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    • 专利摘要:
      An apparatus and a method of activating and controlling the SCC NCT, a management method and a base station apparatus are described. The activation and control device comprises: a measurement module, configured to carry out radio link measurement of an SCC using at least one of the measurement reference signal (DM-RS) and an indication reference signal channel status (CSI-RS); and an activation and control module, configured to perform activation and control of the SCC according to a measurement result. The present invention describes, in accordance with an innovative feature of the NCT and a change in the network structure, reference signals required in the measurement of the NCT SCC, and can precisely and appropriately measure an NCT SCC.
    公开号:BR112016004884A2
    申请号:R112016004884-9
    申请日:2014-08-13
    公开日:2020-09-01
    发明作者:Xiaodong Xu；Yateng HONG；Ya Liu
    申请人:Sony Corporation；
    IPC主号:
    专利说明:

    [001] [001] The present invention relates to the field of communication and, in particular, to a device and method of controlling the activation of the Secondary Component Carrier (SCC) of the New Type of Carrier (NCT), to an activation management method and a base station device. Fundamentals of Technique
    [002] [002] Small Cell Intensification (SCE), which is the focus for Rel-12 standardization, refers to many aspects, such as NCT of the physical layer. NCT is a key support technique for an SCE physical layer, and was first proposed in intensifying Rel-11 carrier aggregation. Therefore, the scenario initially discussed for NCT is SCC, which serves User Equipment (UE) through carrier aggregation. NCT WI in Rel-12 is approved in RAN # 57 meeting and WID is updated in RAN # 58 meeting. The NCT standardization work mainly includes two stages as follows.
    [003] [003] Some NCT characteristics are defined in RP-122028, including mainly: the NCT design has reduced traditional control signaling and common reference signals transmitted on carriers, thereby reducing the interference and transmission load of the transmission channel. control and improving the throughput capacity and the efficiency of using the frequency band of the user system. The exposed feature of NCT may be better support for edge users in homogeneous networks and areas of cell range expansion of heterogeneous networks. In this regard, NCT can support innovative scenarios, for example, NCT can allow a BS (base station) to disable current carriers
    [004] [004] Stage 1: Standardization is performed in NS-NCT scenarios. NCT coexists with backward compatible carriers through carrier aggregation. The exposed scenario can be further classified into two different scenarios of synchronized and non-synchronized carriers.
    [005] [005] At the same time, this internship also includes studies on S-NCT, and assesses its main application scenarios and potential advantages to determine whether it is necessary to study S-NCT scenarios.
    [006] [006] Stage 2: Depending on the results of the evaluation in Stage 1, if it is necessary to further study S-NCT, standardization needs to be performed for S-NCT scenarios in relation to the results of the SI SCE study and the determined optimization principles.
    [007] [007] Currently, NS-NCT is the main scenario discussed for standardization. The NS-NCT definition was approved in RAN # 57 meeting, that is, when a target frequency resource block does not support operations
    [008] [008] Furthermore, consensus was reached on the motivation for the introduction of NCT in carrier aggregation scenarios and, RAN1 # 66bis meeting, which mainly includes the following three items: (1) improving the efficiency of the frequency spectrum; (2) support the implementation of heterogeneous networks; and (3) facilitate energy savings.
    [009] [009] To achieve the three objectives exposed, during the NCT design, some common control channels / signals, such as CRSs, must be removed as much as possible. However, CRSs are crucially important for some mechanisms, such as UE time frequency synchronization, RRM measurement and cell transfer etc., so how to perform these mechanisms in the NCT scenario is a major task for standardization. Main functions of CRSs are listed as follows in LTE Rel-8/9 version: (1) demodulate downlink data (TMs1-6), control channels and PBCH channels; (2) to calculate CSI feedback (TMs1-8); (3) to perform synchronization in the UE's time frequency domain; (4) perform mobility measurement (RSRP / RSRQ) in RRC-IDLE and RRC-CONNECTED states; and (5) perform RLM measurement in the RRC-CONNECTED state.
    [0010] [0010] A pre-coded transmission mode not based on TM9 codebook is introduced in LTE version Rel-11. TM9 supports 8-layer transmission at maximum capacity, increasing transmission efficiency. TM9 performs data demodulation using signals
    [0011] [0011] Based on current discussion results, reference signals usable in NCT include the following types: (1) PSS / SSS
    [0012] [0012] Primary synchronization signals (PSSs) and secondary synchronization signals (SSSs) are mainly used to perform initial symbol synchronization and frame synchronization. For NCT synchronized carrier scenarios, since a cell's synchronization information is obtained through a traditional carrier, PSSs / SSSs can be removed in NCT to further improve the efficiency of NCT resource utilization. However, some proposals show that the gains obtained by removing PSS / SSS are not obvious, greater influence will be brought about in standardization and the complexity of UE will be increased. Therefore, currently, there is no consensus on the removal of PSSs / SSSs in NCT synchronized carrier scenarios, and further discussion is still needed. (2) DM-RS
    [0013] [0013] Unlike cell-specific CRSs, DM-RSs are UE-specific reference signals, transmitted in certain PRBs and used for demodulation of UE data channels. DM-RSs from different EU can occupy the same RE distinguished by CDM. In addition, resource allocation for DM-RSs is finalized before pre-coding, so DM-RSs include pre-coding gains. There is a Collision problem between DM-RSs and PSSs / SSSs in NCT. According to current 3GPP discussions, displacement of PSS / SSS and drilling of DM-RS are primarily considered to improve the performance of shared channels on physical downlink (PDSCHs), to facilitate demodulation of
    [0014] [0014] As DM-RSs in version R10, CSI-RSs are introduced to support configurations of 8 antennas in LTE-A, to estimate channel conditions of PDSCHs and to perform beam formation. CSI-RSs are distributed at regular intervals in the frequency domain, but are sparsely distributed in the time domain. Similarly, CSI-RSs that occupy the same RE are distinguished by CDM. Furthermore, CSI-RSs are UE-specific reference signals and configured by BS before use. (4) Reduced CRS
    [0015] [0015] Since there is no transmission of CRSs and NCT ePDSCCH are demodulated based DM-RSs, the NCT transmission mode does not support TMs1-8. Therefore, to replace CRS in NCT, problems to be solved include synchronization in the temporal frequency domain, measurement of radio resource management (RRM) and measurement of interference under TM9 mode. To solve the exposed problems (including synchronization and RRM measurement), the current result of the discussion is to increase Reduced CRSs (Reduced Cell specific reference signals). Reduced CRSs are still based on CRSs, use port0 ports and Rel-8 strings, and are transmitted once every 5 ms. Reduced CRSs are also called Traditional CRS (TRS), Extended Sync Signal (eSS) etc.
    [0016] [0016] Reduced CRS solutions are still under discussion RAN4, as simulations have found that performance loss is present in the relatively small carrier bandwidth scenarios. Therefore, if the conclusion of RAN4 is to increase the density of the reference signal,
    [0017] [0017] Much content has not yet been determined for CRS Reduced. For example, if subframe offset needs to be entered at the position of the Reduced CRS subframe Obviously, the introduction of subframe displacement can potentially alleviate interference problems, but it will increase complexity. In this regard, different companies disagree whether specific cell frequency shift should be maintained for Reduced CRS. All things considered, the specific Reduced CRS content needs improvement.
