WO2013178043A1 - 一种增强型物理下行控制信道的使能方法、设备及系统 - Google Patents

一种增强型物理下行控制信道的使能方法、设备及系统 Download PDF

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Publication number
WO2013178043A1
WO2013178043A1 PCT/CN2013/076238 CN2013076238W WO2013178043A1 WO 2013178043 A1 WO2013178043 A1 WO 2013178043A1 CN 2013076238 W CN2013076238 W CN 2013076238W WO 2013178043 A1 WO2013178043 A1 WO 2013178043A1
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Prior art keywords
serving cell
pdcch
user equipment
base station
subframe
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PCT/CN2013/076238
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English (en)
French (fr)
Inventor
曾清海
张宏平
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华为技术有限公司
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Publication of WO2013178043A1 publication Critical patent/WO2013178043A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management

Definitions

  • the present invention relates to the field of communications, and in particular, to an enabling method, device, and system for a physical downlink control channel. Background technique
  • the Long Term Evolution (LTE) system is a 3G evolution that improves and enhances 3G air access technology.
  • the peak rate of 1 OOMbit/s and uplink 5 OMbit/s can be provided under the 20MHz spectrum bandwidth.
  • the carrier aggregation Carrier Aggregation
  • five component carriers Component carriers
  • the problem of limitation, blocking, interference, etc. can be solved by adding an Enhanced Physical downlink control channel (E-PDCCH).
  • the EC may also be referred to as a new carrier type (NCAR), which may be associated with an existing PCell or SCell, which is a non-backward compatible carrier, and the downlink timing of the CA may be synchronized with the associated serving cell. Or not synchronized.
  • NCAR new carrier type
  • the embodiment of the present invention provides a method, a device, and a system for enabling a physical downlink control channel.
  • the base station notifies the UE of the resource configuration information of the E-PDCCH, so that the UE monitors the E-PDCCH according to the resource configuration information.
  • an aspect of the present invention provides a method for enabling a physical downlink control channel, including:
  • the base station configures an enhanced physical downlink control channel E-PDCCH for the serving cell serving the user equipment;
  • the serving cell is at least one of the following cells:
  • a primary serving cell, a secondary serving cell, or a serving cell corresponding to a new carrier type is a primary serving cell, a secondary serving cell, or a serving cell corresponding to a new carrier type.
  • An aspect of the present invention provides a method for enabling a physical downlink control channel, including: receiving, by a user equipment, resource configuration information of an enhanced physical downlink control channel E-PDCCH configured by a base station for a serving cell of the user equipment;
  • the user equipment monitors the E-PDCCH according to the resource configuration information
  • the serving cell is at least one of the following cells:
  • a base station including:
  • a configuration unit configured to configure an enhanced physical downlink control channel E-PDCCH for a serving cell serving the user equipment
  • a sending unit configured to send the resource configuration information of the E-PDCCH configured by the configuration unit to the user equipment, so that the user equipment monitors the E-PDCCH according to the resource configuration information;
  • the serving cell is at least one of the following cells:
  • a primary serving cell, a secondary serving cell, or a serving cell corresponding to a new carrier type is a primary serving cell, a secondary serving cell, or a serving cell corresponding to a new carrier type.
  • Another aspect of the present invention provides a user equipment, including:
  • a receiving unit configured to receive, by the base station, an increased configuration of the serving cell of the user equipment Resource configuration information of the strong physical downlink control channel E-PDCCH;
  • a monitoring unit configured to monitor the E-PDCCH according to the resource configuration information received by the receiving unit
  • the serving cell is at least one of the following cells:
  • An embodiment of the present invention provides a method for enabling a physical downlink control channel, a base station, and a user equipment. Notifying the UE of the E-PDCCH resource configuration information by the base station, and causing the UE to monitor the E-PDCCH according to the resource configuration information.
  • FIG. 1 is a flowchart of a method for enabling a physical downlink control channel according to an embodiment of the present invention
  • FIG. 2 is a flowchart of another method for enabling a physical downlink control channel according to an embodiment of the present invention
  • Figure 3 is a schematic diagram of a subframe pattern
  • FIG. 4 is a diagram of E-PDCCH allocation when a primary serving cell performs cross-carrier scheduling on a secondary serving cell in a Hetnet scenario
  • FIG. 5 is an E-PDCCH allocation diagram when a primary serving cell does not perform cross-carrier scheduling on a secondary serving cell in a Hetnet scenario
  • FIG. 6 is a structural diagram of a device of a base station according to an embodiment of the present invention.
  • FIG. 7 is a structural diagram of another apparatus of a base station according to an embodiment of the present invention.
  • FIG. 8 is a structural diagram of a device of a user equipment according to an embodiment of the present invention
  • FIG. 9 is a system diagram of enabling a physical downlink control channel according to an embodiment of the present invention. detailed description
  • the embodiments of the present invention are described from the base station side and the UE side respectively, and the cooperative embodiments of the two are described at the same time, but this does not mean that the two must be implemented together.
  • the UE is implemented separately from the base station, It also solves the problems existing on the UE side and the base station side respectively, but when the two are used in combination, a better technical effect is obtained.
  • a schematic flowchart of an E-PDCCH enabling method on a base station side may include the following steps:
  • the base station configures an enhanced physical downlink control channel E-PDCCH for the serving cell serving the user equipment, where the serving cell is at least one of the following: a primary serving cell, a secondary serving cell, or a serving cell corresponding to the new carrier type. .
  • the embodiment may further include:
  • the sending, by the base station, the E-PDCCH to the user equipment on the serving cell serving the user equipment may include:
  • the base station When the base station determines that the user equipment is in discontinuous reception of the DRX active time, and the time adjustment timer TAT corresponding to the serving cell is running, the base station sends the E to the user equipment on the serving cell.
  • -PDCCH or,
  • the base station determines that the user equipment is in the DRX active time, and the TAT corresponding to the primary timing advance group TAG is running, the base station is on the primary serving cell and the service cell corresponding to the primary TAG. Transmitting, by the user equipment, the E-PDCCH; or
  • the base station When the base station determines that the user equipment is in the DRX active time, the base station sends the E-PDCCH to the user equipment on the serving cell corresponding to the secondary timing advance group TAG;
  • the serving cell corresponding to the primary TAG includes the primary serving cell, or the secondary serving cell, or a serving cell corresponding to the new carrier type;
  • the serving cell corresponding to the secondary TAG includes the secondary serving cell or a serving cell corresponding to the new carrier type.
  • the main service cell refers to the user equipment (User Equipment)
  • the serving cell configured by the UE, the SCell may provide more radio resources for downlink/uplink data transmission/reception of the UE; the cell corresponding to the new carrier type cannot be used as an independent cell.
  • the main purpose of introducing a new carrier type is to reduce the control signaling overhead.
  • 3GPP LTE Release 11 (Rel-11) two types of new carrier types are proposed to be supported, one of which does not provide a synchronization signal, and the downlink timing is synchronized with the associated carrier; The synchronization signal and the cell-specific reference signal are provided, and the downlink timing does not need to be synchronized with the associated carrier.
  • Each UE can configure at most one PCell and 0 ⁇ 4 SCells for the purpose of saving power of the UE, LTE-A.
  • the CA supports discontinuous reception (Discontinuous Reference, DRX) function and SCell activation/deactivation, and PCell cannot be deactivated.
  • the UE does not monitor the physical downlink control channel (Physical downlink control channel) in the deactivated SCell, and does not receive downlink data in the physical downlink shared channel (PDSCH), and does not transmit channel state information (Channel The State Information (CSI)/Sounding Reference Signal (SRS) is not transmitted by the Physical Uplink Shared Channel (PUSCH).
  • CSI Channel
  • SRS Sounding Reference Signal
  • the PCell and all configured and activated S Cells follow the same DRX, that is, the UE has the same active time rule in the PCell and all activated SCells.
  • the PDCCH is used to carry the resource information allocated for the UE, and each UE monitors the PDCCH allocated for itself, and acquires resource information, and can transmit data on the time-frequency resource indicated by the resource information.
  • the LTE-A CA supports non-cross carrier scheduling and cross carrier scheduling.
  • the UE monitors the PDCCH on the serving cell during the activity of the PCell and the SCell.
  • the SCell can be configured to be scheduled by the PCell or another SCell; the PCell can only be scheduled by itself and cannot be scheduled across carriers.
  • the serving cell that transmits the PDCCH is called a scheduling cell, and the PDCCH on the scheduling cell includes a carrier indication field to indicate which serving cell is currently scheduled.
  • the UE monitors the PDCCH on the scheduling carrier during the active time of the PCell and the SCell.
  • each serving cell can use the same timing advance (TA: timing advance) value in the uplink.
  • TA timing advance
  • the UE maintains a time alignment timer (TAT), and when the timer is running, it considers that the UE is in an uplink synchronization state in each serving cell and the base station, and can normally perform uplink and downlink data transmission/reception during the DRX active time.
  • Version 11 also supports inter-band CA and Frequency selective repeater on the uplink.
  • Each serving cell can use different thresholds on the uplink, using the same threshold.
  • the serving cell belongs to the same group (TAG: TA group); the UE maintains a TAT for each TAG, and when the TAT is running, it considers that the UE is in an uplink synchronization state in each serving cell and the base station of the TAG, in the DRX activity.
  • the time can normally perform uplink and downlink data transmission/reception.
  • For a TAG that does not include a PCell if the TAT is not running, the UE can perform normal downlink data reception in each serving cell of the TAG, but cannot perform normal uplink data transmission.
  • the TAT corresponding to PCell or SCell refers to the TAT corresponding to the TAG where PCell or SCell is located.
  • the configuring, by the base station, the E-PDCCH for the serving cell serving the user equipment may include:
  • the base station configures the E-PDCCH on the primary serving cell or the scheduling cell.
  • the LTE-A CA supports non-cross carrier scheduling and cross carrier scheduling.
  • the UE is in PCell and SCell.
  • the PDCCH is monitored on the serving cell during the activity period.
  • the S Cell can be configured to be scheduled by the PCell or another SCell; the PCell can only be scheduled by itself and cannot be scheduled across carriers.
  • the serving cell that sends the control signaling is called a Scheduling cell, and the scheduling cell indicates to the UE which cell is currently scheduled.
  • the base station can configure the E-PDCCH on the PCell or the scheduling cell.
  • the base station sends the resource configuration information of the E-PDCCH to the user equipment, so that the user equipment monitors the E-PDCCH according to the resource configuration information.
  • the sending, by the base station, the resource configuration information of the E-PDCCH to the user equipment includes:
  • the base station sends, to the user equipment, information about the serving cell in which the E-PDCCH is configured, and the information may include at least one of the following;
  • a secondary serving cell index or a physical cell identifier of the secondary serving cell or a secondary serving cell index or a physical cell identifier of the serving cell corresponding to the new carrier type.
  • the configuration information includes at least one of the following information:
  • the E-PDCCH resource allocation type such as a localized or distributed virtual resource block (Virtual Resource Block), a resource block number, and the like, is currently supported by the 3GPP protocol TS 36.213.
  • Centralized resource allocation refers to VRB continuous resource allocation mode; distributed resource allocation refers to VRB non-continuous resource allocation mode.
  • Type 0 is a centralized resource allocation mode. It uses a bitmap to indicate which Resource Block Groups (RBGs) are assigned to UEs.
  • RBGs represent a group of consecutive VRBs.
  • Type 1 is a centralized resource allocation mode, and some of the VRBs are assigned to the UE from a group of RBG subsets.
  • Type 2 indicates that a group of consecutive or non-contiguous VRBs are allocated to the UE.
  • Corresponding resource block (RB) allocation refers to the number of resource blocks allocated according to the corresponding resource allocation type
  • a subframe mode configured to indicate in which subframes the base station transmits the E-PDCCH
  • a resource start position of the E-PDCCH configured to indicate in which subframes the base station transmits the E-PDCCH
  • a demodulation reference signal (DMRS) configuration configured to indicate a reference signal used for demodulating the E-PDCCH
  • PUCCH Physical uplink control channel
  • HQQ Hybrid Automatic Repeat Request
  • the E-PDCCH and the PDSCH resource multiplexing manner refer to a manner in which the E-PDCCH and the PDSCH are frequency-division multiplexed by FDM, time division multiplexed TDM, or code division multiplexed CDM in a subframe;
  • the method for the base station to notify the UE of the configuration information of the E-PDCCH includes: the base station adopts Radio Resource Control (RRC) signaling, or media access control (Media Access Control, The MAC address signaling, or PDCCH control signaling, notifies the UE of the configuration information of the E-PDCCH.
  • RRC Radio Resource Control
  • Media Access Control Media Access Control
  • the MAC address signaling, or PDCCH control signaling notifies the UE of the configuration information of the E-PDCCH.
  • the method for the base station to notify the UE of the E-PDCCH configuration information by using the radio resource control (RRC) signaling includes: the base station in the cell secondary serving cell radio resource dedicated configuration or the secondary serving cell radio resource common
  • the E-PDCCH configuration information is included in the configuration or radio resource-specific configuration or the secondary-cell physical-specific configuration or the physical-specific configuration, and the base station sends the cell to the UE by using a radio resource control reconfiguration message.
  • the method further includes:
  • the base station sends scheduling information to the user equipment by using the E-PDCCH on the first subframe of the frame structure, where the first subframe includes part or all of the subframe structure.
  • the method further includes:
  • the base station When the first subframe is a partial subframe of the frame structure, the base station sends the scheduling information to the user equipment by using the PDCCH in the second subframe of the frame structure, where the second subframe is a frame structure except the first subframe. The remaining sub-frames.
  • the method further includes:
  • the base station identifies the E-PDCCH on the first subframe by using a bitmap manner.
  • the method may further include
  • the base station corresponding to the TAT transport of the serving cell in which the E-PDCCH is configured Transmitting, by the E-PDCCH of the serving cell, scheduling information to the user equipment; or
  • the base station When the TAT corresponding to the serving cell in which the E-PDCCH is configured is not running, the base station sends scheduling information to the user equipment via a PDCCH of the serving cell.
  • the E-PDCCH and the PDCCH are used to carry resource information allocated for the UE, and the UE monitors the PDCCH and the E-PDCCH at the DRX active time, and according to the UE identifier indicated by the PDCCH and the E-PDCCH, such as a cell-wireless network temporary identifier.
  • C-RNTI Cell-wireless network temporary identifier
  • the method further includes: sending, by the base station, first scheduling information to the user equipment by using a PDCCH of the primary serving cell;
  • the first scheduling information is used to schedule at least one of the following messages:
  • the second scheduling information may not include system information, paging, or multimedia broadcast multicast service single frequency network messages.
