# US 8,543,080 B2 · Method of downloading data in a radio communications system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,543,080 B2 - Document ID: US8543080B2 - Status: Granted - Kind: B2 - Application number: 12/053,725 - Filed: 2008-03-24 - Published: 2008-07-24 - Granted: 2013-09-24 - Earliest claimed: 2002-02-07 - Assignees: Siemens Aktiengesellschaft - Applicants: Markus Dillinger; Jijun Luo; Eiman Bushra Mohyeldin - Inventors: Markus Dillinger; Jijun Luo; Eiman Bushra Mohyeldin - Web page: https://patentgrep.com/patent/US8543080B2 ## CPC - H04L 67/34: {involving the movement of software or configuration parameters (network booting or remote initial program loading [RIPL] G06F9/4416)} - G06F 11/1433: {during software upgrading} - H04L 69/329: in the application layer [OSI layer 7] - 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 72/30: Resource management for broadcast services - H04W 76/20: Manipulation of established connections - Y02D 30/70: in wireless communication networks - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE ## Abstract According to one aspect of the invention, in a radio communications system comprising at least one base station (BS1, BS2) provided with means for transmitting data via a communication link (BCCH; V), wherein the data is divided into a plurality of data packets and being transmitted via the communication link to at least one receiving station (UE). To reduce power consumption it is proposed that the downloading of the data packets is halted if it is determined that a data packet has not been received or a corrupted data packet has been received by the receiving station, the missing or corrupted data packet is retransmitted via the same or a different communication link at a later time. ## Claims ### Claim 1 A method for downloading data in a radio communications system, the system including at least one base station with means for transmitting data via a communication link, the method which comprises: dividing data into a plurality of data packets; transmitting the data packets via the communication link to at least one receiving station; halting a download of the data packets upon determining that a handover of the receiving station is due; subsequently resuming the download of the data packets via a new communication link after a conclusion of the handover; using a broadcast link to continue the download of data packets if a system load or a number of receiving stations exceed a predetermined threshold; and when the system load or the number of receiving stations lies below the predetermined threshold, using at least one dedicated channel to continue the download of data packets. ### Claim 2 (depends on 1) The method according to claim 1, which comprises marking each of a plurality of data packets assigned to a session with a session index. ### Claim 3 (depends on 2) The method according to claim 2, which comprises assigning a packet index to each of the data packets of a session, the packet index including the session index and an individual packet number. ### Claim 4 (depends on 1) The method according to claim 1, which comprises selectively halting and continuing the download of the data packets depending on a determined system load or a number of receiving stations communicating with the base station. ### Claim 5 (depends on 1) The method according to claim 1, which comprises signaling at least one of an end of session command and a number of further retransmissions of the sessions to the receiving station. ### Claim 6 (depends on 1) The method according to claim 1, wherein the data is software data for adapting or modifying software of the receiving station. ### Claim 7 (depends on 1) The method according to claim 1, which comprises using a broadcast channel with a reduced transmission power for transmitting the data. ### Claim 8 (depends on 1) The method according to claim 1, which comprises changing an affiliation of a user equipment, forming the receiving station, from a first base station to a second base station and selectively receiving a missing part of a session from the base stations repeatedly broadcasting a download stream. ### Claim 9 (depends on 1) The method according to claim 1, which comprises, in case a bearer service is changed or the download channel is changed from a broadcast channel to a dedicated channel, requesting the non-received or corrupted data packet with the receiving station by signaling a table of missing packets to the base station. ### Claim 10 (depends on 1) The method according to claim 1, which comprises, in a multi-download-service scenario with multiple cells each broadcasting a different session, selecting with the receiving station a session by way of a session index. ### Claim 11 (depends on 1) A radio communication system, comprising at least one base station and at least one receiving station each having means for carrying out the method according to claim 1. ### Claim 12 (depends on 1) A station of a radio communication system, comprising means for carrying out the method according to claim 1. ### Claim 13 (depends on 1) The method according to claim 1, which comprises halting the download of the data packets upon making a determination selected from the group consisting of determining that a data packet has not been received by the receiving station and determining that a corrupted data packet has been received by the receiving station. ### Claim 14 (depends on 1) The method according to claim 1, wherein the base station performs the step of dividing the data into the plurality of data packets. ### Claim 15 (depends on 1) The method according to claim 1, wherein: the receiving station transmits a packet number of a missing packet to the base station; and in response to receiving the packet number of the missing packet, the base station transmits the missing packet to the receiving station.