WO2012071911A1 - 多点协作传输的配置方法和系统 - Google Patents

多点协作传输的配置方法和系统 Download PDF

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Publication number
WO2012071911A1
WO2012071911A1 PCT/CN2011/078864 CN2011078864W WO2012071911A1 WO 2012071911 A1 WO2012071911 A1 WO 2012071911A1 CN 2011078864 W CN2011078864 W CN 2011078864W WO 2012071911 A1 WO2012071911 A1 WO 2012071911A1
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Prior art keywords
measurement
information
network side
side device
comp
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PCT/CN2011/078864
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English (en)
French (fr)
Inventor
孙云锋
郭森宝
陈艺戬
张晨晨
李儒岳
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中兴通讯股份有限公司
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Publication of WO2012071911A1 publication Critical patent/WO2012071911A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/0005Control or signalling for completing the hand-off
    • H04W36/0083Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/0085Hand-off measurements
    • H04W36/0088Scheduling hand-off measurements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B17/00Monitoring; Testing
    • H04B17/30Monitoring; Testing of propagation channels
    • H04B17/309Measuring or estimating channel quality parameters

Definitions

  • the present invention relates to the field of multipoint coordinated transmission, and in particular to a configuration method and system for coordinated multipoint transmission.
  • LTE Long-Term Evolution
  • OFDM Orthogonal Frequency Division Multiplexing
  • the LTE-A system has no processing gain, and there is almost no interference problem in the cell because of the complete frequency division orthogonality, but the interference at the cell edge. Processing is relatively tricky. At present, there are three main methods for handling LTE in the LTE area:
  • the method of randomizing random interference is generally used to reduce the influence of interference between cells in frequency hopping, time hopping, direct spreading or hopping. It has the advantage of no network planning and almost no need. Signaling support, but can only be said to reduce the interference, and has not been fundamentally eliminated.
  • the method of canceling the interference cancellation can use some algorithms to eliminate the interference, but generally requires additional physical entities, such as multi-antenna technology, to complete the better elimination of the interference. Sometimes these conditions may not be Satisfy.
  • Interference coordination The method of interference coordination (avoidance) is to exchange some information between cells, and use some algorithms to make each cell automatically select appropriate resources according to the feedback information of other cells and its own situation. Transmitting, so as to achieve efficient use of inter-cell resources, and minimize the opportunity of resource collision and utilization between cells, and finally achieve the improvement of cell edge performance, which emphasizes avoiding inter-cell contention using the same time-frequency. Resources cause confusion. Since the antenna distance of the cell edge users is not much different from that of multiple neighboring cells, the use of the transmit antennas of multiple cells to achieve higher capacity and reliable transmission of the wireless link at the cell edge has become a research focus.
  • Multi-point coordinated transmission refers to dynamic cooperation between multiple nodes that are independent of each other in physical location, where the nodes can be a cell, a base station, a Relay, and a Radio Remote Unit (RRU). ), and indicate that the serving cell in the CoMP refers to a cell that transmits a PDCCH (Physical Downlink Control Channel) for the coordinated user.
  • PDCCH Physical Downlink Control Channel
  • R10 CoMP Collaboration a set (a node that directly or indirectly participates in a user's CoMP transmission;), a CoMP transmission set (a node that actually participates in a PDSCH (Physical Downlink Share Channel) data transmission), a CoMP measurement set (the UE needs to measure and The node that reports the channel information between the user and the UE may select a part of the node to report.
  • the feedback method of the baseline in R10 is: based on the method of each '', zone independent feedback as the baseline, and further consider the enhancement of feedback on this basis.
  • LTE R8 a series of measurement related processes and associated configuration parameters are defined to support handover and reconstruction of the radio link.
  • the IE item MeasConfig is configured in RRC (Radio Resource Control) signaling to configure the addition or deletion of measurement targets; the addition and deletion of configuration information on the top 4; and the measurement quantity, measurement interval, Information on the range of 4 ⁇ .
  • RRC Radio Resource Control
  • the basic concept of CoMP technology is defined in LTE R10, for the relationship between multiple sets, the corresponding CoMP processing flow for the above set and the configuration method of related parameters are not solved.
  • the present invention mainly provides a solution to this problem.
  • a primary object of the present invention is to provide a method and system for configuring multipoint coordinated transmission to at least solve the above problems.
  • a method for configuring coordinated multi-point transmission which includes: a network side device sends measurement configuration information to a radio resource control IE item and/or a downlink control channel of a radio resource control RRC signaling to The UE is configured to measure the channel by using the measurement configuration information, and send the measurement result to the network side device.
  • the foregoing measurement configuration information includes at least one of the following: a candidate measurement cell list, a multi-point coordinated transmission/reception CoMP measurement set, where the candidate measurement cell list is used to determine the CoMP measurement set, and the CoMP measurement set is used to determine the foregoing transmission set. And/or collaborative collections.
  • the step of the UE measuring the channel according to the measurement configuration information includes: the UE measuring the node in the candidate measurement cell list, and feeding back the part according to a predetermined rule. Or the measurement results of all nodes.
  • the method further includes: determining, by the network side device, the CoMP measurement set according to the foregoing measurement result.
  • the candidate measurement cell list configured by all users in the same cell is the same, or the candidate measurement cell list configured by different users in the same cell is different.
  • the measurement configuration information includes the foregoing CoMP measurement set, wherein the step of the UE measuring the channel by using the measurement configuration information, and transmitting the measurement result to the network side device includes: the UE performing channel on the cell in the CoMP measurement set The measurement of the status information, and the channel state information of all or part of the cells in the CoMP measurement set is reported according to a predetermined criterion.
  • the method further includes: determining, by the network side device, the foregoing transmission set and/or the cooperation set according to the foregoing measurement result and scheduling information.
  • the step of the UE transmitting the measurement result to the network side device includes: determining whether the measurement result satisfies the trigger condition in the trigger feedback mode and/or whether the feedback timing configuration is satisfied in the periodic feedback mode; The above measurement result is sent to the network side device.
  • the triggering condition includes: the result of the one or more cells after the foregoing measurement result is filtered by the layer 3 filter satisfies the threshold configured in the RRC message.
  • the information of the candidate cell list is the radio resource management RRM measurement set cell list information configured by the LTE R8/R9.
  • the UE reports the channel state information of all or a part of the cells in the CoMP measurement set according to one of the following criteria: if the CoMP measurement set is greater than 0 or 1, the channel information of the multiple cells is fed back; otherwise, only feedback
  • the channel information of the coordinated cells other than the foregoing primary serving cell in the CoMP measurement set, and/or the transmission mode corresponding to the indication feedback is joint processing or cooperative scheduling and cooperative beamforming, where the above m takes The value is 1 or 2.
  • the method further includes: the network side device signaling, by using the signaling, whether the UE feedbacks the phase correction indication information.
  • the step of the network side device notifying the UE whether to feed back the phase correction indication information by signaling includes at least one of: adding, in the physical dedicated control IE item of the RRC signaling, indication information indicating a feedback phase inter-site phase correction weight, and Notifying the UE whether to feed back the phase correction indication PCI information according to the configuration of the foregoing IE item; or adding the indication information to the PDCCH to dynamically indicate whether the UE needs to feed back PCI information; or, according to the subframe number or other coordinated cell and
  • the reference signal of the primary serving cell receives the power RSRP difference value, and cyclically notifies the UE whether to feed back the phase correction indication information according to a predetermined criterion.
  • a configuration system for multi-point coordinated transmission which includes: a network side device and a user equipment UE that communicate with each other, wherein the network side device is configured to measure CoMP for coordinated multi-point transmission
  • the configuration information is sent to the user equipment UE.
  • the UE is configured to measure the channel according to the measurement configuration information, and send the measurement result to the network side device.
  • the foregoing UE includes: a first measurement unit, configured to perform channel state information measurement on a cell in the CoMP measurement set when the measurement configuration information is the CoMP measurement set; and the first transmission unit is configured to follow a predetermined criterion The channel state information of all or part of the cells in the CoMP measurement set is reported.
  • the network side device includes: a first processing unit, configured to determine the foregoing transmission set and/or cooperation set according to the foregoing measurement result and scheduling information.
  • the foregoing UE includes: a second measurement unit, configured to: when the measurement configuration information is the candidate measurement cell list, measure the nodes in the candidate measurement cell list, and feed back measurement results of some or all nodes according to a predetermined rule.
  • the network side device includes: a second processing unit, configured to determine the CoMP measurement set by using the foregoing measurement result.
  • the UE further includes: a determining unit, configured to determine whether the measurement result satisfies the trigger condition in the trigger feedback mode and/or whether the feedback timing configuration is satisfied in the periodic feedback mode; the notification unit is configured to set the measurement result when satisfied Send to the above network side device.
  • the UE is configured to measure the channel according to the measurement configuration information, and send the measurement result to the network side device. In the present invention, the UE performs channel measurement on the received CoMP measurement configuration information, so that the network side device can determine the CoMP measurement set or the transmission set according to the measurement result, thereby solving the problem that the channel measurement report cannot be performed in the prior art.
  • FIG. 1 is a preferred flowchart of a configuration method of multipoint coordinated transmission according to an embodiment of the present invention
  • FIG. 2 is another embodiment of a configuration method of coordinated multipoint transmission according to an embodiment of the present invention. A preferred flowchart; FIG.
