Method of transmitting and receiving control information in a wireless communication system

• US 9,699,778 B2
• Filed: 09/23/2016
• Issued: 07/04/2017
• Est. Priority Date: 08/10/2007
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Yi, Seung June, Lee, Young Dae, Chun, Sung Duck, Park, Sung Jun
• Primary Examiner(s): LO, DIANE LEE
• Application Number:
  US15/274,895
• Publication Number:
  US 20170013601A1
• Time in Patent Office: 284 Days
• Field of Search: None
• CPC Class Codes: H04J 1/14 Arrangements providing for calling or supervisory signals
• CPC Class Codes: H04L 12/189 in combination with wireless systems selective distribution or broadcast in wireless communication networks H04W4/06
• CPC Class Codes: H04L 27/2601 Multicarrier modulation systems
• CPC Class Codes: H04L 5/001 the frequencies being arranged in component carriers
• CPC Class Codes: H04L 5/0092 Indication of how the channel is divided
• CPC Class Codes: H04W 4/06 Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
• CPC Class Codes: H04W 48/12 using downlink control channel
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 72/30 Resource management for broadcast services

Abstract

A method of transmitting and receiving control information in a wireless communication system is disclosed. The method of receiving control information related to a specific point-to-multipoint service in a user equipment of a wireless communication system comprises receiving a notification message including indication information and an identifier identifying the point-to-multipoint service from a network, the indication information indicating at least one downlink channel related to the specific point-to-multipoint service among a plurality of downlink channels established for transmission of control information for at least one or more point-to-multipoint service, and receiving at least one downlink channel indicated by the indication information.

Claims

1. A method of transmitting a signal associated with a broadcast service, the method comprising:

modulating the signal by an OFDM (Orthogonal Frequency Division Multiplexing) scheme, the signal carrying a frame that has a plurality of OFDM symbols in a time domain and a plurality of subcarriers in a frequency domain; and

transmitting the modulated signal through a physical channel,

wherein the frame is composed of an information region and a data region,

wherein a part of continuous OFDM symbols in the frame is mapped to the information region for transmission of Layer 1 (L1) information and a remaining part of continuous OFDM symbols in the frame is mapped to the data region for transmission of data for the broadcast service,

wherein the information region is located before the data region in the frame,

wherein the L1 information includes first information, wherein the first information indicates a change of second information related to the broadcast service, and

wherein the L1 information further includes identification information for uniquely identifying a data channel for carrying the broadcast service and allocation information on position of the broadcast service in the frame.

2. The method of claim 1, wherein the frame further includes Layer 2 (L2) information and wherein the L1 information and the L2 information are periodically transmitted.

3. The method of claim 1, wherein the data for the broadcast service is included in IP (Internet Protocol) packets on which header compressed is performed.