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

• US 8,767,606 B2
• Filed: 08/08/2008
• Issued: 07/01/2014
• 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): Hamza, Faruk
• Assistant Examiner(s): LO, DIANE LEE
• Application Number:
  US12/672,835
• Publication Number:
  US 20110211516A1
• Time in Patent Office: 2,153 Days
• Field of Search: None
• US Class Current: 370/312
• 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 receiving control information associated with an MBMS (Multimedia Broadcast Multicast Service) at a user equipment (UE) in a wireless communication system, the method comprising:

receiving, by the UE, a notification message including a M-RNTI (MBMS Radio Network Temporary Identifier) through a physical downlink control channel from a network,

wherein radio resources are defined as a plurality of OFDM (Orthogonal Frequency Division Multiplexing) symbols in a time domain and a plurality of subcarriers in a frequency domain,

wherein a part including a first symbol of the continuous OFDM symbols in one subframe is used for transmission of the physical control channel and a remaining part of the continuous OFDM symbols is used for transmission of a physical data channel,

wherein the network comprises a plurality of MBSFN (MBMS Single Frequency Network) areas,

wherein each of the plurality of MBSFN areas comprises a plurality of cells for performing synchronous transmission to the user equipment for the MBMS,

wherein the notification message indicates which of a plurality of MCCHs (Multicast Control Channels) related to the MBMS is to be changed,

wherein each of the plurality of MCCHs corresponds to one of the plurality of MBSFN areas indicated by the M-RNTI,

wherein the plurality of MCCHs are mapped on a MCH (Multicast Channel), and

wherein the user equipment is configured to support combining of MBMS transmission from the plurality of cells; and

receiving changed control information of at least one MCCH of the plurality of MCCHs indicated by the notification message.

2. The method of claim 1, wherein the notification message further includes a channel identifier identifying the at least one MCCH, and allocation information of a downlink radio resource through which the at least one MCCH is transmitted.

3. The method of claim 1, wherein the user equipment receives the control channel periodically.

4. The method of claim 1, wherein the at least one MCCH includes at least one primary MCCH (P-MCCH) and at least one secondary MCCH (S-MCCH).

5. The method of claim 4, wherein the notification message indicates a specific P-MCCH.

6. The method of claim 4, wherein the notification message indicates a specific S-MCCH.

7. The method of claim 1, wherein an allocation of radio resources used in the plurality of MBSFN areas for the MBMS is performed by MCE (Multi-Cell/Multicast Coordination Entity).

8. A method of transmitting control information associated with an MBMS (Multimedia Broadcast Multicast Service) at a network of a wireless communication system, the method comprising:

transmitting, by the network, a notification message including a M-RNTI (MBMS Radio Network Temporary Identifier) to at least one user equipment through a physical downlink control channel,

wherein radio resources are defined as a plurality of OFDM (Orthogonal Frequency Division Multiplexing) symbols in a time domain and a plurality of subcarriers in a frequency domain,

wherein a part including a first symbol of the continuous OFDM symbols in one subframe is used for transmission of the physical control channel and a remaining part of the continuous OFDM symbols is used for transmission of a physical data channel,

wherein the network comprises a plurality of MBSFN (MBMS Single Frequency Network) areas,

wherein each of the plurality of MBSFN areas comprises a plurality of cells for performing synchronous transmission to the at least one user equipment for the MBMS,

wherein the notification message indicates which of a plurality of MCCHs (Multicast Control Channels) related to the MBMS is to be changed,

wherein each of the plurality of MCCHs corresponds to one of the plurality of MBSFN areas indicated by the M-RNTI,

wherein the plurality of MCCHs are mapped on a MCH (Multicast Channel), and

wherein the synchronous transmission supports combining of MBMS transmission from the plurality of cells at the at least one user equipment; and

transmitting changed control information of at least one MCCH of the plurality of MCCHs indicated by the notification message.

9. The method of claim 8, wherein the notification message further includes a channel identifier identifying the at least one MCCH, and allocation information of a downlink radio resource through which the at least one MCCH is transmitted.

10. The method of claim 8, wherein the network transmits the control channel periodically.

11. The method of claim 8, wherein the at least one MCCH includes at least one primary MCCH (P-MCCH) and at least one secondary MCCH (S-MCCH).

12. The method of claim 11, wherein the notification message indicates a specific P-MCCH.

13. The method of claim 11, wherein the notification message indicates a specific S-MCCH.

14. The method of claim 8, wherein an allocation of radio resources used in the plurality of MBSFN areas for the MBMS is performed by MCE (Multi-Cell/Multicast Coordination Entity).