IP Library Granted Patent US 9,265,030
Granted Patent B2
US 9,265,030 · App. 14/501,142 · Granted Feb 16, 2016

Method and device for controlling MBMS receiving in a wireless communication system

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Quick Facts
Patent No.
US 9,265,030
App. No.
14/501,142
Granted
Feb 16, 2016
Kind
B2
Abstract

The present invention provides a method of receiving a multimedia broadcast/multicast service in a user equipment of a wireless communication system based on MBSFN transmission and a method of assisting the user equipment to receive the service in the corresponding base station; wherein the user equipment receives a transport block from the base station in a predefined period; and then judges whether a notification indicator in the transport block is activated, if so, then judges whether a service identification of a multimedia broadcast/multicast service subscribed to by the user equipment is included in a transport block including a control signaling in the transport block, if so, then receives the multimedia broadcast/multicast service. By implementing the present invention, a user terminal in IDLE mode only needs a predefined period such as a DRX period to wake up to receive the notification indicator to judge whether a new service will start without waking up at extra time.

Claims (47)

1. A method of receiving a service in a user equipment of a wireless communication system based on Multicast Broadcast Single Frequency Network (MBSFN) transmission, the method comprising:

receiving a plurality of transport blocks from a base station in a predefined period; and

receiving a multimedia broadcast/multicast service, when a service identification of a multimedia broadcast/multicast service subscribed to by the user equipment is included in a second transport block of the plurality of transport blocks that includes a control signaling, and when a notification indicator in a first transport block of the plurality of transport blocks is activated, wherein the first and second transport blocks are different.

2. The method according to claim 1 , comprising determining whether the service identification of the multimedia broadcast/multicast service subscribed to by the user equipment is included in the second transport block by:

decoding and demodulating the second transport block according to obtained modulation and coding information;

obtaining modified services information from the decoded and demodulated second transport block; and

determining whether the service identification of the multimedia broadcast/multicast service subscribed to by the user equipment is included in the modified services information.

3. The method according to claim 1 , comprising receiving the multimedia broadcast/multicast service on a determined time-frequency resource.

4. The method according to claim 1 , wherein the first transport block comprises downlink control information, and the downlink control information comprises:

position information of the second transport block,

modulation and coding information of the second transport block, and

the notification indicator.

5. The method according claim 4 , comprising determining whether the notification indicator in the first transport block of the plurality of transport blocks is activated by:

obtaining the downlink control information from the first transport block;

determining whether the notification indicator in the downlink control information is activated.

6. The method according to claim 4 , wherein the second transport block includes service data.

7. The method according to claim 1 , wherein the first transport block is transmitted in a MBSFN sub-frame, and the control signaling is a Multicast Control Channel (MCCH) signaling.

8. The method according to claim 1 , wherein the predefined period is a Discontinuous Reception (DRX) period.

9. A method of receiving a service in a user equipment of a wireless communication system based on Multicast Broadcast Single Frequency Network (MBSFN) transmission, the method comprising:

receiving a plurality of transport blocks from a base station in a predefined period; and

receiving the multimedia broadcast/multicast service, when service identification of a multimedia broadcast/multicast service subscribed to by the user equipment is included in a second transport block of the plurality of transport blocks that includes a control signaling, and when a notification indicator in a first transport block of the plurality of transport blocks is activated, wherein the first and second transport blocks are different;

wherein the first transport block comprises downlink control information, and the downlink control information comprises:

position information of the second transport block,

modulation and coding information of the second transport block, and

the notification indicator;

the method further comprising determining whether the service identification of the multimedia broadcast/multicast service subscribed to by the user equipment is included in the second transport block by:

obtaining the position information and the modulation and coding information of the second transport block from the downlink control information;

searching the second transport block according to the position information;

decoding and demodulating the searched second transport block according to the modulation and coding information;

obtaining modified services information from the decoded and demodulated second transport block; and

determining whether the service identification of the multimedia broadcast/multicast service subscribed to by the user equipment is included in the modified services information.

10. A method performed by a base station of a wireless communication system based on Multicast Broadcast Single Frequency Network (MBSFN) transmission, the method comprising:

in the base station, activating a notification indicator in a first transport block that is sent at a starting time of a predefined period, before starting to transmit a new multimedia broadcast/multicast service, and updating a second transport block that includes a control signaling, according to the new multimedia broadcast/multicast service, wherein the first and second transport blocks are different; and

sending the first transport block.

11. The method according to claim 10 , wherein the first transport block is transmitted in a MBSFN sub-frame, and the control signaling is a Multicast Control Channel (MCCH) signaling.

12. The method according to claim 10 , wherein the predefined period is a Discontinuous Reception (DRX) period.

13. A user equipment for use in a communication system supporting Multicast Broadcast Single Frequency Network (MBSFN) transmission, comprising:

a receiver configured to receive a plurality of transport blocks from a base station in a predefined period;

at least one processor configured to determine whether a notification indicator in a first transport block of the plurality of transport blocks is activated; and

the at least one processor configured to determine whether a service identification of a multimedia broadcast/multicast service subscribed to by the user equipment is included in a second transport block of the plurality of transport blocks including a control signaling, when the notification indicator is activated, wherein the first and second transport blocks are different;

wherein the receiver is configured to receive the multimedia broadcast/multicast service, when the service identification of the multimedia broadcast/multicast service subscribed to by the user equipment is included in the second transport block.

14. A base station for use in a communication system based on Multicast Broadcast Single Frequency Network (MBSFN) transmission, comprising:

a transmitter configured to activate a notification indicator in a first transport block that is sent at a starting time of a predefined period, and to update a second transport block including a control signal, according to a new multimedia broadcast/multicast service, wherein the first and second transport blocks are different, before starting to transmit the new multimedia broadcast/multicast service; and

the transmitter being configured to transmit the second transport block.

15. A method of receiving a service in a user equipment of a wireless communication system based on Multicast Broadcast Single Frequency Network (MBSFN) transmission, the method comprising:

receiving a plurality of transport blocks from a base station in a predefined period; and

receiving a multimedia broadcast/multicast service, when a service identification of a multimedia broadcast/multicast service subscribed to by the user equipment is included in a given transport block of the plurality of transport blocks that includes a control signaling, and when a notification indicator in the given transport block of the plurality of transport blocks is activated.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 19, 2018
From: ALCATEL LUCENT
To: NOKIA TECHNOLOGIES OY
Reel/Frame 047271/0246 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 30, 2014
From: WANG, HE; CHEN, YU
To: ALCATEL LUCENT
Reel/Frame 033846/0925 →