Method for allocating multimedia broadcast multicast service (MBMS) resources and receiving non MBMS data

• US 8,520,582 B2
• Filed: 06/16/2009
• Issued: 08/27/2013
• Est. Priority Date: 06/23/2008
• Status: Active Grant

• Current Assignee: ZTE Corporation
• Original Assignee: ZTE Corporation
• Inventors: Gou, Wei, Wang, Bin, Zhao, Nan
• Primary Examiner(s): Sheikh, Ayaz
• Assistant Examiner(s): ASEFA, DEBEBE A
• Application Number:
  US13/000,907
• Publication Number:
  US 20110310785A1
• Time in Patent Office: 1,533 Days
• Field of Search: 370254-340
• US Class Current: 370/312
• CPC Class Codes: H04W 72/12 Wireless traffic scheduling
• CPC Class Codes: H04W 72/30 Resource management for broadcast services
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

The present invention discloses a method for allocating MBMS resources and a method for receiving non MBMS data, wherein said method for allocating MBMS resources comprises: way 1: a transmitter using parts on the MBMS resources allocated for the MBMS to send a non MBMS, and informing a receiver of usage state of resources which are used to send the non MBMS in said parts of the MBMS resources through system information; or way 2: a transmitter using parts of the MBMS resources allocated for the MBMS to send a non MBMS only for one or more receivers which are not power limited. The present invention can avoid configuring the MBMS for the over allocation MBMS subframes using complex scheduling algorithms, and implements the flexible allocation of the MBMS subframes.

Claims

1. A method for allocating multimedia broadcast multicast service (MBMS) resources, comprising:

way 1;

a transmitter using parts of the MBMS resources allocated for the MBMS to send a non MBMS, and informing a receive of usage state of resources used to send the non MBMS in said parts of the MBMS resources through system information;

or

way 2;

a transmitter using parts of the MBMS resources allocated for the MBMS to send a non MBMS only for one or more relay stations;

wherein, said MBMS resources, in MBMS single frequency network (MBSFN) subframes allocated from a carrier in which the MBMS and the non MBMS are time division multiplexed, are composed by orthogonally frequency division multiplexed (OFDM) symbols except for OFDM symbols occupied by physical downlink control channel (PDCCH); and

said parts of the MBMS resources are in parts of the MBSFN subframes which are allocated for the MBMS but are not used for transmitting the MBMS.

2. The method as claimed in claim 1, wherein in said way 1, said transmitter detects the usage state of resources for sending the non MBMS in current scheduling period, and if a utilization ratio of the resources for sending the non MBMS is larger than a pre-set threshold, then the transmitter schedules said parts of the MBMS resources to send the non MBMS, otherwise the transmitter does not schedules said parts of the MBMS resources.

3. The method as claimed in claim 2, wherein when said transmitter schedules said parts of the MBMS resources to send the non MBMS, control information in all the MBMS resources carries identification information of all the receivers;

if said transmitter schedules MBMS required resources to send the MBMS, the transmitter does not schedules said parts of the MBMS resources, and control information in said parts of the MBMS resources carries identification information of corresponding receivers.

4. The method as claimed in claim 1, wherein in said way 1, said transmitter informs the receiver whether said parts of the MBMS resources are used by adding one bit identification in the system information.

5. The method as claimed in claim 1, wherein in said way 2, said transmitter receives terminal type registration information including a power limitation state of the receiver sent by said receiver during accessing, and chooses corresponding receivers to use the parts of the MBMS resources allocated for the MBMS to send the non MBMS according to the terminal type register information.

6. The method as claimed in claim 5, wherein in said way 2, when said transmitter uses parts of the MBMS resources allocated for the MBMS to send the non MBMS, control information in said parts of the MBMS resources only carries identification information of one or more relay stations.

7. The method as claimed in claim 1, wherein said system information is signaling used to informing the receivers by the transmitter, and said system information is system message, control signaling or dedicated signaling.

8. The method as claimed in claim 1, wherein in said transmitter using parts of the MBMS resources which are allocated for the MBMS to send a non MBMS, said parts of the MBMS resources are all the MBMS resources or zero.

9. The method as claimed in claim 1, wherein said parts of the MBMS resources includes idle MBMS resources which is not used to send the MBMS after said transmitter scheduling the MBMS, and idle MBMS resources of over allocation when said transmitter allocates the MBMS.

10. A method for receiving non multimedia broadcast multicast service (MBMS) data on MBMS resources, comprising:

a receiver which has a non MBMS determining whether a transmitter uses parts of the MBMS resources to send non MBMS data according to received system information, if yes, then said receiver monitoring the MBMS resources which sends the non MBMS, and receiving non MBMS data from corresponding MBMS resources;

wherein, said MBMS resources, in MBMS single frequency network (MBSFN) subframes allocated from a carrier in which the MBMS and the non MBMS are time division multiplexed, are composed by orthogonally frequency division multiplexed (OFDM) symbols except for OFDM symbols occupied by physical downlink control channel (PDCCH); and

said parts of the MBMS resources are in parts of the MBSFN subframes which are allocated for the MBMS but are not used for transmitting the MBMS.

11. The method as claimed in claim 10, wherein according to bit identification in said system information, said receivers determines whether the transmitter uses parts of the MBMS resources.

12. The method as claimed in claim 10, wherein if said receiver determines that said transmitter does not uses said parts of the MBMS resources, then said receiver does not monitor the MBMS resources.

13. The method as claimed in claim 10, wherein when said receiver receives non MBMS data from corresponding MBMS resources, firstly analyzes control information including the identification information of receivers, a modulation mode and data length in corresponding MBMS resources, if analyzing successfully, then receives non MBMS data according to analyzed parameters;

or refuses receiving data in said corresponding MBMS resources.

14. A method for receiving non multimedia broadcast multicast service (MBMS) data on MBMS resources, comprising:

one or more relay stations monitoring control information in the MBMS resources, and receiving non MBMS data from corresponding MBMS resources;

wherein, said MBMS resources, in MBMS single frequency network (MBSFN) subframes allocated from a carrier in which the MBMS and the non MBMS are time division multiplexed, are composed by orthogonally frequency division multiplexed (OFDM) symbols except for OFDM symbols occupied by physical downlink control channel (PDCCH); and

said parts of the MBMS resources are in parts of the MBSFN subframes which are allocated for the MBMS but are not used for transmitting the MBMS.

15. The method as claimed in claim 14, wherein when receiving non MBMS data from corresponding MBMS resources, said receiver firstly analyzes control information including the identification information of receivers, a modulation mode and data length in corresponding MBMS resources, if analyzing successfully, then said receiver receives non MBMS data according to analyzed parameters;

or refuses receiving data in said corresponding MBMS resources.