  • FIG. 3 is a schematic diagram of a preferred configuration of a configuration system for coordinated multi-point transmission according to an embodiment of the present invention.
  • 1 is a preferred flowchart of a method for configuring coordinated multi-point transmission according to an embodiment of the present invention, which includes the following steps:
  • the network side device sends the measurement configuration information to the user equipment UE by using the radio resource control IE item of the RRC signaling and/or the downlink control channel; S104.
  • the UE performs measurement on the channel by using the measurement configuration information, and sends the measurement result to the network side device.
  • the network side needs to determine the manner of cooperation according to the measurement result of the channel by the UE, and performs coordinated scheduling according to the channel information. Therefore, the UE needs to provide corresponding reporting information.
  • the network side needs to configure the measurement area and report the trigger mode.
  • the UE performs channel measurement reporting by using the measured configuration information of the CoMP, so that the network side device can determine the CoMP measurement set or the transmission set/collaboration set according to the measurement result, thereby solving the problem in the prior art.
  • the problem of the above set is confirmed, and the effect of efficiently performing multipoint coordinated transmission is achieved.
  • the foregoing CoMP measurement set refers to a set for instructing a UE to perform channel state information measurement, where the channel state information includes a channel quality, a channel corresponding weight or weight index, and rank information.
  • the transport set/collaboration set is a set corresponding to only the actual CoMP cooperation.
  • the set corresponding to the CoMP cooperation corresponds to the transport set; in the cooperative scheduling and the cooperative beamforming mode, the CoMP collaboration corresponds to The collection is a collaborative collection.
  • the measurement configuration information includes at least one of the following: a candidate measurement cell list, a CoMP measurement set, where the candidate measurement cell list is used to determine the CoMP measurement set, and the CoMP measurement set is used to determine the Transfer collections and/or collaboration collections.
  • the present invention can be applied to multiple scenarios by different measurement configuration information.
  • the measurement configuration information includes the candidate measurement cell list, where the step of measuring, by the UE, the measurement configuration information on the channel includes: the UE is in the candidate measurement cell list.
  • the node performs measurements and feeds back measurements of some or all of the nodes according to predetermined rules.
  • the method further includes: determining, by the network side device, the CoMP measurement set according to the measurement result.
  • the network side can accurately determine the CoMP measurement set by the above measurement and the above-mentioned method.
  • the candidate measurement cell list configured by all users of the same cell is the same, or the candidate measurement cell list configured by different users of the same cell is different.
  • the applicability of the present invention is increased by the above-described configuration.
  • the measurement configuration information includes the CoMP measurement set
  • the step of the UE measuring the channel according to the measurement configuration information, and transmitting the measurement result to the network side device includes: The UE performs channel state information measurement on the cell in the CoMP measurement set, The channel state information of all or part of the cells in the CoMP measurement set is reported according to a predetermined criterion.
  • the method further includes: determining, by the network side device, the transmission set and/or the cooperation set by using the measurement result and the scheduling information.
  • the network side can accurately determine the transmission set and/or the cooperation set through the above measurement and the above-mentioned methods.
  • the step of the UE transmitting the measurement result to the network side device includes: determining, by the UE, whether the measurement result satisfies a trigger condition in a trigger feedback mode and/or whether the feedback timing is satisfied in a periodic feedback mode. If the configuration is satisfied, the measurement result is sent to the network side device.
  • the transmission efficiency is improved by the above-described judging method.
  • the triggering condition includes: the result that the one or more cells exist after the measurement result is filtered by the layer 3 filter satisfies a threshold configured in the RRC message.
  • the information of the candidate cell list is radio resource management RRM measurement set cell list information configured by LTE R8/R9.
  • the UE reports channel state information of all or a part of cells in the CoMP measurement set according to one of the following criteria: If the CoMP measurement set is greater than 0 or 1, channel information of multiple cells is performed. Feedback; otherwise, only the channel information of the primary serving cell in the CoMP measurement set is fed back, wherein the primary serving cell is a cell corresponding to the UE receiving physical downlink control information; or is added on the physical downlink control channel. And m bits, used to indicate whether to feed back channel information of other coordinated cells other than the primary serving cell in the CoMP measurement set, and/or to indicate that the corresponding transmission mode is a joint processing or cooperation Scheduling and cooperative beamforming, wherein the m takes a value of 1 or 2.
  • the transmission efficiency is improved by the above reporting method.
  • the method further includes: the network side device notifying the Whether the UE feeds back the phase correction indication information.
  • the network side device can better acquire the required data by using the foregoing notification manner.
  • the step of the network side device notifying whether the UE feeds back the phase correction indication information by signaling includes at least one of: adding a feedback phase inter-site phase correction right in the physical dedicated control IE item of the RRC signaling Instructing the value, and notifying the UE whether to feed back the PCI (Phase Correction Indicator) information according to the configuration of the IE, or adding the indication information to the PDCCH to dynamically indicate whether the UE is Need to feedback PCI information; or, And according to the subframe number or the RSRP (Reference Signal Received Power) difference between the other coordinated cell and the primary serving cell, periodically notify the UE whether to feed back the phase correction indication information according to a predetermined criterion.
  • PCI Phase Correction Indicator
  • the method further includes: determining, by the network side device, at least one of the following according to the measurement result: a CoMP measurement set, a transmission set, or a collaboration set.
  • the IE item information of the candidate cell list may be supplemented in the Radio Resource Control IE item of the RRC signaling.
  • CandidateCoMPMeasurementCellList SEQUENCE (SIZE (1-maxCellCoMPMeas)) OF PhysCellldRange, where maxCellCoMPMeas represents the number of cells in the largest candidate cell list.
  • the feedback of the measurement result in the LTE-A is fed back by means of a triggering manner and/or a periodic reporting manner, specifically: adding a class corresponding to the reporting trigger of the CoMP measurement in the TriggerType of the ReportConfigEUTRA IE item or Several types of threshold configuration information; and/or configuration information corresponding to CoMP measurement feedback is added when configured as periodic feedback.
  • the network side configures a candidate measurement cell list for each UE or all UEs, and the UE selects some or all nodes to perform measurement reporting according to the candidate measurement 'J, the area list, and uses the reservation-based principle to determine the CoMP measurement set.
  • the UE measures the candidate measurement cell list, and the feedback content is RSRP (Reference Signal Received Power) or RSRQ (Reference Signal Received Quality) or RSSI (Received Signal Strength Indicator). ) Information.
  • the measurement configuration information required for determining the transmission set/collection set means that the network side configures a CoMP measurement set for each UE, and the UE performs CSI information measurement and reporting on the CoMP measurement set, and the reported CSI information is pre-coded.
  • the weight or weight index information, the channel quality indicator information, and the rank information may further include: a small interval phase correction weight information.
  • the network side configures a transport node set/collaboration set from the collaboration set, and the transport node/collaboration set is transparent to the UE.
  • the measurement result feedback of the candidate cell list is triggered by the RRC message and the trigger threshold to perform aperiodic feedback or when the periodic feedback is configured to increase the periodic feedback according to the feedback interval configuration; the measurement result of the cooperation set is periodically dynamic Feedback, with acyclic feedback as an aid.
  • the feedback trigger condition of the measurement result of the candidate cell list refers to triggering feedback on the CoMP measurement when the result of one or more cells in the result of filtering by the layer 3 filter satisfies the threshold configured in the RRC message.
  • the network side configures the CoMP measurement cell list information for the UE, and the information may be configured in the cqi-ReportConfig of the physical layer dedicated configuration IE item.
  • the update of the CoMP measurement set is determined in a non-periodic manner by measurements based on feedback from the candidate cell list.
  • the candidate measurement cell list is a set of measurement cells defined by RRM (Radio Resource Management) configured in LTE R8 and R9.
  • RRM Radio Resource Management
  • the network side initiates a cooperation request to the other coordinated cells according to the channel information of each cell in the CoMP measurement set list fed back by the UE, where the cooperation request includes the resource scheduling information of the user, and the recommended weight information.
  • the coordinated cell performs cooperative scheduling/beamforming or joint processing based on its own load and scheduling conditions.
  • the network side needs to configure a format for channel information feedback of members in the CoMP measurement set, and signal whether to feed back the phase correction indication information
  • the method for signaling whether to feed back the phase correction indication information includes: In the physical-specific control IE item, the indication information indicating the phase-corrected weight between the feedback sites is added, and the configuration of the IE item implicitly notifies whether to feed back the PCI information; or the indication information is added to the PDCCH to dynamically indicate whether The PCI information needs to be fed back; or, the implicit information is used to notify whether to feed back the PCI information: according to the subframe number or the RSRP difference between the other coordinated cell and the primary serving cell, the notification is cyclically performed according to the defined criteria.
  • the UE can assume that when the PCI information needs to be fed back, the feedback is performed according to the method of JP (Joint Process), otherwise it is fed back in the manner of CSCB.
  • the network side device may be an evolved base station (eNB), a relay (relay), a pico cell
  • Example 1 a configuration method for multi-point coordinated transmission is presented.
  • the coordinated multi-point transmission is mainly divided into three parts: (1) configuration of multi-point cooperation parameters, wherein The configuration of the multipoint coordination parameters includes two aspects: a parameter configuration required for determining a CoMP measurement set and a parameter configuration for determining a transmission set.
  • the configuration of the multipoint coordination parameters includes two aspects: a parameter configuration required for determining a CoMP measurement set and a parameter configuration for determining a transmission set.