  • the method may further include: the base station sending, by using the PDCCH of the primary serving cell, the PDCCH to the user equipment, in a period of determining that the user equipment radio link failure to the radio resource control connection re-establishment is successful Scheduling information.
  • the method may further include:
  • the base station When the serving cell is an interfered cell, and a quiet subframe is configured in the interfering cell, the base station sends an E-PDCCH through the serving cell on the silent subframe and/or the non-silent subframe.
  • the user equipment sends scheduling information, where the quiet subframe is a subframe in which the interfering cell does not send a PDCCH or transmits a PDCCH at a lower power.
  • the method may further include:
  • the base station When the serving cell is an interfering cell, and the muting subframe is configured in the interfering cell, the base station is in the quiet subframe and/or the non-silent subframe, via the serving cell
  • the E-PDCCH sends scheduling information to the user equipment, where the quiet subframe is a subframe in which the interfering cell does not send a PDCCH or transmits a PDCCH at a lower power.
  • the E-PDCCH resource configuration information is notified to the UE by the base station, so that the UE monitors the E-PDCCH according to the resource configuration information, and does not need the UE to directly monitor the PDCCH and the E-PDCCH, thereby reducing the number of blind detections of the UE.
  • a schematic flowchart of an E-PDCCH enabling method on a UE side may include the following steps:
  • the user equipment receives the resource configuration information of the enhanced physical downlink control channel E-PDCCH configured by the base station for the serving cell of the user equipment, where the serving cell is at least one of the following: a primary serving cell and a secondary service The cell, or the new service type corresponding to the new carrier type.
  • the user equipment receiving the resource configuration information of the E-PDCCH configured by the base station for the serving cell of the user equipment may further include:
  • the user equipment receives the serving cell that is configured by the base station and configured with the E-PDCCH.
  • the UE may monitor the E in the serving cell configured with the E-PDCCH or the serving cell associated with the serving cell configured with the E-PDCCH by receiving the serving cell configured by the base station and configuring the E-PDCCH. - PDCCH.
  • the user equipment receiving the resource configuration information of the E-PDCCH configured by the base station for the serving cell of the user equipment may further include:
  • the user equipment receives resource configuration information of the E-PDCCH configured by the base station on the primary serving cell or the scheduling cell.
  • the configuration information includes at least one of the following information:
  • the UE may pass radio resource control (RRC) signaling, or media Access control (MAC) signaling, or PDCCH control signaling, receiving the transmission of the base station
  • RRC radio resource control
  • MAC media Access control
  • PDCCH PDCCH control
  • S202 The UE monitors the E-PDCCH according to the resource configuration information.
  • the user equipment monitors the information according to the resource configuration information.
  • the E-PDCCH may include:
  • the user equipment When the user equipment is in a discontinuous reception of the DRX activity time, and the time adjustment timer TAT corresponding to the serving cell is running, the user equipment receives the location that the base station sends to the user equipment on the serving cell. Resource configuration information of the E-PDCCH; or
  • the user equipment When the user equipment is in the DRX active time, and the TAT corresponding to the primary timing advance group TAG is running, the user equipment receives the base station in the primary serving cell, and the serving cell corresponding to the primary TAG Resource configuration information of the E-PDCCH sent by the user equipment; or
  • the user equipment When the user equipment is in the DRX active time, the user equipment receives the resource configuration information of the E-PDCCH that is sent by the base station to the user equipment on the serving cell corresponding to the secondary timing advance group TAG;
  • the serving cell corresponding to the primary TAG includes the primary serving cell, the secondary serving cell, or a serving cell corresponding to the new carrier type;
  • the serving cell corresponding to the secondary TAG includes the secondary serving cell or a serving cell corresponding to the new carrier type.
  • the UE listening to the E-PDCCH according to the resource configuration information may include:
  • the user equipment When the TAT corresponding to the serving cell in which the E-PDCCH is configured is not running, the user equipment receives scheduling information that is sent by the base station via the physical downlink control channel PDCCH of the serving cell.
  • the method further includes: The user equipment listens to the E-PDCCH in a first subframe of a frame structure sent by the base station, where the first subframe includes part or all subframes of the frame structure.
  • the method further includes:
  • the user equipment monitors the PDCCH in the second subframe of the frame structure sent by the base station, where the second subframe is the remaining subframes except the first subframe.
  • the method further includes:
  • the user equipment identifies the E-PDCCH by means of a bitmap.
  • the method may further include:
  • the first scheduling information is used to schedule at least one of the following messages:
  • the second scheduling information may not include system information, paging, or multimedia broadcast multicast service single frequency network messages.
  • the method may further include:
  • the method further includes:
  • the user equipment receives, on the silent subframe and/or the non-silent subframe, the base station by using the serving cell.
  • the method may further include: When the serving cell is an interfering cell, and the muting subframe is configured in the interfering cell, the user equipment receives the base station via the serving cell on the silent subframe and/or the non-silent subframe.
  • the UE monitors the E-PDCCH according to the resource configuration information by receiving the resource configuration information of the E-PDCCH configured by the base station for the serving cell of the UE, and does not require the UE to directly monitor the PDCCH and the E-PDCCH simultaneously, which is reduced. The number of blind detections by the UE.
  • a PCell and a SCell are configured for the UE, which is also applicable to the case where the base station configures more SCells for the UE.
  • the base station may select which serving cell to configure the E-PDCCH according to the actual conditions such as the load, the interference, and the traffic of the serving cell, and may include:
  • the base station configures the E-PDCCH for the serving cell whose load is greater than the preset threshold according to the load of the serving cell.
  • the base station may preset a load threshold, and the preset load threshold may be a percentage of a physical resource block occupied by a specific serving cell in a specified time period, and the base station may perform a downlink total physical resource according to the serving cell in a certain period of time.
  • the block PRB occupancy determines the load of the cell.
  • the base station determines that the load of the serving cell is greater than a preset load threshold, the base station configures the E-PDCCH for the serving cell.
  • the E-PDCCH is configured for the serving cell whose number of users is greater than a preset threshold.
  • the base station may preset a threshold of the number of users, and the preset threshold of the number of users may be the number of users whose specific serving cell is in a connected state and has service activity within a specified time period, and the base station may be in the serving cell according to a certain period of time.
  • the base station configures the E-PDCCH for the serving cell.
  • the E-PDCCH is configured for the serving cell whose channel quality is smaller than the channel quality required by the UE according to the channel quality of the serving cell and the channel quality required by the UE.
  • the base station may preset a channel quality indicator (CQI) threshold of a specific serving cell in a specified time period, and the base station determines according to the CQI of the specific serving cell reported by the UE, when the CQI is smaller than a preset At the CQI threshold, the base station configures the E-PDCCH for the serving cell.
  • CQI channel quality indicator
  • the base station determines that the E-PDCCH needs to be configured for the SCell according to the foregoing method, if the PCell and the SCell use different TA values, the base station configures the E-time for the SCell when the UE is in the DRX active time and the TMT corresponding to the SCell is running.
  • PDCCH if the PCell and the SCell use the same TA value, the base station configures the E-PDCCH for the SCell when the UE is in the DRX active time and the TAT of the TAG group in which the PCell and the SCell are located.
  • the base station may send a radio resource control reconfiguration message to the UE when the SCell configuration is added or modified, including resource configuration information of the E-PDCCH.
  • the base station may notify the UE of the configuration information of the E-PDCCH by using the RRC signaling, or the MAC signaling, or the PDCCH control signaling.
  • the E-PDCCH resource configuration information may be included in the Radio Resource Config Dedicated SCell. In the cell of the radio resource Config Common SCell or in the cell of the Radio Resource Config Dedicated or the cell of the Physical Config Dedicated SCell Medium or physical Config Dedicated cells.
  • the initial state of the SCell is deactivated.
  • the state of the SCell remains the original state, which is activated or deactivated.
  • the UE does not monitor the PDCCH on the deactivated SCell, does not receive the downlink data on the physical downlink shared channel (PDSCH), and does not send the physical uplink shared channel (PUSCH) / channel state information (Channel State Information, Call CSI) / Sounding Reference Signal (SRS).
  • the base station may send activation/deactivation signaling to the UE through the medium access control layer control unit, and after receiving the activation/deactivation signaling of the base station, the UE activates the S Cell or deactivates the S Cell.
  • the base station After the base station configures the E-PDCCH for the SCell, and the SCell is in an active state, the base station is During the TAT operation corresponding to the SCell, the scheduling information is transmitted to the UE via the E-PDCCH of the SCell. When the TAT corresponding to the SCell is not running, the scheduling information is transmitted to the UE via the resource location of the PDCCH of the SCell. And the UE monitors the E-PDCCH on the SCell to receive scheduling information sent by the base station via the E-PDCCH of the SCell. When the TBT corresponding to the SCell is not running, the UE is in the TAT. The PDCCH is monitored on the SCell to receive scheduling information sent by the base station via the PDCCH of the SCell.
  • the resource configuration information of the E-PDCCH configured by the base station for the SCell may include resource location information of the time-frequency domain resource occupied by the E-PDCCH, for example, may include the time occupied by the E-PDCCH.
  • the frequency domain range of the E-PDCCH is taken as an example.
  • the frequency domain range of the time-frequency domain resource occupied by the E-PDCCH of the SCell may be continuous or discontinuous.
  • the base station may determine a specific frequency position of the E-PDCCH in the time-frequency domain resource by indicating a starting position of the frequency domain range; when the E-PDCCH occupies
  • the base station may determine the specific frequency position of the E-PDCCH in the time-frequency domain resource by indicating the start position of the frequency domain range and the frequency domain interval.
  • the base station may indicate the start position of the E-PDCCH through the PDCCH, and the UE obtains the start position of the E-PDCCH by monitoring the PDCCH; the base station may also indicate the start position of the E-PDCCH by using signaling or a protocol, and the UE receives the signaling. Or the starting position of the E-PDCCH when the protocol is obtained.
  • the frequency domain range information of the E-PDCCH transmitted by the UE through the base station can be blindly detected only in the frequency domain, thereby further reducing the number of blind detections of the UE.
  • the base station After the E-PDCCH is reconfigured for the SCell based on the change of the load, the interference, the traffic, and the like of the SCell, the base station includes deleting the E-PDCCH configuration, modifying the E-PDCCH resource mapping, and starting the resource, and then using the foregoing method to notify The UE then transmits scheduling information using the reconfigured E-PDCCH.
  • the base station in this embodiment can improve the SCell throughput and scheduling efficiency by configuring the E-PDCCH on the SCell, and solve the problem that the traditional PDCCH control domain of the SCell is interfered.
  • a PCell and a SCell are configured on the base station.
  • the base station is configured with more SCells.
  • the base station selects an E-PDCCH for the PCell according to actual conditions such as load, interference, and traffic of the serving cell. If the PCell and the SCell use different TA values, the base station is in the DRX active time of the UE, and the TBT corresponding to the PCell. The E-PDCCH is configured for the PCell during the operation. If the PCell and the SCell use the same TA value, the base station configures the E-PDCCH for the PCell when the UE is in the DRX active time and the TAT of the TAG group where the PCell and the PCell are located.
  • the base station may send a radio resource control reconfiguration message to the UE when the PCell configuration is added or modified, including resource configuration information of the E-PDCCH.
  • the base station may notify the UE of the configuration information of the E-PDCCH by using the RRC signaling, or the MAC signaling, or the PDCCH control signaling.
  • the resource configuration information of the E-PDCCH may be included in the radio resource configuration PCell ( Radio Resource Config Dedicated PCell). In the cell of the radio resource Config Common PCell or in the cell of the Radio Resource Config Dedicated or the physical configuration of the PC Config Dedicated PCell In the cell of the meta-physical configuration line (Physical Config Dedicated).
  • the initial state of the PCell is activated.
  • the state of the PCell remains the original state and is activated.
  • the base station configures the E-PDCCH for the PCell, and after the PCell is in the active state, the base station sends scheduling information to the UE via the E-PDCCH of the PCell during the TAT operation of the PCell; When the TAT is not running, the scheduling information is transmitted to the UE via the resource location of the PDCCH of the PCell. And the UE monitors the E-PDCCH on the PCell to receive scheduling information sent by the base station via the E-PDCCH of the PCell; when the TBT corresponding to the PCell is not running, the UE is in the TAT operation.
  • the base station monitors the PDCCH on the PCell to receive a scheduling signal sent by the base station via the PDCCH of the PCell Further, the base station sends the first scheduling information to the UE via the PDCCH of the PCell; the base station sends the second scheduling information to the UE via the E-PDCCH of the PCell;
  • the first scheduling information is used to schedule at least one of the following messages:
  • the second scheduling information may not include system information, paging, or multimedia broadcast multicast service single frequency network messages.
  • the base station sends the system information, the paging, the multimedia broadcast multicast service single frequency network message to the UE via the PDCCH of the PCell, and sends the system information, the paging, the multimedia broadcast multicast service list to the UE via the E-PDCCH of the PCell.
  • Scheduling information of the frequency network message the UE receives the system information, the paging, the multimedia broadcast multicast service single frequency network message sent by the base station via the PDCCH of the PCell, and the receiving base station transmits the system information, paging, and multimedia via the E-PDCCH of the PCell. Broadcasting multicast service scheduling information other than single frequency network messages.
  • the base station sends scheduling information to the UE via the PDCCH of the PCell after the UE radio link fails the RLF to the RRC connection re-establishment success period; the time period after the radio link fails to the RRC connection re-establishment success.
  • the scheduling information transmitted by the base station via the PDCCH of the PCell is received in order to re-enter the RRC connected state.
  • the resource configuration information of the E-PDCCH configured by the base station for the PCell may include the resource location information of the time-frequency domain resource occupied by the E-PDCCH, which is occupied by the E-PDCCH in this embodiment.
  • the time domain range of the time-frequency domain resource is described as an example.
  • the time domain resource location in the time-frequency domain resource location is in a subframe, using at least one subframe mode, for at least one radio frame, (one radio frame includes 10 subframes), and the base station may be in a partial subframe Or transmitting the scheduling information to the UE by using the E-PDCCH on all subframes, and transmitting the scheduling information to the UE by using the PDCCH on the subframes other than the partial subframe, and the base station may use the bitmap image (bitmap) to indicate which subframes are used.
  • E-PDCCH bitmap image
  • the base station sends scheduling information to the UE in the subframe represented by the white box via the E-PDCCH, and the UE monitors the E-PDCCH in the subframe represented by the white box to receive the base station via the E.
