# US 10,873,419 B2 · Method and a device for improved status reports > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,873,419 B2 - Document ID: US10873419B2 - Status: Granted - Kind: B2 - Application number: 15/650,062 - Filed: 2017-07-14 - Published: 2017-11-02 - Granted: 2020-12-22 - Earliest claimed: 2007-10-30 - Assignees: Telefonaktiebolaget LM Ericsson (publ) - Applicants: Telefonaktiebolaget L M Ericsson (Publ) - Inventors: Johan Torsner; Michael Meyer; Henning Wiemann - Web page: https://patentgrep.com/patent/US10873419B2 ## CPC - H04L 1/1671: {the supervisory signal being transmitted together with control information} - H04L 1/1621: {Group acknowledgement, i.e. the acknowledgement message defining a range of identifiers, e.g. of sequence numbers} - H04L 1/1642: {Formats specially adapted for sequence numbers} - H04L 1/165: {Variable formats} - H04L 5/0055: {Physical resource allocation for ACK/NACK (for physical mapping arrangements in ARQ protocols H04L1/1861)} - H04W 72/20: Control channels or signalling for resource management - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract A method for use in a cellular communications system in which system traffic can be exchanged between transceivers comprises receiving traffic from a second transceiver at a first transceiver. The traffic includes data units that are each associated with an identifier. The data units are also divided into segments. The method additionally includes sending status information from the first transceiver to the second transceiver. The status information pertains to one or more data units transmitted by the second transceiver. Additionally, sending the status information includes, for non-received and partially received data units, sending information indicating the data units were non-received or partially received and, for partially received data units, sending information indicating which parts of the data units were not received. ## Claims ### Claim 1 A method, in a receiving transceiver, for use in a cellular communications system, the method comprising: receiving traffic from a sending transceiver in data units, wherein each data unit is given an identifier, and the data units are divided into segments; sending status information in data frames or data units about properly received, partially received, or non-received data units to the sending transceiver, wherein in the case of one or more non-received or partially received data units, the status information includes a message comprising data regarding a non-received or partially received data unit or frame, in the form of a certain sequence number; and indicating, in the case of one or more partially received data units, which parts of the partially received data units that were not received, wherein the message includes a first extension indicator, and a second extension indicator indicating whether the data unit or units were non-received or partially received, and wherein said first extension indicator indicates the absence or presence of another set comprising another of said first and second extension indicators and data regarding a partially or non-received data unit or frame in the form of the identifier of said data unit or frame. ### Claim 2 (depends on 1) The method of claim 1, wherein the status information comprises information regarding whether or not a data unit was partially or non-received, wherein the information indicating whether or not a data unit was partially received or non-received is included as a flag in said data frames or data units. ### Claim 3 (depends on 1) The method of claim 1, wherein sending the status information indicating which parts of a data unit were not received in said data frames or data units comprises sending information which indicates a first and a last part of the non-received data unit. ### Claim 4 (depends on 1) The method of claim 1, wherein sending the status information indicating which parts of a data unit were not received comprises sending information indicating that a last segment of the data unit has not been received. ### Claim 5 (depends on 3) The method of claim 3, wherein sending the status information indicating which parts of the data unit were not received comprises sending a predefined value to indicate that the last part of the data unit has not been received. ### Claim 6 (depends on 1) The method of claim 1, wherein sending the status information indicating which parts of a data unit were not received comprises sending, for the data unit, information which indicates the identifier of the data unit, as well as information about the beginning of the non-received data in said data unit, and the amount of non-received data. ### Claim 7 (depends on 1) The method of claim 1, wherein the receiving transceiver is in an E-UTRAN system. ### Claim 8 (depends on 7) The method of claim 7, wherein said data unit is a Radio Link Control, RLC, Protocol Data Unit, PDU, and said segments are RLC PDU segments. ### Claim 9 (depends on 8) The method of claim 8, wherein the sending transceiver is the eNodeB of an E-UTRAN cell, and the receiving transceiver is a UE, User Equipment, of the E-UTRAN cell. ### Claim 10 (depends on 8) The method of claim 8, wherein the sending transceiver is the UE of an E-UTRAN cell, and the receiving transceiver is the eNodeB of the E-UTRAN cell. ### Claim 11 (depends on 1) The method of claim 1, wherein the message comprises one or more of the following: information indicating a nature of the message as being a data message or a control message, information indicating the type of message within said nature as being a status message in the case of a control message, data acknowledging properly received data units or frames in the form of a certain sequence number, and information about the beginning and end of non-received data. ### Claim 12 (depends on 1) The method of claim 1, wherein said second extension indicator indicates the absence or presence of information about the beginning and end of non-received data. ### Claim 13 (depends on 11) The method of claim 11, wherein the first extension indicator is a single bit. ### Claim 14 (depends on 11) The method of claim 11, wherein the second extension indicator is a single bit. ### Claim 15 (depends on 11) The method of claim 11 wherein the first extension indicator is two bits. ### Claim 16 (depends on 11) The method of claim 11, wherein the data acknowledging properly received data units or frames is not directly followed in the message by the data regarding a non received or partially received data unit or frame. ### Claim 17 A transceiver for use in a cellular communications system, the transceiver being adapted to send traffic to and receiving traffic from a second transceiver in the system, comprising: a transmitter being adapted to send said traffic in data units, wherein each data unit is given an identifier and the data units are divided into segments, wherein said transceiver is adapted to send status information in data frames or data units about properly received, partially received or non-received data units to said second transceiver, wherein in the case of one or more non-received or partially received data units, the status information includes a message comprises data regarding a non-received or partially received data unit or frame, in the form of a certain sequence number, the transceiver transmits an indication, in the case of one or more partially received data units, of which parts of the partially received data units were non-received, the message includes a first extension indicator, and a second extension indicator indicating whether the data unit or units were non-received or partially received, and said first extension indicator indicates the absence or presence of another set comprising another of said first and second extension indicators and data regarding a partially or non-received data unit or frame in the form of the identifier of said data unit or frame. ### Claim 18 (depends on 17) The transceiver of claim 17, wherein the status information comprises information regarding whether or not a data unit was partially or non-received, wherein the information indicating whether or not a data unit was partially received or non-received is included as a flag in said data frames or data units. ### Claim 19 (depends on 17) The transceiver of claim 17, wherein the transceiver is adapted to send the status information indicating which parts of a data unit were not received in said data frames or data units by sending information which indicates a first and a last part of the non-received data unit. ### Claim 20 (depends on 17) The transceiver of claim 17, wherein the transceiver is adapted to send the status information indicating which parts of at least one partially received a data unit were not received comprises sending information indicating that a last segment of the data unit has not been received. ### Claim 21 (depends on 19) The transceiver of claim 19, wherein the transceiver is adapted to send the status information indicating which parts of the data unit were not received by sending a special predefined value to indicate that the last part of the data unit has not been received. ### Claim 22 (depends on 17) The transceiver of claim 17, wherein the transceiver is adapted to send the status information indicating which parts of a data unit were not received by sending, for the data unit, information which indicates the identifier of the data unit, as well as information about the beginning of the non-received data in said data unit, and the amount of non-received data. ### Claim 23 (depends on 17) The transceiver of claim 17, wherein the transceiver is in an E-UTRAN system. ### Claim 24 (depends on 23) The transceiver of claim 23, in which said data unit is a Radio Link Control, RLC, Protocol Data Unit, PDU, and said segments are RLC PDU segments. ### Claim 25 (depends on 23) The transceiver of claim 23, wherein the transceiver is an eNodeB of the E-UTRAN system. ### Claim 26 (depends on 23) The transceiver of claim 23, wherein the transceiver is a User Equipment of the E-UTRAN system. ### Claim 27 (depends on 17) The transceiver of claim 17, wherein the message comprises one or more of the following: information about the nature of the message, information about the type of message within said nature, data acknowledging properly received data units or frames in the form of a certain sequence number, and information about the beginning and end of non-received segments. ### Claim 28 (depends on 17) The transceiver of claim 17, wherein said second extension indicator indicates the absence or presence of information about the beginning and end of non-received data.