    [0018] [0018] A carrier aggregation mechanism is introduced in the LTE Rel-10 version to satisfy the requirement that the transmission bandwidth must reach 100 MHz in IMT-A. The carrier aggregation mechanism is mainly performed by measuring RRM. For carrier aggregation, the purpose of RRM measurement is not just to perform mobility management for EU, but to activate and deactivate component carriers.
    [0019] [0019] RRM considers QoS parameters (QCI / GBR / AMBR) in a comprehensive manner, including the previous conditions, such as wireless charge configuration, the terminal's reception capacity and the carrier's charge condition, and sets up a carrier set for each EU. The UE then measures the cells in their carrier set based on multiple measurement events defined by the standards, and reports the measurement result to the network side, which performs activation and deactivation in relation to SCC based on the measurement result . Since the UE can be configured with multiple component carriers (referred to as CCs), the UE must maintain communication with one PCell and a maximum of four SCells. The UE no longer performs cell measurement for transfer, but selects the most suitable cell or cells to provide services based on the current radio environment. The UE can measure multiple cells using different events of
    [0020] [0020] At the same time, activation / deactivation of component carriers (CCs) can be controlled from the network side. The network now issues an UE enable / disable MAC control unit to enable / disable SCCs, but the MAC layer only reports problems with random access failure and PCell retransmission failure to a higher level. Reporting of the channel quality indicator (CQI) is directed to a SCell activated only, and the radio link condition of a non-activated SCell cannot be provided. However, RRM measurement can be performed for activated or not activated secondary downlink component carriers (SCCs DL). The result of the RRM measurement can reflect the current radio link quality of a SCC DL, and it helps the network side to decide whether the corresponding SCell is suitable to provide services to the UE.
    [0021] [0021] In an LTE / LTE-A system, a radio link management (RLM) mechanism is primarily used to monitor the radio link of a primary PCC component carrier to determine whether the state of the radio link is normal , ensuring the reliability of the radio communication system. When activating / deactivating DL SCCs in Rel-10/11, the RLM mechanism is not applied due to the following reasons: (1) BS is able to detect whether the quality of the radio link
    [0022] [0022] In Rel-10/11, the activation / deactivation of SCell is controlled by eNodeB. Specifically, a traditional SCC activation / deactivation process based on RRM measurement is as follows:
    [0023] [0023] At the same time, the network side can configure a timer for the UE side. When the UE does not receive PDCCH data and messages, SCCs can be automatically disabled. The steps are as follows:
    [0024] [0024] However, in NCT scenarios, PSS / SSS and physical broadcast channels (PBCHs) can be removed, which will substantially affect the current carrier aggregation mechanisms. For example, once the PSS / SSS and PBCHs are removed, detecting CCs and acquiring the MIB from the cells will become difficult. For synchronized NCT, the presence of NCT carriers and system information (such as PCI, SFN and bandwidth) can be indicated by traditional carriers. Furthermore, system bandwidth information may not be crucially important for measuring RRM (since the UE can only measure several RBs at the central frequency). Furthermore, since NCT is used as SCC only, configuration information from physical hybrid ARQ indicator channels (PHICHs) is unnecessary.
    [0025] [0025] As shown by the description described, in NCT scenarios, the configuration of reference signals is substantially changed, so that traditional SCC activation control solutions are not suitable for NCT scenarios. Currently, there is no effective solution on how to perform SCC activation control in NCT scenarios. Summary of the Invention
    [0026] [0026] Regarding the problem in which the previous techniques do not
    [0027] [0027] In accordance with an aspect of the present invention, an SCC NCT activation control device is provided. The device comprises: a measurement module configured to perform link measurement by radio in an SCC by measuring at least one of a DM-RS demodulation reference signal and a CSI-RS channel status indicator signal; and an activation control module configured to perform activation control in the SCC based on a measurement result.
    [0028] [0028] In accordance with another aspect of the present invention, a method of controlling SCC NCT activation is provided. The method comprises: performing link measurement by radio in a SCC by measuring at least one of the DM-RS demodulation reference signal and a reference signal of the CSI-RS channel status indicator; and perform activation control in relation to the SCC based on the measurement result.
    [0029] [0029] In accordance with another aspect of the present invention, a base station device is provided and is configured to manage a carrier set of user equipment that contains an NCT SCC. The base station device comprises: a communication module configured to receive, from the user equipment, a result of the radio link measurement performed in relation to an SCC by using at least one of a demodulation reference signal DM-RS and a reference signal from the CSI-RS channel status indicator; and a management module configured to manage an SCC activation state contained in the carrier set of the user equipment based on a
    [0030] [0030] In accordance with another aspect of the present invention, an SCC NCT management method is provided and configured to manage a carrier set of user equipment that contains an NCT SCC. The management method comprises: receiving, from the user's equipment, a result of the radio link measurement performed in relation to a SCC by using at least one of the DM-RS demodulation reference signal and a reference signal the CSI-RS channel status indicator; and manage an SCC activation state contained in the user equipment carrier set based on a measurement result.
    [0031] [0031] In accordance with the innovative characteristics of NCT and changes in the network structure, the present invention proposes reference signals used in the measurement of SCC NCT, which can precisely and reasonably measure SCC NCTs and facilitate the realization of control / management of activation of carriers through the RLM and RRM mechanisms. Brief Description of Drawings
    [0032] [0032] To clearly describe the technical solutions of the modalities of this invention or the prior art, the drawings required for the modalities of this invention are introduced in summary. Obviously, the drawings described below show only a few embodiments of this invention, and other drawings can be obtained based on them by those skilled in the art without any inventive work.
    [0033] [0033] Figure 1 is a block diagram of the SCC NCT activation control device according to an embodiment of this invention; figure 2 is a flowchart showing the specific realization process of the SCC NCT activation control method according to an embodiment of this invention;
    [0034] [0034] The exemplary embodiments of this invention will be described below in relation to the drawings. To make it clear and brief, not all characteristics of real modalities are described in the description. However, it is understood that several modal-specific decisions must be made in the development of any such modality in order to achieve the specific targets of development personnel, for example, necessary restriction conditions related to the system and services can be satisfied, and such conditions restrictions may differ, depending on different modalities. It should also be understood that, although development can be complex and time-consuming, such work is a routine task for those skilled in the art who benefit from the description of this application.
    [0035] [0035] Furthermore, it should be noted that, in order to avoid obscuring this invention due to unnecessary details, only the device structures and / or processing steps closely related to the solutions of this invention are shown in the drawings, at the same time that other details not closely related to them are omitted.
    [0036] [0036] One embodiment of this invention provides an SCC NCT activation control device.
    [0037] [0037] Figure 1 shows the structure of the
    [0038] [0038] As shown in figure 1, the SCC NCT activation control device according to one embodiment of this invention comprises: a measurement module 11 configured to perform link measurement by radio in an SCC by measuring at least one of a DM-RS demodulation reference signal and a CSI-RS channel status indicator reference signal; and an activation control module 12 configured to perform activation control in the SCC based on a measurement result.
