METHOD AND SYSTEM FOR UPLINK ACKNOWLEDGEMENT SIGNALING IN CARRIER-AGGREGATED WIRELESS COMMUNICATION SYSTEMS

• US 20110235599A1
• Filed: 03/14/2011
• Published: 09/29/2011
• Est. Priority Date: 03/29/2010
• Status: Abandoned Application

• Current Assignee: Samsung Electronics Co. Ltd. (Samsung Group)
• Original Assignee: Samsung Electronics Co. Ltd. (Samsung Group)
• Inventors: Cho, Joonyoung, Zhang, Jianzhong, Nam, Young-Han
• Application Number:
  US13/047,557
• Publication Number:
  US 20110235599A1
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04L 1/0027 Scheduling of signalling, e.g. occurrence thereof
• CPC Class Codes: H04L 1/1854 Scheduling and prioritising arrangements
• CPC Class Codes: H04L 5/001 the frequencies being arranged in component carriers
• 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 72/02 Selection of wireless resources by user or terminal
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network

Abstract

A base station includes a transmit path circuitry to transmit DL grant, data streams, and a control signal to configure a number of uplink transmit antenna ports PUCCH to a subscriber station. The base station also includes a receive path circuitry to receive ACK/NACK modulation in response to the data streams. If the subscriber station is configured to transmit ACK/NACK using one uplink transmit antenna port and channel selection with PUCCH format 1B, a modulation symbol is transmitted on one (PUCCH) i determined based at least partly upon a channel selection mapping table. If the subscriber station is configured to transmit ACK/NACK using two uplink transmit antenna ports and channel selection with PUCCH format 1B, the ACK/NACK modulation symbol is transmitted on two PUCCHs.

Claims

1. A base station comprising:

a transmit path circuitry configured to transmit a downlink (DL) grant, data streams, and a control signal to configure a number of uplink transmit antenna ports for physical uplink control channel (PUCCH) to a subscriber station; and

a receive path circuitry configured to receive ACKnowledgement/Negative ACKnowledgement (ACK/NACK) from the subscriber station in response to the data streams,

wherein if the subscriber station is configured by the base station to transmit ACK/NACK using one uplink transmit antenna port and channel selection with PUCCH format 1B, a modulation symbol is transmitted on one physical uplink control channel (PUCCH) i determined based at least partly upon a channel selection mapping table, and

wherein if the subscriber station is configured by the base station to transmit ACK/NACK using two uplink transmit antenna ports and channel selection with PUCCH format 1B, the ACK/NACK modulation symbol is transmitted on two PUCCHs, and

wherein a first channel of the two PUCCHs is PUCCH i determined based at least partly upon the channel selection mapping table and a second channel of the two PUCCHs is determined implicitly by a function depending on at least one of i, L, and M,

where L is a number of uplink control channels allocated for the subscriber station'"'"'s ACK/NACK, and M is a number of ACK/NACK bits conveyed in a transmission in a subframe.

2. The base station of claim 1, wherein the second channel is determined using (i+1)mod L.

3. The base station of claim 1, wherein L is determined using the following table:

4. The base station of claim 1, wherein the second channel is determined using (i+M)mod L.

5. The base station of claim 1, wherein L is determined using the following table:

6. A method of operating a base station, the method comprising:

transmitting a downlink (DL) grant, data streams, and a control signal to configure a number of uplink transmit antenna ports for physical uplink control channel (PUCCH) to a subscriber station; and

receiving ACKnowledgement/Negative ACKnowledgement (ACK/NACK) from the subscriber station in response to the data streams,

wherein if the subscriber station is configured by the base station to transmit ACK/NACK using one uplink transmit antenna port and channel selection with PUCCH format 1B, a modulation symbol is transmitted on one physical uplink control channel (PUCCH) i determined based at least partly upon a channel selection mapping table, and

wherein if the subscriber station is configured by the base station to transmit ACK/NACK using two uplink transmit antenna ports and channel selection with PUCCH format 1B, the ACK/NACK modulation symbol is transmitted on two PUCCHs, and

wherein a first channel of the two PUCCHs is PUCCH i determined based at least partly upon the channel selection mapping table and a second channel of the two PUCCHs is determined implicitly by a function depending on at least one of i, L, and M,

where L is a number of uplink control channels allocated for the subscriber station'"'"'s ACK/NACK, and M is a number of ACK/NACK bits conveyed in a transmission in a subframe.