  • the feedback corresponds to two aspects: the measurement parameter used to determine the CoMP measurement set in (1) is measured, and feedback is performed.
  • the operation performed by the network side according to the feedback includes: determining a CoMP measurement set according to the first type of feedback, and determining a transmission set according to the second type of feedback.
  • Figure 2 shows the process flow of CoMP transmission. The configuration method of the multi-point cooperation parameter in each step is given based on the process flow, where the CoMP configuration information includes configuration information used to indicate UE measurement and indication feedback mode configuration information. As shown in Figure 2, the processing flow of CoMP transmission includes the following steps:
  • the monthly service cell notifies the UE of the CoMP configuration information by using the RRC signaling;
  • S204 the UE performs RSRP/RSRQ/RSSI measurement according to the candidate cell list;
  • the monthly service cell determines the CoMP measurement set according to the UE's upper limit of the measurement result
  • the monthly service area configures a CoMP measurement set by using PhysicalConfigDedicated in the radio resource control information in the RRC signaling.
  • the UE measures channel information of the cell in the CoMP measurement set cell list.
  • the UE feeds back, to the serving cell, channel state information of each cell in the cooperation set.
  • the serving cell sends a CoMP collaboration request to the coordinated cell.
  • S218 The UE performs coordinated multi-point transmission with the coordinated cell.
  • S220 The UE performs coordinated multi-point transmission with the serving cell.
  • the configuration manner of the candidate cell list includes: Mode 1: The network side configures the same candidate cell list for all users. Based on this mode, the preferred candidate cell list is the same as the R8 configured RRM measurement set. The cell that does not need to be measured is indicated by the blacklist cell list. In this manner, the candidate cell list is a cell-specific set.
  • Manner 2 The CoMP user is configured to perform candidate cell list by using RRC signaling. In this manner, the IE item information of the candidate cell list is supplemented in the radio resource control IE item of the RRC signaling.
  • CandidateCoMPMeasurementCellList SEQUENCE (SIZE (1 ⁇ maxCellCoMPMeas)) OF PhysCellldRange, where maxCellCoMPMeas represents the number of cells in the largest candidate cell list.
  • the trigger mechanism of the candidate cell list measurement result is increased.
  • a trigger trigger event is newly defined in the triggerType of the ReportConfigEUTRA IE item, and the threshold corresponding to the trigger event is as follows. In eventAx, x is a positive integer indicating the trigger threshold for CoMP measurement feedback.
  • eventAx SEQUENCE ⁇ ax-Threshold ThresholdEUTRA
  • the UE After receiving the candidate cell list configuration information, the UE measures the RSRP/RSRQ/RSSI of each cell in the candidate cell list. When the measurement result of other cells outside the one or more serving cells meets the above threshold condition of the RRC signaling configuration, the reporting of the CoMP measurement set measurement result is triggered. The measurement result of the cell that meets the condition is reported to the network side.
  • the timer configuration of the set of CoMP measurements may follow the timer configuration mode defined in the earlier version of LTE. If the report of the CoMP measurement set measurement result is not triggered within the timing duration, the report is reported when the timing arrives, and the timing is also performed. Cleared to zero.
  • the network side sets the reporting period for periodic reporting by configuring the reporting interval.
  • the network side determines the CoMP measurement set according to the measurement result of the UE semi-static report. After the network side determines the CoMP measurement, it is further required to notify the UE of the cell list in the CoMP measurement set, and the configuration information of the CoMP measurement set is carried in the IE item PhysicalConfigDedicated (dedicated physical layer configuration) of the RRC signaling in the RRC signaling. For example, based on the UE's selection of the candidate cell list by means of a bitmap: CoMPCooperateCellList BIT STRING (SIZE (maxCellCoMPMeas)). This information can be further loaded in the CQI-ReportConfig IE item.
  • the update of the CoMP measurement set is triggered by the network side according to the RSRP result information reported by the UE.
  • the UE After receiving the CoMP measurement set information, the UE measures channel state information of the CoMP measurement set cell list. And report it.
  • the optimal codebook index of the primary month cell is fed back to the primary serving cell, and the CQI corresponding to the feedback codebook is received; for other cells outside the primary month cell, the UE At the same time, the index of the optimal codebook and/or the index of the worst codebook are fed back, the phase correction information between the coordinated cells and the CQI of each coordinated cell; and the RI information.
  • the UE when measuring the CoMP measurement set, if the CoMP measurement set is greater than 0 or 1, the UE only feeds back the channel information of the primary serving cell, otherwise, the UE feeds back the channel information of the primary serving cell and other cells in the CoMP measurement set. Or adding an m bit to the physical downlink control channel, indicating whether to feed back channel information of other coordinated cells outside the primary serving cell, and/or whether the corresponding transmission mode is joint processing or cooperative scheduling and cooperative beamforming; The value is 1 or 2.
  • the network side needs to configure a format for channel information feedback of members in the CoMP measurement set, and signal whether to feed back the phase correction indication information
  • the method for signaling whether to feed back the phase correction indication information includes: The indication information indicating the phase correction weight between the feedback sites is added in the IE item of the physical control, and the configuration of the IE item implicitly notifies whether to feed back the PCI information; or Adding the indication information to the PDCCH, for example, adding FTI (feedback type indicator) information to dynamically indicate whether the PCI information needs to be fed back; or, in an implicit manner, notifying whether to feed back PCI information: according to the subframe number or The RSRP difference between the other coordinated cell and the primary serving cell is cyclically notified according to the defined criteria.
  • FTI feedback type indicator
  • the UE can assume that when the PCI information needs to be fed back, the feedback is performed according to the manner of JP, otherwise it is fed back according to the mode of CSCB. Further, when it is required to feed back the PCI between different nodes, and the channel information of other cells is fed back on the PUSCH, the PCI information and the channel information of other cells are fed back in the same subframe; when the channel information of other cells is in the PUCCH When the feedback is performed, the PCI information is fed back on a specific independent subframe, or is fed back in the same subframe as the RI. The further network side determines the actual transmission aggregation node according to the channel state information fed back by the UE and the load condition of each cell.
  • Embodiment 2 the candidate cell list and the CoMP measurement set are both configured by the network side to the UE through RRC signaling.
  • the network side configures the candidate cell list only through RRC signaling.
  • the configuration of the candidate cell list is the same as that of the first embodiment.
  • the determination of the CoMP measurement set is determined by the terminal itself, and the network side configures the threshold configuration information of the channel information feedback in the cqi-ReportConfig of the physical layer dedicated configuration IE item, as shown below.
  • CQI-ReportConfig:: SEQUENCE ⁇ cqi-ReportModeAperiodic ENUMERATED ⁇ rml2, rm20, rm22, rm30, rm31, spare3, spare2, spare 1 ⁇ OPTIONAL,
  • the UE After receiving the configuration information, the UE only measures and feeds the channel of the cell in the candidate cell list that meets the threshold requirement.
  • the mechanism by which the UE determines whether to feed back measurement information and phase correction information of a plurality of cells is the same as that of Embodiment 1.
  • the cell channel state information that meets the threshold requirement is reported, where
  • the channel state information may be displayed channel state information (eg, an average correlation matrix R on a subband) or implicit channel state information (eg, PMI, CQI, RI, etc.).
  • the maxCellCoMPMeas bit bits or the bit bits of the corresponding cell number in the candidate cell list to indicate the cell list information corresponding to the channel state information that is fed back by means of a bitmap.
  • the network side determines the transmission node set, the transmission weight of each node, and the transmitted MCS according to the channel state information fed back by the UE. Based on the mode, the network side only configures a threshold or a predefined rule for the user, and the UE dynamically determines the relationship between the signal strength of each cell and the serving cell, and the threshold configured by the network side or other predetermined rules. It is determined whether the CSI information of one cell is fed back, or the CSI information of multiple cells.
  • FIG. 3 is a schematic structural diagram of a configuration system of a coordinated multi-point transmission according to an embodiment of the present invention, which includes: a network side device 302 and a user equipment UE 304 that communicate with each other, wherein the network side device
  • the 302 is configured to send the measurement configuration information of the multi-point coordinated transmission CoMP to the user equipment UE 304.
  • the UE 304 is configured to measure the channel according to the measurement configuration information, and send the measurement result to the network side device 302.
  • the UE performs channel measurement reporting by using the measured configuration information of the CoMP, so that the network side device can determine the CoMP measurement set or the transmission set/collaboration set according to the measurement result, thereby solving the problem in the prior art.
  • the UE 304 includes: a first measurement unit, configured to perform channel state information on a cell in the CoMP measurement set when the measurement configuration information is the CoMP measurement set
  • the first transmission unit is configured to report channel state information of all or a part of the cells in the CoMP measurement set according to a predetermined criterion.
  • the network side device 302 includes: a first processing unit, configured to determine the transmission set and/or the collaboration set according to the measurement result and the scheduling information.
  • the network side can accurately determine the transmission set and/or the cooperation set through the above measurement and the above-mentioned methods.
  • the UE 304 includes: a second measurement unit, configured to: when the measurement configuration information is the candidate measurement cell list, measure a node in the candidate measurement cell list, and feed back according to a predetermined rule. Measurement results for some or all of the nodes.
  • the network side device 302 includes: a second processing unit, configured to determine the CoMP measurement set according to the measurement result. In the preferred embodiment, the network side can accurately determine the CoMP measurement set by the above measurement and the above-mentioned method.
