Method and device for controlling transmission or reception of data in wireless communication system

1 . An operating method of a transmission user equipment (UE) in a wireless communication system, the operating method comprising:

obtaining a point cloud corresponding to an object;

transmitting, to a reception UE, a message comprising a parameter for transmission and reception of the point cloud, wherein the parameter for transmission and reception of the point cloud comprises a parameter associated with a direction of the object, a space parameter associated with the object, a first indicator indicating whether to use the parameter associated with the direction of the object, and a second indicator indicating whether to use the space parameter associated with the object;

receiving, from the reception UE, a response message comprising an application parameter of the reception UE, wherein the application parameter of the reception UE indicates a parameter that is applicable to the reception UE based on a channel state of the reception UE and the parameter for transmission and reception of the point cloud;

compressing the point cloud, based on the application parameter of the reception UE; and

transmitting, to the reception UE, the compressed point cloud.

2 . The operating method of claim 1 ,

wherein the parameter associated with the direction of the object indicates a display direction of the object on an image when the object is displayed on the image by the reception UE.

3 . The operating method of claim 1 ,

wherein the space parameter associated with the object comprises at least one of information indicating a scheme of segmenting the object into one or more regions or information indicating the one or more regions.

4 . The operating method of claim 1 , wherein the parameter for transmission and reception of the point cloud comprises at least one of resolution information of an image buffer associated with the compressing of the point cloud, type information of the image buffer, count information of the point cloud, transfer rate information of the point cloud, patch size information of the point cloud, information indicating a priority between the count information of the point cloud and the patch size information of the point cloud.

5 . An operating method of a reception user equipment (UE) in a wireless communication system, the operating method comprising:

receiving, from a transmission UE, a message comprising a parameter for transmission and reception of a point cloud corresponding to an object, wherein the parameter for transmission and reception of the point cloud comprises a parameter associated with a direction of the object, a space parameter associated with the object, a first indicator indicating whether to use the parameter associated with the direction of the object, and a second indicator indicating whether to use the space parameter associated with the object;

determining an application parameter of the reception UE, based on a channel state of the reception UE and the parameter for transmission and reception of the point cloud;

transmitting, to the transmission UE, a response message comprising the determined application parameter of the reception UE;

receiving, from the transmission UE, the point cloud, wherein the point cloud is compressed based on the application parameter of the reception UE;

displaying an image associated with the object, based on the compressed point cloud; and

in case of deterioration of the channel state transmitting to the transmission UE, a temporary maximum media bit-rate request (TMMBR) message requesting to decrease bitrate.

6 . The operating method of claim 5 ,

wherein the parameter associated with the direction of the object indicates a display direction of the object on an image when the object is displayed on the image by the reception UE.

7 . The operating method of claim 6 , wherein the determining of the application parameter of the reception UE comprises:

identifying, from the parameter for transmission and reception of the point cloud, the indicator indicating whether to use the parameter associated with the direction of the object; and

determining at least one among display directions of the object, based on the channel state of the reception UE or a predetermined reference.

8 . The operating method of claim 5 ,

wherein the space parameter associated with the object comprises at least one of information indicating a scheme of segmenting the object into one or more regions or information indicating the one or more regions associated with the object.

9 . The operating method of claim 8 , wherein the determining of the application parameter of the reception UE comprises:

identifying, from the parameter for transmission and reception of the point cloud, the indicator indicating whether to use the space parameter associated with the object; and

determining at least one among a plurality of pieces of information indicating the one or more regions associated with the object, based on the channel state of the reception UE or a predetermined reference.

10 . The operating method of claim 5 , wherein the parameter for transmission and reception of the point cloud comprises at least one of resolution information of an image buffer associated with the compressing of the point cloud, type information of the image buffer, count information of the point cloud, transfer rate information of the point cloud, patch size information of the point cloud, information indicating a priority between the count information of the point cloud and the patch size information of the point cloud.

