# US 2021/0243679 A1 · Distribution Of System Information In A Wireless Access Telecommunications System > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0243679 A1 - Document ID: US20210243679A1 - Status: Published application - Kind: A1 - Application number: 17/237,965 - Filed: 2021-04-22 - Published: 2021-08-05 - Earliest claimed: 2011-11-08 - Assignees: Koninklijke KPN N.V.; Nederlandse Organisatie voor toegepast-natuurwetenschappelijk onderzoek TNO - Applicants: Koninklijke KPN N.V.; Nederlandse Organisatie voor Toegepast-Natuurwetenschappelijk Onderzoek TNO - Inventors: Haibin Zhang; Ljupco Jorguseski; Job Cornelis Oostveen; Jacob Cornelis Van der Wal - Web page: https://patentgrep.com/patent/US20210243679A1 ## CPC - H04W 48/10: using broadcasted information - H04W 48/08: Access restriction or access information delivery, e.g. discovery data delivery (signalling during connection H04W76/00) - H04W 36/0061: {of neighbour cell information} - H04W 48/14: using user query {or user detection} - H04W 84/045: {using private Base Stations, e.g. femto Base Stations, home Node B} - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract The invention relates to a wireless access telecommunications system comprising at least an SA-cell with which a terminal in an active mode is configured to have a data connection and an LA-cell on which the terminal in an idle mode is configured to camp. A method for the terminal to at least obtain LA-cell system information and SA-cell system information includes, when the terminal is in the active mode and an SA-cell radio interface of the terminal is enabled, the terminal receiving at least a part of the SA-cell system information for the terminal from the SA-cell via the SA-cell radio interface. The method further includes enabling an LA-cell radio interface of the terminal during one or more of a plurality of LA time periods and receiving at least a part of the LA-cell system information for the terminal from the LA-cell via the LA-cell radio interface. ## Claims ### Claim 1 In a wireless access network comprising at least a small area cell (SA-cell) optimized for data exchange with which a terminal in an active mode is configured to have an established data connection and a large area cell (LA-cell) on which the terminal in an idle mode is configured to camp, a method for the terminal to obtain at least LA-cell system information associated with the LA-cell and/or the network it operates in and SA-cell system information associated with the SA-cell and/or the network it operates in, the terminal comprising an SA-cell radio interface and an LA-cell radio interface, the method comprising: when the terminal is in the idle mode and an LA-cell radio interface of the terminal is enabled, the terminal receiving at least a first part of the LA-cell system information and at least a first part of the SA-cell system information from the LA-cell via the LA-cell radio interface. ### Claim 2 (depends on 1) The method according to claim 1, further comprising: when the terminal is in the active mode and an SA-cell radio interface of the terminal is enabled, the terminal receiving at least a second part of the SA-cell system information. ### Claim 3 (depends on 1) The method according to claim 1, further comprising: when the terminal is in the active mode and the SA-cell radio interface of the terminal is enabled, the terminal receiving at least a second part of the LA-cell system information from the SA-cell via the SA-cell radio interface. ### Claim 4 (depends on 1) The method according to claim 1, further comprising: when the terminal is in the active mode and an SA-cell radio interface is enabled, the terminal enabling the LA-cell radio interface during one or more time periods and receiving at least a second part of the LA-cell system information from the LA-cell via the LA-cell radio interface. ### Claim 5 (depends on 4) The method according to claim 4, wherein at least one of the one or more time periods occur upon the terminal in the active mode receiving a trigger to enable the LA-cell radio interface. ### Claim 6 (depends on 5) The method according to claim 5, wherein the trigger comprises at least one of a trigger provided by the LA-cell or by a network control entity in the wireless access network to the terminal via the SA-cell, the terminal performing a handover of one SA cell to another SA cell in the wireless access network, and the expiry of a timer in the terminal. ### Claim 7 (depends on 1) The method according to claim 1, further comprising: when the terminal is in the idle mode and the LA-cell radio interface of the terminal is enabled, the terminal receiving at least a part of SA-cell system information regarding at least one of one or more other SA-cells in the wireless access network from the LA-cell via the LA-cell radio interface. ### Claim 8 (depends on 7) The method according to claim 7, wherein the at least one of the one or more other SA-cells includes one or more other SA-cells that are active and/or in the process of being activated. ### Claim 9 (depends on 1) The method according to claim 1, further comprising the terminal receiving, from the LA-cell via the LA-cell radio interface, an activation status of at least one SA-cell for which the SA-cell system information is received. ### Claim 10 (depends on 1) The method according to claim 1, further comprising disabling the SA-cell radio interface when the LA-cell radio interface is enabled and disabling the LA-cell radio interface when the SA-cell radio interface is enabled. ### Claim 11 (depends on 1) A terminal comprising means for performing the steps of claim 1. ### Claim 12 (depends on 1) A non-transitory computer readable medium comprising software code portions configured, when executed by a processor, for performing the steps of claim 1. ### Claim 13 (depends on 1) An LA-cell configured for use in the method according to claim 1, the LA-cell being configured at least for: obtaining the at least the first part of the SA-cell system information from the SA-cell and/or from a network management entity of the wireless access telecommunications network; and transmitting the at least the first part of the SA-cell system information and the at least the first part of the LA-cell system information. ### Claim 14 (depends on 13) The LA-cell according to claim 13, wherein the at least the first part of the LA-cell system information is transmitted in a predetermined pattern, preferably periodically. ### Claim 15 (depends on 1) An SA-cell configured for use in the method according to claim 1, the SA-cell being configured at least for: providing the at least the first part of the SA-cell system information to the LA-cell for transmission for the terminal.