# US 9,438,401 B2 · Method and apparatus for sending uplink control information for multi-radio access technology operation

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- Number: US 9,438,401 B2
- Document ID: US9438401B2
- Status: Granted
- Kind: B2
- Application number: 14/512,829
- Filed: 2014-10-13
- Published: 2015-01-29
- Granted: 2016-09-06
- Earliest claimed: 2011-03-07
- Assignees: InterDigital Patent Holdings, Inc.
- Applicants: Interdigital Patent Holdings, Inc.
- Inventors: Paul Marinier; Diana Pani; Ghyslain Pelletier; Marian Rudolf
- Web page: https://patentgrep.com/patent/US9438401B2

## CPC

- H04W 74/004: {in the uplink, i.e. towards network}
- H04B 7/0626: {Channel coefficients, e.g. channel state information [CSI]}
- H04B 7/0632: {Channel quality parameters, e.g. channel quality indicator [CQI]}
- H04B 7/0639: {Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection}
- H04L 1/1861: {Physical mapping arrangements (for ACK signaling see also H04L5/0053)}
- H04L 5/0007: {the frequencies being orthogonal, e.g. OFDM(A) or DMT}
- H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals}
- H04W 72/0453: Resources in frequency domain, e.g. a carrier in FDMA
- H04W 72/21: in the uplink direction of a wireless link, i.e. towards the network
- H04W 74/006: {in the downlink, i.e. towards the terminal}
- H04W 88/06: adapted for operation in multiple networks {or having at least two operational modes}, e.g. multi-mode terminals
- H04L 1/0031: {Multiple signaling transmission (H04L1/1664, F15 take precedence)}
- H04L 1/0072: {Error control for data other than payload data, e.g. control data}
- H04L 1/1671: {the supervisory signal being transmitted together with control information}
- H04L 5/0057: {Physical resource allocation for CQI}
- H04L 2001/0092: {Error control systems characterised by the topology of the transmission link}
- H04W 12/10: Integrity
- H04W 24/10: Scheduling measurement reports {; Arrangements for measurement reports}
- H04W 72/12: Wireless traffic scheduling
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)
- H04B: TRANSMISSION
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)

## Abstract

A method and apparatus for sending uplink control information (UCI) by a multi-mode wireless transmit/receive unit (WTRU) capable of operating on multiple component carriers of a plurality of radio access technologies (RATs) for multi-RAT operation are disclosed. The multi-mode WTRU may generate first UCI pertaining to a first RAT and second UCI pertaining to a second RAT. The WTRU may then send at least part of the first UCI and least part of the second UCI via a feedback channel on a component carrier of a second RAT. The first RAT may be Long Term Evolution (LTE) and the second RAT may be LTE-Advanced (LTE-A), or vice versa. Each RAT may operate on a different frequency. The UCI of the RATs may be multiplexed onto a carrier of any one of the RATs. The UCI bits for a pair of, or multiple, serving cells may be jointly encoded.

## Claims

### Claim 1

A method for sending uplink control information (UCI) by a multi-mode wireless transmit/receive unit (WTRU) capable of operating on multiple component carriers of a plurality of radio access technologies (RATs) for multi-RAT operation, the method comprising:
generating first UCI pertaining to a first RAT, wherein the first RAT is one of Long Term Evolution (LTE) and LTE-Advanced (LTE-A), and second UCI pertaining to a second RAT, wherein the second RAT is one of LTE and LTE-A, wherein the first UCI includes a first channel quality indicator (CQI) and the second UCI includes a second CQI;
multiplexing at least part of the first UCI pertaining to the first RAT and at least part of the second UCI pertaining to the second RAT onto a physical layer channel on a component carrier of the second RAT; and
sending the physical layer channel, wherein a particular UCI is prioritized over another UCI in accordance with a priority rule.