  • - PDCCH sends scheduling information to the UE; in black
  • the PDCCH is monitored in the subframe represented by the frame, so that the receiving base station sends scheduling information to the UE via the PDCCH.
  • the subframe mode may use an Almost blank subframe (ABS) subframe mode of the interfering cell. In such a subframe mode, the interfering cell transmits only the cell-specific reference signal and the synchronization signal without transmitting the PDCCH.
  • ABS Almost blank subframe
  • the subframe mode can be configured separately or with a time domain measurement subframe restriction configuration, including a PCell measurement subframe mode and a neighbor measurement subframe mode.
  • the base station when the PCell is an interfered cell, and the interfering cell is configured with a silent subframe, the base station sends a scheduling to the UE via the E-PDCCH of the PCell on the silent subframe and/or the non-silent subframe. And the UE sends the scheduling information to the UE by using the E-PDCCH of the PCell, where the UE is not transmitting the PDCCH or the UE by using the E-PDCCH of the PCell in the quiet subframe and/or the non-silent subframe.
  • the subframe of the PDCCH is transmitted at a lower power.
  • the base station When the PCell is an interfering cell, and the quiet subframe is configured in the PCell, the base station sends scheduling information to the UE via the E-PDCCH of the PCell on the quiet subframe and/or the non-silent subframe, where the UE is located. And the scheduling information that is sent by the base station to the UE by using the E-PDCCH of the PCell, where the quiet subframe is that the PCell does not send the PDCCH or sends the PDCCH with a lower power, on the quiet subframe and/or the non-silent subframe. Subframe.
  • the base station After the E-PDCCH is reconfigured for the PCell according to the configuration policy, the base station includes the E-PDCCH configuration, the E-PDCCH resource mapping, the resource start location, and the like, and then the E-PDCCH configuration is modified according to the configuration policy.
  • the UE is notified by the above method, and then the scheduling information is transmitted using the reconfigured E-PDCCH.
  • the method for enabling the physical downlink control channel provided by the embodiment of the present invention can improve the PCell throughput and scheduling efficiency, reduce the number of blind detections of the UE, and configure the E-PDCCH by using a specific subframe in the interfering cell or the interfered cell.
  • the interference of the interfering cell to the interfered cell can be effectively reduced.
  • the macro base station (Macro eNB) and the low power node (Low Power Node) are the non-co-site aggregation of the carrier provided by the remote radio head (RRH), see Figure 4.
  • RRH remote radio head
  • the macro base station and the LPN provide the carriers fl and f2, and the UE that accesses the macro base station (called the Macro UE), fl is the PCell, and f2 is the SCell; the UE accessing the LPN is called the Pico UE, and f2 is the PCell.
  • fl is SCell.
  • the base station may notify the UE of the E-PDCCH configuration information when configuring/reconfiguring the cross-carrier scheduling for the SCell, and indicate to the UE whether to use the E-PDCCH or the PDCCH in the scheduling cell.
  • the UE receives the E-PDCCH configuration information, and monitors the E-PDCCH in the scheduling cell according to the Scheduling Cell Information (SCI) and the Carrier Indicator Field (CIF) information in the cross-carrier scheduling configuration. .
  • SCI Scheduling Cell Information
  • CIF Carrier Indicator Field
  • Embodiment 1 of the present invention may be used.
  • the E-PDCCH is configured in the SCell and the legacy PDCCH is used in the PCell.
  • the UE can listen to the E-PDCCH in the SCell to avoid interference, and the legacy PDCCH is used in the PCell.
  • an embodiment of the present invention provides a base station 60, which is applied to the method shown in FIG. 1, and is shown in FIG. 6-7.
  • the configuration unit 602 is configured to send the resource configuration information of the E-PDCCH configured by the configuration unit to the user equipment, so that the user equipment monitors the E-PDCCH according to the resource configuration information.
  • the serving cell is at least one of the following cells:
  • a serving cell corresponding to the primary serving cell, the secondary serving cell, or the new carrier type
  • a sending unit 601 configured to send, to the user equipment, resource configuration information of the E-PDCCH configured by the configuration unit, to enable the user
  • the device monitors the E-PDCCH according to the resource configuration information.
  • the sending unit 601 is further configured to send scheduling information to the user equipment by using an E-PDCCH in a first subframe of the frame structure, where the first subframe includes a part of a frame structure or All subframes.
  • the sending unit 601 is further configured to: when the first subframe is a partial subframe of a frame structure, use the PDCCH to send scheduling information to the user equipment in the second subframe of the frame structure, where the second subframe is a frame structure. The remaining subframes except the first subframe.
  • the sending unit 601 may include:
  • the first determining subunit 6011 is configured to determine whether the user equipment is in a discontinuous reception DRX activity time
  • the second determining sub-unit 6012 is configured to determine whether the time adjustment timer TAT corresponding to the serving cell is running, and/or determine whether the TAT corresponding to the primary timing advance group TAG is running;
  • a sending subunit 6013 configured to: when the first determining subunit 6011 determines that the user equipment is in a DRX active time, and the second determining subunit 6012 determines that the TAT corresponding to the serving cell is running, in the service Sending the E-PDCCH to the user equipment on a cell; or
  • the sending subunit 6013 is configured to: when the first determining subunit 6011 determines that the user equipment is in a DRX active time, and the second determining subunit 6012 determines that the TAT corresponding to the main TAG is running, Transmitting the E-PDCCH to the user equipment on the serving cell, and the serving cell corresponding to the primary TAG; or the sending subunit 6013, configured to: when the first determining subunit 6011: The user equipment is in the DRX active time, and the E-PDCCH is sent to the user equipment on the serving cell corresponding to the secondary TAG.
  • the serving cell corresponding to the primary TAG includes the primary serving cell, or the secondary serving cell, or a serving cell corresponding to the new carrier type;
  • the serving cell corresponding to the secondary TAG includes the secondary serving cell or a serving cell corresponding to the new carrier type.
  • the configuration unit is further configured to: when the cross-carrier scheduling is configured, configure the E-PDCCH on the primary serving cell or the scheduling cell.
  • the configuration information includes at least one of the following information:
  • the sending unit 601 can also perform multiple actions, and either one sending unit can be used to complete all the required actions, or multiple sending units can be used to complete different actions.
  • the sending unit 601 is further configured to: send, to the user equipment, information about the service cell in which the E-PDCCH is configured, where the information of the serving cell configured with the E-PDCCH is at least one of the following :
  • a secondary serving cell index or a physical cell identifier of the secondary serving cell or a secondary serving cell index or a physical cell identifier of the serving cell corresponding to the new carrier type.
  • the sending unit 601 is further configured to:
  • the scheduling information is sent to the user equipment by using the E-PDCCH of the serving cell;
  • the sending unit 601 is further configured to:
  • the first scheduling information is used to schedule at least one of the following messages:
  • the second scheduling information may not include system information, paging, or multimedia broadcast multicast service single frequency network messages.
  • the sending unit 601 is further configured to send scheduling information to the user equipment via a PDCCH of the primary serving cell in a period of determining that the user equipment radio link failure to the radio resource control connection re-establishment is successful.
  • the sending unit 601 is further configured to:
  • the user equipment When the serving cell is an interfered cell, and a quiet subframe is configured in the interfering cell, the user equipment is sent to the user equipment via the E-PDCCH of the serving cell on the silent subframe and/or the non-silent subframe.
  • the scheduling information is sent, where the quiet subframe is a subframe in which the interfering cell does not send a PDCCH or transmits a PDCCH at a lower power.
  • the sending unit 601 is further configured to:
  • the user is sent to the user via the E-PDCCH of the serving cell on the silent subframe and/or the non-silent subframe.
  • the device sends scheduling information, where the quiet subframe is a subframe in which the interfering cell does not send a PDCCH or transmits a PDCCH at a lower power.
  • the base station provided in this embodiment may be used to perform the operations of the base station in the foregoing method embodiment.
  • the configuration unit 602 may perform 101
  • the sending unit 601 may perform 102.
  • the base station provided by the embodiment of the present invention informs the UE of the E-PDCCH resource configuration information, so that the UE monitors the E-PDCCH according to the resource configuration information, and does not need the UE to directly monitor the PDCCH and the E-PDCCH, and reduces the UE.
  • the number of blind checks are used to determine whether the E-PDCCH is E-PDCCH is E-PDCCH.
  • an embodiment of the present invention further provides a user equipment 80, which is applied to the method shown in FIG. 2.
  • the user equipment 80 includes
  • the receiving unit 801 is configured to receive resource configuration information of the enhanced physical downlink control channel E-PDCCH configured by the base station for the serving cell of the user equipment;
  • the serving cell is at least one of the following cells:
  • the receiving unit is further configured to monitor the E-PDCCH in a first subframe of a frame structure sent by the base station, where the first subframe includes part or all subframes of the frame structure.
  • the receiving unit is further configured to: when the first subframe is a partial subframe of the frame structure, monitor the PDCCH in a second subframe of the frame structure sent by the base station, where the second subframe is a frame structure except the first subframe. The remaining subframes outside the frame.
  • the receiving unit 801 is further configured to:
  • the serving cell corresponding to the primary TAG includes the primary serving cell, the secondary serving cell, or a serving cell corresponding to the new carrier type;
  • the serving cell corresponding to the secondary TAG includes the secondary serving cell or a serving cell corresponding to the new carrier type.
  • the receiving unit 801 is further configured to: receive, by the base station, information about the serving cell configured with the E-PDCCH, where the service cell of the E-PDCCH is configured
  • the information is at least one of the following:
  • a secondary serving cell index or a physical cell identifier of the secondary serving cell or a secondary serving cell index or a physical cell identifier of the serving cell corresponding to the new carrier type.
  • the configuration information includes at least one of the following information:
  • the E-PD CCH resource allocation type and the corresponding resource block allocation, the subframe mode, the resource start position of the E-PDCCH, the demodulation reference signal configuration, the physical uplink control channel feedback configuration information, the E-PDCCH, and the PDSCH resource complex The resource mapping mode of the mode, E-PDCCH and antenna port.
  • the monitoring unit 802 is configured to monitor the E-PDCCH according to the resource configuration information received by the receiving unit.
  • the receiving unit 801 can also perform multiple actions, and can adopt one.
  • the receiving unit 801 performs all the required actions, and the plurality of receiving units 801 can also be used to perform different actions.
  • the receiving unit 801 is further configured to: receive, by the base station, a specific component carrier information notification of the E-PDCCH;
  • the receiving unit 801 is further configured to:
  • the receiving unit is further configured to: receive, by the first base station, the first scheduling signal sent by the base station by using a PDCCH of the primary serving cell, to receive the E- Second scheduling information sent by the PDCCH;
  • the first scheduling information is used to schedule at least one of the following messages:
  • the second scheduling information may not include system information, paging, or multimedia broadcast multicast service single frequency network messages.
  • the receiving unit 801 is further configured to:
  • the scheduling information sent by the base station via the PDCCH of the primary serving cell is received during a period in which the radio link fails to the radio resource control connection re-establishment success.
  • the receiving unit 801 is further configured to:
  • the resource configuration information of the E-PDCCH configured by the base station on the primary serving cell or the scheduling cell is received.
  • the receiving unit 801 is further configured to:
  • the serving cell is an interfered cell
  • a quiet subframe is configured in the interfering cell
  • receiving, by the serving, the base station by using the service on the silent subframe and/or the non-silent subframe The scheduling information sent by the E-PDCCH of the cell, where the quiet subframe is a subframe in which the interfering cell does not transmit a PDCCH or transmits a PDCCH at a lower power.
  • the receiving unit 801 is further configured to:
  • the serving cell is an interfering cell
  • the muting subframe is configured in the interfering cell
  • receiving, on the silent subframe and/or the non-silent subframe, the E-PDCCH of the base station via the serving cell The scheduled scheduling information, where the quiet subframe is a subframe in which the interfering cell does not transmit a PDCCH or transmits a PDCCH at a lower power.
  • the user equipment 80 provided in this embodiment may be used to perform the action of the user equipment in the foregoing method embodiment.
  • the receiving unit 801 may perform 201
  • the listening unit 802 may perform 202.
  • the user equipment 80 provided by the embodiment of the present invention receives the resource configuration information of the E-PDCCH configured by the base station for the serving cell of the user equipment 80, so as to monitor the E-PDCCH according to the resource configuration information, and does not need the user equipment.
  • the PDCCH and the E-PDCCH are always monitored at the same time, and the number of blind detections of the user equipment 80 is reduced.
  • the embodiment of the present invention further provides an E-PDCCH enabling system, as shown in FIG. 9, including
  • the base station 60 is configured to configure an enhanced physical downlink control channel E-PDCCH for the serving cell serving the user equipment, and send the resource configuration information of the E-PDCCH to the user equipment, so that the user equipment configures according to the resource
  • the user equipment 80 is configured to receive, by the user equipment, resource configuration information of the enhanced physical downlink control channel E-PDCCH configured by the base station for the serving cell of the user equipment, and the monitoring device according to the resource configuration information.
  • E-PDCCH E-PDCCH
  • the serving cell is at least one of the following cells:
  • a primary serving cell, a secondary serving cell, or a serving cell corresponding to a new carrier type is a primary serving cell, a secondary serving cell, or a serving cell corresponding to a new carrier type.
  • the foregoing base station 60 may be the base station in the foregoing device embodiment, where the user equipment 80 may be the user equipment in the foregoing apparatus embodiment is the user equipment 80 through the base station 60.
  • the serving cell configures the E-PDCCH and sends the resource configuration information of the E-PDCCH to the user equipment 80, so that the user equipment 80 listens to the E-PDCCH according to the resource configuration information, and does not need the user equipment 80.
  • the PDCCH and the E-PDCCH are directly monitored at the same time, and the number of blind detections by the user equipment 80 is reduced.

