Method and system for allocating media access control layer resources in a wireless communication environment

• US 10,271,310 B2
• Filed: 09/24/2014
• Issued: 04/23/2019
• Est. Priority Date: 05/19/2005
• Status: Active Grant

• Current Assignee: Apple Inc.
• Original Assignee: Apple Inc.
• Inventors: Zhang, Hang, Ma, Jianglei, Jia, Ming, Fong, Mo-Han, Zhu, Peiying, Tong, Wen
• Primary Examiner(s): Qin, Zhiren
• Application Number:
  US14/494,810
• Publication Number:
  US 20150009886A1
• Time in Patent Office: 1,672 Days
• Field of Search: 370312, 370270, 370260, 370338, 370432, 455518, 455519, 455575, 455503
• CPC Class Codes: H04B 7/0413 MIMO systems
• CPC Class Codes: H04L 1/1887 Scheduling and prioritising arrangements
• CPC Class Codes: H04L 12/185 with management of multicast group membership
• CPC Class Codes: H04L 27/2627 Modulators
• CPC Class Codes: H04L 5/023 Multiplexing of multicarrier modulation signals multicarrier modulation H04L27/2601
• CPC Class Codes: H04L 61/5069 for group communication, multicast communication or broadcast communication
• CPC Class Codes: H04W 4/08 User group management
• CPC Class Codes: H04W 48/10 using broadcasted information
• CPC Class Codes: H04W 72/04 Wireless resource allocation
• CPC Class Codes: H04W 72/20 Control channels or signalling for resource management
• CPC Class Codes: H04W 72/30 Resource management for broadcast services
• CPC Class Codes: H04W 74/004 in the uplink, i.e. towards network
• CPC Class Codes: H04W 74/006 in the downlink, i.e. towards the terminal
• CPC Class Codes: Y02D 30/00 Reducing energy consumption in communication networks

Abstract

A method and system for allocating shareable wireless transmission resources. A resource pool is established. The resource pool is divided into a plurality of physical layer allocation units usable for wirelessly transmitting control information and traffic data. The allocation units are assigned at the media access control layer for the wireless transmission of the control information and traffic data. The system and method of the present invention also allows mobile stations to be dynamically grouped into multicast groupings to reduce system overhead resource requirements.

Claims

1. A method for receiving unicast control information that is specific to a mobile station within a multicast group, the method comprising:

at the mobile station;

communicating with a base station using an orthogonal frequency division multiplexing (OFDM) or broadband OFDM based technology, wherein the mobile station is temporarily grouped within a first multicast group of a plurality of multicast groups, wherein the first multicast group is defined by a first multicast group ID of a plurality of multicast group IDs, wherein the membership in the first multicast group is updated by unicast signaling; and

receiving a bitmap in a multicast group message addressed to the first multicast group ID, wherein the multicast group message is received by multiple mobile stations temporarily grouped within the first multicast group, wherein the multicast group message includes unicast control information that is specific to the mobile station and is located at a specific bit position of the bitmap, wherein the bitmap addresses individual users of the first multicast group with respective bit positions of the bitmap known from the unicast signaling update of the first multicast group, and wherein the mobile station disregards bitmaps associated with multicast groups defined by second multicast group IDs other than the first multi cast group ID.

2. The method of claim 1, wherein the first multicast group is further defined by temporarily grouping mobile stations sharing a common parameter that is a layer 1 parameter.

3. The method of claim 1, wherein the first multicast group is further defined by temporarily grouping mobile stations sharing a common parameter that is a layer 2 parameter.

4. The method of claim 1, wherein the first multicast group is further defined by temporarily grouping mobile stations sharing a common parameter, wherein the first multicast group ID is the common parameter.

5. The method of claim 1, wherein the mobile station is grouped within the first multicast group semi-statically.

6. The method of claim 1, wherein the mobile station is further grouped into one or more other multicast groups.

7. The method of claim 1, wherein the first multicast group ID is a medium access control (MAC) ID relating to at least one of MAC and physical layer resources in a wireless communications system.

