Electronic device which receives data by using split bearer and operation method of electronic device

Patent metadata

Field	Value
Publication number	US-11277874-B2
Application number	US-202016985617-A
Country	US
Kind code	B2
Filing date	Aug 5, 2020
Priority date	Oct 8, 2019
Publication date	Mar 15, 2022
Grant date	Mar 15, 2022

Abstract

An electronic device and a method thereof are provided. The electronic device includes at least one communication processor which receives data via a first cellular communication or a second cellular communication, and an application processor, wherein the at least one communication processor is configured to receive, from a master node corresponding to the first cellular communication, first partitioned data among partitioned data produced by partitioning the data, and receive second partitioned data from a secondary node corresponding to the second cellular communication, identify a first sequence number of the first partitioned data and a second sequence number of the second partitioned data, and induce a decrease in or a stop of transmission of pieces of partitioned data to the electronic device via a node which transmits partitioned data corresponding to a small sequence number.

First claim

What is claimed is:

1. An electronic device comprising:
at least one communication processor which receives data via a first cellular communication or a second cellular communication; and
an application processor,
wherein the at least one communication processor is configured to:
receive, from a master node corresponding to the first cellular communication, first partitioned data among partitioned data produced by partitioning the data, and receive second partitioned data from a secondary node corresponding to the second cellular communication;
identify a first sequence number of the first partitioned data and a second sequence number of the second partitioned data; and
based on comparison of a preconfigured value with a difference value between the first sequence number and the second sequence number, induce a decrease in or a stop of transmission of pieces of partitioned data to the electronic device via a node which transmits partitioned data corresponding to a small sequence number among the first sequence number and the second sequence number.

2. The electronic device of claim 1 , wherein the at least one communication processor is further configured to, in response to a case of identifying that the difference value between the first sequence number and the second sequence number is equal to or greater than the preconfigured value, transmit, to a node corresponding to at least one cellular communication among the first cellular communication or the second cellular communication, a channel quality indicator (CQI) indicating that the quality of a channel is low.

3. The electronic device of claim 1 , wherein the at least one communication processor is further configured to, in response to a case of identifying that the difference value between the first sequence number and the second sequence number is equal to or greater than the preconfigured value, transmit, to a node corresponding to at least one cellular communication among the first cellular communication or the second cellular communication, a channel quality indicator (CQI) indicating that data reception is impossible.

4. The electronic device of claim 1 , wherein the at least one communication processor is further configured to transmit, to the master node, a PDCP state report indicating whether or not the difference value between the first sequence number and the second sequence number is equal to or greater than the preconfigured value.

5. The electronic device of claim 1 , wherein the at least one communication processor is further configured to:
in response to a case of identifying that a preconfigured time expires, identify whether or not the difference value between the first sequence number and the second sequence number is equal to or greater than the preconfigured value; and
based on a result of the identification, determine whether or not to maintain performing an operation of inducing a decrease in or a stop of transmission of pieces of partitioned data to the electronic device via a node corresponding to one cellular communication among the first cellular communication or the second cellular communication.

6. The electronic device of claim 5 , wherein the preconfigured time is configured to increase according to the number of times in which whether or not the difference value between the first sequence number and the second sequence number is equal to or greater than the preconfigured value.

7. The electronic device of claim 1 , wherein the at least one communication processor is further configured to:
in response to a case of identifying that the first sequence number and the second sequence number are not consecutive, activate a timer which identifies whether or not a preconfigured time expires;
temporarily store the first partitioned data and the second partitioned data in a queue;
in response to a case of identifying that the preconfigured time expires, identify a capacity storable in the queue; and
based on a result of identifying the capacity storable in the queue, adjust the preconfigured time.

8. The electronic device of claim 7 , wherein the at least one communication processor is further configured to decrease the preconfigured time in response to a case of identifying that the capacity storable in the queue is equal to or less than a preconfigured value.

9. The electronic device of claim 8 , wherein the at least one communication processor is further configured to, based on the capacity storable in the queue, determine a decreased value of the preconfigured time.

10. An electronic device comprising:
at least one communication processor which receives data via a first cellular communication or a second cellular communication; and
an application processor,
wherein the at least one communication processor is configured to:
receive, from a master node corresponding to the first cellular communication, first partitioned data among partitioned data produced by partitioning the data, and receive second partitioned data from a secondary node corresponding to the second cellular communication,
identify a first sequence number of the first partitioned data and a second sequence number of the second partitioned data,
in response to a case of identifying that the first sequence number and the second sequence number are not consecutive, activate a timer which identifies whether or not a preconfigured time elapses,
temporarily store the first partitioned data and the second partitioned data in a queue,
in response to a case of identifying that the preconfigured time expires, identify a capacity storable in the queue, and
based on a result of identifying the capacity storable in the queue, adjust the preconfigured time.

11. The electronic device of claim 10 , wherein the at least one communication processor is further configured to decrease the preconfigured time in response to a case of identifying that the capacity storable in the queue is equal to or greater than a preconfigured value.

12. The electronic device of claim 10 , wherein the at least one communication processor is further configured to increase the preconfigured time in response to a case of identifying that the capacity storable in the queue is equal to or less than a preconfigured value.

13. The electronic device of claim 10 , wherein the at least one communication processor is further configured to identify the capacity storable in the queue in response to a case of identifying that half the preconfigured time elapses after the timer is activated.

14. The electronic device of claim 10 , wherein the at least one communication processor is further configured to adjust a maximum capacity of the queue, based on a data processing speed.

15. A method of an electronic device, the method comprising:
receiving, by a communication processor, from a master node which performs first cellular communication with the electronic device, first partitioned data among partitioned data produced by partitioning data, and receiving second partitioned data from a secondary node which performs second cellular communication with the electronic device;
identifying, by a packet data convergence protocol (PDCP) implemented on the communication processor, a first sequence number of the first partitioned data and a second sequence number of the second partitioned data; and
based on comparison of a preconfigured value with a difference value between the first sequence number and the second sequence number, inducing, by the PDCP, a decrease in or a stop of transmission of pieces of partitioned data to the electronic device via a node which transmits partitioned data corresponding to a rapid

Assignees

• Samsung Electronics Co Ltd

Inventors

• Kim Hyeonsoo
• Kang Daejun
• Kim Yushin
• Lee Keonyoung
• Jung Yongjae

Classifications

• H04L47/34

  ensuring sequence integrity, e.g. using sequence numbers · CPC title

• H04L1/0002

  by adapting the transmission rate · CPC title

• H04L1/0027

  Scheduling of signalling, e.g. occurrence thereof · CPC title

• H04W28/06 Primary

  Optimizing {the usage of the radio link}, e.g. header compression, information sizing {, discarding information (system modifying transmission characteristic according to link quality by modifying frame length H04L1/0007; dynamic adaptation of the packet size for flow control or congestion control H04L47/365)} · CPC title

• H04W76/14 Primary

  Direct-mode setup · CPC title