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Abstract

本发明实施例公开一种物理下行控制信道的使能方法、设备和系统。涉及通信领域,应用于物理下行控制信道的配置和使用,提高了物理下行控制信道的容量,减少了UE的盲检次数。本发明实施例的方法包括:基站为用户设备的服务小区配置增强物理下行控制信道E-PDCCH;基站向所述用户设备发送所述E-PDCCH的资源配置信息,以使所述用户设备根据所述资源配置信息监听所述E-PDCCH;其中,所述服务小区为以下至少一种小区:主服务小区、辅服务小区、或新载波类型对应的服务小区。

Description

一种增强型物理下行控制信道的使能方法、 设备及系统 本申请要求于 2012 年 6 月 1 日提交中国专利局、 申请号为 CN 201210179027. 2 , 发明名称为 "一种增强型物理下行控制信道的使能方法、 设备及系统", 和 2013 年 5 月 9 日提交中国专利局、 申请号为 CN 201310168977. X, 发明名称为 "一种增强型物理下行控制信道的使能方法、 设备及系统" 的中国专利申请的优先权, 其全部内容通过引用结合在本申 请中。 技术领域
本发明涉及通信领域,尤其涉及一种物理下行控制信道的使能方 法、 设备和系统。 背景技术
长期演进 (Long Term Evolution , 筒称 LTE ) 系统是 3G的演进, 它改进并增强了 3G的空中接入技术。 在 20MHz频谱带宽下能够提供下 行 1 OOMbit/s与上行 5 OMbit/s的峰值速率。 在对其改进的高级长期演进 LTE-A系统中, 引入了载波聚合( Carrier Aggregation , 筒称 CA ) , 在 下行和上行分别可以支持 5个分量载波 ( component carrier, 或称为成 员载波) , 以提高系统的吞吐量。
在多输入多输出天线 ( Multiple-Input Multiple-Out-put , 筒称
ΜΙΜΟ )、协调多点发送 /接收( coordinated multiple points ,筒称 COMP )、 扩展载波( Extension Carrier,筒称 EC )、异构网载波聚合( Heterogeneous net, 筒称 Hetnet CA ) 等场景, 存在 PDCCH容量受限、 阻塞、 干扰等 问题, 通过增加增强型下行物理控制信道( Enhanced Physical downlink control channel , 筒称 E-PDCCH ) 能够解决上述问题。 上述 EC也可以 称为新载波类型 (New Carrier Type , 筒称 NCT ) , 其可以与现有 PCell 或 SCell相关联, 为非后向兼容载波, 该 CA的下行定时与其所关联的服 务小区可以同步或者不同步。
但是现有技术还没有讨论基站如何使用上述 E-PDCCH。 发明内容
本发明的实施例提供一种物理下行控制信道的使能方法、 设备和 系统, 基站将 E-PDCCH的资源配置信息通知 UE, 使 UE根据所述资 源配置信息监听所述 E-PDCCH。
为了实现上述目的, 本发明一方面提供一种物理下行控制信道的 使能方法, 包括:
基站为服务于用户设备的服务小区配置增强物理下行控制信道 E-PDCCH;
所述基站向所述用户设备发送所述 E-PDCCH 的资源配置信 息, 以
使所述用户设备根据所述资源配置信息监听所述 E-PDCCH;
其中, 所述服务小区为以下至少一种小区:
主服务小区、 辅服务小区、 或新载波类型对应的服务小区。
本发明另一方面提供一种物理下行控制信道的使能方法, 包括: 用户设备接收基站为所述用户设备的服务小区所配置的增强物 理下行控制信道 E-PDCCH的资源配置信息;
所述用户设备根据所述资源配置信息监听所述 E-PDCCH;
其中, 所述服务小区为以下至少一种小区:
主服务小区、 辅服务小区、 或新载波类型对应的服务小区。 本发明另一方面提供一种基站, 包括:
配置单元, 用于为服务于用户设备的服务小区配置增强物理下行 控制信道 E-PDCCH;
发送单元, 用于向所述用户设备发送所述配置单元配置的所述 E-PDCCH 的资源配置信息, 以使所述用户设备根据所述资源配置信 息监听所述 E-PDCCH;
其中, 所述服务小区为以下至少一种小区:
主服务小区、 辅服务小区、 或新载波类型对应的服务小区。
本发明另一方面提供一种用户设备, 包括:
接收单元, 用于接收基站为所述用户设备的服务小区所配置的增 强物理下行控制信道 E-PDCCH的资源配置信息;
监听单元, 用于根据所述接收单元接收的所述资源配置信息监听 所述 E-PDCCH;
其中, 所述服务小区为以下至少一种小区:
主服务小区、 辅服务小区、 或新载波类型对应的服务小区。 本发明实施例提供的一种物理下行控制信道的使能方法、 基站和 用户设备。 通过基站将 E-PDCCH资源配置信息通知 UE, 使 UE根据 所述资源配置信息监听所述 E-PDCCH。 附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对 实施例或现有技术描述中所需要使用的附图作筒单地介绍, 显而易见地, 下面描述中的附图仅仅是本发明的一些实施例,对于本领域普通技术人员 来讲, 在不付出创造性劳动的前提下, 还可以根据这些附图获得其他的附 图。
图 1 为本发明实施例提供的一种物理下行控制信道的使能方法 流程图;
图 2 为本发明实施例提供的另一种物理下行控制信道的使能方 法流程图;
图 3为一种子帧模式图;
图 4为一种 Hetnet场景下主服务小区对辅服务小区进行跨载波调 度时的 E-PDCCH分配图;
图 5为一种 Hetnet场景下主服务小区不对辅服务小区进行跨载波 调度时的 E-PDCCH分配图;
图 6为本发明实施例提供的一种基站的装置结构图;
图 7为本发明实施例提供的另一种基站的装置结构图;
图 8为本发明实施例提供的一种用户设备的装置结构图; 图 9为本发明实施例提供的一种物理下行控制信道的使能的系统 图。 具体实施方式
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进 行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例, 而不是全部的实施例。基于本发明中的实施例, 本领域普通技术人员在没 有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的 范围。
本发明实施例分别从基站侧和 UE侧进行说明, 并同时对二者的配合 实施例进行说明, 但这并不意味着二者必须配合实施, 实际上, 当 UE与 基站分开实施时, 其也解决了分别在 UE侧、 基站侧上存在的问题, 只是 二者结合使用时, 会获得更好的技术效果。
参见图 1 , 为基站侧 E-PDCCH 的使能方法流程示意图, 如图所 示, 可以包括以下步骤:
S101 : 基站为服务于用户设备的服务小区配置增强物理下行控制 信道 E-PDCCH, 其中, 所述服务小区为以下至少一种小区: 主服务 小区、 辅服务小区、 或新载波类型对应的服务小区。
示例性的, 本实施例还可以包括:
基站在服务于用户设备的服务小区上向所述用户设备发送 E-PDCCH, 可以包括:
当所述基站判断所述用户设备处于不连续接收 DRX活动时间, 且所述服务小区对应的时间调整定时器 TAT 运行时, 所述基站在所 述服务小区上向所述用户设备发送所述 E-PDCCH; 或者,
当所述基站判断所述用户设备处于 DRX活动时间, 且主定时提 前组 TAG对应的 TAT运行时, 所述基站在所述主服务小区, 及所述 主 TAG对应的所述良务小区上向所述用户设备发送所述 E-PDCCH; 或者,
当所述基站判断所述用户设备处于 DRX活动时间, 所述基站在 辅定时提前组 TAG对应的所述服务小区上向所述用户设备发送所述 E-PDCCH; 其中, 所述主 TAG对应的所述服务小区包括所述主服务小区、 或所述辅服务小区、 或所述新载波类型对应的服务小区;
所述辅 TAG对应的所述服务小区包括所述辅服务小区、 或所述 新载波类型对应的服务小区。
其中, 主服务小区 (PCell ) 指用户设备(User Equipment, 筒称
UE )从无线资源连接控制的空闲状态进行随机接入进入无线资源连接 控制的连接状态所在的服务小区; 辅服务小区 ( SCell )指基站在无线 资源控制连接状态通过无线资源控制连接重配置消息为 UE配置的服 务小区, SCell可以为 UE的下行 /上行数据发送 /接收提供更多的无线 资源; 新载波类型对应的小区不能作为独立小区,
引入新载波类型的主要目的是为了降低控制信令开销, 在 3GPP LTE版本 11 ( Rel-11 )拟支持两类新载波类型, 其中一类不提供同步 信号, 下行定时与关联载波同步; 一类提供同步信号和小区特定的参 考信号, 下行定时无需与关联载波同步。
每个 UE至多配置 1个 PCell和 0~4个 SCell , 为 UE节电目的, LTE-A
CA支持不连续接收( Discontinuous Reference , 筒称 DRX )功能和 SCell 激活 /去激活 ( activation/deactivation ) , PCell不能够被去激活。 UE在 去激活的 SCell上不监听物理下行控制信道(Physical downlink control channel , 筒称 PDCCH ) , 不在物理下行共享信道 ( Physical downlink shared channel , 筒称 PDSCH ) 接收下行数据, 不发送信道状态信息 ( Channel State Information , 筒称 CSI ) /探测参考信号 ( Sounding Reference Signal , 筒称 SRS ) ,不在物理上行共享信道 ( Physical uplink shared channel , 筒称 PUSCH )发送上行数据。 在配置了 DRX时, PCell 和所有配置并激活的 S Cell遵循共同的 DRX , 即 UE在 PCell和所有激活 的 SCell的活动时间 ( active time ) 规律相同。 在配置了 DRX时, PCell 和所有配置并激活的 S Cell遵循共同的 DRX , 即 UE在 PCell和所有激活 的 SCell的活动时间 ( active time )规律相同。 在 PDCCH用于承载为 UE 分配的资源信息, 各 UE监听为自身分配的 PDCCH, 并获取资源信息, 能够在该资源信息所指示的时频资源上传输数据。 对于 UE在所聚合的 某个服务小区上的调度, LTE-A CA支持非跨载波调度 ( non cross carrier scheduling )和跨载波调度 ( cross carrier scheduling )调度方式。 对于非跨载波调度方式, UE在 PCell和 SCell的活动期间在本服务小区 上监听 PDCCH。 对于跨载波调度方式, SCell可以被配置为由 PCell或 者另外的 SCell调度; PCell仅能被自己调度, 不能被跨载波调度。 发送 PDCCH的服务小区称为调度小区,调度小区上的 PDCCH包含载波指示 域以指示当前调度的是哪一个服务小区。 UE在 PCell和 SCell的 active time期间在调度载波上监听 PDCCH。
LTE-A版本 10 ( Rel-10 ) 在上行支持频带内载波聚合 ( intra-band CA ) , 各服务小区在上行可以使用相同的定时提前 ( TA : timing advance )值。 UE维护一个时间调整定时器( TAT: time alignment timer ) , 当该定时器运行时, 认为 UE在各服务小区与基站均处于上行同步状 态, 在 DRX活动时间能够正常进行上行和下行数据发送 /接收。 版本 11 ( Rel-11 )在上行也支持频带间载波聚合(Inter-band CA )和频率选择 性中继器( Frequency selective repeater ) , 各服务小区在上行可以使用 不同的 ΤΑ值, 使用相同 ΤΑ值的服务小区属于同一个 ΤΑ组 ( TAG: TA group ) ; UE为每个 TAG维护一个 TAT, 当该 TAT运行时, 认为 UE在 该 TAG的各服务小区与基站均处于上行同步状态, 在 DRX活动时间能 够正常进行上行和下行数据发送 /接收。 对于不包含 PCell的 TAG, 如果 TAT没有运行, 则 UE在该 TAG的各服务小区可以进行正常下行数据接 收, 但不能进行正常上行数据发送。 PCell或 SCell所对应的 TAT指 PCell 或 SCell所在的 TAG所对应的 TAT。
示例性的, 所述基站为服务于用户设备的服务小区配置 E-PDCCH, 可以包括:
在配置了跨载波调度时, 所述基站在所述主服务小区或调度小区 上配置所述 E-PDCCH。
对于 UE在所聚合的某个服务小区上的调度, LTE-A CA支持非 跨载波调度 ( non cross carrier scheduling )和跨载波调度 ( cross carrier scheduling )调度方式。 对于非跨载波调度方式, UE在 PCell和 SCell 的活动期间在本服务小区上监听 PDCCH。对于跨载波调度方式, S Cell 可以被配置为由 PCell或者另外的 SCell调度; PCell仅能被自己调度, 不能被跨载波调度。 发送控制信令的服务小区称为调度小区 ( Scheduling cell ), 调度小区向 UE指示当前调度的是哪一个服务小 区。 在配置了跨载波调度时, 基站可以在 PCell 或调度小区上配置 E-PDCCH。
S102: 所述基站向所述用户设备发送所述 E-PDCCH的资源配置 信息, 以使所述用户设备根据所述资源配置信息监听所述 E-PDCCH。
示例性的, 所述基站向所述用户设备发送所述 E-PDCCH的资源 配置信息, 包括:
所述基站向所述用户设备发送配置了所述 E-PDCCH的所述服务 小区的信息, 该信息可以包括以下至少一种;
所述辅服务小区的辅服务小区索引或物理小区标识; 或, 所述新载波类型对应的服务小区的辅服务小区索引或物理小区 标识。
示例性的, 所述配置信息包括下述信息的至少一种:
所述 E-PDCCH 资源分配类型, 如集中式 (localized ) 或分布式 ( distributed )虚拟资源块( Virtual Resource Block, 筒称 VRB )分配类型、 资源块数目信息等,为 3GPP协议 TS 36.213目前支持 3种物理下行共享信 道资源分配类型之一: 类型 0、 类型 1、 类型 2。 集中式资源分配指 VRB 连续的资源分配方式; 分布式资源分配指 VRB 非连续的资源分配方式。 类型 0为集中式资源分配方式, 使用位图 (bitmap ) 的形式指示哪些资源 块组(Resource Block Group, 筒称 RBG )被分配给 UE, RBG代表一组连 续的 VRB。 类型 1为集中式资源分配方式, 从一组 RBG子集中指示其中 的一些 VRB分配给 UE。 类型 2指示一组连续的或非连续的 VRB分配给 UE。
对应的资源块(RB )分配, 指才艮据相应资源分配类型所分配的资源块 数目信息) ;
子帧模式, 用于指示基站在哪些子帧发送 E-PDCCH; E-PDCCH的资源起始位置, E-PDCCH符号的开始位置; 解调参考信号 (DMRS ) 配置, 用于指示解调 E-PDCCH所使用的参 考信号;
物理上行控制信道( PUCCH )反馈配置信息, 用于指示上行混合自动 重传请求( Hybrid Automatic Repeat Request, 筒称 HARQ )反馈的资源;
E-PDCCH和 PDSCH资源复用方式,指在子帧内 E-PDCCH和 PDSCH 按照频分复用 FDM、 时分复用 TDM或码分复用 CDM的方式;
E-PDCCH和天线端口的资源映射方式。
示例性的, 基站将所述 E-PDCCH的配置信息通知 UE的方法具体 包括, 所述基站通过无线资源控制( Radio Resource Control, 筒称 RRC ) 信令, 或者媒体接入控制 ( Media Access Control, 筒称 MAC ) 信令, 或者 PDCCH控制信令将所述 E-PDCCH的配置信息通知所述 UE。
示例性的, 所述基站通过无线资源控制 ( RRC ) 信令将所述 E-PDCCH的配置信息通知 UE的方法具体包括,基站在信元辅服务小 区无线资源专用配置或辅服务小区无线资源公共配置或无线资源专 用配置或辅服务小区物理专用配置或物理专用配置中包含所述 E-PDCCH 配置信息, 基站通过无线资源控制重配置消息发送所述信 元给 UE。
进一步的, 该方法还包括:
基站在帧结构的第一子帧上使用 E-PDCCH向用户设备发送调度 信息, 该第一子帧包括该帧结构的部分或全部子帧。
进一步的, 该方法还包括:
当第一子帧为帧结构的部分子帧时, 该基站在该帧结构的第二子 帧上使用 PDCCH向用户设备发送上述调度信息, 该第二子帧为帧结 构除第一子帧外的其余子帧。
进一步的, 该方法还包括:
该基站通过位图方式在上述第一子帧上标识 E-PDCCH。
进一步的, 所述方法还可以包括,
所述基站在配置了所述 E-PDCCH的所述服务小区对应的 TAT运 行时, 经由所述服务小区的所述 E-PDCCH向所述用户设备发送调度 信息; 或者,
所述基站在配置了所述 E-PDCCH的所述服务小区对应的 TAT未 运行时,经由所述服务小区的 PDCCH向所述用户设备发送调度信息。
示例性的, E-PDCCH和 PDCCH用于承载为 UE分配的资源信息, UE在 DRX活动时间监听 PDCCH和 E-PDCCH, 并根据 PDCCH和 E-PDCCH所指示的 UE标识如小区-无线网络临时标识 ( C-RNTI ) 判 断为基站分配给自己的资源信息, 获取资源信息, 在该资源信息所指 示的时频域资源上发送 /接收数据。
进一步的, 当所述服务小区为主服务小区时, 所述方法还包括: 所述基站经由所述主服务小区的 PDCCH向所述用户设备发送第 一调度信息;
所述基站经由所述主服务小区的所述 E-PDCCH向所述用户设备 发送第二调度信息;
其中, 所述第一调度信息用于调度如下至少一种消息:
系统信息、 寻呼、 或多媒体广播组播业务单频网消息;
所述第二调度信息可以不包括系统信息、 寻呼、 或多媒体广播组 播业务单频网消息。
进一步的, 所述方法还可以包括: 所述基站在确定所述用户设备 无线链路失败到无线资源控制连接重建立成功的时间段内, 经由所述 主服务小区的 PDCCH向所述用户设备发送调度信息。
进一步的, 所述方法还可以包括:
当所述服务小区为被干扰小区, 且在干扰小区配置了静默子帧 时, 所述基站在所述静默子帧和 /或非静默子帧上, 经由所述服务小区 的 E-PDCCH向所述用户设备发送调度信息, 其中, 所述静默子帧为 所述干扰小区不发送 PDCCH或者以较低功率发送 PDCCH的子帧。
进一步的, 所述方法还可以包括:
当所述服务小区为干扰小区, 且在所述干扰小区配置了静默子帧 时, 所述基站在所述静默子帧和 /或非静默子帧上, 经由所述服务小区 的 E-PDCCH向所述用户设备发送调度信息, 其中, 所述静默子帧为 所述干扰小区不发送 PDCCH或者以较低功率发送 PDCCH的子帧。
本发明实施例提供的一种物理下行控制信道的使能方法。 通过基 站将 E-PDCCH资源配置信息通知 UE, 使 UE根据所述资源配置信息 监听所述 E-PDCCH, 不需要 UE—直同时监听 PDCCH和 E-PDCCH, 减少了 UE的盲检次数。
参见图 2,为 UE侧 E-PDCCH的使能方法流程示意图,如图所示, 可以包括以下步骤:
S 201: 用户设备接收基站为所述用户设备的服务小区所配置的增 强物理下行控制信道 E-PDCCH的资源配置信息; 其中, 所述服务小 区为以下至少一种小区: 主服务小区、 辅服务小区、 或新载波类型对 应的月良务小区。
示例性的, 所述用户设备接收基站为所述用户设备的服务小区所 配置的 E-PDCCH的资源配置信息, 还可以包括:
所述用户设备接收所述基站发送的配置了所述 E-PDCCH的所述 服务小区。
示例性的, UE通过接收基站发送的配置了 E-PDCCH的服务小 区,可以在配置了 E-PDCCH的服务小区或者与所述配置了 E-PDCCH 的服务小区相关联的服务小区监听所述 E-PDCCH。
示例性的, 所述用户设备接收基站为所述用户设备的服务小区所 配置的 E-PDCCH的资源配置信息, 还可以包括:
在配置了跨载波调度时, 所述用户设备接收所述基站在所述主服 务小区或调度小区上配置的所述 E-PDCCH的资源配置信息。
示例性的, 所述配置信息包括下述信息的至少一种:
所述 E-PDCCH资源分配类型和对应的资源块分配、 子帧模式、 E-PDCCH 的资源起始位置、 解调参考信号配置、 物理上行控制信道 反馈配置信息、 E-PDCCH和 PDSCH资源复用方式、 E-PDCCH和天 线端口的资源映射方式。
示例性的, UE 可以通过无线资源控制 (RRC ) 信令, 或者媒体 接入控制 (MAC ) 信令, 或者 PDCCH 控制信令接收基站的发送的
E-PDCCH的资源配置信息。
S202: 所述 UE根据所述资源配置信息监听所述 E-PDCCH。 示例性的, 所述用户设备根据所述资源配置信息监听所述
E-PDCCH, 可以包括:
当所述用户设备处于不连续接收 DRX 活动时间, 且所述服务小 区对应的时间调整定时器 TAT 运行时, 所述用户设备接收所述基站 在所述服务小区上向所述用户设备发送的所述 E-PDCCH的资源配置 信息; 或者,
当所述用户设备处于 DRX活动时间, 且主定时提前组 TAG对应 的 TAT 运行时, 所述用户设备接收所述基站在所述主服务小区, 及 所述主 TAG 对应的所述服务小区上向所述用户设备发送的所述 E-PDCCH的资源配置信息; 或者,
当所述用户设备处于 DRX活动时间, 所述用户设备接收所述基 站在辅定时提前组 TAG对应的所述服务小区上向所述用户设备发送 的所述 E-PDCCH的资源配置信息;
其中, 所述主 TAG对应的所述服务小区包括所述主服务小区、 所述辅服务小区、 或所述新载波类型对应的服务小区;
所述辅 TAG对应的所述服务小区包括所述辅服务小区、 或所述 新载波类型对应的服务小区。
示例性的, 所述 UE根据所述资源配置信息监听所述 E-PDCCH 可以包括:
用户设备在配置了所述 E-PDCCH的所述服务小区对应的 TAT运 行时, 接收所述基站经由所述服务小区的所述 E-PDCCH发送的调度 信息; 或者,
用户设备在配置了所述 E-PDCCH的所述服务小区对应的 TAT未 运行时,接收所述基站经由所述服务小区的物理下行控制信道 PDCCH 发送的调度信息。
进一步的, 该方法还包括: 用户设备在基站发送的帧结构的第一子帧上监听上述 E-PDCCH , 该第一子帧包括帧结构的部分或全部子帧。
进一步的, 该方法还包括:
当第一子帧为帧结构的部分子帧时, 用户设备在基站发送的帧结 构的第二子帧上监听 PDCCH, 该第二子帧为帧结构除第一子帧外的 其余子帧。
进一步的, 该方法还包括:
用户设备通过位图方式识别上述 E-PDCCH。
进一步的, 当所述服务小区为主服务小区时, 所述方法还可以包 括:
用户设备接收所述基站经由所述主服务小区的 PDCCH发送的第 一调度信息;
用户设备接收所述基站经由所述主服务小区的 E-PDCCH发送的 第二调度信息;
其中, 所述第一调度信息用于调度如下至少一种消息:
系统信息、 寻呼、 或多媒体广播组播业务单频网消息;
所述第二调度信息可以不包括系统信息、 寻呼、 或多媒体广播组 播业务单频网消息。
进一步的, 所述方法还可以包括:
所述用户设备在无线链路失败到无线资源控制连接重建立成功的 时间段内, 接收所述基站经由所述主服务小区的 PDCCH发送的调度信 进一步的, 所述方法还可以包括:
当所述服务小区为被干扰小区, 且在干扰小区配置了静默子帧 时, 所述用户设备在所述静默子帧和 /或非静默子帧上, 接收所述基站 经由所述服务小区的 E-PDCCH发送的调度信息, 其中, 所述静默子 帧为所述干扰小区不发送 PDCCH或者以较低功率发送 PDCCH的子 帧。
进一步的, 所述方法还可以包括: 当所述服务小区为干扰小区, 且在所述干扰小区配置了静默子帧 时, 所述用户设备在所述静默子帧和 /或非静默子帧上, 接收所述基站 经由所述服务小区的 E-PDCCH发送的调度信息, 其中, 所述静默子 帧为所述干扰小区不发送 PDCCH或者以较低功率发送 PDCCH的子 帧。
本发明实施例提供的一种物理下行控制信道的使能方法。 UE 通 过接收基站为所述 UE的服务小区配置的 E-PDCCH的资源配置信息, 从而根据所述资源配置信息监听所述 E-PDCCH,不需要 UE—直同时 监听 PDCCH和 E-PDCCH, 减少了 UE的盲检次数。
下面通过具体实施例对上述方法实施例进行说明。
实施例一
以基站为 UE配置了一个 PCell和一个 SCell为例, 当然也适用于基 站为 UE配置了更多 SCell的情况。
示例性的, 基站可以根据服务小区的负载、 干扰、 业务量等实际 条件选择给哪个服务小区配置 E-PDCCH, 可以包括:
基站根据服务小区的负荷量, 为负荷量大于预设阀值的服务小区 配置 E-PDCCH。
示例性的, 基站可以预先设置负荷量阀值, 预先设置的负荷量阀 值可以为指定时间周期内特定服务小区物理资源块占用百分比, 基站 可以根据服务小区在一定时间周期内的下行总物理资源块 PRB 占用 情况来确定小区的负荷量。 当基站确定服务小区的负荷量大于预先设 置的负荷量阀值时, 基站为该服务小区配置 E-PDCCH。
根据服务小区的用户数, 为用户数大于预设阀值服务小区配置 E-PDCCH。
示例性的, 基站可以预先设置用户数阀值, 预先设置的用户数阀 值可以为指定时间周期内特定服务小区处于连接状态且有业务活动 的用户数, 基站可以根据一定时间周期内服务小区中处于连接状态且 有业务活动的用户数确定服务小区的用户数大于预先设置的用户数 阀值时, 基站为该服务小区配置 E-PDCCH。 根据服务小区的信道质量及 UE所需要的信道质量, 为信道质量 小于 UE所需要的信道质量的服务小区配置 E-PDCCH。
示例性的, 基站可以预先设置指定时间周期内特定服务小区的信 道质量指示 ( Channel Quality Indicator , 筒称 CQI ) 阀值, 基站根据 UE报告的特定服务小区的 CQI进行判断,当 CQI小于预先设置的 CQI 阀值时, 基站为该服务小区配置 E-PDCCH。
示例性的, 当基站根据上述方法判断需要给 SCell配置 E-PDCCH 时, 如果 PCell和 SCell使用不同的 TA值, 则基站在 UE处于 DRX 活动时间, 且 SCell对应的 TAT运行时为 SCell配置 E-PDCCH, 如果 PCell和 SCell使用相同的 TA值, 则基站在 UE处于 DRX活动时间, 且 PCell和 SCell所在的 TAG组的 TAT运行时为 SCell配置 E-PDCCH。
示例性的,基站可以在新增或者修改 SCell配置时向 UE发送无线资 源控制重配置消息,包含 E-PDCCH的资源配置信息。基站可以通过 RRC 信令, 或者 MAC信令, 或者 PDCCH控制信令将 E-PDCCH的配置信息通 知 UE, 例如, E-PDCCH资源配置信息可以包含在无线资源配置 SCell 专用 ( Radio Resource Config Dedicated SCell ) 的信元中或无线资源配 置 SCell共同 ( Radio Resource Config Common SCell ) 的信元中或无线 电资源配置专线 ( Radio Resource Config Dedicated ) 的信元中或物理 配置 SCell专用 ( Physical Config Dedicated SCell )的信元中或物理配置 专线 ( Physical Config Dedicated ) 的信元中。
其中, 新增 SCell时, SCell的初始状态为去激活; 修改 SCell配置信 息时, SCell的状态保持原来的状态, 为激活或去激活状态。 UE在去激 活的 SCell上不监听 PDCCH, 不在物理下行共享信道( PDSCH )接收下 行数据, 不发送上行物理上行共享信道 ( Physical uplink shared channel , 筒称 PUSCH ) /信道状态信息 ( Channel State Information , 筒称 CSI ) /探测参考信号 ( Sounding Reference Signal, 筒称 SRS ) 。 基 站可以通过媒体接入控制层控制单元向 UE发送激活 /去激活信令, UE 接收基站的激活 /去激活信令后, 激活 S Cell或者去激活 S Cell。
