# US 7,609,715 B2 · Non-transparent data transmission in a mobile network > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 7,609,715 B2 - Document ID: US7609715B2 - Status: Granted - Kind: B2 - Application number: 10/225,434 - Filed: 2002-08-21 - Published: 2003-02-27 - Granted: 2009-10-27 - Earliest claimed: 2001-08-23 - Assignees: Nokia Corporation - Inventors: Jukka Ala-Vannesluoma - Web page: https://patentgrep.com/patent/US7609715B2 ## CPC - H04W 28/06: Optimizing {the usage of the radio link}, e.g. header compression, information sizing {, discarding information (system modifying transmission characteristic according to link quality by modifying frame length H04L1/0007; dynamic adaptation of the packet size for flow control or congestion control H04L47/365)} - H04L 9/40: Network security protocols - H04W 28/14: using intermediate storage - H04W 4/18: Information format or content conversion, e.g. adaptation by the network of the transmitted or received information for the purpose of wireless delivery to users or terminals - H04W 8/22: Processing or transfer of terminal data, e.g. status or physical capabilities - H04W 8/245: {from a network towards a terminal} - H04W 48/08: Access restriction or access information delivery, e.g. discovery data delivery (signalling during connection H04W76/00) - H04W 80/00: Wireless network protocols or protocol adaptations to wireless operation - H04W 80/02: Data link layer protocols - 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 method in a mobile communication system, comprising a mobile station and a base transceiver station, which are both arranged to use radio link protocol (RLP) and link protocol (L2R) in non-transparent data transmission. At least a first and a second frame of fixed lengths are defined for the radio link protocol for data transmission, the frames being of different lengths. The link protocol is arranged to transmit status information defining data transmission. In non-transparent data transmission between the mobile station and the base transceiver station, remapping during the data transmission between said frames is arranged to be initiated. The initiation of the remapping is arranged to be indicated to the link protocol layer (L2R). Current status information on the link protocol (L2R) is arranged to be transmitted in the radio link protocol (RLP) frame transmitted first after said remapping. ## Claims ### Claim 1 A method comprising: establishing data transmission in a mobile communication system, comprising functionalities for a radio link protocol and a link protocol for realizing said data transmission, for which radio link protocol at least two different frames of fixed lengths are defined, and which link protocol is configured to transmit status information defining data transmission; initiating a Remap during data transmission on a radio link protocol functionality between said frames; indicating the initiation of said Remap to a link protocol functionality; transmitting radio link protocol frames being the object of the Remap from a transmission buffer of the radio link protocol functionality to the link protocol functionality in the opposite order compared with storing said frames in the transmission buffer; storing the data in said frames in a remap buffer of the link protocol functionality, starting from a last free memory location of the remap buffer; and transmitting the current status information in accordance with the link protocol in the frame of the radio link protocol transmitted first after said Remap. ### Claim 2 (depends on 1) A method according to claim 1, wherein the initiation of said Remap is indicated to the link protocol functionality by means of the first frame transmitted from said remap buffer. ### Claim 3 (depends on 1) A method according to claim 1, wherein the data in said remap buffer is arranged into radio link protocol frames used after said Remap, and the data transmission is continued from the transmission buffer in accordance with the link protocol functionality after the data of said remap buffer has been transmitted. ### Claim 4 A mobile communication system comprising: a mobile station comprising functionalities for a radio link protocol and a link protocol for realizing data transmission; and a base transceiver station comprising functionalities for a radio link protocol and a link protocol for realizing said data transmission, there being at least two different frames of fixed lengths defined for the radio link protocol, and the radio link protocol being configured to transmit status information defining data transmission, wherein a Remap between said frames is configured to be initiated on either of said functionalities for the radio link protocol during the data transmission between the mobile station and base transceiver station; the initiation of said Remap is configured to be indicated to a link protocol layer functionality; the radio link protocol frames being the object of the Remap are configured to be transmitted from a transmission buffer of a radio link protocol functionality to the link protocol functionality of the mobile station in the opposite order compared with storing said frames in the transmission buffer; the data in said frames is configured to be stored in a remap buffer on the link protocol functionality, starting from a last free memory location of the remap buffer; and current status information in accordance with the link protocol is configured to be transmitted in the radio link protocol frame sent first after said Remap. ### Claim 5 (depends on 4) A mobile communication system according to claim 4, wherein the initiation of said Remap is configured to be indicated to the link protocol functionality by means of the frame transmitted first from said remap buffer. ### Claim 6 (depends on 4) A mobile communication system according to claim 4, wherein the data in said remap buffer is configured to be adapted to radio link protocol frames used after said Remap; and the