7. The method of claim 6, wherein the second channel is determined using (i+1)mod L.

8. The method of claim 6, wherein L is determined using the following table:

9. The method of claim 6, wherein the second channel is determined using (i+M)mod L.

10. The method of claim 6, wherein L is determined using the following table:

11. A subscriber station comprising:

a receive path circuitry configured to receive a downlink (DL) grant, data streams, and a control signal to configure a number of uplink transmit antenna ports for physical uplink control channel (PUCCH) from a base station; and

a transmit path circuitry configured to transmit ACKnowledgement/Negative ACKnowledgement (ACK/NACK) to the base station in response to the data streams,

wherein if the subscriber station is configured by the base station to transmit ACK/NACK using one uplink transmit antenna port and channel selection with PUCCH format 1B, a modulation symbol is transmitted on one physical uplink control channel (PUCCH) i determined based at least partly upon a channel selection mapping table, and

wherein if the subscriber station is configured by the base station to transmit ACK/NACK using two uplink transmit antenna ports and channel selection with PUCCH format 1B, the ACK/NACK modulation symbol is transmitted on two PUCCHs, and

wherein a first channel of the two PUCCHs is PUCCH i determined based at least partly upon the channel selection mapping table and a second channel of the two PUCCHs is determined implicitly by a function depending on at least one of i, L, and M,

where L is a number of uplink control channels allocated for the subscriber station'"'"'s ACK/NACK, and M is a number of ACK/NACK bits conveyed in a transmission in a subframe.

12. The subscriber station of claim 11, wherein the second channel is determined using (i+1)mod L.

13. The subscriber station of claim 11, wherein L is determined using the following table:

14. The subscriber station of claim 11, wherein the second channel is determined using (i+M)mod L.

15. The subscriber station of claim 11, wherein L is determined using the following table:

16. A method of operating a subscriber station, the method comprising:

receiving a downlink (DL) grant, data streams, and a control signal to configure a number of uplink transmit antenna ports for physical uplink control channel (PUCCH) from a base station; and

transmitting ACKnowledgement/Negative ACKnowledgement (ACK/NACK) to the base station in response to the data streams,

wherein if the subscriber station is configured by the base station to transmit ACK/NACK using one uplink transmit antenna port and channel selection with PUCCH format 1B, a modulation symbol is transmitted on one physical uplink control channel (PUCCH) i determined based at least partly upon a channel selection mapping table, and

wherein if the subscriber station is configured by the base station to transmit ACK/NACK using two uplink transmit antenna ports and channel selection with PUCCH format 1B, the ACK/NACK modulation symbol is transmitted on two PUCCHs, and

wherein a first channel of the two PUCCHs is PUCCH i determined based at least partly upon the channel selection mapping table and a second channel of the two PUCCHs is determined implicitly by a function depending on at least one of i, L, and M,

where L is a number of uplink control channels allocated for the subscriber station'"'"'s ACK/NACK, and M is a number of ACK/NACK bits conveyed in a transmission in a subframe.

