Acknowledgement channel design for wireless networks

• US 8,208,362 B2
• Filed: 09/03/2009
• Issued: 06/26/2012
• Est. Priority Date: 09/05/2008
• Status: Active Grant

• Current Assignee: Nokia Solutions and Networks US LLC (Nokia Corporation)
• Original Assignee: Nokia Solutions and Networks US LLC (Nokia Corporation)
• Inventors: Qi, Xin, Wang, He
• Primary Examiner(s): Phan, Tri H
• Application Number:
  US12/553,644
• Publication Number:
  US 20100061327A1
• Time in Patent Office: 1,027 Days
• Field of Search: 370203-210, 370235-2362, 370/252, 370/280, 370319-321, 370/326, 370328-330, 370335-345, 370347-348, 370/522, 375130-132, 375259-260, 375/267, 375/275, 375/299, 375/335, 375/347, 714/779, 714/790
• US Class Current: 370/203
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04L 5/0055 Physical resource allocation for ACK/NACK for physical mapping arrangements in ARQ protocols H04L1/1861
• CPC Class Codes: H04L 5/0094 Indication of how sub-channels of the path are allocated
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

Various example embodiments are disclosed. According to an example embodiment, a technique may include transmitting a message to allocate resources to a mobile station in a wireless network for an uplink acknowledgement channel, the acknowledgement channel including three subtiles including a subtile from each of three different tiles, each of the three tiles including a plurality of subtiles that includes at least one 2×3 subtile that includes two subcarriers by three Orthogonal Frequency Division Multiplexing (OFDM) symbols and at least one 3×2 subtile that includes three subcarriers by two OFDM symbols.

Claims

1. A method comprising:

transmitting a message to allocate resources to a mobile station in a wireless network for an uplink acknowledgement channel, the acknowledgement channel including three subtiles including at least one 2×

N_sym subtile that includes two subcarriers by N_sym Orthogonal Frequency Division Multiplexing (OFDM) symbols.

2. A method of claim 1 and further wherein the three subtiles including at least one subtile from each of three different tiles, each of the three tiles including a plurality of subtiles.

3. A method of claim 2 and further wherein the three subtiles includes at least one 2×

3 subtile that includes two subcarriers by three Orthogonal Frequency Division Multiplexing (OFDM) symbols and at least one 3×

2 subtile that includes three subcarriers by two OFDM symbols.

4. The method of claim 3 wherein the transmitting a message comprises transmitting a message to allocate resources to a mobile station for an uplink acknowledgement channel, each of the three tiles including three 2×

3 subtiles and two 3×

2 subtiles, wherein each of the 2×

3 subtiles includes two subcarriers by three Orthogonal Frequency Division Multiplexing (OFDM) symbols and wherein each of the 3×

2 subtiles include three subcarriers by two OFDM symbols.

5. The method of claim 3 wherein the transmitting a message comprises transmitting a message to allocate resources to a mobile station for an uplink acknowledgement channel, wherein each of the three subtiles of the acknowledgement channel has a same subtile pattern that is either a 2×

3 subtile that includes two subcarriers by three Orthogonal Frequency Division Multiplexing (OFDM) symbols or a 3×

2 subtile that includes three subcarriers by two OFDM symbols.

6. The method of claim 3 wherein the transmitting a message comprises transmitting a message to allocate resources to a mobile station for an uplink acknowledgement channel, wherein each of the three subtiles of the acknowledgement channel is a 2×

3 subtile that includes two subcarriers by three Orthogonal Frequency Division Multiplexing (OFDM) symbols.

7. The method of claim 6 wherein each of the 2×

3 subtiles of the acknowledgement channel includes five data subcarrier symbols and one pilot subcarrier symbol, the pilot subcarrier symbol being provided in one of two middle locations of the subcarrier symbols within the subtile.

8. The method of claim 6 wherein each of the 2×

3 subtiles of the acknowledgement channel includes four data subcarrier symbols and two pilot subcarrier symbols, the pilot subcarrier symbols being provided in middle locations of the subcarrier symbols within the subtile.

9. The method of claim 3 wherein the transmitting a message comprises transmitting a message to allocate resources to a mobile station for an uplink acknowledgement channel, wherein each of the three subtiles of the acknowledgement channel is a 3×

2 subtile that includes three subcarriers by two Orthogonal Frequency Division Multiplexing (OFDM) symbols.

10. The method of claim 9 wherein each of the 3×

2 subtiles of the acknowledgement channel includes five data subcarrier symbols and one pilot subcarrier symbol, the pilot subcarrier symbol being provided in one of two middle locations of the subcarrier symbols within the subtile.

11. The method of claim 9 wherein each of the 3×

2 subtiles of the acknowledgement channel includes four data subcarrier symbols and two pilot subcarrier symbols, the pilot subcarrier symbols being provided in corner locations of the subcarrier symbols within the subtile.

12. The method of claim 9 wherein each of the 3×

2 subtiles of the acknowledgement channel includes four data subcarrier symbols and two pilot subcarrier symbols, the pilot subcarrier symbols being provided in middle locations of the subcarrier symbols within the subtile.

13. The method of claim 3 wherein the transmitting a message comprises transmitting a message to allocate resources to a mobile station for an uplink acknowledgement channel, wherein each of the three tiles includes six subcarriers by seven Orthogonal Frequency Division Multiplexing (OFDM) symbols to provide 42 subcarrier symbols.

14. The method of claim 3 wherein the transmitting a message comprises transmitting a message to allocate resources to a mobile station for an uplink acknowledgement channel, each of the three tiles including three 2×

3 subtiles and four 3×

2 subtiles, wherein each of the 2×

3 subtiles includes two subcarriers by three Orthogonal Frequency Division Multiplexing (OFDM) symbols and wherein each of the 3×

2 subtiles include three subcarriers by two OFDM symbols.

15. The method of claim 2 wherein the transmitting a message comprises transmitting a message to allocate resources to a mobile station for an uplink acknowledgement channel, wherein each of the three tiles includes six subcarriers by N_sym Orthogonal Frequency Division Multiplexing (OFDM) symbols to provide 6*N_sym subcarrier symbols, where N_sym is a number of OFDM symbols per subframe.

16. The method of claim 2 wherein the transmitting a message comprises transmitting a message to allocate resources to a mobile station for an uplink acknowledgement channel, wherein each of the three tiles includes six subcarriers by five Orthogonal Frequency Division Multiplexing (OFDM) symbols to provide 30 subcarrier symbols.

17. The method of claim 1 and further comprising receiving either an acknowledgement or a negative acknowledgement from the mobile station via the allocated acknowledgement channel.

18. The method of claim 1 wherein the transmitting a message comprises transmitting scheduling information or Map information to the mobile station in the wireless network to allocate the resources to the mobile station for the uplink acknowledgement channel.

19. An apparatus comprising:

a wireless transceiver;

a controller coupled to the transceiver;

the apparatus configured to

transmit a message to allocate resources to a mobile station in a wireless network for an uplink acknowledgement channel, the acknowledgement channel including three subtiles including at least one 2×

N_sym subtile that includes two subcarriers by N_sym Orthogonal Frequency Division Multiplexing (OFDM) symbols.

20. A method of claim 19 and further wherein the three subtiles including at least one subtile from each of three different tiles, each of the three tiles including a plurality of subtiles.