CN-122002542-A - Airspace scheduling method, device and system

Abstract

A airspace scheduling method, device and system belong to the technical field of communication. The method comprises the steps that a control node receives a second pre-scheduling request sent by a network node when the network node does not receive scheduling information sent by the control node within a first timeout period after the first pre-scheduling request is sent, and space domain scheduling is started to be carried out on the network node according to the second pre-scheduling request. The scheduling message is used for indicating air interface resources allocated to the network node in the airspace resources. The application can solve the problem that the network node is affected in transmitting data on the channel, and is used for carrying out space domain scheduling on the network node.

Inventors

• CHEN TAOTAO
• LI JIAN
• WANG ZHIMIN

Assignees

• 华为技术有限公司

Dates

Publication Date

20260508

Application Date

20241104

Claims (17)

1. 1. A method of spatial scheduling, the method performed by a control node, the method comprising: Receiving a second pre-scheduling request sent by a network node when a scheduling message sent by the control node is not received within a first timeout period after the first pre-scheduling request is sent, wherein the scheduling message is used for indicating air interface resources allocated to the network node in an air space resource; and starting to perform space domain scheduling on the network node according to the second pre-scheduling request.
2. 2. The method according to claim 1, wherein the method further comprises: receiving the first pre-scheduling request sent by the network node before receiving the second pre-scheduling request; and starting to perform space domain scheduling on the network node according to the first pre-scheduling request.
3. 3. The method according to claim 1 or 2, characterized in that the method further comprises: and before sending the second prescheduling request, sending a configuration message for indicating the first timeout duration to the network node.
4. 4. A method according to claim 3, characterized in that the payload of the configuration message is used to indicate the first timeout period.
5. 5. The method according to any one of claims 1 to 4, further comprising: And when the transmission completion message sent by the network node is not received within the second timeout period after the scheduling message is sent, releasing the scheduling resource used for scheduling the network node in the control node, wherein the transmission completion message is used for indicating the network node to complete the transmission of data.
6. 6. The method of any one of claims 1 to 5, wherein the control node and the network node each belong to a fiber-to-room FTTR network.
7. 7. The method of any of claims 1-6, wherein the first prescheduling request and the second prescheduling request are the same.
8. 8. The method according to any one of claims 1 to 7, wherein the first prescheduling request message includes a sequence number field, a network node identification field, a station STA number field, a STA identification field, and a scheduling request duration field; The sequence number field is used for indicating a sequence number of the first prescheduling request message; the network node identification field is used for indicating the identification of the network node; the STA number field is used to indicate the number of STAs that the network node needs to communicate; The STA identification field is used for indicating an identification of an STA that the network node needs to communicate with; The scheduling request duration field is used for indicating the duration of the air interface resource to be allocated.
9. 9. A method of spatial domain scheduling, the method performed by a network node, the method comprising: Sending a first prescheduling request to the control node; And when the scheduling message sent by the control node is not received within a first timeout period after the first pre-scheduling request is sent, sending a second pre-scheduling request to the control node, wherein the scheduling message is used for indicating air interface resources allocated to the network node in the airspace resources.
10. 10. The method according to claim 9, wherein the method further comprises: And receiving a configuration message sent by the control node, wherein the configuration message is used for indicating the first timeout duration.
11. 11. The method of claim 10, wherein a payload of the configuration message is used to indicate the first timeout period.
12. 12. The method according to any of claims 9 to 11, wherein the control node and the network node each belong to a fiber-to-room FTTR network.
13. 13. The method according to any of claims 9 to 12, wherein the first pre-scheduling request and the second pre-scheduling request are the same.
14. 14. The method according to any one of claims 9 to 13, wherein the first prescheduling request message comprises a sequence number field, a network node identification field, a station STA number field, a STA identification field, and a scheduling request duration field; The sequence number field is used for indicating a sequence number of the first prescheduling request message; the network node identification field is used for indicating the identification of the network node; the STA number field is used to indicate the number of STAs that the network node needs to communicate; The STA identification field is used for indicating an identification of an STA that the network node needs to communicate with; The scheduling request duration field is used for indicating the duration of the air interface resource to be allocated.
15. 15. A spatial domain scheduling device, wherein the spatial domain scheduling device belongs to a control node, the spatial domain scheduling device comprising: The first receiving module is used for receiving a second pre-scheduling request sent by the control node when the network node does not receive the scheduling message sent by the control node within a first timeout period after the first pre-scheduling request is sent, wherein the scheduling message is used for indicating air interface resources allocated to the network node in the air space resources; And the scheduling module is used for starting to perform space domain scheduling on the network node according to the second pre-scheduling request.
16. 16. A spatial domain scheduling device, wherein the spatial domain scheduling device belongs to a network node, the spatial domain scheduling device comprising: A first sending module, configured to send a first prescheduling request to the control node; And the second sending module is used for sending a second pre-scheduling request to the control node when the scheduling message sent by the control node is not received within a first timeout period after the first pre-scheduling request is sent, wherein the scheduling message is used for indicating air interface resources allocated to the network node in the air space resources.
17. 17. A scheduling system, characterized in that the system comprises a control node and a network node; The control node is configured to perform the spatial domain scheduling method according to any one of claims 1 to 8; The network node is configured to perform the spatial scheduling method of any one of claims 9 to 14.