    [0039] [0039] Therefore, this invention defined the reference signals used in the control of SCC activation. As a known sequence, a reference signal is usually used in signal demodulation and measurement of channel quality. A CSI-RS is introduced as a reference signal for measuring the quality of the channel in Rel-10. Since a CSI-RS is UE specific, it cannot be configured before the UE is aggregated with it, and the corresponding channel quality information cannot be obtained. Therefore, if a CSI-RS is required to perform radio link measurement at an SCC, a base station needs to configure a CSI-RS for UE in advance. For example, during the configuration of a CSI-RS, the BS needs to communicate with the UE to inform a transmission position of the CSI-RS (that is, the transmission position can be understood as the configuration information of the CSI-RS) to the UE, so that measurement can be performed using the CSI-RS. On the other hand, a DM-RS is initially used as a reference signal for signal demodulation and is also UE specific. If a DM-RS needs to be used for SCC activation, BS needs to inform the position of the data resource block that transmits the DM-RS (the position can be understood as the DM-RS configuration information) to the UE , so that measurement can be
    [0040] [0040] In addition to the exposed method of performing the measurement based on the configuration information received from a CSI-RS / DM-RS, according to another modality, fixed resources can be reserved in a certain interval for measuring the SCC. The BS can transmit known sequences (a reference signal is substantially a known sequence) in these resources, and the UE knows the position of the resource block to be measured (the configuration information) of the NCT carrier in advance, so it is unnecessary to transmit confirmation information between BS and the terminal in advance. The purpose of measurement can be achieved by receiving, by the UE, known sequences transmitted in the fixed resources.
    [0041] [0041] All things considered, the measurement module 11 is configured to perform link measurement by radio in the SCC using at least one of the DM-RS and CSI-RS based on the DM-RS and / or CSI configuration information -LOL.
    [0042] [0042] In one embodiment, the radio link measurement performed by measurement module 11 on the SCC includes RLM measurement, and the activation control module 12 is configured to disable the SCC when the RLM measurement determines that a radio link (RLF) occurs at the SCC.
    [0043] [0043] Furthermore, the activation control device according to one embodiment of this invention further comprises: a module
    [0044] [0044] In one embodiment, in addition to the RLM measurement in relation to the SCC, the radio link measurement performed by the measurement module 11 in relation to the SCC includes RRM measurement, and the activation control module 12 is configured to perform corresponding activation control in the SCC based on an activation / deactivation instruction determined by a base station based on an RRM measurement result. That is, after the RRM measurement, the BS will determine which activation / deactivation of the measured SCC is performed based on a result of the RRM measurement and generate a corresponding instruction. The activation control module 12 will activate / deactivate the SCC according to the instruction generated by the BS. A CSI-RS can be used when performing the RRM measurement. In an alternative embodiment, the RRM measurement mechanism can be performed using a Reduced CRS. Since the port port of a CRS in Rel-8 is still used, changes in standards are relatively small.
    [0045] [0045] In another mode, during the measurement of the RLM in the SCC, the measurement module 11 is configured to measure an intensified downlink control channel (ePDCCH) and / or a channel
    [0046] [0046] At this time, the measurement module 11 is additionally configured to, when a radio link problem (RLP) of the SCC has been detected during the RLM measurement, detect a cause of the RLP and report the cause to the BS, to assist the UE in the recovery of the RLP by BS. During RLP recovery, detection of radio link recovery (RLR) can be performed.
    [0047] [0047] In fact, the solution of this invention (such as the RLM mechanism of this invention) includes the following states: a normal state, detection of an RLP / recovery of an RLP, and detection of RLR. A switching condition for the other two states includes detection of an RLP / recovery of an RLP. That is, in the normal state, once an RLP is detected, an RLR stage is entered. In the RLR detection process, if recovery from an RLP is detected, the normal state is recovered. Detecting a cause of an RLP and reporting it to the BS is a process inserted in the RLR stage. The purpose is that, by assisting the UE in recovering the RLP from BS, the speed of recovery can be further improved and the success rate of recovery can be increased.
    [0048] [0048] Specifically, after the detection of an RLP presence, the RLR detection stage is entered. During RLR detection, the measurement module 11 is configured to determine the cause of the RLP by detecting a type of the same, where the type of the RLP includes profound fading of the local frequency band and excessive interference of the local frequency band ( for example, the interference level of a local frequency band is higher than a predetermined value or an average interference level of other frequency bands). When determining the type of the RLP, the measurement module 11 measures a full frequency band of the SCC using at least one from a CSI-RS
    [0049] [0049] Specifically, during the measurement of the complete frequency band in relation to the SCC, the Measurement Ways may include: (Way I) measure the complete frequency band of the SCC to obtain the result of the measurement of a local frequency band ePDCCH / PDSCH (the measurement result can be RSRP, RSRQ, etc.) and measurement result from other frequency bands (or an average RSRP / RSRQ from other frequency bands); compare the measurement result of the local frequency band with the measurement result of other frequency bands; if the result of the measurement of the local frequency band is less than the result of the measurement of the complete frequency band, determine the type of RLP as profound fading of the local frequency band; and (Way II) measure SCC full frequency band interference to obtain an interference level from a local ePDCCH / PDSCH frequency band and an interference level from other frequency bands (or an average interference level from other frequency bands); after comparing the two results, if the interference level of the local frequency band is higher than the interference level of the complete frequency band, determine the type of RLP as excessive interference of the local frequency band.
    [0050] [0050] According to Way I, if the type of RLP is determined as a deep fading of the local frequency band, that is, the cause of the RLP is a deep fading of a local frequency band of the ePDCCH / PDSCH, the result of measurement can be reported to BS via an uplink PCC (PCC UL), and extra channel quality information indicators can be conducted to indicate the various subbands in the current measurement result with the best channel quality.
    [0051] [0051] According to Way II, if the type of RLP is determined as excessive interference from the local frequency band, that is, the cause of the RLP is that a local frequency band from ePDCCH / PDSCH has excessive interference, the result measurement can be reported to BS via a PCC UL, and interference information from the current channels can be conducted. After BS receives the report from the UE, coordination of inter-cell interference in the frequency domain (ICIC) and the like can be performed to assist the UE in recovering the RLP.
    [0052] [0052] In one mode, measurement of the complete frequency band can be performed according to the exposed Way I. If the type of RLP cannot be determined according to the exposed Way I, measurement of the complete frequency band can be additionally performed according to the exposed Way II. In another mode, measurement can be performed in accordance with Way II exposed first. If the type of RLP cannot be determined according to the exposed Way II, measurement of the complete frequency band can be additionally performed according to the exposed Way I. In other modalities, the measurement module can use other ways to perform measurement of the complete frequency band, combined with the exposed Way I and / or Way II. In addition, during the measurement of the complete frequency band using other ways, other causes for the RLP can be obtained based on the measurement result. At this time, other ways can be used to assist the UE in recovering the RLP.
