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CN-122002544-A - Time domain scheduling method, device and system

CN122002544ACN 122002544 ACN122002544 ACN 122002544ACN-122002544-A

Abstract

A time domain scheduling method, device and system belong to the technical field of communication. The method comprises the steps that after the control node sends an mth scheduling message to the first network node, the control node receives a feedback message which is sent by the first network node and used for indicating the first occupancy rate, and sends an (m+1) th scheduling message to the first network node. The m-th scheduling message is used for indicating a first air interface resource allocated to the first network node, the first network node is any network node in at least one network node, the first occupancy rate is the occupancy rate of first data to the first air interface resource, the first data are data transmitted after the first network node competes to the air interface on the first air interface resource, the m+1th scheduling message is used for indicating a second air interface resource allocated to the first network node, and the resource difference between the second air interface resource and the first air interface resource is directly related to the first occupancy rate. The method and the device can improve the sending efficiency in the network, and are used for time domain scheduling of the network nodes.

Inventors

  • QIU HAO
  • SI XIAOSHU
  • WANG WEIJIE

Assignees

  • 华为技术有限公司

Dates

Publication Date
20260508
Application Date
20241104

Claims (19)

  1. 1. A time domain scheduling method, the method being performed by a control node, the method comprising: The method comprises the steps of sending an mth scheduling message to a first network node, wherein the mth scheduling message is used for indicating a first air interface resource allocated to the first network node, and m is more than or equal to 1; receiving a feedback message sent by the first network node and used for indicating a first occupancy rate, wherein the first occupancy rate is the occupancy rate of first data to the first air interface resource, and the first data is data transmitted after the first network node competes to an air interface on the first air interface resource; and sending an m+1th scheduling message to the first network node, wherein the m+1th scheduling message is used for indicating a second air interface resource allocated to the first network node, and the resource difference between the second air interface resource and the first air interface resource is related to the first occupancy rate.
  2. 2. The method of claim 1, wherein the amount of resources of the second air interface resource is equal to the amount of resources of the first air interface resource when the first occupancy falls within an occupancy range; When the first occupancy rate is larger than the maximum value in the occupancy rate range, the resource amount of the second air interface resource is larger than the resource amount of the first air interface resource; And when the first occupancy rate is smaller than the minimum value in the occupancy rate range, the resource amount of the second air interface resource is smaller than the resource amount of the first air interface resource.
  3. 3. The method according to claim 1 or 2, wherein the time domain of the air interface resource indicated by the mth scheduling message received by at least two of the at least one network node is different and the frequency domain is the same.
  4. 4. A method according to any one of claims 1 to 3, wherein the first air-interface resource and the second air-interface resource each comprise a third air-interface resource.
  5. 5. The method according to any of claims 1 to 4, wherein the set of air interface resources indicated by the mth scheduling message received by the at least one network node is the same as the set of air interface resources indicated by the (m+1) th scheduling message received by the at least one network node.
  6. 6. The method according to any of claims 1 to 5, wherein the feedback message comprises the first occupancy.
  7. 7. The method according to any one of claims 1 to 5, wherein the feedback message includes information of a frequency band size occupied by the first data in the first air interface resource, and an air interface duration occupied by the first data in the first air interface resource.
  8. 8. The method according to any one of claims 1 to 7, wherein said sending an mth scheduling message to a first network node comprises sending said mth scheduling message to said first network node at a first time instant; the first moment is before a time period occupied by a set of air interface resources indicated by an mth scheduling message received by the at least one network node, or the first moment is a starting moment of the time period occupied by the first air interface resources.
  9. 9. The method according to any of claims 1 to 8, wherein the control node and the at least one network node each belong to a fiber-to-room FTTR network.
  10. 10. A time domain scheduling method, the method being performed by a first network node, the first network node being any one of at least one network node, the method comprising: receiving an mth scheduling message sent by a control node, wherein m is more than or equal to 1, and the mth scheduling message is used for indicating a first air interface resource allocated to the first network node; Competing for an air interface on the first air interface resource according to the mth scheduling message, and transmitting first data on the contended air interface; sending a feedback message for indicating a first occupancy rate to the control node, wherein the first occupancy rate is the occupancy rate of the first data to the first air interface resource; Receiving an (m+1) th scheduling message sent by the control node, wherein the (m+1) th scheduling message is used for indicating a second air interface resource allocated to the first network node, and the resource difference between the second air interface resource and the first air interface resource is just related to the first occupancy rate; and competing for an air interface on the second air interface resource according to the (m+1) th scheduling message, and transmitting second data on the contended air interface.
  11. 11. The method of claim 10, wherein the amount of resources of the second air interface resource is equal to the amount of resources of the first air interface resource when the first occupancy falls within an occupancy range; When the first occupancy rate is larger than the maximum value in the occupancy rate range, the resource amount of the second air interface resource is larger than the resource amount of the first air interface resource; And when the first occupancy rate is smaller than the minimum value in the occupancy rate range, the resource amount of the second air interface resource is smaller than the resource amount of the first air interface resource.
  12. 12. The method of claim 10 or 11, wherein the first air interface resource and the second air interface resource each comprise a third air interface resource.
  13. 13. The method according to any of claims 10 to 12, wherein the feedback message comprises the first occupancy.
  14. 14. The method according to any of claims 10 to 12, wherein the feedback message comprises information of a size of a frequency band occupied by the first data in the first air interface resource, and an air interface duration occupied by the first data in the first air interface resource.
  15. 15. The method according to any one of claims 10 to 14, wherein the receiving the mth scheduling message sent by the control node includes receiving the mth scheduling message sent by the control node at a first time; the first moment is before a time period occupied by a set of air interface resources indicated by an mth scheduling message received by the at least one network node, or the first moment is a starting moment of the time period occupied by the first air interface resources.
  16. 16. The method according to any of claims 10 to 15, wherein the control node and the at least one network node each belong to a fiber-to-room FTTR network.
  17. 17. A time domain scheduling device, wherein the time domain scheduling device belongs to a control node, the time domain scheduling device comprising: The first sending module is used for sending an mth scheduling message to a first network node, wherein the mth scheduling message is used for indicating a first air interface resource allocated to the first network node, and m is more than or equal to 1; A receiving module, configured to receive a feedback message sent by the first network node and used to indicate a first occupancy rate, where the first occupancy rate is an occupancy rate of first data on the first air interface resource, and the first data is data transmitted after the first network node competes for an air interface on the first air interface resource; The second sending module is configured to send an (m+1) th scheduling message to the first network node, where the (m+1) th scheduling message is used to indicate a second air interface resource allocated to the first network node, and a resource difference between the second air interface resource and the first air interface resource is exactly related to the first occupancy rate.
  18. 18. A time domain scheduling device, wherein the time domain scheduling device belongs to a first network node, the first network node is any network node in at least one network node, the time domain scheduling device comprises: the first receiving module is used for receiving an mth scheduling message sent by the control node, wherein m is more than or equal to 1, and the mth scheduling message is used for indicating a first air interface resource allocated to the first network node; The first competition module is used for competing an air interface on the first air interface resource according to the mth scheduling message and transmitting first data on the contended air interface; a sending module, configured to send a feedback message to the control node, where the feedback message is used to indicate a first occupancy rate, where the first occupancy rate is an occupancy rate of the first data on the first air interface resource; A second receiving module, configured to receive an (m+1) th scheduling message sent by the control node, where the (m+1) th scheduling message is used to indicate a second air interface resource allocated to the first network node, and a resource difference between the second air interface resource and the first air interface resource is just related to the first occupancy rate; And the second competition module is used for competing an air interface on the second air interface resource according to the (m+1) th scheduling message and transmitting second data on the contended air interface.
  19. 19. A time domain scheduling system, characterized in that the time domain scheduling system comprises a control node and at least one network node; the control node is configured to perform the time domain scheduling method of any one of claims 1 to 9; Any of the at least one network node is a first network node for performing the time domain scheduling method of any of claims 10 to 16.

