# US 9,439,192 B2 · Method and apparatus for sending feedback for a downlink shared service transmitted to a plurality of wireless transmit/receive units > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,439,192 B2 - Document ID: US9439192B2 - Status: Granted - Kind: B2 - Application number: 13/956,777 - Filed: 2013-08-01 - Published: 2013-11-28 - Granted: 2016-09-06 - Earliest claimed: 2006-10-10 - Assignees: InterDigital Technology Corporation - Applicants: InterDigital Technology Corporation - Inventors: Alexander Reznik; Eldad M. Zeira; Christopher R. Cave; Paul Marinier - Web page: https://patentgrep.com/patent/US9439192B2 ## CPC - H04W 72/0453: Resources in frequency domain, e.g. a carrier in FDMA - H04L 1/0025: {Transmission of mode-switching indication} - H04L 1/0073: {Special arrangements for feedback channel} - H04L 1/1671: {the supervisory signal being transmitted together with control information} - H04L 1/1887: {Scheduling and prioritising arrangements} - H04W 52/146: {Uplink power control} - H04W 52/228: {using past power values or information} - H04W 52/247: {where the output power of a terminal is based on a path parameter sent by another terminal} - H04W 52/325: {Power control of control or pilot channels} - H04W 4/06: Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract A wireless transmit/receive units (WTRUs) receives a downlink transmission from a Node-B and decodes the downlink transmission. If the decoding is not successful, the WTRU sends a pre-defined burst signifying a negative acknowledgement (NACK) to the Node-B via a contention-based shared feedback channel. The pre-defined burst may be sent only once without requiring an acknowledgement. The Node-B calibrates a downlink transmit power so that the downlink transmission is transmitted to the WTRUs with a high likelihood. The Node-B may send a downlink transmission including multiple data streams processed using different modulation and coding schemes so that a WTRU having a high signal quality decodes all data streams while a WTRU having a low signal quality decodes less than all data streams. The Node-B sends a channel quality indicator (CQI) threshold so that each WTRU determines a data stream to report feedback based on the CQI threshold and a measured CQI. ## Claims ### Claim 1 A method for sending feedback in wireless communication, comprising: receiving, by a wireless transmit/receive unit (WTRU), a message via radio resource control (RRC) signaling, wherein the message indicates a configuration for transmissions by the WTRU on a physical uplink channel, wherein different portions of the physical uplink channel are used to transmit different types of feedback information; transmitting, by the WTRU, a first feedback information on the physical uplink channel, wherein the first feedback information includes acknowledgement feedback information; and transmitting, by the WTRU, a second feedback information on the physical uplink channel, wherein the second feedback information includes a channel quality indicator, wherein the acknowledgement feedback information is transmitted on a first frequency resource associated with the physical uplink channel and the channel quality indicator is transmitted on a second frequency resource associated with the physical uplink channel. ### Claim 2 (depends on 1) The method of claim 1, wherein the first frequency resource and the second frequency resource are different subcarriers. ### Claim 3 (depends on 1) The method of claim 1, wherein the acknowledgement feedback information is modulated using on-off keying. ### Claim 4 (depends on 1) The method of claim 1, further comprising: determining a number of streams to report channel quality indicator information using a threshold. ### Claim 5 (depends on 1) The method of claim 1, further comprising: receiving a power command on a downlink control channel; and setting a transmission power level for the physical uplink channel in response to the received power command. ### Claim 6 (depends on 5) The method of claim 5, further comprising: receiving an offset value; and transmitting on the physical uplink channel at a transmission power level determined based on the offset value. ### Claim 7 A wireless transmit/receive unit (WTRU) for sending feedback in wireless communication, the WTRU comprising: a processor configured to: receive a message via radio resource control (RRC) signaling, wherein the message indicates a configuration for transmissions by the WTRU on a physical uplink channel, wherein different portions of the physical uplink channel are used to transmit different types of feedback information, transmit a first feedback information on the physical uplink channel, wherein the first feedback information includes acknowledgement feedback information, and transmit a second feedback information on the physical uplink channel, wherein the second feedback information includes a channel quality indicator, wherein the processor is