DATA TRANSMISSION METHOD THROUGH POINT TO MULTI-POINT TRANSMISSION SERVICE

• US 20140198707A1
• Filed: 01/16/2014
• Published: 07/17/2014
• Est. Priority Date: 01/17/2013
• Status: Active Grant

• Current Assignee: Industrial Technology Research Institute
• Original Assignee: Industrial Technology Research Institute
• Inventors: Lin, Tzu-Ming, Chiu, Chun-Yuan, Wang, Yi-Lin
• Granted Patent: US 9,326,270 B2
• Time in Patent Office: Days
• US Class Current: 370/312
• CPC Class Codes: H04W 4/70 Services for machine-to-machine communication [M2M] or machine type communication [MTC]
• 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

The present disclosure proposes a data transmission method through multimedia broadcast multicast services (MBMS). Specifically, the present disclosure proposes using a cell broadcast service to perform data transmission, and the proposed functions would include receiving an information of a service data, allocating a data channel resource based on the information of the service data to generate an allocation information for the data channel, allocating a control channel resource based on the information of the service data to generate an allocation information for the control channel, and transmitting the allocation information for the control channel to a target device.

Claims

1. A data transmission method using a point to multi-point transmission service through a multicast channel which comprises a data channel and a control channel, configured for a network control node, and the method comprises:

receiving an information of a service data;

allocating a data channel resource based on the information of the service data to generate an allocation information for the data channel;

allocating a control channel resource based on the information of the service data to generate an allocation information for the control channel; and

transmitting the allocation information for the control channel to a target device.

2. The method of claim 1, wherein when the network control node is a Broadcast Multicast Service Center (BM-SC), claim 1 further comprises:

receiving the service data;

allocating from the service data a first service data which is to be placed in the data channel according to the allocation information for the data channel; and

allocating from the service data a second service data which is to be placed in the control channel according to the allocation information for the control channel.

3. The method of claim 2 further comprises:

transmitting the first service data indirectly to a base station through a user plane; and

transmitting the second service data indirectly to the base station through a control plane.

4. The method of claim 1, wherein when the network control node is a Multimedia Broadcast/Multicast Services gateway (MBMS-GW), claim 1 further comprises

receiving the service data;

allocating from the service data a first service data to be placed in the data channel according to the allocation information for the data channel; and

allocating from the service data a second service data to be placed in the control channel according to the allocation information for the control channel.

5. The method of claim 4, further comprising:

transmitting the first service data directly to a base station through a user plane; and

transmitting the second service indirectly to the base station through a control plane.

6. The method of claim 1, wherein when the network control node is a Multi-cell/Multicast Coordination Entity (MCE), the step of transmitting the allocation information for the data channel and the allocation information for the control channel to the target device further comprising:

allocating from the service data a first service data which is to be placed in the data channel according to the allocation information for the data channel; and

allocating from the service data a second service data which is to be placed in the control channel according to the allocation information for the control channel.

7. The method of claim 6, further comprising:

transmitting the allocation information of the first service data and the second service data through a control plane to the target device, wherein the target device is a base station.

8. The method of claim 1, wherein the allocation information of the data channel comprises a resource allocation of the service data in a multicast traffic channel (MTCH) and the allocation information of the control channel comprises a resource allocation of the service data in multicast control channel (MCCH).

9. The method of claim 1, wherein when the network control node is a BM-SC, a MBMS-GW, or a MCE, a service identity of the service data is an application identifier, a MBMS session identifier, or a M3 signaling connection identifier respectively.

10. The method of claim 1, wherein the network control node comprises a transmitter and a receiver configured to respectively transmit and receive data and a to processing unit coupled to the transmitter and the receiver and is configured to execute the functions of claim 1.

11. A data transmission method using a point to multi-point transmission service through a multicast channel which comprises a data channel and a control channel, configured for a base station (BS), and the method comprises:

receiving a user plane data and a control plane data comprising a control information;

placing a first data in the data channel according to the control information and placing a second data with the control information in the control channel according to the control information; and

transmitting the first data in the data channel and the second data with the control information in the control channel to a user device.