11 . A transmission user equipment (UE) in a wireless communication system, the transmission UE comprising:

a transceiver; and

at least one processor configured to:

obtain a point cloud corresponding to an object,

transmit, to a reception UE via the transceiver, a message comprising a parameter for transmission and reception of the point cloud, wherein the parameter for transmission and reception of the point cloud comprises a parameter associated with a direction of the object, a space parameter associated with the object, a first indicator indicating whether to use the parameter associated with the direction of the object and a second indicator indicating whether to use the space parameter associated with the object,

receive, from the reception UE via the transceiver, a response message comprising an application parameter of the reception UE, wherein the application parameter of the reception UE indicates a parameter that is applicable to the reception UE based on a channel state of the reception UE and the parameter for transmission and reception of the point cloud,

compress the point cloud, based on the application parameter of the reception UE, and

transmit, to the reception UE via the transceiver, the compressed point cloud.

12 . The transmission UE of claim 11 ,

wherein the parameter associated with the direction of the object indicates a display direction of the object on an image when the object is displayed on the image by the reception UE.

13 . The transmission UE of claim 11 ,

wherein the space parameter associated with the object comprises at least one of information indicating a scheme of segmenting the object into one or more regions or information indicating the one or more regions.

14 . The transmission UE of claim 11 , wherein the parameter for transmission and reception of the point cloud comprises at least one of resolution information of an image buffer associated with the compressing of the point cloud, type information of the image buffer, count information of the point cloud, transfer rate information of the point cloud, patch size information of the point cloud, information indicating a priority between the count information of the point cloud and the patch size information of the point cloud.

15 . A reception user equipment (UE) in a wireless communication system, the reception UE comprising:

a transceiver; and

at least one processor configured to:

receive, from a transmission UE, a message comprising a parameter for transmission and reception of a point cloud corresponding to an object, wherein the parameter for transmission and reception of the point cloud comprises a parameter associated with a direction of the object, a space parameter associated with the object, a first indicator indicating whether to use the parameter associated with the direction of the object, and a second indicator indicating whether to use the space parameter associated with the object,

determine an application parameter of the reception UE, based on a channel state of the reception UE and the parameter for transmission and reception of the point cloud,

transmit, to the transmission UE, a response message comprising the determined application parameter of the reception UE,

receive, from the transmission UE, the point cloud, wherein the point cloud is compressed based on the application parameter of the reception UE,

display an image associated with the object, based on the compressed point cloud, and

in case of deterioration of the channel state transmit, to the transmission UE, a temporary maximum media bit-rate request (TMMBR) message requesting to decrease bitrate.

16 . The reception UE of claim 15 ,

wherein the parameter associated with the direction of the object indicates a display direction of the object on an image when the object is displayed on the image by the reception UE.

17 . The reception UE of claim 16 , wherein the at least one processor is further configured to:

identify, from the parameter for transmission and reception of the point cloud, the indicator indicating whether to use the parameter associated with the direction of the object, and

determine at least one among display directions of the object, based on the channel state of the reception UE or a predetermined reference.

18 . The reception UE of claim 15 ,

wherein the space parameter associated with the object comprises at least one of information indicating a scheme of segmenting the object into one or more regions or information indicating the one or more regions associated with the object.

19 . The reception UE of claim 18 , wherein the at least one processor is further configured to:

identify, from the parameter for transmission and reception of the point cloud, the indicator indicating whether to use the space parameter associated with the object, and

determine at least one among a plurality of pieces of information indicating the one or more regions associated with the object, based on the channel state of the reception UE or a predetermined reference.

20 . The reception UE of claim 15 , wherein the parameter for transmission and reception of the point cloud comprises at least one of resolution information of an image buffer associated with the compressing of the point cloud, type information of the image buffer, count information of the point cloud, transfer rate information of the point cloud, patch size information of the point cloud, information indicating a priority between the count information of the point cloud and the patch size information of the point cloud.