    [0053] [0053] The previous content described the process of forming the cause of an RLP (or the process of detecting the type of RLP). The purpose of
    [0054] [0054] During RLR detection, the measurement module 11 is additionally configured to perform RLR detection in relation to the SCC. Specifically, when performing RLR detection, measurement module 11 is additionally configured to perform RLR detection in relation to a local frequency band of the SCC using a DM-RS (i.e., RLR detection in the subband) and / or perform RLR detection in relation to a full frequency band of the SCC using a Reduced CRS (ie broadband RLR detection), where, if determined, through RLR detection, that the SCC does not can recover from the RLP, the measurement module 11 determines that the SCC has an RLF.
    [0055] [0055] That is, during RLR detection, RLR detection can be performed by a traditional RLM mechanism. If RLP type detection can be performed using Way I and / or Way II exposed during RLR detection to effectively determine a cause of the RLP, the speed of recovery can be improved through frequency diversity, position adjustment from the frequency domain of the ePDCCH / PDSCH and / or ICIC in the frequency domain and the like, thereby increasing the RLR detection success rate.
    [0056] [0056] In the aforementioned solution, it does not matter whether RLM measurement is performed in relation to SCC to determine the presence of an RLP, RLR detection is performed in relation to a local SCC frequency band or RRM measurement is performed in relation to to the SCC, when measuring the PDSCH using a DM-RS, the measurement module 11 can be configured to use a PDSCH transmission efficiency obtained based on a modulation and encoding scheme (MCS) and a rate of
    [0057] [0057] Furthermore, it does not matter whether RLM measurement is performed against the SCC to determine the presence of an RLP, RLR detection is performed against a local SCC frequency band or RRM measurement is performed against to the SCC, when measuring the ePDCCH using a DM-RS, the measurement module 11 can map a measurement result as a block error rate (BLER) of a given downlink control information (DCI) format and evaluate ePDCCH based on BLER.
    [0058] [0058] According to the technical solution of this invention, improvements are made in the control of NCT activation, which is a key technique for a physical layer of Small Cell Intensification. In Rel-12, interlocal CA and dual connection and the like are important topics for standardization. Under these scenarios, due to the innovative characteristics of NCT and changes in the network structure (transfer by non-ideal data concentration, intense implementation), loss of accuracy in RRM measurement and time delay in reporting may no longer satisfy network requirements . The present application proposes reference signals used in the measurement of SCC. In some of the modalities exposed, this request considered changes in NCT and control of carrier activation is performed using an RLM mechanism. By improving this order, RRM measurement can be performed against SCCs, and the problem where traditional RRM cannot be applied is avoided.
    [0059] [0059] The following will describe the activation control solution of the modalities of this invention in detail.
    [0060] [0060] In a radio communication system, a reference signal is a known transmission sequence mainly used
    [0061] [0061] In the current standardization work, the main NCT application scenarios are as follows: carrier aggregation is performed on NCT carriers, who function as SCCs, and traditional backward compatible carriers to serve the UE. However, before the UE aggregates holders of NCT, the holders' availability must be known. In traditional carrier aggregation mechanisms, a corresponding RSRP / RSRQ result is obtained by measuring the CRS of a target carrier by the UE and is used as the standard for assessing the quality of the target carrier signal.
    [0062] [0062] In patients with NCT, Reduced CRSs perform the measurement exposed in the replacement of CRSs. However, since the transmission period for Reduced CRSs is quite long and Reduced CRSs are reduced, the measurement accuracy is greatly reduced, causing loss of performance. Therefore, this invention proposes the following various methods of measuring NCT carriers based on DM-RSs and CSI-RSs on NCT carriers. It should be noted that the following measurement methods can be used collectively or individually.
    [0063] [0063] (Way I): A DM-RS from the UE is transmitted in a resource block indicated by a traditional backward compatible carrier, and the UE measures the carrier based on the DM-RS. In previous standards, DM-RSs coexist with transmission data. However, in the current case, since the UE does not activate the NCT carrier, no data is transmitted. Therefore, data may not be
    [0064] [0064] (Way II): Configuration of a CSI-RS is completed by a traditional backward compatible carrier. The UE measures the bearer by measuring the CSI-RS.
    [0065] [0065] (Way III): After the UE instructs NCT carrier aggregation in relation to a backward compatible carrier, the NCT can configure certain features for measurement. Measurement resources are not continuous in the time domain, and only exist in certain subframes; they do not occupy the entire frequency band in the frequency domain, but only occupy a few RBs (such as RBs in the central frequency). When configuring the resource block, scheduling the user in relation to the resource block should be avoided. In this regard, if multiple users apply for NCT carrier aggregation in relation to a traditional backward compatible carrier, and if possible, users should be arranged in the same resource block for measurement.
    [0066] [0066] Compared with traditional carriers, NCT has many innovative features. To increase the effectiveness of data transmission, a large number of common cell control signals are canceled by NCT. ePDCCHs in NCT are used to replace traditional control channels. The biggest difference between ePDCCHs and PDCCHs is that DM-RSs are used for data demodulation, and resource allocation is performed against time domain OFDM symbols. Therefore, ePDCCHs and PDSCHs are similar. At the same time, NCT needs to better support SmallCell's application scenarios in the future. Since future cells will be more dense, NCT needs to provide better interference coordination mechanisms.
    [0067] [0067] Considering the exposed characteristics of NCT, the
    [0068] [0068] The RLM mechanism for physical layers can simply define the current limits in sync and out of sync by mapping CRSs to BLER based on the measurement of CRSs. Therefore, the concept of BLER mapping must remain effective under NCT scenarios. T310 / N310 / N311
    [0069] [0069] The RLM mechanism for physical layers is based on T310 / N310 / N311 counters. This mechanism can effectively avoid ping-pong and achieve a balance between precision and sensitivity. Therefore, this mechanism must remain effective under NCT scenarios. Reference signs
    [0070] [0070] The RLM mechanism for physical layers is based on the measurement of CRSs. Under NCT scenarios, since CRSs are removed, other reference signals must be used, where candidate reference signals include DM-RSs, CSI-RSs and Reduced CRSs.
    [0071] [0071] DM-RSs must be considered to have top priority. Since CRSs are used for demodulation of downlink control channels, traditional RLM mechanisms are based on the measurement of CRSs. The rest can be deduced by analogy, DM-RSs are used for demodulation of ePDCCHs, the RLM mechanism under NCT scenarios can be based on the measurement of DM-RSs. What's more, since DM-RSs are added before pre-coding, pre-coding gains can be obtained, and the block error rate information of current resource blocks can be more accurately reflected. At the same time, since DM-RSs are UE-specific, a DM-RS-based RLM mechanism actually reflects the link information of a certain subband.