Description

Airspace scheduling method, device and system Technical Field The present application relates to the field of communications technologies, and in particular, to a method, an apparatus, and a system for spatial domain scheduling. Background With the development of communication technology, each network node gradually self-competes for channels on air interface resources, and evolves into competing for channels on air interface resources under the scheduling of the control node. When the network node contends for the channel on the air interface resource under the scheduling of the control node, the network node may send a pre-scheduling request to the control node, and the control node may send a scheduling message to the network node according to the pre-scheduling request to instruct the network node to contend for the channel on the air interface resource. However, for some reasons, the pre-scheduling request sent by the network node may not be successfully transmitted to the control node, or the scheduling message sent by the control node may not be successfully transmitted to the network node, so that the network node cannot compete for the channel on the air interface resource based on the scheduling message, thereby affecting the transmission of data on the channel by the network node. Disclosure of Invention The application provides a airspace scheduling method, device and system, which can solve the problem that network nodes are affected in transmitting data on channels. In a first aspect, the application provides a spatial domain scheduling method, which is executed by a control node, wherein the method comprises the steps that the control node receives a second pre-scheduling request sent by a network node when the network node does not receive a scheduling message sent by the control node within a first timeout period after sending a first pre-scheduling request, and starts to perform spatial domain scheduling on the network node according to the second pre-scheduling request. The scheduling message is used for indicating air interface resources allocated to the network node in the airspace resources. In the airspace scheduling method provided by the embodiment of the application, after the network node sends the first pre-scheduling request to the control node, whether the scheduling message sent by the control node is received within the first timeout period after the first pre-scheduling request is sent can be detected. If the scheduling message is not received within the first timeout period, it is indicated that the first pre-scheduling request may not be successfully transmitted to the control node, or the scheduling message may not be successfully transmitted to the network node, or the control node fails and does not send the scheduling message. At this time, the network node may send a second prescheduling request to the control node to request the control node to perform airspace scheduling on the network node again, so as to improve the probability that the network node receives the scheduling message, and reduce the influence on the data transmission of the network node on the air interface. The pre-scheduling request is used for requesting the control node to perform spatial scheduling on the network node. When the control node performs space 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. When the at least one network node includes a plurality of network nodes, the air interface resources allocated by different network nodes may be the same or different, which is not limited in the embodiment of the present application. For example, the time and/or frequency domains of the air interface resources allocated by at least two network nodes are different. It can be seen that, the air interface resources of the network node competing for the air interface are allocated by the control node, and centralized control on the at least one network node can be realized by the control node, so that the scheduling message sent by the control node indicates each network node to compete for the air interface on the corresponding air interface resources, and then after competing for the air interface, data is transmitted on the competing air interface. In this way, random back-off collision among network nodes is avoided, interference among air interfaces of the network nodes is reduced, air interface efficiency is improved, retransmission rate is reduced, time delay is reduced, and throughput is i