Method and apparatus for predicting traffic and transmitting a buffer prediction status report
An operation method of a terminal in a communication system may comprise: predicting traffic using a traffic prediction function configured according to traffic prediction configuration information; transmitting a buffer prediction status report including a traffic prediction result to a base station; receiving a first physical uplink shared channel (PUSCH) resource allocation information generated based on the buffer prediction status report; and transmitting data to the base station using first resources allocated by the first PUSCH resource allocation information.
1 . An operation method of a terminal in a communication system, the method comprising:
predicting traffic using a traffic prediction function configured according to traffic prediction configuration information;
determining whether a traffic prediction result satisfies a reporting condition;
transmitting, in response to the traffic prediction result satisfying the reporting condition, a scheduling request to a base station;
receiving a first physical uplink shared channel (PUSCH) resource allocation information generated based on the scheduling request from the base station;
transmitting a buffer prediction status report including the traffic prediction result to the base station using first resources allocated by the first PUSCH resource allocation information;
receiving a seconds PUSCH resource allocation information generated based on the buffer prediction status report; and
transmitting data to the base station using second resources allocated by the second PUSCH resource allocation information.
2 . The method of claim 1 , wherein the traffic prediction result comprises at least one of amount of uplink traffic, predicted generation time of uplink traffic, or prediction accuracy of uplink traffic.
3 . The method of claim 1 , wherein the reporting condition is at least one of a condition in which amount of uplink traffic is equal to or greater than a predetermined size, a condition in which predicted generation time of uplink traffic is within a predetermined period of time, or a condition in which prediction accuracy of uplink traffic is equal to or greater than a predetermined percentage.
4 . The method of claim 1 , further comprising:
receiving traffic prediction model information for each traffic prediction model identified by a traffic prediction model identifier from the base station;
receiving traffic prediction configurating information including the traffic prediction model identifier from the base station; and
configuring the traffic prediction function with a traffic prediction model identified by the traffic prediction model identifier.
5 . The method of claim 1 , further comprising:
receiving, from the base station, model feedback configuration information requesting transmission of a model feedback signal when a different between a measurement result and a prediction result at a predetermined time is equal to or greater than a threshold value;
obtaining the measurement result by measuring traffic at the predetermined time;
obtaining the prediction result by predicting a traffic at the predetermined time; and
transmitting the model feedback signal to the base station in response to the measurement result and the prediction result being equal to or greater than the threshold value.
6 . The method of claim 5 , wherein transmitting the model feedback signal to the base station in response to the measurement result and the prediction result being equal to or greater than the threshold value comprises:
transmitting, in response to the measurement result and the prediction result being equal to or greater than the threshold value, an information availability indicator indicating the presence of a model feedback report to the base station;
receiving a model feedback report request from the base station; and
transmitting the model feedback signal including information on the measurement result and information on the prediction result to the base station.
7 . The method of claim 1 , further comprising:
receiving a traffic prediction activation command from the base station; and
activating the traffic prediction function according to the traffic prediction activation command.
8 . The method of claim 1 , further comprising:
checking a state of the terminal upon prediction of generation of traffic according to the traffic prediction result;
establishing, in response to the state being an idle state, a radio resource control (RRC) connection with the base station through an RRC connection establishment procedure; and
resuming, in response to the state being inactive state, an RRC connection with the base station through an RRC connection resume procedure with the base station.
9 . An operation method of a base station in a communication system, the method comprising:
transmitting traffic prediction model information for each traffic prediction model identified by a traffic prediction model identifier to a terminal;
generating traffic prediction configuration information including the traffic prediction model identifier;
transmitting the traffic prediction configuration information to the terminal;
receiving from the terminal a scheduling request generated based on a traffic prediction result predicted according to the traffic prediction configuration information;
allocating first physical uplink shared channel (PUSCH) resources based on the scheduling request;
transmitting allocation information on the first PUSCH resources to the terminal; and
receiving a buffer prediction status report through the first PUSCH resources.
10 . The method of claim 9 , further comprising:
receiving a buffer prediction status report including a traffic prediction result from the terminal;
allocating second PUSCH resources based on the buffer prediction status report;
transmitting allocation information on the PUSCH resources to the terminal; and
receiving data through the second PUSCH resources from the terminal.
11 . The method of claim 9 , further comprising:
predicting downlink traffic using a traffic prediction model;
checking a state of the terminal upon prediction of generation of the downlink traffic;
transmitting a paging message to the terminal when the state is an idle state or an inactive state; and
initiating a radio resource control (RRC) connection establishment or RRC resume procedure with the terminal.
12 . A terminal comprising:
a processor configured to control the terminal to;
predict traffic using a traffic prediction function configured according to traffic prediction configuration information;
determine whether a traffic prediction result satisfies a reporting condition;
transmit, in response to the traffic prediction result satisfying the reporting condition, a scheduling request to a base station;
receive a first physical uplink shared channel (PUSCH) resource allocation information generated based on the scheduling request from the base station;
transmit a buffer prediction status report including the traffic prediction result to the base station using first resources allocated by the first PUSCH resource allocation information;
receive a second PUSCH resource allocation information generated based on the buffer prediction status report; and
transmit data to the base station using second resources allocated by the second PUSCH resource allocation information.
13 . The terminal of claim 12 , wherein the traffic prediction result comprises at least one of amount of uplink traffic, predicted generation time of uplink traffic, or prediction accuracy of uplink traffic.
14 . The terminal of claim 12 , wherein the reporting condition is at least one of a condition in which amount of uplink traffic is equal to or greater than a predetermined size, a condition in which predicted generation time of uplink traffic is within a predetermined period of time, or a condition in which prediction accuracy of uplink traffic is equal to or greater than a predetermined percentage.
15 . The terminal of claim 12 , wherein the processor is further configured to control the terminal to receive, from the base station, model feedback configuration information requesting transmission of a model feedback signal when a different between a measurement result and a prediction result at a predetermined time is equal to or greater than a threshold value, obtain the measurement result by measuring traffic at the predetermined time, obtain the prediction result by predicting a traffic at the predetermined time, and transmit the model feedback signal to the base station in response to the measurement result and the prediction result being equal to or greater than the threshold value.
16 . The method of claim 12 , wherein the processor is further configured to control the terminal to check a state of the terminal upon prediction of generation of traffic according to the traffic prediction result, establish, in response to the state being an idle state, a radio resource control (RRC) connection with the base station through an RRC connection establishment procedure, and resuming, in response to the state being inactive state, an RRC connection with the base station through an RRC connection resume procedure with the base station.