Physical layer acknowledgement signaling resource allocation in wireless communication systems

• US 9,450,727 B2
• Filed: 02/03/2009
• Issued: 09/20/2016
• Est. Priority Date: 02/03/2009
• Status: Active Grant

• Current Assignee: Google Technology Holdings LLC (Alphabet Inc.)
• Original Assignee: Google Technology Holdings LLC (Alphabet Inc.)
• Inventors: Nory, Ravikiran, Love, Robert T, Nangia, Vijay, Zhuang, Xiangyang
• Primary Examiner(s): Liu, Jung-Jen
• Application Number:
  US12/364,992
• Publication Number:
  US 20100195583A1
• Time in Patent Office: 2,786 Days
• Field of Search: 370328-330, 370/336, 370/341, 370/343, 370/436, 370/437, 370/442, 370/458, 370/468, 370/478, 370/480, 370/498, 370/537, 370/229
• US Class Current: 1/1
• CPC Class Codes: H04L 1/0071 Use of interleaving interleaving per se H03M13/27
• CPC Class Codes: H04L 1/06 using space diversity
• CPC Class Codes: H04L 1/1812 Hybrid protocols; Hybrid automatic repeat request [HARQ]
• CPC Class Codes: H04L 1/1854 Scheduling and prioritising arrangements
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• CPC Class Codes: H04L 5/0023 Time-frequency-space
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0055 Physical resource allocation for ACK/NACK for physical mapping arrangements in ARQ protocols H04L1/1861
• CPC Class Codes: H04W 88/12 Access point controller devices

Abstract

A downlink subframe on a single downlink carrier supports physical layer acknowledgment signaling for multiple physical uplink shared channel (PUSCH) transmissions. The physical layer acknowledgement signaling may take the form of physical hybrid ARQ indicator channel (PHICH) signaling. A base unit reserves resource elements groups (REGs) for default PHICH signaling of default PUSCH transmissions. The base unit reserves control channel elements (CCEs) for physical downlink control channel (PDCCH) signaling. A CCE contains multiple interleaved REGs. The base unit takes any unreserved CCEs and maps those CCEs for physical layer acknowledgement signaling of additional PUSCH transmissions.

Claims

1. A method in a wireless communication network infrastructure entity comprising:

receiving transmissions on a first physical uplink shared channel from a first component carrier;

receiving transmissions on a second physical uplink shared channel from a second component carrier;

transmitting a first downlink subframe with a first control channel element, mapped for physical downlink control channel signaling, and with at least one resource element group, which contains multiple resource elements, mapped for physical layer acknowledgement signaling of the second physical uplink shared channel; and

transmitting a second downlink subframe with a second control channel element, mapped for physical layer acknowledgement signaling of the first physical uplink shared channel,

wherein a first control channel element index number of the first control channel element is equal to a second control channel element index number of the second control channel element.

2. A method according to claim 1 wherein the receiving transmissions on the first physical uplink shared channel comprises receiving transmissions from a first spatial channel;

and wherein the receiving transmissions on the second physical uplink shared channel comprises receiving transmissions from a second spatial channel.

3. A method according to claim 1 wherein the receiving transmissions on the first physical uplink shared channel comprises receiving transmissions from a first subframe;

and wherein the receiving transmissions on the second physical uplink shared channel comprises receiving transmissions from a second subframe.

4. A method according to claim 1 further comprising:

reserving resource elements for reference signaling.

5. A method according to claim 1 further comprising:

reverting transmitting a third downlink subframe with a third control channel element mapped for to physical downlink control channel signaling,

wherein a third control channel element index number of the third control channel element matches the second control channel element index number.

6. A method according to claim 1 further comprising:

transmitting an indication of the second control channel element.

7. A method according to claim 6 further wherein indicating comprises:

transmitting a quantity of control channel elements mapped for physical layer acknowledgement signaling on a radio resource control signal.

8. A method according to claim 6 further wherein indicating comprises:

transmitting the second control channel element index number on a radio resource control signal.

9. A method according to claim 1, wherein the second control channel element contains nine resource element groups and wherein at least one resource element group contains at least four resource elements.

10. A method according to claim 9 further comprising:

receiving a third downlink subframe with a third control channel element mapped for physical downlink control channel signaling;

wherein the third downlink subframe is received prior to the receiving the first downlink subframe, and a third control channel element index number of the third control channel element matches the first control channel element index number.

11. A method in a wireless communication device comprising:

transmitting on a first physical uplink shared channel on a first component carrier;

transmitting on a second physical uplink shared channel on a second component carrier;

receiving a first downlink subframe with a first control channel element, mapped for physical downlink control channel signaling, and with at least one resource element group, mapped for physical layer acknowledgement signaling, of the second physical uplink shared channel;

determining physical layer acknowledgement signaling for the second physical uplink shared channel in the first control channel element; and

receiving a second downlink subframe with a second control channel element, mapped for physical downlink control channel signaling of the first physical uplink shared channel,

wherein a first control channel element index number of the first control channel element matches a second control channel element index number of the second control channel element.

12. A method according to claim 11 further comprising:

determining physical layer acknowledgement signaling for the first physical uplink shared channel in the resource element group.

13. A method according to claim 11 comprising:

receiving an indication that the first control channel element has been mapped for physical layer acknowledgement signaling.

14. A method according to claim 13 wherein the receiving an indication comprises:

receiving control channel signaling for more than one physical uplink shared channel.

15. A method according to claim 13 wherein the receiving an indication comprises:

determining a quantity of physical uplink shared channels from control channel signaling; and

deriving the first control channel element index number from the quantity of physical uplink shared channels.

16. A method according to claim 13 wherein the receiving an indication comprises:

receiving a quantity of control channel elements mapped for physical layer acknowledgement signaling on a radio resource control signal.

17. A method according to claim 13 wherein the receiving an indication comprises:

receiving the first control channel element index number on a radio resource control signal.