Broadcast and system information for machine type communication

• US 9,432,797 B2
• Filed: 01/08/2014
• Issued: 08/30/2016
• Est. Priority Date: 01/14/2013
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Xu, Hao, Chen, Wanshi, Gaal, Peter, Ji, Tingfang, Griot, Miguel
• Primary Examiner(s): Ho, Duc C
• Application Number:
  US14/150,248
• Publication Number:
  US 20140198726A1
• Time in Patent Office: 965 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: H04L 41/0866 Checking the configuration
• CPC Class Codes: H04W 24/02 Arrangements for optimising operational condition
• CPC Class Codes: H04W 28/06 Optimizing the usage of the radio link, e.g. header compression, information sizing , discarding information system modifying transmission characteristic according to link quality by modifying frame length H04L1/0007; dynamic adaptation of the packet size for flow control or congestion control H04L47/365
• CPC Class Codes: H04W 28/18 Negotiating wireless communication parameters
• CPC Class Codes: H04W 4/70 Services for machine-to-machine communication [M2M] or machine type communication [MTC]
• CPC Class Codes: H04W 48/10 using broadcasted information
• CPC Class Codes: H04W 48/16 Discovering, processing access restriction or access information
• CPC Class Codes: H04W 72/30 Resource management for broadcast services
• CPC Class Codes: H04W 72/51 based on terminal or device properties
• CPC Class Codes: H04W 92/18 between terminal devices

Abstract

Methods, systems, and devices are described for facilitating Machine Type Communication in a wireless communications system. Link budget-limited MTC devices, may be supported. An MTC physical broadcast channel may be utilized for the Machine Type Communication. The MTC physical broadcast channel may be transmitted over one or more subframes different from a regular physical broadcast channel. The payload for the MTC physical broadcast channel may be reduced. The MTC physical broadcast channel may also be utilized to indicate the presence of paging and/or to indicate a change in system information. Some embodiments utilize one or more MTC-specific system information blocks. The MTC-specific system information blocks may combine and/or simplify multiple system information blocks. The location of the MTC system information blocks may be predetermined or information about their location may be transmitted over the MTC physical broadcast channel. An enhanced paging channel may be used to indicate system information updates.

Claims

1. A method for facilitating Machine Type Communication (MTC) in a wireless communications system, the method comprising:

receiving an MTC-specific system information block at an MTC device, wherein the MTC-specific system information block comprises first system information included in a first system information block and second system information included in a second system information block; and

processing the MTC-specific system information block at the MTC device.

2. The method of claim 1, wherein the first system information block and the second system information block are each selected from a group that consists of:

system information block 1 (SIB1), system information block 2 (SIB2), and system information block 12 (SIB12).

3. The method of claim 1, wherein the MTC-specific system information block consists of:

a subset of system information included in the first system information block or the second system information block.

4. The method of claim 3, wherein the subset of system information included in the first system information block or the second system information block comprises:

system information block 1 (SIB1), system information block 2 (SIB2), or system information block 12 (SIB12).

5. The method of claim 1, wherein the MTC-specific system information block comprises fields for:

cell access information, scheduling information for other system information blocks, and radio resource configuration information.

6. The method of claim 1, wherein the MTC-specific system information block comprises:

fields for cell access information and cell selection information;

or

fields for scheduling information for other system information blocks.

7. The method of claim 1, wherein the MTC-specific system information block comprises fields for:

MTC random access channel (RACH) configuration information or MTC paging channel configuration information.

8. The method of claim 1, wherein the MTC-specific system information block consists of fields for:

physical uplink shared channel (PUSCH) configuration information, power control, and a timer.

9. The method of claim 1, wherein the MTC-specific system information block comprises:

fields for radio resource configuration information other than physical uplink control channel (PUSCH) configuration information and sounding reference signal (SRS) configuration information.

10. The method of claim 1, wherein the MTC-specific system information block is located at one or more predetermined locations.

11. The method of claim 10, wherein the one or more predetermined locations are a function of a cell ID, a cyclic prefix length, and a division duplex configuration.

12. The method of claim 1, further comprising:

receiving information regarding one or more locations of the MTC-specific system information block over an MTC physical broadcast channel.

13. The method of claim 1, further comprising:

determining a sleep time of the MTC device exceeds a time duration; and

reading the MTC-specific system information block when the determined sleep time exceeds the time duration.

14. An apparatus for facilitating Machine Type Communication (MTC) in a wireless communications system, the apparatus comprising:

means for receiving an MTC-specific system information block at the apparatus, wherein the MTC-specific system information block comprises first system information included in a first system information block and second system information included in a second system information block; and

means for processing the MTC-specific system information block at the apparatus.

15. The apparatus of claim 14, wherein the MTC-specific system information block consists of:

a subset of system information included in the first system information block or the second system information block.

16. The apparatus of claim 14, further comprising:

means for receiving information regarding one or more locations of the MTC-specific system information block over an MTC physical broadcast channel.

17. The apparatus of claim 14, further comprising:

means for determining a sleep time of the apparatus exceeds a time duration; and

means for reading the MTC-specific system information block when the determined sleep time exceeds the time duration.

18. An apparatus for facilitating Machine Type Communication (MTC) in a wireless communications system, the apparatus comprising:

a processor;

memory in electronic communication with the processor; and

instructions stored in the memory, the instructions being executable by the processor to cause the apparatus to;

receive an MTC-specific system information block at the apparatus, wherein the MTC-specific system information block comprises first system information included in a first system information block and second system information included in a second system information block; and

process the MTC-specific system information block.

19. The apparatus of claim 18, wherein the MTC-specific system information block consists of:

a subset of system information included in the first system information block or the second system information block.

20. The apparatus of claim 18, wherein the MTC-specific system information block is located at one or more predetermined locations.

21. The apparatus of claim 18, wherein the instructions are executable by the processor to cause the apparatus to:

receive information regarding one or more locations of the MTC-specific system information block over an MTC physical broadcast channel.

22. The apparatus of claim 18, wherein the instructions are executable by the processor to cause the apparatus to:

determine a sleep time of the apparatus exceeds a time duration; and

read the MTC-specific system information block when the determined sleep time exceeds the time duration.

23. A non-transitory computer-readable medium store code for Machine Type Communication (MTC) in a wireless communications system, the comprising instructions executable to:

receive an MTC-specific system information block at an MTC device, wherein the MTC-specific system information block comprises first system information included in a first system information block and second system information included in a second system information block; and

process the MTC-specific system information block at the MTC device.

24. The non-transitory computer-readable medium of claim 23, wherein the MTC-specific system information block consists of:

a subset of system information included in the first system information block or the second system information block.

25. The non-transitory computer-readable medium of claim 23, wherein the instructions are executable to:

receive information regarding one or more locations of the MTC-specific system information block over an MTC physical broadcast channel.

26. The non-transitory computer-readable medium of claim 23, wherein the instructions are executable to:

determine a sleep time of the MTC device exceeds a time duration; and

read the MTC-specific system information block when the determined sleep time exceeds the time duration.