Method and apparatus of transmitting rlc status report in next generation mobile communication system

Patent metadata

Field	Value
Publication number	US-2018317114-A1
Application number	US-201815963820-A
Country	US
Kind code	A1
Filing date	Apr 26, 2018
Priority date	Apr 26, 2017
Publication date	Nov 1, 2018
Grant date	—

Abstract

The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services.

First claim

What is claimed is:

1 . A method of transmitting a radio link control (RLC) status report by a terminal in a wireless communication system, the method comprising:
receiving, from a base station, at least one RLC protocol data unit (PDU); identifying a missed RLC service data unit (SDU) based on a sequence number of the at least one RLC PDU; and transmitting, to the base station, the RLC status report for reporting the missed RLC SDU, wherein the RLC status report includes a first field for indicating whether the RLC SDU is missed.

2 . The method of claim 1 , wherein the RLC status report includes a second field to indicate the sequence number of the missed RLC SDU.

3 . The method of claim 1 , wherein:
the RLC SDU includes a plurality of segments, and the RLC status report includes a fifth field to configure a third field and fourth field which are used to indicate a missed segments.

4 . The method of claim 3 , wherein the third field indicates a start position of the missed segments, and the fourth field indicates an end position of the missed segments.

5 . The method of claim 3 , wherein the third field is configured to 0 when a start position of the missed segments is equal to a start position of the missed RLC SDU including the missed segments.

6 . The method of claim 3 , wherein the fourth field is configured to 0 or 1 when an end position of the missed segments is equal to an end position of the missed RLC SDU including the missed segments.

7 . The method of claim 4 , wherein the third field is configured to 0 when the start position of the missed segments is equal to a start position of the missed RLC SDU including the missed segments.

8 . The method of claim 4 , wherein the fourth field is configured to 0 or 1 when the end position of the missed segments is equal to an end position of the missed RLC SDU including the missed segments.

9 . The method of claim 4 , wherein the RLC status report includes a seventh field to configure a sixth field indicating a range of a consecutively missed RLC SDU.

10 . The method of claim 9 , wherein information indicated by the fourth field is varied corresponding to a value of the seventh field.

11 . A terminal in a wireless communication system, the terminal comprising:
a transceiver; and a controller coupled with the transceiver and configured to:
control the transceiver to receive, from a base station, at least one RLC protocol data unit (PDU),
identify a missed RLC service data unit (SDU) based on a sequence number of the at least one RLC PDU, and
control the transceiver to transmit, to the base station, a RLC status report for reporting the missed RLC SDU,
wherein the RLC status report includes a first field for indicating whether the RLC SDU is missed.

12 . The terminal of claim 11 , wherein the RLC status report includes a second field to indicate the sequence number of the missed RLC SDU.

13 . The terminal of claim 11 , wherein:
the RLC SDU includes a plurality of segments, and the RLC status report includes a fifth field to configure a third field and fourth field which are used to indicate a missed segments.

14 . The terminal of claim 13 , wherein the third field indicates a start position of the missed segments, and the fourth field indicates an end position of the missed segments.

15 . The terminal of claim 13 , wherein the third field is configured to 0 when a start position of the missed segments is equal to a start position of the missed RLC SDU including the missed segments.

16 . The terminal of claim 13 , wherein the fourth field is configured to 0 or 1 when an end position of the missed segments is equal to an end position of the missed RLC SDU including the missed segments.

17 . The terminal of claim 13 , wherein the RLC status report includes a seventh field to configure a sixth field indicating a range of a consecutively missed RLC SDU.

18 . The terminal of claim 14 , wherein the third field is configured to 0 when the start position of the missed segments is equal to a start position of the missed RLC SDU including the missed segments.

19 . The terminal of claim 14 , wherein the fourth field is configured to 0 or 1 when the end position of the missed segments is equal to an end position of the missed RLC SDU including the missed segments.

20 . The terminal of claim 14 , wherein the RLC status report includes a seventh field to configure a sixth field indicating a range of a consecutively missed RLC SDU.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Kim Donggun
• Kim Sangbum
• Kim Soenghun
• Jin Seungri
• Jang Jaehyuk

Classifications

• H04L1/1642

  Formats specially adapted for sequence numbers · CPC title

• H04L1/1628

  List acknowledgements, i.e. the acknowledgement message consisting of a list of identifiers, e.g. of sequence numbers (H04L1/1614 takes precedence) · CPC title

• H04W24/10 Primary

  Scheduling measurement reports {; Arrangements for measurement reports} · CPC title

• H04L1/1685

  the supervisory signal being transmitted in response to a specific request, e.g. to a polling signal · CPC title

• H04L1/1635

  Cumulative acknowledgement, i.e. the acknowledgement message applying to all previous messages · CPC title