基站为 SCell配置 E-PDCCH后, 且 SCell在处于激活状态后,基站在 该 SCell所对应的 TAT运行时, 经由该 SCell的 E-PDCCH向 UE发送调度 信息; 在该 SCell所对应的 TAT未运行时, 经由该 SCell的 PDCCH的资源 位置上向 UE发送调度信息。 且在该 SCell所对应的 TAT运行时, UE在 该 SCell上监听 E-PDCCH , 以接收基站经由该 SCell的 E-PDCCH发送的 调度信息; 在该 SCell所对应的 TAT未运行时, UE在该 SCell上监听 PDCCH , 以接收基站经由该 SCell的 PDCCH发送的调度信息。
优选的, 为了进一步减少 UE 的盲检次数, 基站为 SCell 配置 E-PDCCH的资源配置信息可以包括该 E-PDCCH占用的时频域资源的 资源位置信息, 例如, 可以包括 E-PDCCH占用的时频域资源的频域范 围或者 E-PDCCH占用的时频域资源的时域范围, 或者 E-PDCCH占用 的时频域资源的频域范围和时域范围。
本实施例以 E-PDCCH的频域范围为例进行说明, 其中, 该 SCell 的 E-PDCCH占用的时频域资源的频域范围可以是连续的或者不连续 的。 当 E-PDCCH占用的时频域资源的频域范围连续时, 基站可以通过 指示频域范围的起始位置来确定 E-PDCCH在时频域资源中具体的频率 位置; 当 E-PDCCH占用的时频域资源的频域范围不连续时, 基站可以 通过指示频域范围的起始位置和频域间隔来确定 E-PDCCH在时频域资 源中具体的频率位置。 其中, 基站可以通过 PDCCH指示 E-PDCCH的起 始位置, UE通过监听 PDCCH获取 E-PDCCH的起始位置; 基站也可以 通过信令或协议指示 E-PDCCH的起始位置, UE收到信令或协议时获取 E-PDCCH的起始位置。 UE通过基站发送的 E-PDCCH的频域范围信息 可以仅在该频域范围内进行盲检, 从而进一步减少了 UE的盲检次数。
基站基于该 SCell的负载、 干扰、 业务量等条件的变化为该 SCell 重新配置 E-PDCCH后, 包括删除 E-PDCCH配置、修改 E-PDCCH资源映 射、 资源起始位置等, 再利用上述方法通知 UE, 然后利用重新配置的 E-PDCCH发送调度信息。
本实施例基站通过在 SCell上配置 E-PDCCH,可以提高 SCell吞吐量 和调度效率, 解决 SCell的传统 PDCCH控制域受干扰的问题。
该实施例中, 同样适用于为 PCell或者新载波类型对应的服务小区 配置 E-PDCCH。
实施例二
以基站配置了一个 PCell和一个 SCell为例, 当然也适用于基站配置 了更多 SCell的情况。
示例性的, 基站根据服务小区的负载、 干扰、 业务量等实际条件 选择给 PCell配置 E-PDCCH, 如果 PCell和 SCell使用不同的 TA值, 则基站在 UE处于 DRX活动时间,且 PCell对应的 TAT运行时为 PCell 配置 E-PDCCH, 如果 PCell和 SCell使用相同的 TA值, 则基站在 UE 处于 DRX活动时间, 且 PCell和 PCell所在的 TAG组的 TAT运行时 为 PCell配置 E-PDCCH。
示例性的,基站可以在新增或者修改 PCell配置时向 UE发送无线资 源控制重配置消息,包含 E-PDCCH的资源配置信息。基站可以通过 RRC 信令, 或者 MAC信令, 或者 PDCCH控制信令将 E-PDCCH的配置信息通 知 UE ,例如, E-PDCCH的资源配置信息可以包含在无线资源配置 PCell 专用 ( Radio Resource Config Dedicated PCell ) 的信元中或无线资源配 置 PCell共同 ( Radio Resource Config Common PCell ) 的信元中或无线 资源配置专线 ( Radio Resource Config Dedicated ) 的信元中或物理配 置 PCell专用 ( Physical Config Dedicated PCell )的信元中或物理配置专 线 ( Physical Config Dedicated ) 的信元中。
其中, 新增 PCell时, PCell的初始状态为激活; 修改 PCell配置信息 时, PCell的状态保持原来的状态, 为激活状态。
进一步的,基站为 PCell配置 E-PDCCH后, 且 PCell在处于激活状态 后, 基站在该 PCell所对应的 TAT运行时, 经由该 PCell的 E-PDCCH向 UE发送调度信息; 在该 PCell所对应的 TAT未运行时, 经由该 PCell的 PDCCH的资源位置上向 UE发送调度信息。 且在该 PCell所对应的 TAT 运行时, UE在该 PCell上监听 E-PDCCH , 以接收基站经由该 PCell的 E-PDCCH发送的调度信息; 在该 PCell所对应的 TAT未运行时, UE在该 PCell上监听 PDCCH , 以接收基站经由该 PCell的 PDCCH发送的调度信 进一步的, 基站经由该 PCell的 PDCCH向 UE发送第一调度信息; 基站经由该 PCell的 E-PDCCH向 UE发送第二调度信息;
其中, 所述第一调度信息用于调度如下至少一种消息:
系统信息、 寻呼、 或多媒体广播组播业务单频网消息;
所述第二调度信息可以不包括系统信息、 寻呼、 或多媒体广播组 播业务单频网消息。
示例性的, 基站经由 PCell的 PDCCH向 UE发送系统信息、 寻呼、 多媒体广播组播业务单频网消息, 经由 PCell的 E-PDCCH向 UE发送除 系统信息、 寻呼、 多媒体广播组播业务单频网消息的调度信息; UE接 收基站经由 PCell的 PDCCH发送的系统信息、 寻呼、 多媒体广播组播业 务单频网消息, 接收基站经由 PCell的 E-PDCCH发送的除系统信息、 寻 呼、 多媒体广播组播业务单频网消息之外的调度信息。
进一步的, 基站在 UE无线链路失败 RLF后到 RRC连接重建立成功 之前的时间段内经由 PCell的 PDCCH向 UE发送调度信息; UE在无线链 路失败后到 RRC连接重建立成功之前的时间段内接收基站经由 PCell的 PDCCH发送的调度信息, 以便于重新进入 RRC连接状态。
优选的, 为了进一步减少 UE的盲检次数, 基站为 PCell配置 E-PDCCH的资源配置信息可以包括该 E-PDCCH占用的时频域资源的 资源位置信息, 本实施例以 E-PDCCH的占用的时频域资源的时域范围 为例进行说明。
示例性的, 时频域资源位置中的时域资源位置以子帧为单位, 使 用至少一种子帧模式, 针对至少一个无线帧, (一个无线帧包含 10个 子帧 ), 基站可以在部分子帧或全部子帧上使用 E-PDCCH向 UE发送 调度信息, 在所述部分子帧之外的子帧上使用 PDCCH向 UE发送调 度信息, 基站可以用位图图像 ( bitmap ) 表示其中哪些子帧使用 E-PDCCH。
参见图 3 , 为一个子帧模式, 基站在白色框所代表的子帧中经由 E-PDCCH 向 UE 发送调度信息, UE 在白色框所代表的子帧中监听 E-PDCCH, 以接收基站经由 E-PDCCH向 UE发送调度信息; 在黑色 框所代表的子帧中监听 PDCCH, 以接收基站经由 PDCCH向 UE发送 调度信息。 例如, 子帧模式可以使用干扰小区的静默子帧 ( Almost blank subframe, 筒称 ABS ) 子帧模式, 在这样的子帧模式, 干扰小 区仅发送小区特定的参考信号、 同步信号, 而不发送 PDCCH或者以 较低功率发送 PDCCH, 被干扰小区和 /或干扰小区的 UE根据所述子 帧模式监听 E-PDCCH。 子帧模式可以单独配置或者利用时域测量子 帧限制配置, 包括 PCell测量子帧模式和邻区测量子帧模式。
示例性的, 当该 PCell为被干扰小区, 且在干扰小区配置了静默 子帧时, 基站在所述静默子帧和 /或非静默子帧上, 经由该 PCell 的 E-PDCCH向 UE发送调度信息, UE在所述静默子帧和 /或非静默子帧 上, 接收基站经由该 PCell的 E-PDCCH向 UE发送调度信息, 其中, 所述静默子帧为所述干扰小区不发送 PDCCH 或者以较低功率发送 PDCCH的子帧。
当该 PCell为干扰小区, 且在该 PCell配置了静默子帧时, 基站 在所述静默子帧和 /或非静默子帧上,经由该 PCell的 E-PDCCH向 UE 发送调度信息, UE在所述静默子帧和 /或非静默子帧上, 接收基站经 由该 PCell的 E-PDCCH向 UE发送的调度信息, 其中, 所述静默子帧 为该 PCell不发送 PDCCH或者以较低功率发送 PDCCH的子帧。
基站基于该 PCell的负载、 干扰、 业务量等条件的变化, 根据配置 策略为该 PCell重新配置 E-PDCCH后, 包括删除 E-PDCCH配置、 修改 E-PDCCH资源映射、 资源起始位置等, 再利用上述方法通知 UE, 然后 利用重新配置的 E-PDCCH发送调度信息。
该实施例中,同样适用于为 SCell或者新载波类型配置 E-PDCCH。 本发明实施例提供的一种物理下行控制信道的使能方法, 可以提 高 PCell吞吐量和调度效率, 减少 UE的盲检次数, 通过在干扰小区 或者被干扰小区的特定子帧上配置 E-PDCCH可有效减少干扰小区对 被干扰小区的干扰。
实施例三
在异构网 ( Heterogeneous network, 筒称 Hetnet ) 载波聚合场景, 宏基站 ( Macro eNB ) 和低功率节点 ( Low Power Node, 筒称 LPN ) I 远端射频单元 ( Remote Radio Head, 筒称 RRH ) 所提供的载波进行非 共站点聚合, 参见图 4。 设宏基站和 LPN均提供载波 fl和 f2 , 接入宏基 站的 UE (筒称为 Macro UE ) 以 fl为 PCell、 f2为 SCell; 接入 LPN的 UE (筒称为 Pico UE ) 以 f2为 PCell、 fl为 SCell。
如果配置在 PCell对 SCell进行跨载波调度,基站可以在为 SCell配置 /重配置跨载波调度时将 E-PDCCH配置信息通知 UE, 向 UE指示在调度 小区使用 E-PDCCH还是 PDCCH。 UE接收 E-PDCCH配置信息, 根据所 述跨载波调度配置中的调度小区信息 ( Scheduling Cell Information , 筒 称 SCI ) 和载波指示域 ( Carrier Indicator Field, 筒称 CIF ) 信息在调度 小区监听 E-PDCCH。 对 Macro UE和 Pico UE在各自 的 PCell使用 E-PDCCH对 SCell进行跨载波调度, 在 PCell和 SCell传统的 PDCCH区域 不发送 PDCCH , 可以解决在 PCell使用传统 PDCCH进行跨载波调度可 能发生的 PDCCH容量受限或阻塞问题。
如果不在 PCell对 SCell通过 E-PDCCH或 PDCCH进行跨载波调度, 参见图 5 , 可以使用本发明实施例一的方式。 在 SCell配置 E-PDCCH , 在 PCell使用传统 PDCCH。 从而使 UE可以在 SCell监听 E-PDCCH以回避 干扰, 在 PCell使用传统 PDCCH。
一方面,本发明实施例提供了一种基站 60,应用于图 1所示的方法, 参见图 6-图 7 , 包括,
配置单元 602 ,用于向所述用户设备发送所述配置单元配置的所述 E-PDCCH的资源配置信息, 以使所述用户设备根据所述资源配置信息 监听所述 E-PDCCH; 其中, 所述服务小区为以下至少一种小区:
主服务小区、 辅服务小区、 或新载波类型对应的服务小区; 发送单元 601 ,用于向所述用户设备发送所述配置单元配置的所述 E-PDCCH的资源配置信息, 以使所述用户设备根据所述资源配置信息 监听所述 E-PDCCH。
进一步的, 上述发送单元 601 , 还用于在帧结构的第一子帧上使用 E-PDCCH向用户设备发送调度信息, 该第一子帧包括帧结构的部分或 全部子帧。
进一步的, 上述发送单元 601 , 还用于当第一子帧为帧结构的部分 子帧时, 在帧结构的第二子帧上使用 PDCCH向用户设备发送调度信 息, 第二子帧为帧结构除第一子帧外的其余子帧。
进一步的, 所述发送单元 601可以包括:
第一判断子单元 6011 ,用于判断所述用户设备是否处于不连续接 收 DRX活动时间;
第二判断子单元 6012,用于判断所述服务小区对应的时间调整定 时器 TAT是否运行, 和 /或判断主定时提前组 TAG对应的 TAT是否 运行;
发送子单元 6013 , 用于当所述第一判断子单元 6011判断所述用 户设备处于 DRX活动时间, 且所述第二判断子单元 6012判断所述服 务小区对应的 TAT运行时, 在所述服务小区上向所述用户设备发送 所述 E-PDCCH; 或者,
所述发送子单元 6013 , 用于当所述第一判断子单元 6011判断所 述用户设备处于 DRX活动时间, 且所述第二判断子单元 6012判断所 述主 TAG对应的 TAT运行时, 在所述主月良务小区, 及所述主 TAG 对应的所述服务小区上向所述用户设备发送所述 E-PDCCH; 或者, 所述发送子单元 6013 , 用于当所述第一判断子单元 6011判断所 述用户设备处于 DRX活动时间, 在辅 TAG对应的所述服务小区上向 所述用户设备发送所述 E-PDCCH;
其中, 所述主 TAG对应的所述服务小区包括所述主服务小区、 或所述辅服务小区、 或所述新载波类型对应的服务小区;
所述辅 TAG对应的所述服务小区包括所述辅服务小区、 或所述 新载波类型对应的服务小区。
进一步的, 所述配置单元还用于, 在配置了跨载波调度时, 在所 述主服务小区或调度小区上配置所述 E-PDCCH。
示例性的, 所述配置信息包括下述信息的至少一种:
所述 E-PDCCH资源分配类型和对应的资源块分配、 子帧模式、 E-PDCCH 的资源起始位置、 解调参考信号配置、 物理上行控制信道 反馈配置信息、 E-PDCCH和 PDSCH资源复用方式、 E-PDCCH和天 线端口的资源映射方式。
进一步的, 所述发送单元 601还可以执行多个动作, 既可以采用一 个发送单元来完成需要的所有动作, 也可以采用多个发送单元来分别完 成不同的动作。
例如 ,
发送单元 601 进一步用于, 向所述用户设备发送配置了所述 E-PDCCH的所述良务小区的信息,所述配置了所述 E-PDCCH的所述 服务小区的信息为以下至少一种:
所述辅服务小区的辅服务小区索引或物理小区标识; 或, 所述新载波类型对应的服务小区的辅服务小区索引或物理小区 标识。
所述发送单元 601还用于,
在配置了所述 E-PDCCH的所述服务小区对应的 TAT运行时, 经 由所述服务小区的所述 E-PDCCH向所述用户设备发送调度信息; 或 者,
在配置了所述 E-PDCCH的所述月良务小区对应的 TAT未运行时, 经由所述服务小区的物理下行控制信道 PDCCH向所述用户设备发送 调度信息。
所述发送单元 601进一步用于,
经由所述主服务小区的 PDCCH向所述用户设备发送第一调度信 经由所述主服务小区的所述 E-PDCCH向所述用户设备发送第二 调度信息;
其中, 所述第一调度信息用于调度如下至少一种消息:
系统信息、 寻呼、 或多媒体广播组播业务单频网消息;
所述第二调度信息可以不包括系统信息、 寻呼、 或多媒体广播组 播业务单频网消息。 所述发送单元 601进一步用于,在确定所述用户设备无线链路失败 到无线资源控制连接重建立成功的时间段内, 经由所述主服务小区的 PDCCH向所述用户设备发送调度信息。
所述发送单元 601进一步用于,
当所述服务小区为被干扰小区, 且在干扰小区配置了静默子帧 时, 在所述静默子帧和 /或非静默子帧上, 经由所述服务小区的 E-PDCCH 向所述用户设备发送调度信息, 其中, 所述静默子帧为所 述干扰小区不发送 PDCCH或者以较低功率发送 PDCCH的子帧。
所述发送单元 601进一步用于,
当所述服务小区为干扰小区, 且在所述干扰小区配置了静默子帧 时, 在所述静默子帧和 /或非静默子帧上, 经由所述服务小区的 E-PDCCH 向所述用户设备发送调度信息, 其中, 所述静默子帧为所 述干扰小区不发送 PDCCH或者以较低功率发送 PDCCH的子帧。
本实施例提供的基站可以用于执行上述方法实施例中基站的动 作, 例如, 配置单元 602可以执行 101 , 发送单元 601可以执行 102。
本发明实施例提供的基站, 将 E-PDCCH资源配置信息通知 UE, 使 UE根据所述资源配置信息监听所述 E-PDCCH, 不需要 UE—直同 时监听 PDCCH和 E-PDCCH, 减少了 UE的盲检次数。
另一方面, 本发明实施例还提供一种用户设备 80, 应用于图 2所示 的方法, 参见图 8 , 该用户设备 80包括,
接收单元 801 , 用于接收基站为所述用户设备的服务小区所配 置的增强物理下行控制信道 E-PDCCH的资源配置信息;
其中, 所述服务小区为以下至少一种小区:
主服务小区、 辅服务小区、 或新载波类型对应的服务小区。 进一步的, 该接收单元还用于在基站发送的帧结构的第一子帧上 监听 E-PDCCH, 该第一子帧包括帧结构的部分或全部子帧。
进一步的, 该接收单元还用于当第一子帧为帧结构的部分子帧 时, 在基站发送的帧结构的第二子帧上监听 PDCCH, 该第二子帧为 帧结构除第一子帧外的其余子帧。 示例性的, 所述接收单元 801进一步用于,
当所述用户设备 80处于不连续接收 DRX活动时间, 且所述服务 小区对应的时间调整定时器 TAT运行时, 接收所述基站在所述服务 小区上向所述用户设备发送的所述 E-PDCCH的资源配置信息;或者, 当所述用户设备 80处于不连续接收 DRX活动时间, 且主定时提 前组 TAG对应的 TAT运行时, 接收所述基站在所述主服务小区, 及 所述主 TAG 对应的所述服务小区上向所述用户设备发送的所述 E-PDCCH的资源配置信息; 或者,
当所述用户设备 80处于不连续接收 DRX活动时间, 接收所述基 站在辅定时提前组 TAG对应的所述服务小区上向所述用户设备发送 的所述 E-PDCCH的资源配置信息;
其中, 所述主 TAG对应的所述服务小区包括所述主服务小区、 所述辅服务小区、 或所述新载波类型对应的服务小区;
所述辅 TAG对应的所述服务小区包括所述辅服务小区、 或所述 新载波类型对应的服务小区。
示例性的, 所述接收单元 801进一步用于, 接收所述基站发送的 配置了所述 E-PDCCH 的所述服务小区的信息, , 所述配置了所述 E-PDCCH的所述良务小区的信息为以下至少一种:
所述辅服务小区的辅服务小区索引或物理小区标识; 或, 所述新载波类型对应的服务小区的辅服务小区索引或物理小区 标识。
示例性的, 所述配置信息包括下述信息的至少一种:
所述 E - PD C C H资源分配类型和对应的资源块分配、 子帧模式、 E-PDCCH的资源起始位置、 解调参考信号配置、 物理上行控制信道反 馈配置信息、 E-PDCCH和 PDSCH资源复用方式、 E-PDCCH和天线端口 的资源映射方式。
监听单元 802, 用于根据所述接收单元接收的所述资源配置信息 监听所述 E-PDCCH。
示例性的, 所述接收单元 801还可以执行多个动作, 既可以采用一 个接收单元 801来完成需要的所有动作, 也可以采用多个接收单元 801 来分别完成不同的动作。
示例性的, 所述接收单元 801进一步用于,接收基站配置 E-PDCCH 的特定成员载波信息通知;
示例性的, 所述接收单元 801进一步用于,
在配置了所述 E-PDCCH的所述服务小区对应的时间调整定时器 TAT运行时, 接收所述基站经由所述服务小区的所述 E-PDCCH发送 的调度信息; 或者
在配置了所述 E-PDCCH的所述月良务小区对应的 TAT未运行时, 接收所述基站经由所述服务小区的物理下行控制信道 PDCCH发送的 调度信息。
当所述服务小区为主服务小区时, 所述接收单元还用于, 接收所述基站经由所述主服务小区的 PDCCH发送的第一调度信 接收所述基站经由所述主服务小区的 E-PDCCH发送的第二调度 信息;
其中, 所述第一调度信息用于调度如下至少一种消息:
系统信息、 寻呼、 或多媒体广播组播业务单频网消息;
所述第二调度信息可以不包括系统信息、 寻呼、 或多媒体广播组 播业务单频网消息。
示例性的, 所述接收单元 801进一步用于,
在无线链路失败到无线资源控制连接重建立成功的时间段内, 接 收所述基站经由所述主服务小区的 PDCCH发送的调度信息。
示例性的, 所述接收单元 801进一步用于,
在配置了跨载波调度时, 接收所述基站在所述主服务小区或调度 小区上配置的所述 E-PDCCH的资源配置信息。
示例性的, 所述接收单元 801进一步用于,
当所述服务小区为被干扰小区, 且在干扰小区配置了静默子帧 时, 在所述静默子帧和 /或非静默子帧上, 接收所述基站经由所述服务 小区的 E-PDCCH发送的调度信息, 其中, 所述静默子帧为所述干扰 小区不发送 PDCCH或者以较低功率发送 PDCCH的子帧。
示例性的, 所述接收单元 801进一步用于,
当所述服务小区为干扰小区, 且在所述干扰小区配置了静默子帧 时, 在所述静默子帧和 /或非静默子帧上, 接收所述基站经由所述服务 小区的 E-PDCCH发送的调度信息, 其中, 所述静默子帧为所述干扰 小区不发送 PDCCH或者以较低功率发送 PDCCH的子帧。
本实施例提供的用户设备 80 可以用于执行上述方法实施例中用 户设备的动作, 例如, 接收单元 801可以执行 201 , 监听单元 802可 以执行 202。
本发明实施例提供的用户设备 80,通过接收基站为所述用户设备 80的服务小区配置的 E-PDCCH的资源配置信息, 从而根据所述资源 配置信息监听所述 E-PDCCH , 不需要用户设备 80 一直同时监听 PDCCH和 E-PDCCH, 减少了用户设备 80的盲检次数。
另一方法, 本发明实施例还提供了一种 E-PDCCH使能系统, 参见 图 9, 包括,
基站 60,用于为服务于用户设备的服务小区配置增强物理下行控 制信道 E-PDCCH; 向所述用户设备发送所述 E-PDCCH的资源配置信 息, 以使所述用户设备根据所述资源配置信息监听所述 E-PDCCH; 用户设备 80, 用于用户设备接收基站为所述用户设备的服务小区 所配置的增强物理下行控制信道 E-PDCCH的资源配置信息; 根据所述 资源配置信息监听所述 E-PDCCH;
其中, 所述服务小区为以下至少一种小区:
主服务小区、 辅服务小区、 或新载波类型对应的服务小区。
本发明实施例提供的 E-PDCCH使能系统,上述基站 60可以为上 述装置实施例中的基站, 上述用户设备 80 可以为上述装置实施例中 的用户设备通过基站 60为所述用户设备 80的服务小区配置 E-PDCCH 并将 E-PDCCH的资源配置信息发送给用户设备 80, 从而使用户设备 80根据所述资源配置信息监听所述 E-PDCCH,不需要用户设备 80一 直同时监听 PDCCH和 E-PDCCH, 减少了用户设备 80的盲检次数。 本领域普通技术人员可以理解: 实现上述方法实施例的全部或部 分步骤可以通过程序指令相关的硬件来完成, 前述的程序可以存储于 一计算机可读取存储介质中, 该程序在执行时, 执行包括上述方法实 施例的步骤; 而前述的存储介质包括: ROM、 RAM , 磁碟或者光盘 等各种可以存储程序代码的介质。
以上所述, 仅为本发明的具体实施方式, 但本发明的保护范围并 不局限于此, 任何熟悉本技术领域的技术人员在本发明揭露的技术范 围内, 可轻易想到变化或替换, 都应涵盖在本发明的保护范围之内。 因此, 本发明的保护范围应以所述权利要求的保护范围为准。

Claims

权利要求
1、 一种物理下行控制信道的使能方法, 其特征在于, 包括: 基站为用户设备的服务小区配置增强物理下行控制信道
E-PDCCH;
所述基站向所述用户设备发送所述 E-PDCCH的资源配置信息, 以
使所述用户设备根据所述资源配置信息监听所述 E-PDCCH;
其中, 所述服务小区为以下至少一种小区:
主服务小区、 辅服务小区、 或新载波类型对应的服务小区。
2、 根据权利要求 1所述的方法, 其特征在于, 还包括: 所述基站在帧结构的第一子帧上使用所述 E-PDCCH向所述用户 设备发送调度信息, 所述第一子帧包括所述帧结构的部分或全部子 帧。
3、 根据权利要求 2 所述的方法, 其特征在于, 所述基站在帧结 构的第一子帧上使用所述 E-PDCCH向所述用户设备发送调度信息, 具体包括:
当所述服务小区为被干扰小区, 且在干扰小区配置了静默子帧 时, 所述基站在所述静默子帧和 /或非静默子帧上, 经由所述服务小区 的 E-PDCCH向所述用户设备发送所述调度信息, 其中, 所述静默子 帧为所述干扰小区不发送物理下行控制信道 PDCCH或者以较低功率 发送 PDCCH的子帧。
4、 根据权利要求 2 所述的方法, 其特征在于, 所述基站在帧结 构的第一子帧上使用所述 E-PDCCH向所述用户设备发送调度信息, 具体包括:
当所述服务小区为干扰小区, 且在所述干扰小区配置了静默子帧 时, 所述基站在所述静默子帧和 /或非静默子帧上, 经由所述服务小区 的 E-PDCCH向所述用户设备发送所述调度信息, 其中, 所述静默子 帧为所述干扰小区不发送 PDCCH或者以较低功率发送 PDCCH的子 帧。
5、 根据权利要求 2至 4任一项所述的方法, 其特征在于, 还包 括:
当所述第一子帧为所述帧结构的部分子帧时, 所述基站在所述帧 结构的第二子帧上使用 PDCCH向所述用户设备发送所述调度信息, 所述第二子帧为所述帧结构除所述第一子帧外的其余子帧。
6、 根据权利要求 2至 5任一项所述的方法, 其特征在于, 还包 括:
所述基站通过位图方式在所述第一子帧上标识所述 E-PDCCH。
7、 根据权利要求 1 至 6任一项所述的方法, 其特征在于, 还包 括:
当所述基站判断所述用户设备处于不连续接收 DRX活动时间, 且所述服务小区对应的时间调整定时器 TAT 运行时, 所述基站在所 述服务小区上使用所述 E-PDCCH 向所述用户设备发送所述调度信 息; 或者,
当所述基站判断所述用户设备处于 DRX活动时间, 且主定时提 前组 TAG对应的 TAT运行时, 所述基站在所述主服务小区, 及所述 主 TAG对应的所述服务小区上使用所述 E-PDCCH向所述用户设备发 送所述调度信息; 或者,
当所述基站判断所述用户设备处于 DRX活动时间, 所述基站在 辅定时提前组 TAG对应的所述良务小区上使用所述 E-PDCCH向所述 用户设备发送所述调度信息;
其中, 所述主 TAG对应的所述服务小区包括所述主服务小区、 或辅服务小区、 或所述新载波类型对应的服务小区;
所述辅 TAG对应的所述服务小区包括所述辅服务小区、 或所述 新载波类型对应的服务小区。
8、 根据权利要求 1 至 7任一项所述的方法, 其特征在于, 所述 基站向所述用户设备发送所述 E-PDCCH的资源配置信息, 包括: 所述基站向所述用户设备发送配置了所述 E-PDCCH的所述服务 小区的信息, 所述配置了所述 E-PDCCH的所述服务小区的信息为以 下至少一种: 所述辅服务小区的辅服务小区索引或物理小区标识; 或, 所述新载波类型对应的服务小区的辅服务小区索引或物理小区 标识。
9、 根据权利要求 2 所述的方法, 其特征在于, 所述基站在帧结 构的第一子帧上使用所述 E-PDCCH向所述用户设备发送调度信息, 具体包括:
所述基站在配置了所述 E-PDCCH的所述服务小区对应的 TAT运 行时, 经由所述服务小区的所述 E-PDCCH向所述用户设备发送第二 调度信息。
10、 根据权利要求 9所述的方法, 其特征在于, 所述基站在所述 帧结构的第二子帧上使用 PDCCH 向所述用户设备发送所述调度信 息, 具体包括:
所述基站在配置了所述 E-PDCCH的所述服务小区对应的 TAT未 运行时, 经由所述服务小区的 PDCCH向所述用户设备发送第一调度 信息。
11、 根据权利要求 10所述的方法, 其特征在于:
当所述服务小区为主服务小区时, 所述基站经由所述服务小区的 PDCCH向所述用户设备发送所述第一调度信息, 具体包括:
所述基站经由所述主服务小区的 PDCCH向所述用户设备发送所 述第一调度信息;
当所述服务小区为主服务小区时, 所述基站经由所述服务小区的 E-PDCCH向所述用户设备发送所述第二调度信息, 具体包括:
所述基站经由所述主服务小区的所述 E-PDCCH向所述用户设备 发送所述第二调度信息;
其中, 所述第一调度信息用于调度如下至少一种消息:
系统信息、 寻呼、 或多媒体广播组播业务单频网消息。
12、 根据权利要求 5至 9任一项所述的方法, 其特征在于, 所述 基站在所述帧结构的第二子帧上使用 PDCCH向所述用户设备发送所 述调度信息, 具体包括:
所述基站在确定所述用户设备无线链路失败到无线资源控制连 接重建立成功的时间段内, 经由所述主服务小区的 PDCCH向所述用 户设备发送调度信息。
13、 根据权利要求 1 至 12任一项所述的方法, 其特征在于, 所 述基站为所述用户设备的服务小区配置 E-PDCCH, 包括:
在配置了跨载波调度时, 所述基站在所述主服务小区或调度小区 上配置所述 E-PDCCH。
14、 根据权利要求 1 至 13任一项所述的方法, 其特征在于, 所 述配置信息包括下述信息的至少一种:
所述 E-PDCCH资源分配类型和对应的资源块分配、 子帧模式、 E-PDCCH 的资源起始位置、 解调参考信号配置、 物理上行控制信道 反馈配置信息、 E-PDCCH和 PDSCH资源复用方式、 E-PDCCH和天 线端口的资源映射方式。
15、 一种物理下行控制信道的使能方法, 其特征在于, 包括: 用户设备接收基站为所述用户设备的服务小区所配置的增强物 理下行控制信道 E-PDCCH的资源配置信息;
所述用户设备根据所述资源配置信息监听所述 E-PDCCH;
其中, 所述服务小区为以下至少一种小区:
主服务小区、 辅服务小区、 或新载波类型对应的服务小区。
16、 根据权利要求 15所述的方法, 其特征在于, 还包括: 所述用户设备在所述基站发送的帧结构的第一子帧上监听所述 E-PDCCH, 所述第一子帧包括所述帧结构的部分或全部子帧。
17、 根据权利要求 16 所述的方法, 其特征在于, 所述用户设备 在所述基站发送的帧结构的第一子帧上监听所述 E-PDCCH, 具体包 括:
当所述服务小区为被干扰小区, 且在干扰小区配置了静默子帧 时, 所述用户设备在所述静默子帧和 /或非静默子帧上, 经由所述服务 小区的 E-PDCCH监听所述调度信息, 其中, 所述静默子帧为所述干 扰小区不发送物理下行控制信道 PDCCH 或者以较低功率发送 PDCCH的子帧。
18、 根据权利要求 16 所述的方法, 其特征在于, 所述用户设备 在所述基站发送的帧结构的第一子帧上监听所述 E-PDCCH, 具体包 括:
当所述服务小区为干扰小区, 且在所述干扰小区配置了静默子帧 时, 所述用户设备在所述静默子帧和 /或非静默子帧上, 经由所述服务 小区的 E-PDCCH监听所述调度信息, 其中, 所述静默子帧为所述干 扰小区不发送 PDCCH或者以较低功率发送 PDCCH的子帧。
19、 根据权利要求 16至 18任一项所述的方法, 其特征在于, 还 包括:
当所述第一子帧为所述帧结构的部分子帧时, 所述用户设备在所 述基站发送的所述帧结构的第二子帧上监听 PDCCH, 所述第二子帧 为所述帧结构除所述第一子帧外的其余子帧。
20、 根据权利要求 16至 19任一项所述的方法, 其特征在于, 还 包括:
所述用户设备通过位图方式识别所述 E-PDCCH。
21、 根据权利要求 15 所述的方法, 其特征在于, 所述用户设备 根据所述资源配置信息监听所述 E-PDCCH, 包括:
当所述用户设备处于不连续接收 DRX 活动时间, 且所述服务小 区对应的时间调整定时器 TAT 运行时, 所述用户设备接收所述基站 在所述服务小区上所述 E-PDCCH向所述用户设备发送的调度信息; 或者,
当所述用户设备处于 DRX活动时间, 且主定时提前组 TAG对应 的 TAT 运行时, 所述用户设备接收所述基站在所述主服务小区, 及 所述主 TAG对应的所述服务小区上使用所述 E-PDCCH向所述用户设 备发送的调度信息; 或者,
当所述用户设备处于 DRX活动时间, 所述用户设备接收所述基 站在辅定时提前组 TAG对应的所述服务小区上使用所述 E-PDCCH向 所述用户设备发送的调度信息;
其中, 所述主 TAG对应的所述服务小区包括所述主服务小区、 或辅服务小区、 或所述新载波类型对应的服务小区;
所述辅 TAG对应的所述服务小区包括所述辅服务小区、 或所述 新载波类型对应的服务小区。
22、 根据权利要求 15至 21任一项所述的方法, 其特征在于, 所 述用户设备接收基站为所述用户设备的服务小区所配置的 E-PDCCH 的资源配置信息, 包括:
所述用户设备接收所述基站发送的配置了所述 E-PDCCH的所述 服务小区的信息, 所述配置了所述 E-PDCCH的所述服务小区的信息 为以下至少一种:
所述辅服务小区的辅服务小区索引或物理小区标识; 或, 所述新载波类型对应的服务小区的辅服务小区索引或物理小区 标识。
23、 根据权利要求 15所述的方法, 其特征在于, 还包括: 所述用户设备在配置了所述 E-PDCCH 的所述服务小区对应的 TAT运行时, 接收所述基站经由所述服务小区的所述 E-PDCCH发送 的调度信息; 或者,
所述用户设备在配置了所述 E-PDCCH 的所述服务小区对应的 TAT未运行时,接收所述基站经由所述服务小区的物理下行控制信道 PDCCH发送的调度信息。
24、 根据权利要求 15 所述的方法, 其特征在于, 当所述服务小 区为主服务小区时, 所述方法还包括:
所述用户设备接收所述基站经由所述主服务小区的 PDCCH发送 的第一调度信息;
所述用户设备接收所述基站经由所述主服务小区的 E-PDCCH发 送的第二调度信息;
其中, 所述第一调度信息用于调度如下至少一种消息:
系统信息、 寻呼、 或多媒体广播组播业务单频网消息。
25、 一种基站, 其特征在于, 包括,
配置单元, 用于为用户设备的服务小区配置增强物理下行控制信 道 E-PDCCH;
发送单元, 用于向所述用户设备发送所述配置单元配置的所述 E-PDCCH 的资源配置信息, 以使所述用户设备根据所述资源配置信 息监听所述 E-PDCCH;
其中, 所述服务小区为以下至少一种小区:
主服务小区、 辅服务小区、 或新载波类型对应的服务小区。
26、 根据权利要求 25所述的基站, 其特征在于:
所述发送单元,还用于在帧结构的第一子帧上使用所述 E-PDCCH 向所述用户设备发送调度信息, 所述第一子帧包括所述帧结构的部分 或全部子帧。
27、 根据权利要求 26所述的基站, 其特征在于:
所述发送单元, 还用于当所述第一子帧为所述帧结构的部分子帧 时, 在所述帧结构的第二子帧上使用 PDCCH向所述用户设备发送所 述调度信息, 所述第二子帧为所述帧结构除所述第一子帧外的其余子 帧。
28、 根据权利要求 25 所述的基站, 其特征在于, 所述发送单元 包括:
第一判断子单元, 用于判断所述用户设备是否处于不连续接收 DRX活动时间;
第二判断子单元, 用于判断所述服务小区对应的时间调整定时器 TAT是否运行, 和 /或判断主定时提前组 TAG对应的 TAT是否运行; 发送子单元, 用于当所述第一判断子单元判断所述用户设备处于 DRX活动时间,且所述第二判断子单元判断所述服务小区对应的 TAT 运行时, 在所述服务小区上使用所述 E-PDCCH发送调度信息; 或者, 所述发送子单元, 用于当所述第一判断子单元判断所述用户设备 处于 DRX活动时间, 且所述第二判断子单元判断所述主 TAG对应的 TAT运行时, 在所述主服务小区, 及所述主 TAG对应的所述服务小 区上使用所述 E-PDCCH发送调度信息; 或者,
所述发送子单元, 用于当所述第一判断子单元判断所述用户设备 处于 DRX 活动时间, 在辅 TAG 对应的所述月良务小区上使用所述 E-PDCCH发送调度信息;
其中, 所述主 TAG对应的所述服务小区包括所述主服务小区、 或辅服务小区、 或所述新载波类型对应的服务小区; 所述辅 TAG对应的所述服务小区包括所述辅服务小区、 或所述 新载波类型对应的服务小区。
29、 根据权利要求 25至 28任一项所述的基站, 其特征在于, 所 述发送单元进一步用于, 向所述用户设备发送配置了所述 E-PDCCH 的所述服务小区的信息, 所述配置了所述 E-PDCCH的所述服务小区 的信息为以下至少一种:
所述辅服务小区的辅服务小区索引或物理小区标识; 或, 所述新载波类型对应的服务小区的辅服务小区索引或物理小区 标识。
30、 根据权利要求 25 所述的基站, 其特征在于, 所述发送单元 还用于,
在配置了所述 E-PDCCH的所述服务小区对应的 TAT运行时, 经 由所述服务小区的所述 E-PDCCH向所述用户设备发送调度信息; 或 者,
在配置了所述 E-PDCCH的所述月良务小区对应的 TAT未运行时, 经由所述服务小区的物理下行控制信道 PDCCH向所述用户设备发送 调度信息。
31、 根据权利要求 25 所述的基站, 其特征在于, 所述发送单元 还用于,
经由所述主服务小区的 PDCCH向所述用户设备发送第一调度信 经由所述主服务小区的所述 E-PDCCH向所述用户设备发送第二 调度信息;
其中, 所述第一调度信息用于调度如下至少一种消息:
系统信息、 寻呼、 或多媒体广播组播业务单频网消息。
32、 根据权利要求 25所述的基站, 其特征在于, 所述发送单元还 用于, 在确定所述用户设备无线链路失败到无线资源控制连接重建立 成功的时间段内, 经由所述主服务小区的 PDCCH向所述用户设备发送 调度信息。
33、 根据权利要求 25至 32任一项所述的基站, 其特征在于, 所 述配置单元还用于, 在配置了跨载波调度时, 在所述主服务小区或调 度小区上配置所述 E-PDCCH。
34、 根据权利要求 25 所述的基站, 其特征在于, 所述发送单元 还用于,
当所述服务小区为被干扰小区, 且在干扰小区配置了静默子帧 时, 在所述静默子帧和 /或非静默子帧上, 经由所述服务小区的 E-PDCCH 向所述用户设备发送调度信息, 其中, 所述静默子帧为所 述干扰小区不发送 PDCCH或者以较低功率发送 PDCCH的子帧。
35、 根据权利要求 25 所述的基站, 其特征在于, 所述发送单元 还用于,
当所述服务小区为干扰小区, 且在所述干扰小区配置了静默子帧 时, 在所述静默子帧和 /或非静默子帧上, 经由所述服务小区的 E-PDCCH 向所述用户设备发送调度信息, 其中, 所述静默子帧为所 述干扰小区不发送 PDCCH或者以较低功率发送 PDCCH的子帧。
36、 根据权利要求 25至 35任一项所述的基站, 其特征在于, 所 述配置信息包括下述信息的至少一种:
所述 E-PDCCH资源分配类型和对应的资源块分配、 子帧模式、 E-PDCCH 的资源起始位置、 解调参考信号配置、 物理上行控制信道 反馈配置信息、 E-PDCCH和 PDSCH资源复用方式、 E-PDCCH和天 线端口的资源映射方式。
37、 一种用户设备, 其特征在于, 包括,
接收单元, 用于接收基站为所述用户设备的服务小区所配置的增 强物理下行控制信道 E-PDCCH的资源配置信息;
监听单元, 用于根据所述接收单元接收的所述资源配置信息监听 所述 E-PDCCH;
其中, 所述服务小区为以下至少一种小区:
主服务小区、 辅服务小区、 或新载波类型对应的服务小区。
38、 根据权利要求 37 所述的用户设备, 其特征在于, 所述接收 单元还用于: 在所述基站发送的帧结构的第一子帧上监听所述 E-PDCCH, 所 述第一子帧包括所述帧结构的部分或全部子帧。
39、 根据权利要求 38 所述的用户设备, 其特征在于, 所述接收 单元还用于:
当所述第一子帧为所述帧结构的部分子帧时, 在所述基站发送的 所述帧结构的第二子帧上监听 PDCCH, 所述第二子帧为所述帧结构 除所述第一子帧外的其余子帧。
40、 根据权利要求 37 所述的用户设备, 其特征在于, 所述接收 单元还用于,
当所述用户设备处于不连续接收 DRX 活动时间, 且所述服务小 区对应的时间调整定时器 TAT 运行时, 接收所述基站在所述服务小 区上使用所述 E-PDCCH发送调度信息; 或者,
当所述用户设备处于不连续接收 DRX 活动时间, 且主定时提前 组 TAG对应的 TAT运行时, 接收所述基站在所述主服务小区, 及所 述主 TAG对应的所述服务小区上使用所述 E-PDCCH发送调度信息; 或者,
当所述用户设备处于不连续接收 DRX 活动时间, 接收所述基站 在辅定时提前组 TAG对应的所述服务小区上使用所述 E-PDCCH发送 调度信息;
其中, 所述主 TAG对应的所述服务小区包括所述主服务小区、 辅服务小区、 或所述新载波类型对应的服务小区;
所述辅 TAG对应的所述服务小区包括所述辅服务小区、 或所述 新载波类型对应的服务小区。
41、 根据权利要求 37 所述的用户设备, 其特征在于, 所述接收 单元进一步用于, 接收所述基站发送的配置了所述 E-PDCCH的所述 服务小区的信息, , 所述配置了所述 E-PDCCH的所述服务小区的信 息为以下至少一种:
所述辅服务小区的辅服务小区索引或物理小区标识; 或, 所述新载波类型对应的服务小区的辅服务小区索引或物理小区 标识。
42、 根据权利要求 37 所述的用户设备, 其特征在于, 所述接收 单元还用于,
在配置了所述 E-PDCCH的所述服务小区对应的时间调整定时器 TAT运行时, 接收所述基站经由所述服务小区的所述 E-PDCCH发送 的调度信息; 或者
在配置了所述 E-PDCCH的所述月良务小区对应的 TAT未运行时, 接收所述基站经由所述服务小区的物理下行控制信道 PDCCH发送的 调度信息。
43、 根据权利要求 37 所述的用户设备, 其特征在于, 当所述服 务小区为主服务小区时, 所述接收单元还用于,
接收所述基站经由所述主服务小区的 PDCCH发送的第一调度信 接收所述基站经由所述主服务小区的 E-PDCCH发送的第二调度 信息;
其中, 所述第一调度信息用于调度如下至少一种消息:
系统信息、 寻呼、 或多媒体广播组播业务单频网消息。
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