    [0072] [0072] A CSI-RS is a specific broadband measurement signal
    [0073] [0073] A Reduced CRS is a broadband measurement signal. Although its transmission period is relatively long (in fact, in the RLF detection mechanism, the interval between two adjacent indications is not less than 10 ms, your CRS measurement interval must also be not less than 10 ms, so a Reduced CRS is suitable for RLM measurement in this particular), and its moderate measurement accuracy, it is suitable for RRM measurement and broadband RLM measurement as a whole. Control channels and data channels
    [0074] [0074] NCT is dedicated to the optimization of data transmission. Data demodulation is performed through DM-RSs for both PDSCHs and ePDCCHs. Therefore, PDSCHs can be considered in an RLM engine under NCT scenarios. As NCT is dedicated to optimizing data transmission, PDSCHs are also considered as a measurement object during NCT deactivation, so that the measurement can maintain the transmission quality of the data channels. As PDSCHs and ePDCCHs have different levels of significance (the reliability of the control channels determines which transmission on the data channel was successful or not) and different characteristics (PDSCHs have an HARQ mechanism that can greatly reduce transmission errors, so both types channels have different requirements in BLER), the evaluation principles of PDSCHs and ePDCCHs are also different. Flexible bandwidth configuration
    [0075] [0075] Another designed objective of NCT is flexible bandwidth configuration. After removing widely distributed signaling / control channels across the entire bandwidth, NCT has strong bandwidth scalability. Therefore, the RLM mechanism under NCT must also have this characteristic.
    [0076] [0076] NCT is for Small Cell implementation. For densely implemented small cell scenarios that are likely to appear in the future, the RLM mechanism under NCT should also have better interference coordination functions.
    [0077] [0077] Due to the characteristics of the NCT reference signals, traditional carrier deactivation mechanisms based on RRM measurement will suffer substantial loss of NCT performance. Therefore, an RLM mechanism is applied to disable NCT carriers in this invention. Detection of the radio link problem
    [0078] [0078] The RLP detection mechanism under NCT scenarios is mainly based on the detection of ePDCCHs subband RLP, which is mainly based on the measurements of DM-RSs in ePDCCHs. The measurement result is mapped to a BLER transmitted in a given DCI format. Other steps are the same as for a traditional RLM mechanism, which is based on T310 / N310 / N311. If the BLER is higher than a predetermined limit in a moving window period, an out-of-sync indication will be sent to a higher level. If the highest level receives multiple out of sync indications consecutively, an RLP is considered to be detected, and a corresponding counter is started to enter the RLR process.
    [0079] [0079] The RLP detection mechanism under NCT not only considers ePDCCHs, but also PDSCHs. RLP detection of PDSCHs is also based on the measurement of DM-RSs in PDSCHs. The evaluation principle can still be based on BLER or other criteria. For example, the overall transmission efficiency (such as the frequency spectrum utilization rate) of the current PDSCH can be obtained based on the
    [0080] [0080] After the detection of an RLP, the origin and cause of the RLP must be identified.
    [0081] [0081] If an ePDCCH has an RLP, the cause of the RLP can be determined according to the following steps: (Step I) Complete frequency band measurement setup
    [0082] [0082] The measurement of the complete frequency band can be based on Reduced CRSs or CSI-RSs. Since CSI-RSs can only be used after BS configuration and are UE specific, extra data channel resources will be taken up. Therefore, Reduced CRSs are a preferred solution when performing the measurement of the full frequency band.
    [0083] [0083] The purpose of measuring the complete frequency band is to determine whether the current RLP is caused by a profound fading of the current PRB. First, a measurement result (indicated by RSRP / RSRQ) for the current subband is obtained, and is compared with an average measurement result for the complete frequency band. If the measurement result for the current subband is less than the average measurement result for the full frequency band, it is determined that the current RLP is caused by deep fading of the local frequency band.
    [0084] [0084] Then, an evaluation result can be reported to BS through PCC UL by the UE, and it conducts CQI information that identifies the current sub-bands with the best channel quality in the measurement result. After receiving the report from the UE, the BS can perform frequency diversity or adjust the position of the frequency domain in relation to the ePDCCHs to assist the UE in recovering the RLP. If frequency diversity or position adjustment of the frequency domain in relation to the
    [0085] [0085] If the RLP is not caused by a deep fading of the local frequency band, the following Step II must be performed: (Step II) Interference measurement setup
    [0086] [0086] If the RLP is not caused by a deep fading of the local frequency band, it is possibly caused by excessive interference. At this point, interference measurement should be performed on the subband and the entire band to determine if the interference level of the current channel is higher than an average interference level of the entire band. If so, the cause of the current RLP is possibly caused by excessive interference from the local frequency band.
    [0087] [0087] Then, an evaluation result can be reported to BS through PCC UL by the UE, and it conducts the interference information level of the current channel. After receiving the report from the UE, BS can perform ICIC in the frequency domain to assist the UE in recovering the RLP.
    [0088] [0088] If the RLP is also not caused by excessive interference from the local frequency band, the UE may need to perform a random access process again or remove the corresponding SCT NCT from the carrier set.
    [0089] [0089] The order of the exposed Steps I and II can be changed. Furthermore, if a PDSCH has an RLP, the cause of the RLP can be determined using a similar way. Detection of radio link recovery
    [0090] [0090] The RLR detection mechanism under NCT scenarios can be divided into RLR detection in the subband and broadband RLR detection.
    [0091] [0091] RLR detection in the subband: The RLR detection mechanism in the subband is also
    [0092] [0092] In this process, if the PRB allocated by the ePDCCH is changed, the movable window and the L3 filter are reset. At the same time, the T310 counter can be returned, or the timer expiry limit is extended, but the total number of extensions must be restricted.
    [0093] [0093] Broadband RLR detection: The UE can be configured to perform broadband RLR detection, which is based on the measurement of Reduced RCSs. The broadband RLR detection mechanism is well compatible with the Rel-8 RLR detection mechanism.
    [0094] [0094] Similarly, the RLR detection mechanism should also consider PDSCHs and measurements of DM-RSs in PDSCHs. At the moment, the evaluation indicator is not the BLER, but the overall transmission efficiency (such as the frequency spectrum utilization rate) of the current PDSCH obtained based on the estimated BLER and MSC information.
    [0095] [0095] In relation to figure 2, the RLP detection, RLP type detection and RLR detection processes are as follows: First, whether an RLP is present is determined by measuring the subband.
    [0096] [0096] For example, reception can be performed based on the T310 / N310 / N311 counter. If multiple out-of-sync indications (such as N310 out-of-sync indications) are not received
    [0097] [0097] While performing RLR detection, full band measurement must be performed.
    [0098] [0098] It is determined if the RLP is caused by a deep fading of the local frequency band. If so, the cause (type of RLP) is reported to BS, and BS will assist the UE in recovering the RLP.
    [0099] [0099] If the RLP is caused not by a deep fading of the local frequency band, it is determined whether the RLP is caused by excessive interference from the local frequency band.
    [00100] [00100] If it is determined that the RLP is caused by excessive interference from the local frequency band, the cause (type of the RLP) is reported to the BS, and the BS will assist the UE in recovering the RLP.
    [00101] [00101] No matter if the cause of the RLP is successfully detected, if multiple indications in sync (such as a predetermined number of indications in sync) are received consecutively (before the T310 counter expires), it is determined that the UE is recovered successful RLP. Then, it will be continuously detected under the normal state if the RLP is present. Detecting the type of RLP (cause) can facilitate the UE in recovering the RLP.