configured to transmit the acknowledgement feedback information on a first frequency resource associated with the physical uplink channel and the channel quality indicator on a second frequency resource associated with the physical uplink channel. ### Claim 8 (depends on 7) The WTRU of claim 7, wherein the first frequency resource and the second frequency resource are different subcarriers. ### Claim 9 (depends on 7) The WTRU of claim 7, wherein the acknowledgement feedback information is modulated using on-off keying. ### Claim 10 (depends on 7) The WTRU of claim 7, wherein the processor is configured to determine a number of streams to report channel quality indicator information using a threshold. ### Claim 11 (depends on 7) The WTRU of claim 7, wherein the processor is configured to receive a power command on a downlink control channel and set a transmission power level for the physical uplink channel in response to the received power command. ### Claim 12 (depends on 11) The WTRU of claim 11, wherein the processor is configured receive an offset value, and transmit on the physical uplink channel at a transmission power level determined based on the offset value. ### Claim 13 A network device for receiving feedback from a wireless transmit/receive unit (WTRU), the network device comprising: a processor configured to: transmit a message via radio resource control (RRC) signaling to the WTRU, wherein the message indicates a configuration for transmissions by the WTRU on a physical uplink channel, wherein different portions of the physical uplink channel are used to receive different types of feedback information, and receive a first feedback information on the physical uplink channel from the WTRU, wherein the first feedback information includes acknowledgement feedback information, and receive a second feedback information on the physical uplink channel from the WTRU, wherein the second feedback information includes a channel quality indicator, wherein the processor is configured to receive the acknowledgement feedback information on a first frequency resource associated with the physical uplink channel and the channel quality indicator on a second frequency resource associated with the physical uplink channel. ### Claim 14 (depends on 13) The network device of claim 13, wherein the first frequency resource and the second frequency resource are different subcarriers. ### Claim 15 (depends on 13) The network device of claim 13, wherein the acknowledgement feedback information is modulated using on-off keying. ### Claim 16 (depends on 13) The network device of claim 13, wherein the processor is configured to transmit a power command on a downlink control channel to set a transmission power level for the physical uplink channel. ### Claim 17 (depends on 16) The network device of claim 16, wherein the processor is configured to transmit an offset value to adjust the transmission power level for the physical uplink channel. ### Claim 18 (depends on 1) The method of claim 1, wherein the feedback information is transmitted using a quandrature phase shifting key (QPSK) or a binary phase shifting key (BPSK). ### Claim 19 (depends on 1) The method of claim 1, wherein the first feedback information is transmitted on the physical uplink channel without an explicit transmission of a data type indicator that identifies the acknowledgement feedback information, and wherein the second feedback information is transmitted on the physical uplink channel without an explicit transmission of a data type indicator that identifies the channel quality indicator. ### Claim 20 (depends on 7) The WTRU of claim 7, wherein the processor is configured to transmit the feedback information using a quandrature phase shifting key (QPSK) or a binary phase shifting key (BPSK). ### Claim 21 (depends on 7) The WTRU of claim 7, wherein the processor is configured to transmit the first feedback information on the physical uplink channel without an explicit transmission of a data type indicator that identifies the acknowledgement feedback information, and wherein the processor is configured to transmit the second feedback information on the physical uplink channel without an explicit transmission of a data type indicator that identifies the channel quality indicator. ### Claim 22 (depends on 13) The network device of claim 13, wherein the processor is configured to receive the feedback information via a quandrature phase shifting key (QPSK) or a binary phase shifting key (BPSK). ### Claim 23 (depends on 13) The network device of claim 13, wherein the processor is configured to receive the first feedback information on the physical uplink channel without an explicit data type indicator that identifies the acknowledgement feedback information, and wherein the processor is configured to receive the second feedback information on the physical uplink channel without an explicit data type indicator that identifies the channel quality indicator.