Early indication of a message type for unmanned aerial vehicles
Methods, systems, and devices for wireless communication are described. An aerial vehicle (a transmitting device) may transmit control information that indicates a message type of a message. The message type may be one of multiple aerial vehicle broadcast message types, such as an aerial vehicle-to-aerial vehicle message type or an aerial vehicle-to-terrestrial user equipment (UE) message type. The transmitting device may transmit the message to a receiving device (e.g., another aerial vehicle or a terrestrial UE) in accordance with the indicated message type. For example, the transmitting device may transmit an aerial vehicle-to-aerial vehicle message to another nearby aerial vehicle or an aerial vehicle-to-terrestrial UE message to a terrestrial UE. As such, a receiving device may be aware of a message type and determine whether to decode the message accordingly.
1 . An apparatus for wireless communication at a transmitting device of an aerial vehicle, comprising:
one or more processors;
one or more memories coupled with the one or more processors; and
instructions stored in the one or more memories and executable by the one or more processors to cause the apparatus to:
transmit control information that indicates a message type of a message, wherein the message type indicated by the control information is one of a plurality of aerial vehicle broadcast message types and the control information is indicative of the message type using a destination identifier, a source identifier, or combination thereof, wherein the source identifier includes a first portion that is in sidelink control information and a second portion that is in a medium access control subheader; and
transmit the message in accordance with the indicated message type.
2 . The apparatus of claim 1 , wherein the destination identifier is a common destination identifier that is common regardless of whether the message type is a first type of the plurality of aerial vehicle broadcast message types or a second type of the plurality of aerial vehicle broadcast message types, wherein the control information is indicative of the message type through at least one of a quality-of-service profile associated with the message, a reserved periodicity associated with the message, or a source identifier associated with one of the first type of the plurality of aerial vehicle broadcast message types or the second type of the plurality of aerial vehicle broadcast message types.
3 . The apparatus of claim 1 , wherein the destination identifier is a common destination identifier that is common regardless of whether the message type is a first type of the plurality of aerial vehicle broadcast message types or a second type of the plurality of aerial vehicle broadcast message types, wherein the control information is indicative of the message type through a set of priority bits associated with the message.
4 . The apparatus of claim 1 , wherein the destination identifier is a common destination identifier that is common regardless of whether the message type is a first type of the plurality of aerial vehicle broadcast message types or a second type of the plurality of aerial vehicle broadcast message types, wherein the control information is indicative of the message type through a resource reservation period associated with a periodicity of the message.
5 . The apparatus of claim 1 , wherein the control information is indicative of the message type through one of a first common destination identifier associated with a first type of the plurality of aerial vehicle broadcast message types or a second common destination identifier associated with a second type of the plurality of aerial vehicle broadcast message types, wherein at least one of the first common destination identifier or the second common destination identifier is specific to a geographic region in which the aerial vehicle transmits the control information.
6 . The apparatus of claim 5 , wherein the control information includes a source-layer identifier in addition to one of the first common destination identifier or the second common destination identifier.
7 . The apparatus of claim 1 , wherein the control information is indicative of the message type through one of a first source identifier associated with a first type of the plurality of aerial vehicle broadcast message types or a second source identifier associated with a second type of the plurality of aerial vehicle broadcast message types, wherein at least one of the first source identifier or the second source identifier is specific to a geographic region in which the aerial vehicle transmits the control information.
8 . The apparatus of claim 1 , wherein both the first portion of the source identifier and the second portion of the source identifier are indicative of the message type.
9 . The apparatus of claim 1 , wherein the first portion of the source identifier is indicative of the message type, and wherein the second portion of the source identifier is not indicative of the message type.
10 . The apparatus of claim 1 , wherein the second portion of the source identifier is indicative of the message type, and wherein the first portion of the source identifier is not indicative of the message type.
11 . The apparatus of claim 1 , wherein at least one of the first portion of the source identifier or the second portion of the source identifier indicates a broadcast remote identifier.
12 . The apparatus of claim 1 , wherein the control information includes a signaling bit that indicates whether the source identifier included in the control information is indicative of the message type.
13 . The apparatus of claim 1 , wherein the control information is indicative of the message type through the source identifier which is provided to an aerial device by a network.
14 . The apparatus of claim 1 , wherein the control information is indicative of the message type through a logical channel identifier.
