# US 10,321,468 B2 · NCT SCC activation control device and method, management method and base station device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,321,468 B2 - Document ID: US10321468B2 - Status: Granted - Kind: B2 - Application number: 14/912,314 - Filed: 2014-08-13 - Published: 2016-07-21 - Granted: 2019-06-11 - Earliest claimed: 2013-09-12 - Assignees: Sony Corporation - Applicants: Sony Corporation - Inventors: Xiaodong Xu; Yateng Hong; Ya Liu - Web page: https://patentgrep.com/patent/US10321468B2 ## CPC - H04W 72/542: using measured or perceived quality - H04L 5/001: {the frequencies being arranged in component carriers} - H04L 5/0048: {Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091)} - H04L 5/0051: {of dedicated pilots, i.e. pilots destined for a single user or terminal} - H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04L 5/006: {Quality of the received signal, e.g. BER, SNR, water filling} - H04L 5/0085: {when channel conditions change} - H04L 5/0098: {Signalling of the activation or deactivation of component carriers, subcarriers or frequency bands} - H04W 24/04: Arrangements for maintaining operational condition - H04W 72/54: based on quality criteria - H04W 76/18: Management of setup rejection or failure - H04L 5/0073: {Allocation arrangements that take into account other cell interferences} - 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 New Carrier Type (NCT) Secondary Component Carrier (SCC) activation control device and method, an management method and a base station device. The activation control device includes: a measuring module configured to perform radio link measurement to an SCC by measuring at least one of a demodulation reference signal DM-RS and a channel status indicator reference signal CSI-RS; and an activation control module configured to perform activation control to the SCC based on a measurement result. ## Claims ### Claim 1 A New Carrier Type (NCT) Secondary Component Carrier (SCC) activation control device, comprising: circuitry configured to perform, using fixed resources, a radio link measurement to an SCC by measuring a demodulation reference signal (DM-RS) and a channel status indicator reference signal (CSI-RS) to generate a measurement result, a position of the fixed resources being prestored in the activation control device; and perform activation control to the SCC based on the measurement result, wherein the radio link measurement to the SCC is performed based on configuration information of the DM-RS and CSI-RS, and the radio link measurement comprises a radio link management (RLM) measurement, wherein, when performing the RLM measurement to the SCC, the circuitry is further configured to measure a physical downlink shared channel (PDSCH) using the DM-RS, wherein the circuitry is further configured to, when measuring the PDSCH using the DM-RS, use a transmitting efficiency of the PDSCH as an assessment threshold to assess the PDSCH, and the transmitting efficiency is obtained based on a modulation and coding scheme MCS and a detected block error rate (BLER). ### Claim 2 (depends on 1) The activation control device according to claim 1, wherein the circuitry is further configured to deactivate the SCC if the RLM measurement determines that a radio link failure (RLF) occurs to the SCC. ### Claim 3 (depends on 2) The activation control device according to claim 2, wherein the circuitry is further configured to inform at least one of the RLF of the SCC and the deactivation of the SCC to a network side. ### Claim 4 (depends on 2) The activation control device according to claim 2, wherein the radio link measurement performed by the circuitry to the SCC comprises radio resource management (RRM) measurement, and the circuitry is further configured to perform corresponding activation control to the SCC based on an activation or deactivation instruction determined by a base station based on an RRM measurement result. ### Claim 5 (depends on 2) The activation control device according to claim 2, wherein when performing the RLM measurement to the SCC, the circuitry is further configured to measure an enhanced physical downlink control channel (ePDCCH) using the DM-RS. ### Claim 6 (depends on 5) The activation control device according to claim 5, wherein the circuitry is further configured to, when the SCC has a radio link problem (RLP) during the RLM measurement, detect a cause of the RLP and report the cause to a base station. ### Claim 7 (depends on 6) The activation control device according to claim 6, wherein the circuitry is further configured to perform radio link recovery (RLR) detection to the SCC, when performing the RLR