data transmission is configured to be continued from the transmission buffer of the radio link protocol functionality after the data of the remap buffer has been transmitted. ### Claim 7 An apparatus comprising: functionalities for a radio link protocol and a link protocol for realizing data transmission in a mobile communication system, in which radio link protocol at least two frames of fixed lengths are defined for data transmission, and which link protocol is configured to transmit status information defining data transmission, said apparatus is configured to initiate Remap during the data transmission in accordance with the radio link protocol between said frames; the initiation of said Remap is configured to be indicated to a link protocol functionality of said apparatus; said radio link protocol frames are configured to be transmitted from a transmission buffer of a radio link protocol functionality to the link protocol functionality in the opposite order compared with storing said frames in the transmission buffer; and data in said frames is configured to be stored in a remap buffer of the link protocol functionality, starting from a last free memory location of the remap buffer; and current status information in accordance with the link protocol is configured to be transmitted in the radio link protocol frame transmitted first from said apparatus after said Remap. ### Claim 8 A method comprising: establishing data transmission in a mobile communication system, comprising functionalities for a radio link protocol and a link protocol for realizing said data transmission, for which radio link protocol at least two different frames of fixed lengths are defined; initiating a Remap during data transmission on a radio link protocol functionality between said frames; transmitting the radio link protocol frames being the object of the Remap from a transmission buffer to the link protocol functionality; unpacking the data contained in said frames into a remap buffer of the link protocol functionality; and transmitting said radio protocol layer frames from a transmission buffer of the radio link protocol functionality to the link protocol functionality in the opposite order compared with storing said frames in the transmission buffer. ### Claim 9 A mobile communication system comprising: a mobile station comprising functionalities for a radio link protocol and a link protocol for realizing data transmission; and a base transceiver station comprising functionalities for a radio link protocol and a link protocol for realizing data transmission; there being at least two different frames of fixed lengths defined for the radio link protocol, wherein: a Remap between said frames is configured to be initiated on either of said functionalities for the radio link protocol layer during the data transmission between the mobile station and base transceiver station; the radio link protocol frames being the object of said Remap are configured to be transmitted from a transmission buffer of a radio link protocol functionality to the link protocol functionality of the mobile station; the data in said frames is configured to be unpacked into a remap buffer of the link protocol functionality of the mobile station; and said radio link protocol frames are configured to be transmitted from the transmission buffer of the radio link protocol functionality to the link protocol functionality of the mobile station in the opposite order compared with storing said frames in the transmission buffer. ### Claim 10 (depends on 9) A mobile communication system according to claim 9, wherein data in said frames is configured to be stored in the remap buffer of the link protocol functionality, starting from the last free memory location of the remap buffer. ### Claim 11 (depends on 9) A mobile communication system according to claim 9, wherein the initiation of said Remap is configured to be indicated to the link protocol functionality by means of the frame transmitted first from said transmission buffer. ### Claim 12 (depends on 9) A mobile communication system according to claim 9, wherein the data in said remap buffer is configured to be adapted to radio link protocol frames used after said Remap; and the data transmission is configured to be continued from the transmission buffer of the radio link protocol functionality after the data of the remap buffer has been transmitted. ### Claim 13 An apparatus comprising: functionalities for a radio link protocol and a link protocol for realizing data transmission in a mobile communication system in which radio link protocol at least two frames of fixed lengths are defined for data transmission, said apparatus is configured to initiate a Remap during the data transmission in accordance with the radio link protocol between said frames; the radio link protocol frames being the object of said Remap are configured to be transmitted from a transmission buffer of a radio link protocol functionality to a link protocol functionality, the data in said frames is configured to be unpacked into a remap buffer of the link protocol functionality; and said apparatus is configured to transmit said radio link protocol frames from the transmission buffer of the radio link protocol layer to the link protocol functionality in the opposite order compared with storing said frames in the transmission buffer. ### Claim 14 (depends on 13) An apparatus according to claim 13, wherein said apparatus is configured to store the data in said frames in the remap buffer of the link protocol functionality, starting from a last free memory location of the remap buffer. ### Claim 15 (depends on 13) An apparatus according to claim 13, wherein: said apparatus is configured to adapt the data in said remap buffer to radio link protocol frames used after said Remap; and the data transmission is configured to be continued from the transmission buffer of the radio link protocol functionality after the data of the remap buffer has been transmitted.