    [00102] [00102] When performing RLR detection, if multiple synchronous indications (for example, synchronous indications received consecutively do not reach a predetermined number) are not received consecutively (before the T310 counter expires), it is determined that an event RLF is detected, and the occurrence of the RLF event can be announced.
    [00103] [00103] This invention will be described in relation to specific examples.
    [00104] [00104] Example 1: The UE communicates with the BS using NCT and performs detection of subband RLP in relation to the NCT ePDCCH. The specific steps are as follows: (1) measure a DM-RS in an NCT ePDCCH, and map a measurement result as a BLER transmitted in a given DCI format; (2) compare the BLER with a predetermined limit, and send an instruction out of sync to a higher level if the limit is exceeded; (3) the UE determines that RLP is detected if out of sync N310 indications are received consecutively, and prepares to enter the RLR process.
    [00105] [00105] Detection of RLP can be performed in relation to PDSCH in NCT similarly. The specific solution is similar to the ePDCCH measurement solution described in this example. The difference is that the limit for evaluation is the overall efficiency of the current PDSCH transmission obtained based on the BLER estimate and the MCS information.
    [00106] [00106] Example 2: After the UE detects an RLP, the cause of the RLP needs to be identified. The specific steps are as follows: (1) configure full band measurement based on RS Reduced or CSI-RS; (2) compare a subband measurement result (indicated by RSRP / RSRQ) with an average full band measurement result; (3) if the subband measurement result is less than the average full band measurement result, determine that RLP is caused by profound fading of the local frequency band; (4) report an evaluation result to BS by the UE through PCC UL, with CQI information that identifies the current sub-
    [00107] [00107] If the result of the full band measurement indicates that the RLP is not caused by a deep fading of the local frequency band, interference measurement is configured according to the following steps: perform interference measurement in the sub-bands and in full the band; if the subband interference is higher than the full band interference, determine that the reason for RLP is caused by excessive local frequency band interference; report an assessment result that includes the interference information from the channel to the BS by the UE through PCC UL; and perform, by BS, ICIC processing in the frequency domain based on the outcome of the UE report to assist the UE in the recovery of RLP.
    [00108] [00108] For PDSCHs, a similar way can be used to determine the cause of RLP.
    [00109] [00109] Example 3: After detecting an RLP, the UE needs to perform link recovery through an RLR process. If recovery fails, then RLP occurs. The NCT RLR detection process is as follows: (1) measure a DM-RS in an NCT ePDCCH, and map a measurement result as BLER transmitted in a given DCI format; (2) compare the BLER and a predetermined limit, and send an indication in sync to a higher level if the BLER is lower
    [00110] [00110] RLR detection can be performed in relation to NCT PDSCH based on DM-RSs similarly. The difference is that the limit for evaluation is the overall efficiency of the current PDSCH transmission obtained based on the BLER estimate and the MCS information.
    [00111] [00111] In addition to detecting RLR in the subband, a method of detecting broadband RLR based on Reduced CRS can be configured.
    [00112] [00112] One embodiment of this invention provides a method of controlling SCC NCT activation.
    [00113] [00113] As shown in figure 3, the SCC NCT activation control method of a modality of this invention comprises: step S301: perform link measurement by radio in an SCC by measuring at least one of a demodulation reference signal (DM-RS) and a reference signal from the channel status indicator (CSI-RS); and step S303: perform activation control in relation to the SCC based on a measurement result.
    [00114] [00114] When radio link measurement is performed in relation to the SCC, radio link measurement from the SCC can be performed using at least one of the DM-RS and CSI-RS based on the DM-RS configuration information and / or CSI-RS.
    [00115] [00115] Furthermore, the radio link measurement performed on the SCC includes measurement of the RLM and, during the performance of the activation control on the SCC based on a measurement result, the SCC is disabled if the measurement of the RLM determines that a radio link failure (RLF) occurs
    [00116] [00116] The radio link measurement performed at the SCC includes measurement of radio resource management (RRM) and, during the performance of the activation control in the SCC based on a measurement result, corresponding activation control is performed in relation to to the SCC based on an activation / deactivation instruction determined by a base station based on an RRM measurement result.
    [00117] [00117] Furthermore, during the RLM measurement in relation to the SCC, an intensified downlink control channel (ePDCCH) and / or a downlink shared channel (PDSCH) are measured using the DM- LOL.
    [00118] [00118] When the SCC has an RLP radio link problem during the RLM measurement, an RLP cause is detected and reported to a base station.
    [00119] [00119] The SCC NCT activation control method of this invention can also include RLP type detection and RLR process detection, the details of which are described in the previous part and will not be repeated here.
    [00120] [00120] One embodiment of this invention provides a base station device configured to manage a carrier set of user equipment that contains an NCT SCC.
    [00121] [00121] As shown in figure 4, the base station device of one embodiment of this invention comprises: a communication module 41 configured to receive, from the user equipment, a result of the radio link measurement performed in relation to to a SCC by using at least one of a demodulation reference signal (DM-RS) and a channel status indicator reference signal (CSI-RS); and a management module 42 configured to manage an SCC activation state contained in the carrier set of
    [00122] [00122] The base station device may additionally comprise: a configuration module (not shown) configured to configure the SCC DM-RS and / or CSI-RS based on a request to measure the SCC NCT of the user so that the user equipment performs the link measurement by radio in the SCC using at least one of the DM-RS and CSI-RS.
    [00123] [00123] The communication module 41 is additionally configured to receive information reported by the user equipment after the user equipment performs RLM measurement in relation to an intensified downlink control channel (ePDCCH) and / or a shared channel in physical downlink (PDSCH) using DM-RS.
    [00124] [00124] Additionally, the information that is reported by the user equipment received by the communication module 41 includes a cause of a radio link problem (RLP), and in which the base station device additionally comprises a support module. recovery (not shown) configured to assist user equipment in RLP recovery.
    [00125] [00125] Specifically, the recovery aid module is configured to: perform frequency diversity or position adjustment in the frequency domain in relation to (a) corresponding ePDCCH (s) and / or PDSCH (s) when the cause of the RLP is profound fading of the local frequency band; and perform inter-cell interference coordination (ICIC) processing in the frequency domain in relation to (a) corresponding ePDCCH (s) and / or PDSCH (s) when the cause of the RLP is excessive interference from the local frequency band. If the RLP is caused by other causes, the recovery aid module is also configured to assist user equipment in recovering the RLP using other
    [00126] [00126] When the information that is reported by the user equipment received by the communication module 41 indicates that the result of the RLM measurement is a radio link failure (RLF) of the SCC, the management module 42 defines the SCC contained in the set user equipment carrier to be disabled.
    [00127] [00127] The communication module 41 is additionally configured to receive, from the user equipment, a result of the RRM measurement performed in relation to the SCC using at least one of the DM-RS and CSI-RS, and the module of Management 42 is additionally configured to define the SCC contained in the carrier set of the user equipment to be activated or deactivated based on the result of the RRM measurement.