### Claim 2 (depends on 1)

The method of claim 1 wherein, the first UCI further includes at least one of hybrid automatic repeat request acknowledgement (HARQ-ACK), a precoding matrix indicator (PMI), a rank indication (RI), a pre-coding control indication (PCI), a scheduling request (SR), an Enhanced Dedicated Channel (E-DCH) transport format combination indicator (E-TFCI), a happy bit, and a retransmission sequence number (RSN); and
wherein, the second UCI further includes at least one of HARQ-ACK, a PMI, an RI, a PCI, an SR, an E-TFCI, a happy bit, and an RSN.

### Claim 3 (depends on 1)

The method of claim 1 wherein, the first RAT is LTE operating on a first frequency and the second RAT is LTE-A operating on a second frequency.

### Claim 4 (depends on 1)

The method of claim 1 wherein, the first RAT operates on a first frequency and the second RAT operates on a second frequency.

### Claim 5 (depends on 1)

The method of claim 1 wherein, the first RAT is LTE-A operating on a first frequency and the second RAT is LTE operating on a second frequency.

### Claim 6 (depends on 1)

The method of claim 1 wherein, the first RAT is LTE operating on a first frequency and the second RAT is LTE operating on a second frequency.

### Claim 7 (depends on 1)

The method of claim 1 wherein, the first RAT is LTE-A operating on a first frequency and the second RAT is LTE-A operating on a second frequency.

### Claim 8 (depends on 4)

The method of claim 4 wherein, the second frequency is a higher frequency than the first frequency.

### Claim 9

A multi-mode wireless transmit/receive unit (WTRU) capable of operating on multiple component carriers of a plurality of radio access technologies (RATs) for multi-RAT operation, the WTRU comprising:
a processor configured to generate first uplink control information (UCI) pertaining to a first RAT, wherein the first RAT is one of Long Term Evolution (LTE) and LTE-Advanced (LTE-A), and second UCI pertaining to a second RAT, wherein the second RAT is one of LTE and LTE-A, wherein the first UCI includes a first channel quality indicator (CQI) and the second UCI includes a second CQI;
the processor further configured to multiplex at least part of the UCI pertaining to the first RAT and at least part of the UCI pertaining to the second RAT onto a physical layer channel on a component carrier of the second RAT; and
a transceiver operatively coupled to the processor, the transceiver and the processor configured to send the physical layer channel, wherein a particular UCI is prioritized over another UCI in accordance with a priority rule.

### Claim 10 (depends on 9)

The WTRU of claim 9 wherein, the first UCI further includes at least one of hybrid automatic repeat request acknowledgement (HARQ-ACK), a precoding matrix indicator (PMI), a rank indication (RI), a pre-coding control indication (PCI), a scheduling request (SR), an Enhanced Dedicated Channel (E-DCH) transport format combination indicator (E-TFCI), a happy bit, and a retransmission sequence number (RSN); and
wherein, the second UCI further includes at least one of HARQ-ACK, a PMI, an RI, a PCI, an SR, an E-TFCI, a happy bit, and an RSN.

### Claim 11 (depends on 9)

The WTRU of claim 9 wherein, the first RAT is LTE operating on a first frequency and the second RAT is LTE-A operating on a second frequency.

### Claim 12 (depends on 9)

The WTRU of claim 9 wherein, the first RAT operates on a first frequency and the second RAT operates on a second frequency.

### Claim 13 (depends on 9)

The WTRU of claim 9 wherein, the first RAT is LTE-A operating on a first frequency and the second RAT is LTE operating on a second frequency.

### Claim 14 (depends on 9)

The WTRU of claim 9 wherein, the first RAT is LTE operating on a first frequency and the second RAT is LTE operating on a second frequency.

### Claim 15 (depends on 9)

The WTRU of claim 9 wherein, the first RAT is LTE-A operating on a first frequency and the second RAT is LTE-A operating on a second frequency.

### Claim 16 (depends on 12)

The WTRU of claim 12 wherein, the second frequency is a higher frequency than the first frequency.

### Claim 17 (depends on 4)

The method of claim 4 wherein, the second frequency is a lower frequency than the first frequency.

### Claim 18 (depends on 12)

The WTRU of claim 12 wherein, the second frequency is a lower frequency than the first frequency.