  • the UE 304 further includes: a determining unit, configured to determine whether the measurement result satisfies a trigger condition in a trigger feedback mode and/or a feedback timing configuration in a periodic feedback mode; The measurement result is sent to the network side device when satisfied.
  • the transmission efficiency is improved by the above-described judging method.
  • the triggering condition includes: the result that the one or more cells exist after the measurement result is filtered by the layer 3 filter satisfies a threshold configured in the RRC message.
  • the measurement configuration information includes at least one of the following: a candidate measurement cell list, the CoMP measurement set, where the candidate measurement cell list is used to determine the CoMP measurement set, and the CoMP measurement set is used to determine The set of transmissions and/or the set of collaborations.
  • the present invention can be applied to multiple scenarios by different measurement configuration information.
  • the candidate measurement cell list configured by all users of the same cell is the same, or the candidate measurement cell list configured by different users of the same cell is different.
  • the applicability of the present invention is increased by the above-described configuration.
  • the information of the candidate cell list is radio resource management RRM measurement set cell list information configured by LTE R8/R9.
  • the UE 304 reports channel state information of all or a part of cells in the CoMP measurement set according to one of the following criteria: If the CoMP measurement set is greater than 0 or 1, channel information for multiple cells Performing feedback; otherwise, only feedback channel information of the primary serving cell in the CoMP measurement set, where the primary serving cell receives physical downlink control information for the UE Or corresponding to the cell; or adding m bits on the physical downlink control channel, to indicate whether to feed back channel information of other coordinated cells except the primary serving cell in the CoMP measurement set, and/or And indicating that the transmission mode corresponding to the feedback is joint processing or cooperative scheduling and cooperative beamforming, where the value of m is 1 or 2.
  • the transmission efficiency is improved by the above-described method.
  • the method further includes: the network side device notifying the Whether the UE feeds back the phase correction indication information.
  • the network side device can better acquire the required data by using the foregoing notification manner.
  • the step of the network side device 302 notifying whether the UE feeds back the phase correction indication information by signaling includes at least one of: adding an indication feedback inter-site phase correction in a physical dedicated control IE item of the RRC signaling The indication information of the weight, and notifying the UE whether to feed back the PCI information according to the configuration of the IE item; or adding the indication information to the PDCCH to dynamically indicate whether the UE needs to feed back PCI information; or And, according to the subframe sequence number or the RSRP difference value of the other coordinated cell and the primary serving cell, periodically notify the UE whether to feed back the phase correction indication information according to a predetermined criterion.
  • the flexibility of the configuration is increased by the above notification method.
  • the network side device 302 determines at least one of the following according to the measurement result: a CoMP measurement set, a transmission set or a collaboration set.
  • a CoMP measurement set a CoMP measurement set
  • a transmission set a collaboration set.
  • the above modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices.
  • they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein.

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Description

多点协作传输的配置方法和系统 技术领域 本发明涉及了一种多点协作传输领域, 具体而言, 涉及一种多点协作传输 的配置方法和系统。 背景技术 随着 LTE ( Long-Term Evolution, 长期演进) -A需求的提出, 人们对小区 平均频谱效率和小区边缘频谱效率越来越重视, 相比较而言, 小区边缘的频谱 效率最受人们关注, 这主要是因为 LTE-A 系统的上下行都是以 OFDM ( Orthogonal Frequency Division Multiplexing, 正交频分复用)(或者以 OFDM 的某种变形) 为基本多址复用方式的频分系统, 与传统的以 CDMA 为基本多 址复用方式的无线通信系统不同, LTE-A系统没有处理增益, 小区内部因为完 全频分正交, 所以几乎没有千扰问题, 但在小区边缘处的千扰处理相对棘手。 目前 LTE中对小区边缘处千 4尤的处理主要有以下三种方法:
1 ) 千 4尤随机化 千扰随机化的方法一般釆用跳频, 跳时, 直扩或者跳码的方法在小区之间 减轻千扰的影响, 它的优点是无需网络规划, 几乎不需要信令的支持, 但是只 能说减轻了千扰, 并没有从根本上消除。
2 ) 千扰消除 千扰消除的方法虽然能使用某些算法消除千扰, 但是一般需要额外的物理 实体, 如多天线技术等, 才能完成千扰的比较好的消除, 有时这些条件可能并 不满足。
3 ) 千扰协调 (躱避) 千扰协调 (躱避) 的方法是通过交换小区间的一些信息, 使用某些算法使 得每个小区自动根据其他小区的反馈信息和自身的情况选择合适的资源进行 传输, 从而实现小区间资源的高效利用, 而尽量减轻小区间资源碰撞利用的机 会, 最终达到小区边缘性能的提升, 其强调尽量避免出现小区间争用相同时频 资源从而造成千扰。 由于小区边缘用户距离多个相邻小区的天线距离相差不 大, 因此利用多个小区的发射天线来实现小区边缘处无线链路的较高容量和可 靠传输就成为研究重点。 而在多点协作传输中, 还存在的一个问题是, 在同一个节点内部, 当存在 多节点协同服务的用户时, 就会出现同一个小区同时存在协同服务的目标用户 和非协同服务的目标用户。 两类不同的用户无论从控制信息设计方面还是数据 的发送方式, 信道的状态信息和质量信息方面都存在差异。 在 LTE R10已经进行了较为深入的研究, 但由于时间关系, 很多技术的设 计 被 简 4匕 。 最 终 除 了 兼 容 COMP ( Coordinated Multipoint Transmission/Reception , 多点十办作传输 /接) 的 CSI-RS ( Channel Status Information - Reference Signal, 信道状态信息参考信号) 的设计继续在 R10中 研究外, 其余技术都被推出到 R11及以后版本中研究。 在 LTE R10中,对 CoMP的一些基本概念进行了定义并定义了基线的反馈 方法。 多点协作传输是指在物理位置上相互独立的多个节点之间进行动态的协 作, 其中这里的节点可以为小区, 基站, Relay (中继), 及 RRU ( Radio Remote Unit, 射频拉远单元) 等, 同时指出在 CoMP中服务小区是指为协作用户发送 PDCCH ( Physical Downlink Control Channel, 物理下行控制信道) 的小区, 为 了支持 CoMP技术,在 R10中定义了下面的集合几个集合: CoMP协作集合(直 接或间接参与某用户 CoMP传输的节点;), CoMP传输集合 (实际参与某用户 PDSCH ( Physical Downlink Share Channel, 物理下行共享信道 )数据传输的节 点 ), CoMP 测量集合 ( UE 需要测量并对其与用户间的信道信息进行上报的 节点, UE可能选择部分节点进行上报)。 另外, 在 R10中基线的反馈方法为: 基于每 '』、区独立反馈的方法作为基线, 并在此基础上进一步考虑反馈的增强。 在 LTE R8中, 为了支持切换以及无线链路的重建, 定义了一系列测量相 关的处理过程以及相关的配置参数。 在 R8 中, 通过在 RRC ( Radio Resource Control , 无线资源控制) 信令中配置 IE项 MeasConfig , 来配置测量目标的添 加或删除; 上 4艮配置信息的添加、 删除; 以及测量数量, 测量间隔, 上 4艮范围 等信息。 虽然在 LTE R10中对 CoMP技术的基本概念进行了定义,但是对于多个集 合之间的关系, 针对上述集合定义对应的 CoMP处理流程, 以及相关参数的配 置方法并没有解决。 本发明主要针对该问题给出了一种解决方法。 发明内容 本发明的主要目的在于提供一种多点协作传输的配置方法和系统, 以至少 解决上述问题。 根据本发明的一个方面, 提供了一种多点协作传输的配置方法, 其包括: 网络侧设备通过无线资源控制 RRC信令的无线资源控制 IE项和 /或下行控制信 道将测量配置信息发送给用户设备 UE; 上述 UE 居上述测量配置信息对信 道进行测量, 并将测量结果发送给上述网络侧设备。 上述测量配置信息包括以下至少之一: 候选测量小区列表、 多点协作传输 /接收 CoMP测量集合, 其中, 上述候选测量小区列表用于确定上述 CoMP测 量集合, 上述 CoMP测量集合用于确定上述传输集合和 /或协作集合。 当上述测量配置信息包括上述候选测量小区列表, 其中, 上述 UE根据上 述测量配置信息对信道进行测量的步骤包括: 上述 UE对上述候选测量小区列 表中的节点进行测量, 并根据预定的规则反馈部分或全部节点的测量结果。 在 将测量结果发送给上述网络侧设备之后, 上述方法还包括: 上述网络侧设备根 据上述测量结果确定上述 CoMP测量集合。 同一小区的所有用户配置的候选测量小区列表相同, 或者, 同一小区的不 同用户配置的候选测量小区列表不同。 上述测量配置信息包括上述 CoMP测量集合, 其中, 上述 UE 居上述测 量配置信息对信道进行测量, 并将测量结果发送给上述网络侧设备的步骤包 括: 上述 UE对上述 CoMP测量集合内的小区进行信道状态信息的测量, 并按 照预定的准则对上述 CoMP测量集合内的全部或部分小区的信道状态信息进行 上报。 在将测量结果发送给上述网络侧设备之后, 上述方法还包括: 上述网络 侧设备根据上述测量结果及调度信息确定上述传输集合和 /或协作集合。 上述 UE将测量结果发送给上述网络侧设备的步骤包括: 上述 UE判断上 述测量结果在触发反馈方式下是否满足触发条件和 /或在周期性反馈方式下是 否满足反馈时序配置; 若满足, 则将上述测量结果发送给上述网络侧设备。 上述触发条件包括: 上述测量结果经过层 3滤波器滤波后存在一个或多个 小区的结果满足 RRC消息中配置的门限。 上述候选小区列表的信息为 LTE R8/R9配置的无线资源管理 RRM测量集 合小区列表信息。 上述 UE按照以下准则之一对上述 CoMP测量集合内的全部或部分小区的 信道状态信息进行上报: 如果上述 CoMP测量集合大于 0或 1 , 则对多个小区 的信道信息进行反馈; 否则, 只反馈上述 CoMP测量集合内的主服务小区的信 道信息,其中上述主服务小区为上述 UE接收物理下行控制信息所对应的小区; 或者在上述物理下行控制信道上增加 m个比特, 用于指示是否反馈上述 CoMP 测量集合内的除上述主服务小区之外的其他协作小区的信道信息, 和 /或, 用于 指示反馈所对应的传输模式为联合处理或者协作调度和协作波束赋形, 其中, 上述 m取值为 1或 2。 在上述网络侧设备通过 RRC信令的无线资源控制 IE项和 /或下行控制信道 将测量配置信息发送给用户设备 UE时, 还包括: 上述网络侧设备通过信令通 知上述 UE是否反馈相位校正指示信息。 上述网络侧设备通过信令通知上述 UE是否反馈相位校正指示信息的步骤 包括以下至少之一: 在上述 RRC信令的物理专用控制 IE项中增加指示反馈站 点间相位校正权值的指示信息,并根据上述 IE项的配置通知上述 UE是否反馈 相位校正指示 PCI信息; 或者, 在 PDCCH上增加上述指示信息, 用于动态指 示上述 UE是否需要反馈 PCI信息; 或者, 根据子帧序号或者其他协作小区与 主服务小区的参考信号接收功率 RSRP差值, 按照预定的准则循环地通知上述 UE是否反馈相位校正指示信息。 将测量结果发送给上述网络侧设备之后, 还包括: 上述网络侧设备根据上 述测量结果确定以下至少之一: CoMP测量集合、 传输集合或协作集合。 根据本发明的另一方面, 提供了一种多点协作传输的配置系统, 其包括: 相互通信的网络侧设备和用户设备 UE, 其中, 上述网络侧设备设置为将多点 协作传输 CoMP的测量配置信息发送给用户设备 UE; 上述 UE设置为根据上 述测量配置信息对信道进行测量, 并将测量结果发送给上述网络侧设备。 上述 UE包括: 第一测量单元, 设置为在上述测量配置信息为上述 CoMP 测量集合时, 对上述 CoMP测量集合内的小区进行信道状态信息的测量; 第一 传输单元,设置为按照预定的准则对上述 CoMP测量集合内的全部或部分小区 的信道状态信息进行上报。 上述网络侧设备包括: 第一处理单元, 设置为根据 上述测量结果及调度信息确定上述传输集合和 /或协作集合。 上述 UE包括: 第二测量单元, 设置为在上述测量配置信息为上述候选测 量小区列表时, 对上述候选测量小区列表中的节点进行测量, 并根据预定的规 则反馈部分或全部节点的测量结果。 上述网络侧设备包括: 第二处理单元, 设 置为 居上述测量结果确定上述 CoMP测量集合。 上述 UE还包括: 判断单元, 设置为判断上述测量结果在触发反馈方式下 是否满足触发条件和 /或在周期性反馈方式下是否满足反馈时序配置; 通知单 元, 设置为在满足时将上述测量结果发送给上述网络侧设备。 上述 UE设置为 根据上述测量配置信息对信道进行测量, 并将测量结果发送给上述网络侧设 备。 在本发明中, UE通过接收到的 CoMP的测量配置信息进行信道测量上 4艮, 使得网络侧设备可以根据测量结果确定 CoMP测量集合或传输集合, 从而解决 了现有技术中无法进行信道测量上报的问题, 从而可以准确地确定 CoMP测量 集合或传输集合, 有效地进行多点协作传输的效果。 附图说明 此处所说明的附图用来提供对本发明的进一步理解, 构成本申请的一部 分, 本发明的示意性实施例及其说明用于解释本发明, 并不构成对本发明的不 当限定。 在附图中: 图 1 是根据本发明实施例的多点协作传输的配置方法的一种优选的流程 图; 图 2是才艮据本发明实施例的多点协作传输的配置方法的另一种优选的流程 图; 图 3是根据本发明实施例的多点协作传输的配置系统的一种优选的结构示 意图。 具体实施方式 图 1 是才艮据本发明实施例的多点协作传输的配置方法的一种优选的流程 图, 其包括如下步骤:
