Method and system for uplink acknowledgement signaling in carrier-aggregated wireless communication systems

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.

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.

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.

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.

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.

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.

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.