Method and apparatus for transmitting a MAC control message in wireless access system

• US 9,319,231 B2
• Filed: 07/13/2012
• Issued: 04/19/2016
• Est. Priority Date: 12/08/2011
• Status: Expired due to Fees

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Kim, Jeongki, Park, Giwon, Yuk, Youngsoo
• Primary Examiner(s): Kamara, Mohamed
• Application Number:
  US14/363,757
• Publication Number:
  US 20140314043A1
• Time in Patent Office: 1,376 Days
• Field of Search: 370229-231, 370/236, 370/252, 370/270, 370277-278, 370/282, 370/310.2, 370/312, 370328-330, 370/338, 370/341, 370/390, 370431-432, 455/420, 455/423.2, 455/434, 455436-439, 455/444, 455450-451, 455/452.1, 455/464
• US Class Current: 1/1
• CPC Class Codes: H04B 7/2612 Arrangements for wireless medium access control, e.g. by allocating physical layer transmission capacity H04B7/2615 - H04B7/2643 take precedence; provision for broadband connection H04Q11/0478
• CPC Class Codes: H04L 12/189 in combination with wireless systems selective distribution or broadcast in wireless communication networks H04W4/06
• 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 4/70 Services for machine-to-machine communication [M2M] or machine type communication [MTC]
• CPC Class Codes: H04W 72/20 Control channels or signalling for resource management
• CPC Class Codes: H04W 72/30 Resource management for broadcast services

Abstract

A method for transmitting a Medium Access Control (MAC) control message for an M2M device and an apparatus for supporting the same are disclosed herein. According to an exemplary embodiment, a method for transmitting a MAC control message includes the steps of receiving a broadcast assignment map information element (BA A-MAP IE) including a function index field and broadcast assignment information for the M2M device, and wherein the broadcast assignment information indicates a resource region to which the MAC control message is being transmitted, and, when a cyclic redundancy check (CRC) bit masked to the BA A-MAP IE indicates that the BA A-MAP IE is for a M2M broadcast assignment, receiving the MAC control message through the resource region, which is indicated by the broadcast assignment information.

Claims

1. A method for receiving a Medium Access Control (MAC) control message for an M2M device in a wireless access system, the method comprising:

receiving, by the M2M device, a broadcast assignment map information element (BA A-MAP IE) including a function index field and broadcast assignment information, wherein the function index field indicates that the BA A-MPA IE carries the broadcast assignment information for the M2M device and the broadcast assignment information indicates a resource region to which the MAC control message is being transmitted; and

receiving, by the M2M device, the MAC control message through the resource region which is indicated by the broadcast assignment information, when a cyclic redundancy check (CRC) bit masked to the BA A-MAP IE indicates that the BA A-MAP IE is for a M2M broadcast assignment,

wherein the CRC bit being masked to the BA A-MAP IE is configured to a 1-bit masking prefix, a 3-bit type indicator, and a 12-bit masking code, and

wherein the masking code is used to mask the BA A-MAP IE for the M2M broadcast assignment.

2. The method of claim 1, wherein the BA A-MAP IE further comprises a subfunction index indicating whether the BA A-MAP IE includes ranging channel assignment information for the M2M device or broadcast assignment information for the M2M device.

3. The method of claim 1, wherein the broadcast assignment information includes at least one of a burst size field indicating a size of the MAC control message, a resource index field indicating an allocation location and an allocation size of the resource region, a long TTI indicator field indicating a number of subframes spanned by the resource region, and a transmission format field indicating whether a time domain is being repeated.

4. The method of claim 1,

wherein the masking prefix is set to 0b0, and

wherein the type indicator is set to 0b010 and the masking code corresponds to a decimal value of 4094, or

wherein the type indicator is set to 0b001 and the masking code corresponds to a decimal value of 4095.

5. The method of claim 1, wherein the MAC control message is an AAI-MTE-IND message or an AAI-MGMC message.

6. A method for transmitting a Medium Access Control (MAC) control message for an M2M device in a wireless access system, the method comprising:

broadcasting, by a base station, a broadcast assignment map information element (BA A-MAP IE) including a function index field and broadcast assignment information, wherein the function index field indicates that the BA A-MAP IE carries the broadcast assignment information for the M2M device and the broadcast assignment information indicates a resource region to which the MAC control message is being transmitted; and

transmitting, by the base station, the MAC control message through the resource region which is indicated by the broadcast assignment information,

wherein a cyclic redundancy check (CRC) bit masked to the BA A-MAP IE indicates that the BA A-MAP IE is for a M2M broadcast assignment,

wherein the CRC bit being masked to the BA A-MAP IE is configured to a 1-bit masking prefix, a 3-bit type indicator, and a 12-bit masking code, and

wherein the masking code is used to mask the BA A-MAP IE for the M2M broadcast assignment.