S 102,网络侧设备通过 RRC信令的无线资源控制 IE项和 /或下行控制信道 将测量配置信息发送给用户设备 UE; S 104, 所述 UE 居所述测量配置信息对信道进行测量, 并将测量结果发 送给所述网络侧设备。 在多点协作传输中, 网络侧需要根据 UE对信道的测量结果确定协作的方 式, 并根据信道信息进行协作的调度, 为此需要 UE提供相应的上报信息。 为 了降低 UE的测量范围从而降低 UE的复杂度, 网络侧需要对测量区域, 上报 触发方式进行配置。 在本优选的实施例中, UE通过接收到的 CoMP的测量配 置信息进行信道测量上报, 使得网络侧设备可以根据测量结果确定 CoMP测量 集合或传输集合 /协作集合, 从而解决了现有技术中无法确认上述集合的问题, 进而达到了可以有效地进行多点协作传输的效果。 上述的 CoMP测量集合是指用于指示 UE进行信道状态信息测量的集合, 其中所述的信道状态信息包括信道质量、信道对应的权值或权值索引,秩信息。 传输集合 /协作集合是只实际 CoMP协作所对应的集合, 在联合处理( JP )方式 下, CoMP协作所对应的集合对应于传输集合; 在协作调度和协作波束赋形方 式下, CoMP协作所对应的集合为协作集合。 优选的, 所述测量配置信息包括以下至少之一: 候选测量小区列表、 CoMP 测量集合, 其中, 所述候选测量小区列表用于确定所述 CoMP测量集合, 所述 CoMP测量集合用于确定所述传输集合和 /或协作集合。 在本优选的实施例中, 通过不同的测量配置信息, 可以使得本发明可以应用于多个场景。 优选的, 当所述测量配置信息包括所述候选测量小区列表, 其中, 所述 UE 居所述测量配置信息对信道进行测量的步 4聚包括: 所述 UE对所述候选 测量小区列表中的节点进行测量, 并根据预定的规则反馈部分或全部节点的测 量结果。 在这种场景下, 在将测量结果发送给所述网络侧设备之后, 所述方法 还包括: 所述网络侧设备根据所述测量结果确定所述 CoMP测量集合。 在本优 选的实施例中,通过上述的测量和上 4艮方式,使得网络侧可以准确地确定 CoMP 测量集合。 优选的, 同一小区的所有用户配置的候选测量小区列表相同, 或者, 同一 小区的不同用户配置的候选测量小区列表不同。 在本优选的实施例中, 通过上 述的配置方式, 增加了本发明的适用性。 优选的, 所述测量配置信息包括所述 CoMP测量集合, 其中, 所述 UE才艮 据所述测量配置信息对信道进行测量, 并将测量结果发送给所述网络侧设备的 步骤包括:所述 UE对所述 CoMP测量集合内的小区进行信道状态信息的测量, 并按照预定的准则对所述 CoMP测量集合内的全部或部分小区的信道状态信息 进行上报。 在上述场景下, 在将测量结果发送给所述网络侧设备之后, 所述方 法还包括: 所述网络侧设备 居所述测量结果及调度信息确定所述传输集合和 /或协作集合。 在本优选的实施例中, 通过上述的测量和上 4艮方式, 使得网络侧 可以准确地确定传输集合和 /或协作集合。 优选的, 所述 UE将测量结果发送给所述网络侧设备的步骤包括: 所述 UE 判断所述测量结果在触发反馈方式下是否满足触发条件和 /或在周期性反馈方 式下是否满足反馈时序配置; 若满足, 则将所述测量结果发送给所述网络侧设 备。 在本优选的实施例中, 通过上述判断方式, 提高了传输效率。 优选的, 所述触发条件包括: 所述测量结果经过层 3滤波器滤波后存在一 个或多个小区的结果满足 RRC消息中配置的门限。 优选的,所述候选小区列表的信息为 LTE R8/R9配置的无线资源管理 RRM 测量集合小区列表信息。 优选的, 所述 UE按照以下准则之一对所述 CoMP测量集合内的全部或部 分小区的信道状态信息进行上报: 如果所述 CoMP测量集合大于 0或 1 , 则对 多个小区的信道信息进行反馈; 否则, 只反馈所述 CoMP测量集合内的主服务 小区的信道信息, 其中所述主服务小区为所述 UE接收物理下行控制信息所对 应的小区; 或者在所述物理下行控制信道上增加 m个比特, 用于指示是否反馈 所述 CoMP测量集合内的除所述主服务小区之外的其他协作小区的信道信息, 和 /或,用于指示反馈所对应的传输模式为联合处理或者协作调度和协作波束赋 形, 其中, 所述 m取值为 1或 2。 在本优选的实施例中, 通过上述上报方式, 提高了传输效率。 优选的 ,在所述网络侧设备通过 RRC信令的无线资源控制 IE项和 /或下行 控制信道将测量配置信息发送给用户设备 UE时, 还包括: 所述网络侧设备通 过信令通知所述 UE是否反馈相位校正指示信息。 在本优选的实施例中, 通过 上述通知方式, 使得网络侧设备可以更好地获取所需的数据。 优选的, 所述网络侧设备通过信令通知所述 UE是否反馈相位校正指示信 息的步骤包括以下至少之一: 在所述 RRC信令的物理专用控制 IE项中增加指 示反馈站点间相位校正权值的指示信息, 并根据所述 IE项的配置通知所述 UE 是否反馈 PCI ( Phase Correct Indicator, 相位校正指示)信息; 或者, 在 PDCCH 上增加所述指示信息, 用于动态指示所述 UE是否需要反馈 PCI信息; 或者, 根据子帧序号或者其他协作小区与主服务小区的 RSRP ( Reference Signal Received Power, 参考信号接收功率) 差值, 按照预定的准则循环地通知所述 UE 是否反馈相位校正指示信息。 在本优选的实施例中, 通过上述通知方式, 增加了配置的灵活性。 优选的, 将测量结果发送给所述网络侧设备之后, 还包括: 所述网络侧设 备才艮据所述测量结果确定以下至少之一: CoMP测量集合、 传输集合或协作集 合。 可以在 RRC信令的无线资源控制 IE项中补充候选小区列表的 IE项信息。 CandidateCoMPMeasurementCellList SEQUENCE (SIZE ( 1-maxCellCoMPMeas)) OF PhysCellldRange,其中 maxCellCoMPMeas表示最大候选小区列表中小区的 数目。 进一步的, LTE-A中对测量结果的反馈通过触发的方式和 /或周期性上报的 方式反馈, 具体为: 在 ReportConfigEUTRA IE项的 TriggerType中增加对应 于 CoMP 测量的上报触发所需要的一类或几类门限配置信息; 和 /或在配置为 周期性反馈时增加对 CoMP测量反馈相应的配置信息。 网络侧为每个 UE或全部 UE配置候选测量小区列表, UE根据候选测量 'J、 区列表, 基于预订的原则选择部分或全部节点进行测量上报, 用于网络侧确定 CoMP 测量集合。 UE 对候选测量小区列表进行测量, 反馈内容为 RSRP ( Reference Signal Received Power, 参考信号接收功率) 或 RSRQ ( Reference Signal Received Quality, 参考信号接收质量 )或 RSSI ( Received Signal Strength Indicator, 接收信号强度指示符) 信息。 进一步的, 用于确定传输集合 /协作集合所需的测量配置信息指, 网络侧为 每个 UE配置 CoMP测量集合, UE对 CoMP测量集合进行 CSI信息的测量和 上报, 上报的 CSI信息为预编码权值或权值索引信息, 信道质量指示信息及 秩信息, 进一步的还可以包括: 小区间相位校正权值信息。 网络侧从协作集合 中配置传输节点集合 /协作集合, 传输节点 /协作集合对 UE透明。 进一步的, 对候选小区列表的测量结果反馈由 RRC 消息及触发门限触发 进行非周期反馈或者在配置为周期性反馈时增加按照反馈间隔配置进行周期 反馈;对协作集合的测量结果釆用周期性动态反馈,并以非周期反馈作为辅助。 进一步的, 对候选小区列表的测量结果的反馈触发条件是指经过层 3滤波 器滤波后的结果中有一个或多个小区的结果满足 RRC 消息中配置的门限时, 触发对 CoMP测量的反馈。 进一步的网络侧为 UE配置 CoMP测量小区列表信息, 该信息可以配置在 物理层专用配置 IE项的 cqi-ReportConfig中。
CoMP测量集合的更新釆用非周期的方式, 由基于候选小区列表的反馈的 测量结果确定。 在 LTE-A中为了前向兼容, 候选测量小区列表为 LTE R8及 R9中配置的 RRM (无线资源管理) 定义的测量小区集合。 进一步的, 网络侧根据 UE反馈的 CoMP测量集合列表中各小区的信道信 息, 对其他协作小区发起协作请求, 协作请求中包括用户的资源调度信息, 推 荐权值信息。 协作小区基于自身的负载及调度情况, 进行协作调度 /波束赋形 或者联合处理。 进一步的, 网络侧需要配置对 CoMP测量集合中成员的信道信息反馈的格 式, 用信令通知是否反馈相位校正指示信息, 用信令通知是否反馈相位校正指 示信息的方法包括: 在 RRC信令的物理专用控制 IE项中增加指示反馈站点间相位校正权值的 指示信息, 并 居该 IE项的配置隐式地通知是否反馈 PCI信息; 或者, 在 PDCCH上增加所述指示信息, 以动态指示是否需要反馈 PCI信息; 或 者, 釆用隐式的方式通知是否反馈 PCI信息: 根据子帧序号或者其他协作小区 与主服务小区的 RSRP差值, 按照与定义的准则循环进行通知。 同时 UE可以假设当需要反馈 PCI信息时, 按照 JP ( Joint Process , 联合处 理) 的方式进行反馈, 否则按照 CSCB的方式反馈。 上述中,所述的网络侧设备可以是演进基站( eNB ), 中继( relay ), pico cell
(微基站;), femto cell (家庭基站) 等网络侧对应的无线接入节点。 实施例 1 在本优选的实施例中, 给出了一种多点协作传输的配置方法, 基于本发明 的配置方式, 多点协作传输主要分为三个部分: ( 1 ) 多点协作参数的配置, 其 中多点协作参数的配置包括两个方面: 用于确定 CoMP测量集合所需的参数配 置 以及 用于确定传输集合的参数配置。 (2 ) UE进行信道信息的反馈: 对应 于 ( 1 ), 反馈对应的分为两个方面: 才艮据 ( 1 ) 中的用于确定 CoMP测量集合 的配置参数进行测量, 并进行反馈 (第一类反馈 ) 以及 根据用于确定传输集 合的配置参数进行测量并进行反馈 (第二类反馈)。 ( 3 ) 网络侧根据反馈进 行的操作包括: 根据第一类反馈确定 CoMP测量集合, 根据第二类反馈确定 传输集合。 图 2给出了 CoMP 传输的处理流程示意图。下面基于该处理流程给出每个 步骤中多点协作参数的配置方法, 其中, CoMP配置信息包括用于指示 UE测 量的配置信息及指示反馈方式配置信息。 如图 2所示, CoMP 传输的处理流程包括如下步骤:
S202, 月艮务小区通过 RRC信令向 UE通知 CoMP配置信息; S204, UE按照候选小区列表进行 RSRP/RSRQ/RSSI 的测量;