15 . The apparatus of claim 1 , wherein the plurality of aerial vehicle broadcast message types includes an aerial vehicle-to-aerial vehicle communications type or an aerial vehicle-to-terrestrial communications type.
16 . The apparatus of claim 15 , wherein the aerial vehicle-to-aerial vehicle communications type is associated with one or more types of a detect and avoid message and the aerial vehicle-to-terrestrial communications type is associated with a broadcast remote identifier message.
17 . An apparatus for wireless communication at a receiving device, comprising:
one or more processors;
one or more memories coupled with the one or more processors; and
instructions stored in the one or more memories and executable by the one or more processors to cause the apparatus to:
receive control information, from a transmitting device of an aerial vehicle, that indicates a message type of a message, wherein the message type indicated by the control information is one of a plurality of aerial vehicle broadcast message types and the control information is indicative of the message type using a destination identifier, a source identifier, or combination thereof, wherein the source identifier includes a first portion that is in sidelink control information and a second portion that is in a medium access control subheader; and
receive the message in accordance with the indicated message type.
18 . The apparatus of claim 17 , wherein the instructions are further executable by the processor to cause the apparatus to:
determine whether to decode the message based at least in part on the indicated message type and on a receiving device type of the receiving device.
19 . The apparatus of claim 17 , wherein the destination identifier is a common destination identifier that is common regardless of whether the message type is a first type of the plurality of aerial vehicle broadcast message types or a second type of the plurality of aerial vehicle broadcast message types, wherein the control information is indicative of the message type through at least one of a quality-of-service profile associated with the message, a reserved periodicity associated with the message, or a source identifier associated with one of the first type of the plurality of aerial vehicle broadcast message types or the second type of the plurality of aerial vehicle broadcast message types.
20 . The apparatus of claim 17 , wherein the destination identifier is a common destination identifier that is common regardless of whether the message type is a first type of the plurality of aerial vehicle broadcast message types or a second type of the plurality of aerial vehicle broadcast message types, wherein the control information is indicative of the message type through a set of priority bits associated with the message.
21 . The apparatus of claim 17 , wherein the destination identifier is a common destination identifier that is common regardless of whether the message type is a first type of the plurality of aerial vehicle broadcast message types or a second type of the plurality of aerial vehicle broadcast message types, wherein the control information is indicative of the message type through a resource reservation period associated with a periodicity of the message.
22 . The apparatus of claim 17 , wherein the control information is indicative of the message type through one of a first common destination identifier associated with a first type of the plurality of aerial vehicle broadcast message types or a second common destination identifier associated with a second type of the plurality of aerial vehicle broadcast message types, wherein at least one of the first common destination identifier or the second common destination identifier is specific to a geographic region in which an aerial vehicle transmits the control information.
23 . The apparatus of claim 22 , wherein the control information includes a source-layer identifier in addition to one of the first common destination identifier or the second common destination identifier.
24 . The apparatus of claim 17 , wherein the control information is indicative of the message type through one of a first source identifier associated with a first type of the plurality of aerial vehicle broadcast message types or a second source identifier associated with a second type of the plurality of aerial vehicle broadcast message types, wherein at least one of the first source identifier or the second source identifier is specific to a geographic region in which an aerial vehicle transmits the control information.
25 . The apparatus of claim 17 , wherein both the first portion of the source identifier and the second portion of the source identifier are indicative of the message type.
26 . The apparatus of claim 17 , wherein the first portion of the source identifier is indicative of the message type, and wherein the second portion of the source identifier is not indicative of the message type.
27 . A method for wireless communication at a transmitting device of an aerial vehicle, comprising:
transmitting control information that indicates a message type of a message, wherein the message type indicated by the control information is one of a plurality of aerial vehicle broadcast message types and the control information is indicative of the message type using a destination identifier, a source identifier, or combination thereof, wherein the source identifier includes a first portion that is in sidelink control information and a second portion that is in a medium access control subheader; and
transmitting the message in accordance with the indicated message type.
28 . A method for wireless communication at a receiving device, comprising:
receiving control information, from a transmitting device of an aerial vehicle, that indicates a message type of a message, wherein the message type indicated by the control information is one of a plurality of aerial vehicle broadcast message types and the control information is indicative of the message type using a destination identifier, a source identifier, or combination thereof, wherein the source identifier includes a first portion that is in sidelink control information and a second portion that is in a medium access control subheader; and
receiving the message in accordance with the indicated message type.