# US RE46,569 E1 · Method for implicit conveying of uplink feedback information > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US RE46,569 E1 - Document ID: USRE46569E1 - Status: Granted - Kind: E1 - Application number: 14/963,811 - Filed: 2015-12-09 - Granted: 2017-10-10 - Earliest claimed: 2007-04-11 - Assignees: Telefonaktiebolaget LM Ericsson (publ) - Applicants: Telefonaktiebolaget L M Ericsson (publ) - Inventors: Tobias Tynderfeldt; David Astely; Stefan Parkvall; Per Johan Torsner - Web page: https://patentgrep.com/patent/USRE46569E1 ## CPC - H04L 1/0027: {Scheduling of signalling, e.g. occurrence thereof} - H04L 1/0026: {Transmission of channel quality indication} - H04L 1/0029: {Reduction of the amount of signalling, e.g. retention of useful signalling or differential signalling (power control H04W52/04)} - H04L 5/001: {the frequencies being arranged in component carriers} - H04L 5/0055: {Physical resource allocation for ACK/NACK (for physical mapping arrangements in ARQ protocols H04L1/1861)} - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract Method and apparatus for conveying feedback reports from a data receiving party (300) for data received from a data sending party (302) in a wireless connection. A plurality of feedback resources (304) assigned to different feedback information codes are allocated to the data receiving party for transmitting feedback reports. After checking whether the data was received correctly or not, the data receiving party selects a feedback resource (FR2) with a feedback information code that corresponds to one or more feedback reports on the received data. The data receiving party then sends feedback information on the selected feedback resource to the data sending party, thereby conveying the corresponding feedback information code. In this way, multiple feedback reports can be conveyed in a single feedback resource to the data sending party while still retaining single carrier properties. ## Claims ### Claim 1 A method implemented by a data receiving party for conveying feedback reports from the data receiving party for data received from a data sending party in a wireless connection, the method comprising: obtaining allocation information about a plurality of feedback resources available for transmitting feedback reports, wherein said feedback resources are associated with different feedback information codes that the data receiving party can use be used to convey implicit feedback information on received data; selecting a feedback resource from the plurality of feedback resources available, the selected feedback resource assigned to a feedback information code that corresponds to one or more feedback reports on said received data; and sending explicit feedback information on the selected feedback resource to the data sending party to indicate implicit feedback information different from the explicit feedback information. ### Claim 2 (depends on 1) The method of claim 1, wherein sending feedback information on the selected feedback resource comprises sending explicit feedback information on the selected feedback resource, and wherein the selected feedback resource further indicates implicit feedback information. ### Claim 3 (depends on 1) The method of claim 1, wherein sending feedback information on the selected feedback resource comprises conveying two bits of explicit feedback information using Quadrature Phase-Shift Keying, QPSK, modulation and conveying at least one further bit of implicit feedback information using the feedback resource selection, thereby forming a combined codeword with said two bits of explicit feedback information and at least one further bit of implicit feedback information. ### Claim 4 (depends on 3) The method of claim 3, wherein each bit in the combined codeword formed relates to a specific sub-frame of said received data. ### Claim 5 (depends on 1) The method of claim 1, wherein the data receiving party comprises a terminal and the data sending party comprises a network node. ### Claim 6 (depends on 5) The method of claim 5, wherein obtaining allocation information about a plurality of feedback resources available comprises receiving said allocation information in a control message during a cell selection or handover procedure. ### Claim 7 (depends on 5) The method of claim 5, wherein obtaining allocation information about a plurality of feedback resources available comprises receiving said allocation information based on a downlink scheduling assignment for the terminal or based on which resources said received data is transmitted on from the network node. ### Claim 8 (depends on 1) The method of claim 1, wherein a Time Division Duplex, TDD, or half duplex Frequency Division Duplex, FDD, transmission scheme is employed in a connection between said data sending and receiving parties. ### Claim 9 (depends on 1) The method of claim 1, wherein a Hybrid ARQ protocol is used whereby each feedback report includes an ACK message or a NACK message relating to data in a received sub-frame. ### Claim 10 An apparatus in a data receiving party for conveying feedback reports for data received from a data sending party in a wireless connection, comprising: a resource obtaining circuit configured to obtain allocation information about a plurality of feedback resources available for transmitting feedback reports, wherein said feedback resources are associated with different feedback information codes that the data receiving party can use be used to convey implicit feedback information on received data; a selecting circuit configured to select a feedback resource from the plurality of feedback resources available, the selected feedback resource assigned to a feedback information code that corresponds to one or more feedback reports on said received data; and a sending circuit configured to send explicit feedback information on the selected feedback resource to the data sending party to indicate implicit feedback information different from the explicit feedback information. ### Claim 11 (depends on 10) The apparatus of claim 10, wherein the sending circuit is configured to send feedback information on the selected feedback resource by sending explicit feedback information on the selected feedback resource, and wherein the selected feedback resource further indicates implicit feedback information. ### Claim 12 (depends on 10) The apparatus of claim 10, wherein the sending circuit is configured to send feedback information on the selected feedback resource by conveying two bits of explicit feedback information using Quadrature Phase-Shift