12. The method of claim 11, wherein when the control plane data contains user data in addition to the control information, the step of placing the first data in the data channel according to the control information and placing the second data with the control information in the control channel according the control information comprising:

placing the user plane data as the first data in the data channel according to the control information and placing the user data from the control plane as the second data along with the control information in the control channel.

13. The method of claim 11, wherein when the control plane data does not contain user data in addition to the control information, the step of placing the first data in the data channel according to the control information and placing the second data with the control information in the control channel according the control information comprising:

dividing the user plane data into the first data and the second data based on the control plane data; and

placing the first data in the data channel and placing the second data with the control information in the control channel.

14. The method of claim 11, wherein when the control plane data does not contain user data in addition to the control information, the step of placing the first data in the data channel according to the control information and placing the second data with the control information in the control channel according the control information comprising:

dividing the user plane data into the first data and the second data based on the control information; and

placing the first data in the data channel and placing the second data with the control information in the control channel.

15. The method of claim 14 further comprising:

coordinating with a second base station to divide another user plane data into a third data and a fourth data through an inter-base station interface; and

the second base station placing the third data into another data channel and placing the fourth data into another control channel.

16. The method of claim 11, wherein the data channel is a multicast traffic channel (MTCH) and the control channel is a multicast control channel (MCCH).

17. The method of claim 11 further comprising transmitting a system information which maps to the control channel containing a group message indicator indicating existence of the second data in the control channel.

18. The method of claim 17, wherein the group message indicator further indicate a length of the second data in the control channel.

19. The method of claim 18, wherein the group message indicator further contains a version number indicating whether the first data and the second data have been updated.

20. The method of claim 11, wherein placing the first data in the data channel according to the control information and placing the second data with the control information in the control channel according to the control information comprising

placing the first data in the data channel according to the control information based on a GPRS Tunnelling Protocol User Tunnel Endpoint Identifier (GTP-U TEID) or an internet protocol (IP) multicast address of a service data from a MBMS GW, and placing the second data with the control information in the control channel based on M2 signaling connection ID from a MCE

21. The method of claim 11, wherein the base station comprises a transmitter and a receiver configured to respectively transmit and receive data and a processing unit coupled to the transmitter and the receiver and is configured to execute the method of claim 11.

22. A data transmission method through a point to multi-point transmission service, configured for a user equipment (UE), and the method comprises:

reading broadcasting information from a broadcast channel;

receiving a control channel from the broadcasting information;

determining a first service data location in the control channel; and

receiving the first service data from the control channel.

23. The method of claim 22, wherein the step of receiving the control channel from the broadcasting information further comprises:

receiving a data channel from the broadcasting information;

determining a second service data location in the data channel; and

receiving the second service data from the data channel.

24. The method of claim 23 further comprising:

receiving the first service data from the control channel when an indicator in the control channel indicates a first value; and

receiving the second service data from the data channel when the indicator in the control channel does not indicate the first value.

25. The method of claim 22, wherein the control channel is multicast control channel (MCCH) and a data channel used to transmit the first service data is multicast traffic channel (MTCH).

26. The method of claim 24, wherein the indicator is a logical channel identifier (LCID), and when LCID indicates the first value, reading the first service data from the control channel.

27. The method of claim 26, wherein when the LCID does not indicate the first value but a second value, claim 26 further comprises:

determining whether the second value is between a specific range; and

reading the second service data from the data channel when the second value falls within the specific range.

28. The method of claim 22, wherein the control channel contains a group message indicator which indicates existence of a second service data in the control channel.

29. The method of claim 28, wherein the group message indicator further indicates a length of the first service data in the control channel.

30. The method of claim 29, wherein the group message indicator further indicates a version number which indicates whether the first service data or the second service data has been updated.

31. The method of claim 22, wherein the UE comprises a transmitter and a receiver configured to respectively transmit and receive data and a processing unit coupled to the transmitter and the receiver and is configured to execute the method of claim 22.