Method and apparatus for receiving data in user equipment of supporting multimedia broadcast multicast service

• US 9,420,433 B2
• Filed: 04/10/2012
• Issued: 08/16/2016
• Est. Priority Date: 04/11/2011
• Status: Expired

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Kim, Sangbum, Kim, Soenghun, Van Lieshout, Gert-Jan
• Primary Examiner(s): Duong, Frank
• Application Number:
  US13/443,174
• Publication Number:
  US 20120257562A1
• Time in Patent Office: 1,589 Days
• Field of Search: 370/312, 370/432
• US Class Current: 1/1
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• 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 52/0216 using a pre-established activity schedule, e.g. traffic indication frame
• CPC Class Codes: H04W 52/0219 where the power saving management affects multiple terminals
• 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
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A method and an apparatus for receiving data in a User Equipment (UE) supporting a Multimedia Broadcast Multicast Service (MBMS) are provided. A method of receiving data by a UE which supports an MBMS includes obtaining first indication information indicating a Multicast/Broadcast over a Single Frequency Network (MBSFN) subframe reserved for an MBSFN, obtaining second indication information indicating a subframe in the MBSFN subframe, the subframe decoding a Physical Multicast CHannel (PMCH), and when although a first subframe is indicated as the MBSFN subframe, the first subframe is not indicated to decode a PMCH and is not of a subframe for a Positioning Reference Signal (PRS), receiving a Physical Downlink Control CHannel (PDCCH) of the first subframe and decoding a corresponding Physical Downlink Shared CHannel (PDSCH).

Claims

1. A method of receiving data by a User Equipment (UE) which supports a Multimedia Broadcast Multicast Service (MBMS), the method comprising:

detecting, if the UE is in transmission mode 9, a Physical Downlink Control Channel (PDCCH) in a subframe indicated by a higher layer parameter mbsfn-SubframeConfigList; and

decoding a Physical Downlink Shared CHannel (PDSCH) corresponding to the PDCCH in the subframe,

wherein the subframe is not indicated by higher layers to decode Physical Multicast CHannel (PMCH), and

wherein the subframe is not configured by higher layers to be part of a Positioning Reference Signal (PRS) occasion.

2. The method of claim 1, wherein the PRS occasion is only configured within MBSFN subframes.

3. The method of claim 1, wherein cyclic prefix length used in subframe #0 is normal cyclic prefix.

4. The method of claim 1, further comprising:

obtaining Multicast CHannel (MCH) scheduling information; and

if the subframe is indicated to interrupt transmission of Multicast Traffic CHannel (MTCH) by the MCH scheduling information, detecting the PDCCH in the subframe and decoding the PDSCH corresponding to the PDCCH in the subframe.

5. The method of claim 1, further comprising:

when the subframe is indicated to decode the PMCH, receiving and decoding the PMCH of the subframe.

6. The method of claim 5, wherein when the subframe is indicated to decode the PMCH, the PDCCH of the subframe is not received.

7. The method of claim 5, wherein when the subframe is indicated to decode the PMCH, the subframe is decoded by applying an extended cyclic prefix.

8. The method of claim 7, wherein when the subframe is not indicated to decode the PMCH, the subframe is decoded by applying all of the extended cyclic prefix and a general cyclic prefix.

9. The method of claim 1, wherein Cyclic Redundancy Check (CRC) is attached to the PDCCH and the CRC is scrambled by the Cell Radio Network Temporary ID (C-RNTI) with DCI format 1A or 2C intended for the UE.

10. A User Equipment (UE) for supporting a Multimedia Broadcast Multicast Service (MBMS), the UE comprising:

a transceiver configured to transmit and receive a signal;

a controller configured to detect a Physical Downlink Control Channel (PDCCH) in a subframe indicated by a higher layer parameter mbsfn-SubframeConfigList if the UE is in transmission mode 9, and to decode a Physical Downlink Shared CHannel (PDSCH) corresponding to the PDCCH in the subframe,

wherein the subframe is not indicated by higher layers to decode Physical Multicast CHannel (PMCH), and

wherein the subframe is not configured by higher layers to be part of a Positioning Reference Signal (PRS) occasion.

11. The UE of claim 10, wherein the PRS occasion is only configured within MBSFN subframes.

12. The UE of claim 10, wherein cyclic prefix length used in subframe #0 is normal cyclic prefix.

13. The UE of claim 10, wherein the transceiver obtains Multicast CHannel (MCH) scheduling information, and

if the subframe is indicated to interrupt transmission of Multicast Traffic CHannel (MTCH) by the MCH scheduling information, the controller detects the PDCCH in the subframe and decodes the PDSCH corresponding to the PDCCH in the subframe.

14. The UE of claim 10, wherein when the subframe is indicated to decode the PMCH, the controller receives and decodes the PMCH of the subframe.

15. The UE of claim 14, wherein when the subframe is indicated to decode the PMCH, the controller does not receive the PDCCH of the subframe.

16. The UE of claim 14, wherein when the subframe is indicated to decode the PMCH, the controller decodes the subframe by applying an extended cyclic prefix.

17. The UE of claim 16, wherein when the subframe is not indicated to decode the PMCH, the controller decodes the subframe by applying all of the extended cyclic prefix and a general cyclic prefix.

18. The UE of claim 10, wherein Cyclic Redundancy Check (CRC) is attached to the PDCCH and the CRC is scrambled by the Cell Radio Network Temporary ID (C-RNTI) with DCI format 1A or 2C intended for the UE.