. The apparatus according to claim 5 , the indication information is located in a signaling field which is encapsulated in the frame body, or the indication information is implied in the wake up type of the MAC header.
9. The apparatus according to claim 5 , wherein the preset frame is the 802.1 f frame, and the indication information comprises an identifier indicating that the second network node has no buffer data to be sent to the first network node; and
the processing unit is configured to control to switch an on/off state of the main transceiver and/or the wake up receiver of the first network node, based on the indication information.
10. The apparatus according to claim 5 , wherein the main transceiver successfully exchanges data with the second network node, comprising:
the second network node sends data to the first network, node, and the first network node returns an acknowledgement frame after correctly receiving the data; or
the first network node sends a control frame to notify the second network node that the main transceiver of the second network node is woken up.