Keying, QPSK, modulation and conveying at least one further bit of implicit feedback information using the feedback resource selection, thereby forming a combined codeword with said two bits of explicit feedback information and at least one further bit of implicit feedback information. ### Claim 13 (depends on 12) The apparatus of claim 12, wherein each bit in the combined codeword formed relates to a specific sub-frame of said received data. ### Claim 14 (depends on 10) The apparatus of claim 10, wherein the data receiving party comprises a terminal and the data sending party comprises a network node. ### Claim 15 (depends on 14) The apparatus of claim 14, wherein the resource obtaining circuit is configured to obtain said allocation information by receiving said allocation information in a control message during a cell selection or handover procedure. ### Claim 16 (depends on 14) The apparatus of claim 14, wherein the resource obtaining circuit is configured to obtain said allocation information by receiving said allocation information based on a downlink scheduling assignment for the terminal or based on which resources the data is transmitted on from the network node. ### Claim 17 (depends on 10) The apparatus of claim 10, wherein a Time Division Duplex, TDD, or half duplex Frequency Division Duplex, FDD, transmission scheme is employed in the connection between said data sending and receiving parties. ### Claim 18 (depends on 10) The apparatus of claim 10, wherein the data receiving party is configured to use a Hybrid ARQ protocol whereby each feedback report includes an ACK message or a NACK message relating to data in a received sub-frame. ### Claim 19 A method implemented by a network node for obtaining feedback reports from a terminal for data transmitted to the terminal from the network node in a wireless connection, the method comprising: providing allocation information to the terminal about a plurality of feedback resources available for transmitting explicit feedback information, wherein said feedback resources are associated with different feedback information codes that the terminal can use be used to convey implicit feedback information on received data that is different than the explicit feedback information; receiving feedback information for said transmitted data from the terminal on a feedback resource selected by the terminal; and detecting one or more feedback reports based on the received feedback information code assigned to and the selected feedback resource. ### Claim 20 (depends on 19) The method of claim 19, wherein receiving feedback information on a feedback resource selected by the terminal comprises receiving explicit feedback information on the selected feedback resource, and wherein the selected feedback resource further indicates implicit feedback information. ### Claim 21 (depends on 19) The method of claim 19, wherein receiving feedback information on a feedback resource selected by the terminal comprises detecting which feedback resource the terminal transmits the feedback information on, by detecting a received signal strength and determining if the received signal strength is strong enough to be distinguished from noise and/or interference. ### Claim 22 (depends on 19) The method of claim 19, wherein receiving feedback information on a feedback resource selected by the terminal comprises detecting which feedback resource the terminal transmits the feedback information on, by comparing the received signal strength on all allocated feedback resources and selecting the feedback resource with the highest received signal strength and/or Signal-to-Interference-plus-Noise Ratio, SINR. ### Claim 23 (depends on 19) The method of claim 19, wherein providing allocation information to the terminal comprises sending said allocation information in a control message during a cell selection or handover procedure. ### Claim 24 (depends on 19) The method of claim 19, wherein providing allocation information to the terminal comprises providing said resource allocation information based on a downlink scheduling assignment for the terminal or based on which resources the data is transmitted on from the network node. ### Claim 25 An apparatus in a network node for obtaining feedback reports from a terminal for data transmitted to the terminal from the network node in a wireless connection, comprising: a resource providing circuit configured to provide allocation information to the terminal about a plurality of feedback resources available for transmitting explicit feedback information, wherein said feedback resources are associated with different feedback information codes that the terminal can use be used to convey implicit feedback information on received data that is different than the explicit feedback information; a receiving circuit configured to receive feedback information for said transmitted data from the terminal on a feedback resource selected by the terminal; and a detecting circuit configured to detect one or more feedback reports based on the received feedback information code assigned to and the selected feedback resource. ### Claim 26 (depends on 25) The apparatus of claim 25, wherein the receiving circuit is configured to receive explicit feedback information on the selected feedback resource and implicit feedback information as indicated by the selected feedback resource. ### Claim 27 (depends on 25) The apparatus of claim 25, wherein the receiving circuit is configured to detect which feedback resource the terminal transmits the feedback information on, by detecting a received signal strength and determining if the received signal strength is strong enough to be distinguished from noise and/or interference. ### Claim 28 (depends on 25) The apparatus of claim 25, wherein the receiving circuit is configured to detect which feedback resource the terminal transmits the feedback information on, by comparing the received signal strength on all allocated feedback resources and selecting the feedback resource with the highest received signal strength and/or Signal-to-Interference-plus-Noise Ratio, SINR. ### Claim 29 (depends on 25) The apparatus of claim 25, wherein the resource providing circuit is configured to send said allocation information in a control message during a cell selection or handover procedure. ### Claim 30 (depends on 25) The apparatus of claim 25, wherein the resource providing circuit is configured to provide said allocation information based on a downlink scheduling assignment for the terminal or based on which resources the data is transmitted on from the network node.