detection, the circuitry is configured to perform a detection selected from the group consisting of RLR detection to a local frequency band of the SCC using the DM-RS, perform RLR detection to a full frequency band of the SCC using a Reduced cell-specific reference symbol (CRS), and a combination thereof, and when the RLR detection determines that the SCC cannot recover from the RLP, the circuitry determines that the SCC has the RLF. ### Claim 8 (depends on 5) The activation control device according to claim 5, wherein the circuitry is further configured to, when measuring the ePDCCH using the DM-RS, map a measurement result as a block error rate (BLER) of a given downlink control information DCI format and assess the ePDCCH based on the BLER. ### Claim 9 A New Carrier Type (NCT) Secondary Component Carrier (SCC) activation control device, comprising: circuitry configured to perform, using fixed resources, a radio link measurement to an SCC by measuring a demodulation reference signal (DM-RS) and a channel status indicator reference signal (CSI-RS) to generate a measurement result, a position of the fixed resources being prestored in the activation control device; and perform activation control to the SCC based on the measurement result; wherein the radio link measurement to the SCC is performed based on configuration information of the DM-RS and CSI-RS, and the radio link measurement comprises a radio link management (RLM) measurement, wherein, when performing the RLM measurement to the SCC, the circuitry is further configured to measure an enhanced physical downlink control channel (ePDCCH) using the DM-RS, wherein, when the SCC has a radio link problem (RLP) during the RLM measurement, the circuitry is further configured to detect a cause of the RLP and report the cause to a base station, and wherein the circuitry is further configured to determine the cause of the RLP by detecting a type of the RLP, the type of the RLP comprises local frequency band deep fading and excessive local frequency band interference, and the circuitry is configured to measure a full frequency band of the SCC using at least one of the CSI-RS and a Reduced CRS, and compare a measurement result of the full frequency band and a measurement result of a local frequency band of the ePDCCH to determine the type of the RLP. ### Claim 10 A New Carrier Type (NCT) Secondary Component Carrier (SCC) activation control method, comprising: performing, with circuitry and using fixed resources, a radio link measurement to an SCC by measuring a demodulation reference signal (DM-RS) and a channel status indicator reference signal (CSI-RS) to generate a measurement results, a position of the fixed resources being prestored in the circuitry; and performing, with the circuitry, activation control to the SCC based on the measurement result, wherein the radio link measurement to the SCC is performed based on configuration information of the DM-RS and CSI-RS, and the radio link measurement comprises a radio link management (RLM) measurement, wherein, when performing the RLM measurement to the SCC, the circuitry measures a physical downlink shared channel (PDSCH) using the DM-RS, wherein, when measuring the PDSCH using the DM-RS, the circuitry uses a transmitting efficiency of the PDSCH as an assessment threshold to assess the PDSCH, and the transmitting efficiency is obtained based on a modulation and coding scheme MCS and a detected block error rate (BLER). ### Claim 11 (depends on 10) The activation control method according to claim 10, wherein, when performing activation control to the SCC based on the measurement result, if the RLM measurement determines that a radio link failure (RLF) occurs to the SCC, deactivation of the SCC is performed. ### Claim 12 (depends on 11) The activation control method according to claim 11, wherein the radio link measurement performed to the SCC comprises radio resource management (RRM) measurement, and when performing the activation control to the SCC based on the measurement result, corresponding activation control of the SCC is performed based on an activation or deactivation instruction determined by a base station based on an RRM measurement result. ### Claim 13 (depends on 12) The activation control method according to claim 12, wherein when performing the RLM measurement to the SCC, an enhanced physical downlink control channel (ePDCCH) is measured using the DM-RS. ### Claim 14 (depends on 13) The activation control method according to claim 13, wherein when the SCC is detected to have a radio link problem (RLP) during the RLM measurement, a cause of the RLP is detected and the cause is reported to a base station.