7. The method of claim 6, wherein the BA A-MAP IE further comprises a subfunction index indicating whether the BA A-MAP IE includes ranging channel assignment information for the M2M device or broadcast assignment information for the M2M device.

8. The method of claim 6, wherein the broadcast assignment information includes at least one of a burst size field indicating a size of the MAC control message, a resource index field indicating an allocation location and an allocation size of the resource region, a long TTI indicator field indicating a number of subframes spanned by the resource region, and a transmission format field indicating whether a time domain is being repeated.

9. The method of claim 6, wherein the masking prefix is set to 0b0, and

wherein the type indicator is set to 0b010 and the masking code corresponds to a decimal value of 4094, or

wherein the type indicator is set to 0b001 and the masking code corresponds to a decimal value of 4095.

10. The method of claim 6, wherein the MAC control message is an AAI-MTE-IND message or an AAI-MGMC message.

11. A M2M device for receiving a Medium Access Control (MAC) control message in a wireless access system, the M2M device comprising:

a transmitter;

a receiver; and

a processor supporting a reception of the MAC control message,

wherein the M2M device is configured to;

receive a broadcast assignment map information element (BA A-MAP IE) including a function index field and broadcast assignment information by using the receiver, wherein the function index field indicates that the BA A-MAP IE carries the broadcast assignment information for the M2M device and the broadcast assignment information indicates a resource region to which the MAC control message is being transmitted; and

receive the MAC control message through the resource region which is indicated by the broadcast assignment information by using the receiver, when a cyclic redundancy check (CRC) bit masked to the BA A-MAP IE indicates that the BA A-MAP IE is for a M2M broadcast assignment,

wherein the CRC bit being masked to the BA A-MAP IE is configured to a 1-bit masking prefix, a 3-bit type indicator, and a 12-bit masking code, and

wherein the masking code is used to mask the BA A-MAP IE for the M2M broadcast assignment.

12. The M2M device of claim 11, wherein the BA A-MAP IE further comprises a subfunction index indicating whether the BA A-MAP IE includes ranging channel assignment information for the M2M device or broadcast assignment information for the M2M device.

13. The M2M device of claim 11, wherein the broadcast assignment information includes at least one of a burst size field indicating a size of the MAC control message, a resource index field indicating an allocation location and an allocation size of the resource region, a long TTI indicator field indicating a number of subframes spanned by the resource region, and a transmission format field indicating whether a time domain is being repeated.

14. The M2M device of claim 11, wherein

the masking prefix is set to 0b0, and

wherein the type indicator is set to 0b010 and the masking code corresponds to a decimal value of 4094, or

wherein the type indicator is set to 0b001 and the masking code corresponds to a decimal value of 4095.

15. The M2M device of claim 11, wherein the MAC control is an AAI-MTE-IND message or an AAI-MGMC message.

16. A base station for transmitting a Medium Access Control (MAC) control message in a wireless access system, the base station comprising:

a transmitter;

a receiver; and

a processor for supporting a transmission of the MAC control message,

wherein the base station is configured to;

transmit a broadcast assignment map information element (BA A-MAP IE) including a function index field and broadcast assignment information by using the transmitter, wherein the function index field indicates that the BA A-MAP IE carries the broadcast assignment information for the M2M device and the broadcast assignment information indicates a resource region to which the MAC control message is being transmitted; and

transmit the MAC control message through the resource region which is indicated by the broadcast assignment information,

wherein a cyclic redundancy check (CRC) bit masked to the BA A-MAP IE indicates that the BA A-MAP IE is for a M2M broadcast assignment,

wherein the CRC bit being masked to the BA A-MAP IE is configured to a 1-bit masking prefix, a 3-bit type indicator, and a 12-bit masking code, and

wherein the masking code is used to mask the BA A-MAP IE for the M2M broadcast assignment.

17. The base station of claim 16, wherein the BA A-MAP IE further comprises a subfunction index indicating whether the BA A-MAP IE includes ranging channel assignment information for the M2M device or broadcast assignment information for the M2M device.

18. The base station of claim 16, wherein the broadcast assignment information includes at least one of a burst size field indicating a size of the MAC control message, a resource index field indicating an allocation location and an allocation size of the resource region, a long TTI indicator field indicating a number of subframes spanned by the resource region, and a transmission format field indicating whether a time domain is being repeated.

19. The base station of claim 16, wherein

the masking prefix is set to 0b0, and

wherein the type indicator is set to 0b010 and the masking code corresponds to a decimal value of 4094, or

wherein the type indicator is set to 0b001 and the masking code corresponds to a decimal value of 4095.

20. The base station of claim 16, wherein the MAC control message is an AAI-MTE-IND message or an AAI-MGMC message.