Description

Time domain scheduling method, device and system Technical Field The present application relates to the field of communications technologies, and in particular, to a time domain scheduling method, apparatus, and system. Background Currently in wireless local area networks (wireless local area network, WLANs), wireless fidelity (WIRELESS FIDELITY, wi-Fi) channels are commonly shared by Access Points (APs) and Stations (STAs). The AP and STA each use a set of enhanced distributed channel access (enhanced distribution CHANNEL ACCESS, EDCA) parameters to compete for the Wi-Fi channel for transmission opportunities. The AP may adjust EDCA parameters by determining the network status. However, with the development of networks, more devices in a home network, the probability that multiple devices compete for Wi-Fi channels at the same time is also increasing. Multiple devices competing for Wi-Fi channels at the same time may generate random backoff conflict, resulting in packet failure, reducing network throughput, and increasing service delay. Therefore, how to avoid random back-off collision of the air interface, it is worth researching to improve the transmission efficiency in the network. Disclosure of Invention The time domain scheduling method, the time domain scheduling device and the time domain scheduling system are beneficial to avoiding random back-off conflict of an air interface and improving the transmission efficiency in a network. In a first aspect, the application provides a time domain scheduling method, which is executed by a control node, and the method comprises the steps that the control node receives a feedback message which is sent by a first network node and is used for indicating a first occupancy rate after sending an mth scheduling message to the first network node, and sends an (m+1) th scheduling message to the first network node. The m scheduling message is used for indicating a first air interface resource allocated to the first network node, m is more than or equal to 1, the first network node is any one of at least one network node, the first occupancy rate is the occupancy rate of first data to the first air interface resource, the first data is data transmitted after the first network node competes to an air interface on the first air interface resource, the (m+1) th scheduling message is used for indicating a second air interface resource allocated to the first network node, and the resource difference between the second air interface resource and the first air interface resource is just related to the first occupancy rate. In the time domain scheduling method provided by the embodiment of the application, when the control node performs time domain scheduling on the at least one network node, air interface resources (also called centralized scheduling) are allocated to each network node, and a scheduling message for indicating the air interface resources allocated to the network node is sent to the network node. The network node may contend for an air interface (i.e., a channel, so contend for an air interface, i.e., a contention channel) on the air interface resource indicated by the scheduling message and transmit data on the contended air interface after contending for the air interface. Therefore, the air interface resources of the network nodes competing for the air interface are distributed by the control node, centralized control of at least one network node can be realized through the control node, each network node is instructed to compete for the air interface on the corresponding air interface resources through the scheduling message sent by the control node, and then after competing for the air interface, data are transmitted on the competing air interface. Therefore, random back-off conflict among network nodes is avoided, and interference among the air interfaces of the network nodes is reduced. In addition, when the first occupancy rate belongs to the occupancy rate range, it is stated that the resource amount of the first air interface resource may just be enough when the first network node transmits data next time, and the control node does not need to increase or decrease the resource amount of the air interface resource (the second air interface resource) allocated to the first network node next time. When the first occupancy rate is greater than the maximum value in the occupancy rate range, it is indicated that the resource amount of the first air interface resource may not be enough when the first network node transmits data next time, and the control node needs to increase the resource amount only when the air interface resource (the second air interface resource) allocated to the first network node next time. When the first occupancy rate is smaller than the minimum value in the occupancy rate range, the resource amount of the first air interface resource may be used and surplus when the first network node transmits data next time, and the control node n