17. The method of claim 16, wherein the second channel is determined using (i+1)mod L.

18. The method of claim 16, wherein L is determined using the following table:

19. The method of claim 16, wherein the second channel is determined using (i+M)mod L.

20. The method of claim 16, wherein L is determined using the following table:

21. A base station comprising:

a transmit path circuitry configured to transmit a downlink (DL) grant, data streams, and a control signal to configure a number of uplink transmit antenna ports for physical uplink control channel (PUCCH) to a subscriber station; and

a receive path circuitry configured to receive an ACKnowledgement/Negative ACKnowledgement (ACK/NACK) from the subscriber station in response to the data streams,

wherein if the subscriber station is configured by the base station to transmit ACK/NACK using two uplink transmit antenna ports and channel selection with PUCCH format 1B, the configuration of two uplink transmit antenna ports is overridden and the modulation symbol is mapped to only one PUCCH on one transmit antenna port, and

wherein if the subscriber station is configured by the base station to transmit ACK/NACK using two uplink transmit antenna ports and PUCCH format 1A/1B, the modulation symbol is mapped onto two uplink transmit antenna ports on two PUCCHs.

22. A method of operating a base station, the method comprising:

transmitting a downlink (DL) grant, data streams, and a control signal to configure a number of uplink transmit antenna ports for physical uplink control channel (PUCCH) to a subscriber station; and

receiving an ACKnowledgement/Negative ACKnowledgement (ACK/NACK) from the subscriber station in response to the data streams,

wherein if the subscriber station is configured by the base station to transmit ACK/NACK using two uplink transmit antenna ports and channel selection with PUCCH format 1B, the configuration of two uplink transmit antenna ports is overridden and the modulation symbol is mapped to only one PUCCH on one transmit antenna port, and

wherein if the subscriber station is configured by the base station to transmit ACK/NACK using two uplink transmit antenna ports and PUCCH format 1A/1B, the modulation symbol is mapped onto two uplink transmit antenna ports on two PUCCHs.

23. A subscriber station comprising:

a receive path circuitry configured to receive a downlink (DL) grant, data streams, and a control signal to configure a number of uplink transmit antenna ports for physical uplink control channel (PUCCH) from a base station; and

a transmit path circuitry configured to transmit an ACKnowledgement/Negative ACKnowledgement (ACK/NACK) to the base station in response to the data streams,

wherein if the subscriber station is configured by the base station to transmit ACK/NACK using two uplink transmit antenna ports and channel selection with PUCCH format 1B, the configuration of two uplink transmit antenna ports is overridden and the modulation symbol is mapped to only one PUCCH on one transmit antenna port, and

wherein if the subscriber station is configured by the base station to transmit ACK/NACK using two uplink transmit antenna ports and PUCCH format 1A/1B, the modulation symbol is mapped onto two uplink transmit antenna ports on two PUCCHs.

24. The subscriber station of claim 23, wherein if the subscriber station is configured by the base station to transmit ACK/NACK using two uplink transmit antenna ports and channel selection with format 1B, then the modulation symbol is mapped onto one physical uplink-control channel, the one PUCCH being transmitted on multiple physical transmit antennas corresponding to one uplink transmit antenna port.

25. A method of operating a subscriber station, the method comprising:

receiving a downlink (DL) grant, data streams, and a control signal to configure a number of uplink transmit antenna ports for physical uplink control channel (PUCCH) from a base station; and

transmitting an ACKnowledgement/Negative ACKnowledgement (ACK/NACK) modulation symbol to the base station in response to the data streams,

wherein if the subscriber station is configured by the base station to transmit ACK/NACK using two uplink transmit antenna ports and channel selection with PUCCH format 1B, the configuration of two uplink transmit antenna ports is overridden and the modulation symbol is mapped to only one PUCCH on one transmit antenna port, and

wherein if the subscriber station is configured by the base station to transmit ACK/NACK using two uplink transmit antenna ports and PUCCH format 1A/1B, the modulation symbol is mapped onto two uplink transmit antenna ports on two PUCCHs.

26. The method of claim 25, wherein if the subscriber station is configured by the base station to transmit ACK/NACK using two uplink transmit antenna ports and channel selection with format 1B, then the modulation symbol is mapped onto one physical uplink-control channel, the one PUCCH being transmitted on multiple physical transmit antennas corresponding to one uplink transmit antenna port.