S206, 如果结果中有一个或多个小区的测量结果满足 RRC 配置的触发条 件或者网络侧配置了周期性反馈模式, 进行 RSRP/RSRQ/RS SI的上报;
S208, 月艮务小区才艮据 UE对测量结果的上 4艮确定 CoMP测量集合;
S210 , 月艮务小 区通过 RRC 信令中 无线资源控制信息 中 的 PhysicalConfigDedicated配置 CoMP测量集合;
S212, UE对 CoMP测量集合小区列表中小区的信道信息进行测量;
S214, UE向服务小区反馈协作集合内各个小区的信道状态信息;
S216, 服务小区向协作小区发送 CoMP 协作请求;
S218, UE与协作小区进行多点协作传输; S220, UE与服务小区进行多点协作传输。 其中, 候选小区列表的配置方式包括: 方式 1 : 网络侧为所有的用户配置相同的候选小区列表, 基于该方式下, 优选的候选小区列表与 R8 配置的 RRM 测量集合相同。 并通过黑名单小区列 表指示不需要测量的小区, 这种方式下, 候选小区列表为 cell-specific集合。 方式 2: 通过 RRC 信令对 CoMP用户进行候选小区列表的配置。 在这种 方式下, 在 RRC信令的无线资源控制 IE项中补充候选小区列表的 IE项信息。 CandidateCoMPMeasurementCellList SEQUENCE (SIZE (1 ~ maxCellCoMPMeas)) OF PhysCellldRange, 其中 maxCellCoMPMeas表示最大 候选小区列表中小区的数目。 为了支持 UE根据测量结果触发的方式确定是否进行测量信息的反馈, 增 加候选小区列表测量结果上 4艮触发机制。 ReportConfigEUTRA IE 项的 triggerType 中新定义一种反馈触发事件, 及触发事件对应的门限, 如下所示, 其中 eventAx中, x为一正整数, 表示针对 CoMP测量反馈的触发门限。 eventld CHOICE {
eventAx SEQUENCE { ax-Threshold ThresholdEUTRA
},
hysteresis Hysteresis, timeToTrigger TimeToTrigger 或者 eventld CHOICE {
eventAx SEQUENCE { ax-Threshold 1 ThresholdEUTRA. ax-Threshold2 ThresholdEUTRA
ax-Thresholdn ThresholdEUTRA
},
hysteresis Hysteresis. timeToTrigger TimeToTrigger
UE 收到候选小区列表配置信息后, 对候选小区列表内各个小区的 RSRP/RSRQ/RSSI 进行测量。当一个或多个服务小区外的其他小区的测量结果 满足 RRC信令配置的上述门限条件时, 触发对 CoMP测量集合测量结果的上 报。 并将满足条件的小区的测量结果上报给网络侧。 对 CoMP测量的集合的定 时器配置可以沿用 LTE 早期版本中定义的定时器配置方式, 如果在定时时长 内一直没有触发对 CoMP测量集合测量结果的报告,则在定时到达时进行上报, 同时将定时器清零。 同时为了能够支持对 CoMP 测量集合结果的周期性上报方式, 在 triggerType 的周期性上 4艮方式中增加对 CoMP测量结果周期上 4艮的指示,如下 所示。 triggerType CHOICE { event SEQUENCE { eventld CHOICE {
}, hysteresis Hysteresis, timeToTrigger TimeToTrigger periodical SEQUENCE { purpose ENUMERATED { reportStrongestCells, reportCGI reportC oMPMeasurement)
} 网络侧通过配置报告间隔设置周期性上报时的上报周期。 网络侧根据 UE 半静态上报的测量结果, 确定 CoMP测量集合。 网络侧确定 CoMP测量后,进一步的需要将 CoMP测量集合中的小区列表 通知给 UE,对 CoMP测量集合的配置信息承载在 RRC信令中无线资源控制的 IE 项 PhysicalConfigDedicated (专用物理层配置) 中, 例如基于 UE对候选小 区列表上 4艮的基础上通过 bitmap 的方式指示: CoMPCooperateCellList BIT STRING (SIZE (maxCellCoMPMeas)). 该信息可以进一步 载在 CQI-ReportConfig IE 项中。 CoMP 测量集合的更新由网络侧根据 UE 上报的 RSRP结果信息非周期触发。
UE接收到 CoMP测量集合信息后, 测量 CoMP测量集合小区列表的信道 状态信息。 并进行上报。 当需要进行单小区、 多小区传输动态切换时, 对主服 务小区, 反馈主月艮务小区的最优码本索引, 反馈码本对应的 CQI; 对于主月艮 务小区外的其他小区, UE同时反馈最优码本的索引和 /或最差码本的索引, 协 作小区之间的相位校正信息以及每个协作小区的 CQI; 以及 RI信息。 进一步的, 在对 CoMP测量集合进行测量时, 如果 CoMP测量集合大于 0 或 1 , 则 UE 仅仅反馈主服务小区的信道信息, 否则, UE 反馈主服务小区及 CoMP测量集合内其他小区的信道信息。或者在物理下行控制信道中增加 m bit, 用于指示是否反馈主服务小区外其他协作小区的信道信息,和 /或反馈所对应的 传输模式为联合处理还是协作调度和协作波束赋形; 其中 m取值为 1或 2。 进一步的, 网络侧需要配置对 CoMP测量集合中成员的信道信息反馈的格 式, 用信令通知是否反馈相位校正指示信息, 用信令通知是否反馈相位校正指 示信息的方法包括: 在 RRC信令的物理专用控制 IE项中增加指示反馈站点间相位校正权值的 指示信息, 并 居该 IE项的配置隐式地通知是否反馈 PCI信息; 或者, 在 PDCCH上增加所述指示信息,例如增加 FTI( feedback type indicator: 反 馈指示)信息, 以动态指示是否需要反馈 PCI信息; 或者, 釆用隐式的方式通知是否反馈 PCI信息: 根据子帧序号或者其他协作小区 与主服务小区的 RSRP差值, 按照与定义的准则循环进行通知。 同时 UE可以假设当需要反馈 PCI信息时, 按照 JP的方式进行反馈, 否则 按照 CSCB的方式反馈。 进一步的, 当需要反馈不同节点之间的 PCI、 且其他小区的信道信息在 PUSCH上反馈时, 在同一个子帧上对 PCI信息与其他小区的信道信息进行反 馈; 当其他小区的信道信息在 PUCCH上进行反馈时, 将 PCI信息在特定的独 立子帧上进行反馈, 或者与 RI在同一子帧上进行反馈。 进一步的网络侧根据 UE反馈的信道状态信息以及各小区的负载情况, 确 定实际传输集合节点。 实施例 2 在实施例 1 中, 候选小区列表和 CoMP测量集合都是网络侧通过 RRC信 令配置给 UE的,在本实施例中,网络侧仅仅通过 RRC信令配置候选小区列表。 其中候选小区列表的配置方式与实施例 1相同。 而对于 CoMP测量集合的确定 由终端自己确定, 网络侧在物理层专用配置 IE项的 cqi-ReportConfig中配置信 道信息反馈的门限配置信息, 如下所示。
CQI-ReportConfig:: = SEQUENCE { cqi-ReportModeAperiodic ENUMERATED { rml2, rm20, rm22, rm30, rm31, spare3, spare2, spare 1 } OPTIONAL,
-- Need OR nomPDSCH-RS-EPRE-Of set INTEGER (- 1. 6), cqi-ReportPeriodic CQI-ReportPeriodic OPTIONAL
- Need ON
CoMPMultiCellFeedbackThreshold ENUMERATED {th 1 th2 thn} }
UE 在接收到该配置信息后, 只对候选小区列表中满足门限要求的小区的 信道进行测量和反馈。
UE 确定是否反馈多个小区的测量信息及相位校正信息的机制与实施例 1 目同。 在该实施例中, 当一个或多个服务小区外的其他小区的测量结果满足 RRC 信令配置的上述门限条件时或者满足周期反馈条件时, 对满足门限要求的小区 信道状态信息进行上报, 其中信道状态信息可以为显示的信道状态信息 (例如 子带上的平均相关矩阵 R ), 或者为隐式的信道状态信息 (例如 PMI, CQI, RI 等信息;)。 并用 maxCellCoMPMeas个 bit位或者候选小区列表中对应小区个数 的 bit位 通过 bitmap的方式指示反馈的信道状态信息所对应的小区列表信息。 网络侧根据 UE反馈的信道状态信息确定传输节点集合及各节点的传输权 值、 传输的 MCS等信息。 基于该模式下, 网络侧仅为用户配置一个门限或预定义的规则, 由 UE才艮 据各小区与服务小区信号强度的关系, 以及网络侧配置的门限 或者其他预定 于规则, 由 UE来动态确定反馈一个小区的 CSI信息, 还是多个小区的 CSI信 息。 实施例 3 图 3是根据本发明实施例的多点协作传输的配置系统的一种优选的结构示 意图, 其包括: 相互通信的网络侧设备 302和用户设备 UE 304 , 其中, 所述网 络侧设备 302用于将多点协作传输 CoMP的测量配置信息发送给用户设备 UE 304; 所述 UE 304用于根据所述测量配置信息对信道进行测量, 并将测量结果 发送给所述网络侧设备 302。 在本优选的实施例中, UE通过接收到的 CoMP的测量配置信息进行信道 测量上报, 使得网络侧设备可以根据测量结果确定 CoMP测量集合或传输集合 /协作集合, 从而解决了现有技术中无法确认上述集合的问题, 进而达到了可以 有效地进行多点协作传输的效果。 优选的, 所述 UE 304包括: 第一测量单元, 用于在所述测量配置信息为 所述 CoMP测量集合时,对所述 CoMP测量集合内的小区进行信道状态信息的 测量; 第一传输单元, 用于按照预定的准则对所述 CoMP测量集合内的全部或 部分小区的信道状态信息进行上报。在这种场景下,所述网络侧设备 302包括: 第一处理单元,用于才艮据所述测量结果及调度信息确定所述传输集合和 /或协作 集合。 