    [00128] [00128] One embodiment of this invention provides a SCC NCT management method configured to manage a carrier set of user equipment that contains an NCT SCC.
    [00129] [00129] As shown in figure 5, the SCC NCT management method of a modality of this invention comprises: step S501: receiving, from the user equipment, a result of the radio link measurement performed in relation to a SCC by using at least one of a DM-RS demodulation reference signal and a CSI-RS channel status indicator reference signal; and step S503: manage an SCC activation state contained in the carrier set of the user equipment based on a measurement result.
    [00130] [00130] To facilitate the UE to measure the SCC, the method additionally comprises:
    [00131] [00131] Furthermore, during the reception, from the UE, of a result of the radio link measurement performed at the SCC using the DM-RS reference signal, the information reported by the UE is received after the UE performs measurement of the RLM against an ePDCCH and / or a PDSCH using the DM-RS.
    [00132] [00132] And the receipt of the information reported by the UE includes receiving a cause of a link problem by RLP radio; and the method further comprises: assisting the UE in recovering the RLP based on the cause.
    [00133] [00133] Furthermore, the method further comprises: when the reported information received by the UE includes that the result of the RLM measurement is a radio link failure (RLF) from the SCC, define the SCC contained in the UE carrier set as disabled.
    [00134] [00134] To recap, considering the innovative characteristics of NCT and changes in the network structure, the present invention proposes reference signals used in the measurement of SCC NCT, which can precisely and reasonably measure SCC NCTs. By carrying out measurement and activation control in relation to carriers using an RLM mechanism, this invention can effectively improve the NCT interference coordination capability, making flexible bandwidth configurations, while ensuring good performance. Furthermore, by means of the solution to improve this order, RRM measurement can be performed in relation to SCCs, so that the problem in which traditional RRM measurement cannot be applied in NCT is avoided.
    [00135] [00135] The basic principle of this invention has been described above. However, it should be noted that those skilled in the art can understand that all
    [00136] [00136] Therefore, the purpose of this invention can be accomplished by operating a program or a group of programs on any calculation device. The calculation device is a well-known common device used. Therefore, the purpose of this invention can be accomplished by providing program products that contain program codes to realize the method or the device. That is, such program products and storage media that stores such program products also form this invention. Obviously, the storage media can be any known storage media or any storage media developed in the future.
    [00137] [00137] Another embodiment of this invention provides a storage medium (which can be a ROM, RAM, hard disk, detachable memory or the like) embedded with a computer program to perform activation control of SCC NCT, the program computer being configured to execute the code segments of the following steps: perform link measurement by radio in an SCC by measuring at least one of the DM-RS demodulation reference signal and a reference signal of the channel status indicator CSI-RS; and perform activation control in relation to the SCC based on a measurement result.
    [00138] [00138] Another embodiment of this invention provides a storage medium (which can be a ROM, RAM, hard disk, detachable memory or the like) embedded with a
    [00139] [00139] Another modality of this invention provides a computer program configured to execute the code segments of the following SCC NCT activation control steps: perform link measurement by radio in an SCC by measuring at least one of a signal. DM-RS demodulation reference and a CSI-RS channel status indicator reference signal; and perform activation control in relation to the SCC based on a measurement result.
    [00140] [00140] Another embodiment of this invention provides computer software configured to execute the code segments of the following SCC NCT activation management steps: receiving, from the user equipment, a result of the radio link measurement performed in with respect to a SCC by using at least one of a DM-RS demodulation reference signal and a CSI-RS channel status indicator reference signal; and manage an SCC activation state contained in user equipment carrier sets based on a measurement result.
    [00141] [00141] Another embodiment of this invention provides a device that includes a processor, the processor being configured to perform the following steps of controlling the activation of SCC NCT: perform link measurement by radio in a SCC by measuring at least one of a demodulation reference signal DM-RS and a reference signal from the DM-RS
    [00142] [00142] Another embodiment of this invention provides a device (which may be provided on the side of the base station device or may be a part of the base station device) that includes a processor, the processor being configured to perform the following steps activation management system NCT: receive, from the user equipment, a result of the radio link measurement performed in relation to an SCC by using at least one of the DM-RS demodulation reference signal and one signal reference of the CSI-RS channel status indicator; and manage an SCC activation state contained in user equipment carrier sets based on a measurement result.
    [00143] [00143] In a modality in which this invention is performed by software and / or firmware, a program that forms the software can be installed on a computer with a dedicated hardware structure from a storage medium or a network, for example, a general computer 600 shown in figure 6, and when the computer is installed with several programs, several functions can be performed.
    [00144] [00144] In figure 6, a central processing unit (CPU) 601 performs various processes according to a program stored in an exclusive read-only memory (ROM) 602 or a program loaded from a storage section 608 in a memory random access (RAM) 603. Data required to perform multiple processing by CPU 601 can be stored in RAM 603 if necessary. CPU 601, ROM 602 and RAM 603 are connected to each other by a bus 604. The input / output interface 905 is also connected to bus 604.
    [00145] [00145] The following elements are also connected in the interface of
    [00146] [00146] A 610 unit can also be connected to the 605 input / output interface if necessary. Detachable media 611, such as a magnetic disk, compact disk, magnetic-optical disk and semiconductor storage etc., can be installed in the 610 unit if necessary, so that a computer program read from it can be installed. in storage section 608.
    [00147] [00147] When the exposed processing is performed by software, a program that forms the software can be installed from a network, such as the Internet, or a storage medium, such as detachable medium 611.
    [00148] [00148] Those skilled in the art should understand that such storage media are not limited to the detachable media 611 shown in figure 6, which stores a program and can transmit a program to a user detachable from a device. Examples of 611 detachable media include magnetic disks (including Floppy Disk (a trademark)), compact disks (including compact disk ROMs (CD-ROMs) and digital versatile disks (DVDs)), magnetic-optical disks (including mini-disks (MD ) (a registered trademark)), and semiconductor storage. Or the storage media can be ROM 602 or a hard drive included in storage section 608 that includes a program and is distributed to a user along with a device that contains it.
    [00149] [00149] It should be noted that the elements or steps of the device and method of this invention can be divided and / or recombined. Such division and / or recombination should be considered as equivalent solutions to this invention. In addition, the exposed processing steps can be performed chronologically according to the description, but the chronological sequence may not be necessary. Some steps can be performed in parallel or independently.
    [00150] [00150] Although the present invention and its advantages are exhaustively described, it is understood that modifications, substitutions and replacements can be made without departing from the spirit and scope defined by the attached claims of this invention. The terms "comprises", "includes" or other variations of this application mean non-exclusive inclusion, so that a process, method, product or device that includes a number of elements not only includes the listed elements, but also other elements not clearly specified or the elements inherently included in that way. When there is no other restriction, an element defined by the phrase “including / comprising a…” does not exclude other identical elements included in the process, method, product or device that include the specified element.
    权利要求:
    Claims (20)
    [1]
    1. Activation control device of the Secondary Component Carrier SCC of the New Type of Carrier NCT, characterized by the fact that it comprises: a measurement module configured to perform link measurement by radio in an SCC by measuring at least one of a DM-RS demodulation reference signal and a CSI-RS channel status indicator reference signal; and an activation control module configured to perform activation control in the SCC based on a measurement result.