8. The method of claim 1, wherein the second multicast group IDs prevent the mobile station from decoding multicast group control messages for other mobile stations associated with the second multicast group IDs.

9. The method of claim 1, wherein the unicast control information is a resource allocation.

10. A mobile station configured to receive unicast control information that is specific to the mobile station within a multicast group, the mobile station comprising:

communication circuitry, wherein the communication circuitry is configured to perform wireless communication; and

processing hardware coupled to the communication circuitry, wherein the processing hardware is configured to operate with the communication circuitry to;

communicate with a base station using an orthogonal frequency division multiplexing (OFDM) or broadband OFDM based technology, wherein the mobile station is temporarily grouped within a first multicast group of a plurality of multicast groups, wherein the first multicast group is defined by a first multicast group ID of a plurality of multicast group IDs, wherein the membership in the first multicast group is updated by unicast signaling; and

receive a bitmap in a multicast group message addressed to the first multicast group ID, wherein the multicast group message is received by multiple mobile stations temporarily grouped within the first multicast group, wherein the multicast group message includes unicast control information that is specific to the mobile station and is located at a specific bit position of the bitmap, wherein the bitmap addresses individual users of the first multicast group with respective bit positions of the bitmap known from the unicast signaling update of the first multicast group, and wherein the mobile station disregards bitmaps associated with multicast groups defined by second multicast group IDs other than the first multicast group ID.

11. The mobile station of claim 10, wherein the first multicast group is further defined by temporarily grouping mobile stations sharing a common parameter that is a layer 1 parameter.

12. The mobile station of claim 10, wherein the first multicast group is further defined by temporarily grouping mobile stations sharing a common parameter that is a layer 2 parameter.

13. The mobile station of claim 10, wherein the first multicast group is further defined by temporarily grouping mobile stations sharing a common parameter, wherein the first multicast group ID is the common parameter.

14. The mobile station of claim 10, wherein the mobile station is grouped within the first multicast group semi-statically.

15. The mobile station of claim 10, wherein the mobile station is further grouped into one or more other multicast groups.

16. The mobile station of claim 10, wherein the first multicast group ID is a medium access control (MAC) ID relating to at least one of MAC and physical layer resources in a wireless communications system.

17. A base station configured to transmit unicast control information that is specific to a mobile station within a multicast group, the base station comprising:

communication circuitry, wherein the communication circuitry is configured to perform wireless communication; and

processing hardware coupled to the communication circuitry, wherein the processing hardware is configured to operate with the communication circuitry to;

communicate with a mobile station using an orthogonal frequency division multiplexing (OFDM) or broadband OFDM based technology, wherein the mobile station is temporarily grouped within a first multicast group of a plurality of multicast groups, wherein the first multicast group is defined by a first multicast group ID of a plurality of multicast group IDs, wherein the membership in the first multicast group is updated by unicast signaling; and

transmit a bitmap in a multicast group message addressed to the first multicast group ID, wherein the multicast group message is transmitted to multiple mobile stations temporarily grouped within the first multicast group, wherein the multicast group message includes unicast control information that is specific to the mobile station and is located at a specific bit position of the bitmap, wherein the bitmap addresses individual users of the first multicast group with respective bit positions of the bitmap known from the unicast signaling update of the first multicast group, and wherein the mobile station disregards bitmaps associated with multicast groups defined by second multicast group IDs other than the first multicast group ID.

18. The base station of claim 17, wherein the first multicast group is further defined by temporarily grouping mobile stations sharing a common parameter that is a layer 1 parameter.

19. The base station of claim 17, wherein the first multicast group is further defined by temporarily grouping mobile stations sharing a common parameter that is a layer 2 parameter.

20. The base station of claim 17, wherein the first multicast group is further defined by temporarily grouping mobile stations sharing a common parameter, wherein the first multicast group ID is the common parameter.

21. The base station of claim 17, wherein the mobile station is grouped within the first multicast group semi-statically.

22. The base station of claim 17, wherein the first multicast group ID is a medium access control (MAC) ID relating to at least one of MAC and physical layer resources in a wireless communications system.