Method for operating user equipment in wireless communication system, and device therefor

• US 10,433,318 B2
• Filed: 01/12/2016
• Issued: 10/01/2019
• Est. Priority Date: 01/12/2015
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Lee, Seungmin, Yang, Suckchel, Ahn, Joonkui, Kim, Seonwook
• Primary Examiner(s): Ho, Chuong T
• Application Number:
  US15/543,176
• Publication Number:
  US 20180027574A1
• Time in Patent Office: 1,358 Days
• Field of Search: 370329, 370330
• CPC Class Codes: H04J 11/0073 Acquisition of primary synchronisation channel, e.g. detection of cell-ID within cell-ID group
• CPC Class Codes: H04L 1/00 Arrangements for detecting or preventing errors in the information received correcting synchronisation H04L7/00
• CPC Class Codes: H04L 1/0038 Blind format detection for detection of modulation format H04L27/0012
• CPC Class Codes: H04L 1/0045 Arrangements at the receiver end
• CPC Class Codes: H04L 1/0046 Code rate detection or code type detection H04L1/0038 takes precedence; detection of the data rate H04L25/0262; for packet format H04L1/0091
• CPC Class Codes: H04L 1/0072 Error control for data other than payload data, e.g. control data
• CPC Class Codes: H04L 1/1671 the supervisory signal being transmitted together with control information
• CPC Class Codes: H04L 5/00 Arrangements affording multiple use of the transmission path
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• CPC Class Codes: H04L 5/001 the frequencies being arranged in component carriers
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0091 Signaling for the administration of the divided path
• CPC Class Codes: H04L 5/0094 Indication of how sub-channels of the path are allocated
• CPC Class Codes: H04W 24/08 Testing, supervising or monitoring using real traffic
• CPC Class Codes: H04W 24/10 Scheduling measurement reports ; Arrangements for measurement reports
• CPC Class Codes: H04W 28/06 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 Class Codes: H04W 36/0079 in case of hand-off failure or rejection
• CPC Class Codes: H04W 36/0088 Scheduling hand-off measurements
• CPC Class Codes: H04W 36/305 Handover due to radio link failure control signalling for hand-off failure H04W36/0079
• CPC Class Codes: H04W 48/10 using broadcasted information
• CPC Class Codes: H04W 48/12 : using downlink control channel
• CPC Class Codes: H04W 48/16 : Discovering, processing access restriction or access information
• CPC Class Codes: H04W 72/21 : in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: H04W 72/23 : in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 72/542 : using measured or perceived quality
• CPC Class Codes: H04W 76/27 : Transitions between radio resource control [RRC] states

Abstract

Provided are a method for operating user equipment (UE) having multiple serving cells set therefor in a wireless communication system and UE using the method. The method comprises: receiving a higher-level signal indicating a mapping between the values of the serving cell index (ServingCellID) of a serving cell and a carrier index field (CIF); and identifying the serving cell on the basis of the higher-level signal.

Claims

1. A method for operating a user equipment (UE) supporting a carrier aggregation of a plurality of serving cells in a wireless communication system, the method comprising:

receiving a higher layer signal informing a carrier index field (CIF) value among a plurality of CIF values, wherein the CIF value is used in a scheduling cell, among the plurality of serving cells, to indicate a scheduled cell, among the plurality of serving cells, having a serving cell index among a plurality of serving cell indexes;

receiving, through the scheduling cell, scheduling information which has a carrier index field; and

receiving, through the scheduled cell, data scheduled by the scheduling information, when a value of the carrier index field of the scheduling information is the CIF value,

wherein a number of the plurality of CIF values is smaller than a number of the plurality of serving cell indexes,

wherein the higher layer signal further comprises;

serving cell identification information indicating a first scheduling cell and a second scheduling cell, each of the first scheduling cell and the second scheduling cell configured to schedule a respective first set of one or more scheduled cells and second set of one or more scheduled cells;

a first carrier index field (CIF) value used by the first scheduling cell to indicate the first set of one or more scheduled cells; and

a second CIF value used by the second scheduling cell to indicate the second set of one or more scheduled cells, and

wherein the first and second sets of one or more scheduled cells contain no common cell.

2. The method of claim 1, wherein the CIF consists of 3 bits.

3. The method of claim 1, wherein the higher layer signal is a radio resource control (RRC) message.

4. A user equipment (UE) supporting a carrier aggregation of a plurality of serving cells in a wireless communication system, the UE comprising:

a transceiver; and

a processor operatively connected to the transceiver and configured to;

receive a higher layer signal informing a carrier index field (CIF) value among a plurality of CIF values, wherein the CIF value is used in a scheduling cell, among the plurality of serving cells, to indicate a scheduled cell, among the plurality of serving cells, having a serving cell index among a plurality of serving cell indexes;

receive, through the scheduling cell, scheduling information which has a carrier index field; and

receive, through the scheduled cell, data scheduled by the scheduling information, when a value of the carrier index field of the scheduling information is the CIF value,

wherein a number of the plurality of CIF values is smaller than a number of the plurality of serving cell indexes,

wherein the higher layer signal further comprises;

serving cell identification information indicating a first scheduling cell and a second scheduling cell, each of the first scheduling cell and the second scheduling cell configured to schedule a respective first set of one or more scheduled cells and second set of one or more scheduled cell;

a first carrier index field (CIF) value used by the first scheduling cell to indicate the first set of one or more scheduled cells; and

a second CIF value used by the second scheduling cell to indicate the second set of one or more scheduled cells, and

wherein the first and second sets of one or more scheduled cells contain no common cell.

5. The UE of claim 4, wherein the CIF consists of 3 bits.

6. The UE of claim 4, wherein the higher layer signal is a radio resource control (RRC) message.