    [2]
    2. Activation control device according to claim 1, characterized by the fact that the measurement module is configured to carry out radio link measurement at the SCC using at least one of the DM-RS and CSI-RS based at least one DM-RS and CSI-RS configuration information.
    [3]
    3. Activation control device according to claim 2, characterized by the fact that the radio link measurement performed by the measurement module in the SCC comprises measuring the link management by RLM radio, and the activation control module is configured to disable SCC if the RLM measurement determines that an RLF radio link failure occurs at the SCC.
    [4]
    4. Activation control device according to claim 3, characterized by the fact that it additionally comprises a communication module configured to inform at least one of the SCL RLF and the SCC deactivation for one side of the network.
    [5]
    5. Activation control device according to claim 3, characterized by the fact that the radio link measurement performed by the measurement module in the SCC comprises measuring the RRM radio resource management, and the activation control module is configured to perform corresponding activation control on the SCC based on an activation or deactivation instruction determined by a base station based on an RRM measurement result.
    [6]
    6. Activation control device according to claim 3, characterized by the fact that, during the measurement of the RLM at the SCC, the measurement module is configured to measure an intensified downlink control channel ePDCCH e / or a shared channel on a physical downlink PDSCH using DM-RS.
    [7]
    7. Activation control device according to claim 6, characterized by the fact that the measurement module is additionally configured so that, when the SCC has an RLP radio link problem during the RLM measurement, it detects a cause of the RLP and report the cause to a base station.
    [8]
    8. Activation control device according to claim 7, characterized in that the measuring module is configured to determine the cause of the RLP by detecting a type of the RLP, the type of the RLP comprising deep fading of the frequency band local and excessive interference from the local frequency band, and the measurement module is configured to measure a full frequency band from the SCC using at least one from the CSI-RS and a Reduced CRS, and compare a result of the frequency band measurement complete and a result of measuring a local ePDCCH frequency band to determine the type of the RLP.
    [9]
    9. Activation control device according to claim 7, characterized by the fact that the measurement module is additionally configured to perform RLR radio link recovery detection in the SCC and, during the RLR detection, the module measurement is configured to perform a detection selected from the group consisting of RLR detection in a SCC local frequency band using DM-RS, perform RLR detection in a full SCC frequency band using a Reduced CRS, and a combination thereof, and when the RLR detection determines that the SCC cannot recover from the RLP, the measurement module determines that the SCC has the RLF.
    [10]
    10. Activation control device according to claim 6, characterized by the fact that the measuring module is configured to, during the measurement of the PDSCH using the DM-RS, use a transmission efficiency of the PDSCH as an evaluation limit to evaluate the PDSCH, and transmission efficiency is obtained based on a MCS modulation and coding scheme and a BLER detected block error rate.
    [11]
    11. Activation control device according to claim 6, characterized by the fact that the measurement module is configured to, when measuring the ePDCCH using the DM-RS, map a measurement result as a block error rate BLER of a given format of the DCI downlink control information and evaluate the ePDCCH based on the BLER.
    [12]
    12. Method of control of activation of the Secondary Component Carrier SCC of the New Type of Carrier NCT, characterized by the fact that it comprises: to carry out measurement of linkage in radio in an SCC by the measurement of at least one of a DM demodulation reference signal -RS and a reference signal from the CSI-RS channel status indicator; and perform activation control in the SCC based on a measurement result.
    [13]
    13. Activation control method according to claim 12, characterized by the fact that the radio link measurement performed at the SCC comprises: performing the radio link measurement at the SCC using at least one from DM-RS and CSI -RS based on at least one DM-RS and CSI-RS configuration information.
    [14]
    14. Activation control method according to claim 13, characterized by the fact that the radio link measurement performed at the SCC comprises measuring the link management by radio RLM and, during the performance of activation control at the SCC based on in the measurement result, if the RLM measurement determines that an RLF radio link failure occurs at the SCC, SCC deactivation is performed.
    [15]
    15. Activation control method according to claim 14, characterized by the fact that the radio link measurement performed at the SCC comprises measuring the RRM radio resource management and, during the performance of the activation control at the SCC based on in the measurement result, corresponding SCC activation control is performed based on an activation or deactivation instruction determined by a base station based on an RRM measurement result.
    [16]
    16. Activation control method according to claim 14, characterized by the fact that, during the measurement of the RLM in the SCC, an intensified downlink control channel ePDCCH and / or a shared downlink channel PDSCH are measured using the DM-RS.
    [17]
    17. Activation control method according to claim 16, characterized by the fact that, when the SCC is detected due to an RLP radio link problem during the RLM measurement, a cause of the RLP is detected and the cause is reported to a base station.
    [18]
    18. Base station device configured to manage a carrier set of user equipment that contains an NCT Secondary Type SCC Secondary Component Carrier, the base station device characterized by the fact that it comprises:
    a communication module configured to receive, from the user's equipment, a result of the radio link measurement performed in a SCC using at least one of the DM-RS demodulation reference signal and an indicator reference signal the status of the CSI-RS channel; and a management module configured to manage an SCC activation state contained in the user equipment carrier set based on a measurement result.
    [19]
    19. Base station device according to claim 18, characterized in that it additionally comprises: a configuration module configured to configure at least one of the SCC's DM-RS and CSI-RS based on a request to measure the NCT SCC from the user equipment, so that the user equipment performs the link measurement by radio in the SCC using at least one of the DM-RS and CSI-RS.
    [20]
    20. Base station device according to claim 18, characterized in that the communication module is additionally configured to receive information reported by the user equipment after the user equipment performs measurement of the RLM radio link management in an ePDCCH enhanced downlink control channel and / or a PDSCH downlink shared channel using the DM-RS.
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    法律状态:
    2020-08-18| B15K| Others concerning applications: alteration of classification|Free format text: AS CLASSIFICACOES ANTERIORES ERAM: H04W 72/08 , H04W 72/12 Ipc: H04L 5/00 (2006.01), H04W 72/08 (2009.01) |
    2020-08-18| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2020-09-08| B15I| Others concerning applications: loss of priority|Free format text: PERDA DA PRIORIDADE CN 201310415651.2 POR AUSENCIA DE CUMPRIMENTO DA EXIGENCIA PUBLICADA NA RPI NO 2563, DE 18/02/2020. |
    2020-12-08| B11B| Dismissal acc. art. 36, par 1 of ipl - no reply within 90 days to fullfil the necessary requirements|
    2021-11-23| B350| Update of information on the portal [chapter 15.35 patent gazette]|
    优先权:
    申请号 | 申请日 | 专利标题
    CN201310415651.2|2013-09-12|
    CN201310415651.2A|CN104469945B|2013-09-12|2013-09-12|Activated control and method, the management method and base station apparatus of NCT SCC|
    PCT/CN2014/084231|WO2015035841A1|2013-09-12|2014-08-13|Nct scc activation and control apparatus and method, management method, and base station apparatus|
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