# US 2018/0027461 A1 · Deactivation Method and Apparatus for a Secondary Cell and Communications System > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0027461 A1 - Document ID: US20180027461A1 - Status: Published application - Kind: A1 - Application number: 15/722,692 - Filed: 2017-10-02 - Published: 2018-01-25 - Earliest claimed: 2015-04-07 - Assignees: Fujitsu Limited - Applicants: Fujitsu Limited - Inventors: Meiyi JIA; Haibo XU; Hua ZHOU; Lianhai WU - Web page: https://patentgrep.com/patent/US20180027461A1 ## CPC - H04W 36/04: Reselecting a cell layer in multi-layered cells - H04L 5/001: {the frequencies being arranged in component carriers} - H04L 5/0098: {Signalling of the activation or deactivation of component carriers, subcarriers or frequency bands} - H04W 72/04: Wireless resource allocation - H04W 72/20: Control channels or signalling for resource management - H04W 76/36: for reassigning the resources associated with the released connections - H04W 72/0453: Resources in frequency domain, e.g. a carrier in FDMA - H04W 84/042: {Public Land Mobile systems, e.g. cellular systems} - Y02D 30/70: in wireless communication networks - 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) - 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 A deactivation method and apparatus for a secondary cell and a communications system. The deactivation method includes: restarting a deactivation timer associated with a first SCell carrying a PUCCH, in a case where a deactivation timer is restarted or a channel quality indicator report is transmitted in any second SCell in a secondary PUCCH cell group. Hence, a case will not occur where understanding of an activation state of a secondary cell by a UE and a base station is inconsistent due to an UE autonomous deactivation mechanism. ## Claims ### Claim 1 A deactivation apparatus for a secondary cell (SCell), configured in a user equipment (UE), the UE being configured with a first SCell carrying a physical uplink control channel (PUCCH) and a second SCell carrying no PUCCH; wherein the deactivation apparatus comprises: a configuring unit configured to configure the first SCell carrying a PUCCH to be deactivated by a deactivation media access control (MAC) control element (CE); and the first SCell carrying the PUCCH is configured as not operating a deactivation timer, or a value of a deactivation timer of the first SCell is configured as being greater than a value of a deactivation timer of the second SCell. ### Claim 2 (depends on 1) The deactivation apparatus according to claim 1, wherein the value of the deactivation timer of the first SCell is configured as being infinite. ### Claim 3 A deactivation apparatus for a secondary cell (SCell), configured in a user equipment (UE), the UE being configured with a first SCell carrying a physical uplink control channel (PUCCH) and a second SCell carrying no PUCCH, the first SCell and one or more second SCells whose uplink control information is transmitted via the PUCCH constituting a secondary PUCCH cell group; wherein the deactivation apparatus comprises: a restarting unit configured to restart a deactivation timer associated with the first SCell carrying the PUCCH, in a case where a deactivation timer is restarted in any second SCell or a channel quality indicator report is transmitted in any second SCell in the secondary PUCCH cell group. ### Claim 4 (depends on 3) The deactivation apparatus according to claim 3, wherein the deactivation apparatus further comprises: a determining unit configured to determine whether a physical downlink control channel (PDCCH) indicating an uplink grant or downlink assignment is received in the any second SCell, or whether a PDCCH scheduling the any second SCell and indicating an uplink grant or downlink assignment is received in another serving cell. ### Claim 5 (depends on 4) The deactivation apparatus according to claim 4, wherein the restarting unit is further configured to restart a deactivation timer of the any second SCell. ### Claim 6 (depends on 4) The deactivation apparatus according to claim 4, wherein the determining unit is further configured to determine whether a channel quality indicator report is transmitted in the any second SCell. ### Claim 7 A deactivation apparatus for an SCell, configured in a UE, the UE being configured with a first SCell carrying a PUCCH and a second SCell carrying no PUCCH, the first SCell and one or more second SCells whose uplink control information is transmitted via the PUCCH of the first SCell constituting a secondary PUCCH cell group; the UE being further configured with a primary cell (PCell) carrying a PUCCH, the PCell and one or more second SCells whose uplink control information is transmitted via the PUCCH of the PCell constituting a primary PUCCH cell group; wherein the deactivation apparatus comprises: a configuring unit configured to configure the secondary PUCCH cell group with a secondary cell group deactivation timer; and a restarting unit configured to restart the secondary cell group deactivation timer in a case where any SCell of the secondary PUCCH cell group satisfies a timer restart condition. ### Claim 8 (depends on 7) The deactivation apparatus according to claim 7, wherein the deactivation apparatus further comprises: a determining unit configured to determine whether a PDCCH indicating an uplink grant or downlink assignment is received in the any SCell of the secondary PUCCH cell group, or whether a PDCCH scheduling the any SCell and indicating an uplink grant or downlink assignment is received in another serving cell. ### Claim 9 (depends on 7) The deactivation apparatus according to claim 7, wherein the configuring unit is further configured to configure the primary PUCCH cell group with a primary cell group deactivation timer; and the restarting unit is further configured to restart the primary cell group deactivation timer in a case where any SCell of the primary PUCCH cell group satisfies a timer restart condition. ### Claim 10 (depends on 9) The deactivation apparatus according to claim 9, wherein the deactivation apparatus further comprises: a determining unit configured to determine whether a PDCCH indicating an uplink grant or downlink assignment is received in the any SCell of the primary PUCCH cell group, or whether a PDCCH scheduling the any SCell and indicating an uplink grant or downlink assignment is received in another serving cell. ### Claim 11 A communications system, comprising: a UE configured with a first SCell carrying a PUCCH and a second SCell carrying no PUCCH; wherein the UE is configured to configure the first SCell carrying a PUCCH to be deactivated by a deactivation media access control (MAC) control element (CE); and the first SCell carrying a PUCCH is configured as not operating a deactivation timer, or a value of a deactivation timer of the first SCell is configured as being greater than a value of a deactivation timer of the second SCell.