在本优选的实施例中, 通过上述的测量和上 4艮方式, 使得网络侧可以准 确地确定传输集合和 /或协作集合。 优选的, 所述 UE 304包括: 第二测量单元, 用于在所述测量配置信息为 所述候选测量小区列表时, 对所述候选测量小区列表中的节点进行测量, 并根 据预定的规则反馈部分或全部节点的测量结果。 在这种场景下, 所述网络侧设 备 302包括:第二处理单元,用于根据所述测量结果确定所述 CoMP测量集合。 在本优选的实施例中, 通过上述的测量和上 4艮方式, 使得网络侧可以准确地确 定 CoMP测量集合。 优选的, 所述 UE 304还包括: 判断单元, 用于判断所述测量结果在触发 反馈方式下是否满足触发条件和 /或在周期性反馈方式下是否满足反馈时序配 置; 通知单元, 用于在满足时将所述测量结果发送给所述网络侧设备。 在本优 选的实施例中, 通过上述判断方式, 提高了传输效率。 优选的, 所述触发条件包括: 所述测量结果经过层 3滤波器滤波后存在一 个或多个小区的结果满足 RRC消息中配置的门限。 优选的, 所述测量配置信息包括以下至少之一: 候选测量小区列表、 所述 CoMP测量集合,其中,所述候选测量小区列表用于确定所述 CoMP测量集合, 所述 CoMP测量集合用于确定所述传输集合和 /或协作集合。在本优选的实施例 中, 通过不同的测量配置信息, 可以使得本发明可以应用于多个场景。 优选的, 同一小区的所有用户配置的候选测量小区列表相同, 或者, 同一 小区的不同用户配置的候选测量小区列表不同。 在本优选的实施例中, 通过上 述的配置方式, 增加了本发明的适用性。 优选的,所述候选小区列表的信息为 LTE R8/R9配置的无线资源管理 RRM 测量集合小区列表信息。 优选的, 所述 UE 304按照以下准则之一对所述 CoMP测量集合内的全部 或部分小区的信道状态信息进行上报: 如果所述 CoMP测量集合大于 0或 1 , 则对多个小区的信道信息进行反馈; 否则, 只反馈所述 CoMP测量集合内的主 服务小区的信道信息, 其中所述主服务小区为所述 UE接收物理下行控制信息 所对应的小区; 或者在所述物理下行控制信道上增加 m个比特, 用于指示是否 反馈所述 CoMP测量集合内的除所述主服务小区之外的其他协作小区的信道信 息, 和 /或, 用于指示反馈所对应的传输模式为联合处理或者协作调度和协作波 束赋形, 其中, 所述 m取值为 1或 2。 在本优选的实施例中, 通过上述上 4艮方 式, 提高了传输效率。 优选的, 在所述网络侧设备 302通过 RRC信令的无线资源控制 IE项和 / 或下行控制信道将测量配置信息发送给用户设备 UE时, 还包括: 所述网络侧 设备通过信令通知所述 UE是否反馈相位校正指示信息。在本优选的实施例中, 通过上述通知方式, 使得网络侧设备可以更好地获取所需的数据。 优选的, 所述网络侧设备 302通过信令通知所述 UE是否反馈相位校正指 示信息的步骤包括以下至少之一: 在所述 RRC信令的物理专用控制 IE项中增 加指示反馈站点间相位校正权值的指示信息, 并才艮据所述 IE 项的配置通知所 述 UE是否反馈 PCI信息; 或者, 在 PDCCH上增加所述指示信息, 用于动态 指示所述 UE是否需要反馈 PCI信息; 或者, 根据子帧序号或者其他协作小区 与主服务小区的 RSRP差值, 按照预定的准则循环地通知所述 UE是否反馈相 位校正指示信息。 在本优选的实施例中, 通过上述通知方式, 增加了配置的灵 活性。 优选的, 将测量结果发送给所述网络侧设备之后, 所述网络侧设备 302才艮 据所述测量结果确定以下至少之一: CoMP测量集合、 传输集合或协作集合。 显然, 本领域的技术人员应该明白, 上述的本发明的各模块或各步骤可以 用通用的计算装置来实现, 它们可以集中在单个的计算装置上, 或者分布在多 个计算装置所组成的网络上, 可选地, 它们可以用计算装置可执行的程序代码 来实现, 从而, 可以将它们存储在存储装置中由计算装置来执行, 并且在某些 情况下, 可以以不同于此处的顺序执行所示出或描述的步骤, 或者将它们分别 制作成各个集成电路模块, 或者将它们中的多个模块或步骤制作成单个集成电 路模块来实现。 这样, 本发明不限制于任何特定的硬件和软件结合。 以上所述仅为本发明的优选实施例而已, 并不用于限制本发明, 对于本领 域的技术人员来说, 本发明可以有各种更改和变化。 凡在本发明的 ^"神和原则 之内, 所作的任何修改、 等同替换、 改进等, 均应包含在本发明的保护范围之 内。

Claims

权 利 要 求 书
1. 一种多点协作传输的配置方法, 包括:
网络侧设备通过无线资源控制 RRC信令的无线资源控制 IE项和 /或 下行控制信道将测量配置信息发送给用户设备 UE;
所述 UE根据所述测量配置信息对信道进行测量, 并将测量结果发 送给所述网络侧设备。
2. 根据权利要求 1所述的方法, 其中, 所述测量配置信息包括以下至少之 一: 候选测量小区列表、 多点协作传输 /接收 CoMP测量集合, 其中, 所 述候选测量小区列表用于确定所述 CoMP测量集合,所述 CoMP测量集 合用于确定所述传输集合和 /或协作集合。
3. 根据权利要求 2所述的方法, 其中, 当所述测量配置信息包括所述候选 测量小区列表, 其中,
所述 UE根据所述测量配置信息对信道进行测量的步骤包括: 所述 UE对所述候选测量小区列表中的节点进行测量, 并 居预定 的规则反馈部分或全部节点的测量结果;
在将测量结果发送给所述网络侧设备之后, 所述方法还包括: 所述网络侧设备 -据所述测量结果确定所述 CoMP测量集合。
4. 根据权利要求 3所述的方法, 其中, 同一' J、区的所有用户配置的候选测 量小区列表相同, 或者, 同一小区的不同用户配置的候选测量小区列表 不同。
5. 根据权利要求 2所述的方法, 其中, 所述测量配置信息包括所述 CoMP 测量集合, 其中,
所述 UE根据所述测量配置信息对信道进行测量, 并将测量结果发 送给所述网络侧设备的步骤包括:
所述 UE对所述 CoMP测量集合内的小区进行信道状态信息的测量, 并按照预定的准则对所述 CoMP测量集合内的全部或部分小区的信道状 态信息进行上报;
在将测量结果发送给所述网络侧设备之后, 所述方法还包括: 所述网络侧设备根据所述测量结果及调度信息确定所述传输集合和 /或协作集合。
6. 根据权利要求 2至 5中任一项所述的方法, 其中, 所述 UE将测量结果 发送给所述网络侧设备的步骤包括:
所述 UE判断所述测量结果在触发反馈方式下是否满足触发条件和 / 或在周期性反馈方式下是否满足反馈时序配置;
若满足, 则将所述测量结果发送给所述网络侧设备。
7. 根据权利要求 6所述的方法, 其中, 所述触发条件包括: 所述测量结果 经过层 3滤波器滤波后存在一个或多个小区的结果满足 RRC消息中配置 的门限。
8. 根据权利要求 3或 4所述的方法,其中,所述候选小区列表的信息为 LTE R8/R9配置的无线资源管理 RRM测量集合小区列表信息。
9. 根据权利要求 5所述的方法, 其中, 所述 UE按照以下准则之一对所述 CoMP测量集合内的全部或部分小区的信道状态信息进行上报:
如果所述 CoMP测量集合大于 0或 1 , 则对多个小区的信道信息进 行反馈; 否则, 只反馈所述 CoMP测量集合内的主服务小区的信道信息, 其中所述主服务小区为所述 UE接收物理下行控制信息所对应的小区; 或者
在所述物理下行控制信道上增加 m个比特, 用于指示是否反馈所述 CoMP 测量集合内的除所述主服务小区之外的其他协作小区的信道信 息, 和 /或, 用于指示反馈所对应的传输模式为联合处理或者协作调度和 十办作波束赋形, 其中, 所述 m取值为 1或 2。
10. 根据权利要求 1所述的方法, 其中, 在所述网络侧设备通过 RRC信令的 无线资源控制 IE 项和 /或下行控制信道将测量配置信息发送给用户设备 UE时, 还包括:
所述网络侧设备通过信令通知所述 UE是否反馈相位校正指示信息。
11. 根据权利要求 10所述的方法, 其中, 所述网络侧设备通过信令通知所述 UE是否反馈相位校正指示信息的步骤包括以下至少之一: 在所述 RRC信令的物理专用控制 IE项中增加指示反馈站点间相位 校正权值的指示信息, 并 居所述 IE项的配置通知所述 UE是否反馈相 位校正指示 PCI信息; 或者,
在 PDCCH上增加所述指示信息, 用于动态指示所述 UE是否需要 反馈 PCI信息; 或者,
根据子帧序号或者其他协作小区与主服务小区的参考信号接收功率 RSRP差值,按照预定的准则循环地通知所述 UE是否反馈相位校正指示 信息。
12. 根据权利要求 1所述的方法, 其中, 将测量结果发送给所述网络侧设备 之后, 还包括:
所述网络侧设备根据所述测量结果确定以下至少之一: CoMP 测量 集合、 传输集合或协作集合。
13. —种多点协作传输的配置系统, 包括: 相互通信的网络侧设备和用户设 备 UE, 其中,
所述网络侧设备设置为将多点协作传输 CoMP的测量配置信息发送 给用户设备 UE;
所述 UE设置为根据所述测量配置信息对信道进行测量, 并将测量 结果发送给所述网络侧设备。
14. 根据权利要求 13所述的系统, 其中,
所述 UE包括:
第一测量单元, 设置为在所述测量配置信息为所述 CoMP测量集合 时, 对所述 CoMP测量集合内的小区进行信道状态信息的测量;
第一传输单元, 设置为按照预定的准则对所述 CoMP测量集合内的 全部或部分小区的信道状态信息进行上报;
所述网络侧设备包括:
第一处理单元, 设置为根据所述测量结果及调度信息确定所述传输 集合和 /或协作集合。
15. 根据权利要求 13所述的系统, 其中,
所述 UE包括: 第二测量单元, 设置为在所述测量配置信息为所述候选测量小区列 表时, 对所述候选测量小区列表中的节点进行测量, 并根据预定的规则 反馈部分或全部节点的测量结果;
所述网络侧设备包括:
第二处理单元,设置为 -据所述测量结果确定所述 CoMP测量集合。
16. 根据权利要求 14或 15所述的系统, 其中, 所述 UE还包括:
判断单元, 设置为判断所述测量结果在触发反馈方式下是否满足触 发条件和 /或在周期性反馈方式下是否满足反馈时序配置;
通知单元,设置为在满足时将所述测量结果发送给所述网络侧设备。
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