WO2014019168A1 - Procédé de mesure coordonné multipoint, station de base et équipement utilisateur - Google Patents

Procédé de mesure coordonné multipoint, station de base et équipement utilisateur Download PDF

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Publication number
WO2014019168A1
WO2014019168A1 PCT/CN2012/079505 CN2012079505W WO2014019168A1 WO 2014019168 A1 WO2014019168 A1 WO 2014019168A1 CN 2012079505 W CN2012079505 W CN 2012079505W WO 2014019168 A1 WO2014019168 A1 WO 2014019168A1
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WIPO (PCT)
Prior art keywords
comp
serving cell
measurement set
network element
signaling
Prior art date
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PCT/CN2012/079505
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English (en)
Chinese (zh)
Inventor
曾清海
张宏平
Original Assignee
华为技术有限公司
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201280016474.4A priority Critical patent/CN103858467B/zh
Priority to PCT/CN2012/079505 priority patent/WO2014019168A1/fr
Publication of WO2014019168A1 publication Critical patent/WO2014019168A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/022—Site diversity; Macro-diversity
    • H04B7/024—Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0032—Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
    • H04L5/0035—Resource allocation in a cooperative multipoint environment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/0632—Channel quality parameters, e.g. channel quality indicator [CQI]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0037—Inter-user or inter-terminal allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058—Allocation criteria
    • H04L5/006—Quality of the received signal, e.g. BER, SNR, water filling

Definitions

  • the present invention relates to the field of communications, and in particular, to a coordinated multi-point (CoMP) measurement method, a base station, and a user equipment (UE).
  • CoMP coordinated multi-point
  • UE user equipment
  • BACKGROUND With the respective development of mobile communication and broadband wireless access technologies, the services of the two are mutually infiltrated, in order to meet the demand for broadband of mobile communication and to cope with the challenge of broadband communication mobility, the third generation partner, Ji Ge 'J
  • the 3rd generation partnership project (3GPP) working group put forward higher performance requirements for communication systems, for example, for peak rate, peak spectral efficiency, cell average frequency efficiency, cell edge spectrum efficiency, and system bandwidth. High requirements, in order to meet these requirements, the introduction of carrier aggregation (CA), CoMP and other technologies.
  • CA carrier aggregation
  • CA technology can obtain larger bandwidth by aggregating multiple consecutive or non-contiguous component carriers, thereby improving peak data rate and system throughput, and also solving the problem of carrier spectrum discontinuity.
  • the UE can support multiple component carrier (CC) aggregations in the downlink and uplink respectively.
  • CC component carrier
  • the other component carriers are secondary component carriers, including an uplink secondary component carrier (UL SCC ) and a downlink secondary component carrier (DL SCC ).
  • the number of uplink and downlink secondary component carriers may be the same or different.
  • the downlink data service requirement is higher than the uplink, and the aggregation mode of the downlink secondary component carrier and the uplink secondary component carrier may be used.
  • the CA When the CA is configured, the UE and the network have only one RRC connection.
  • a serving cell When the RRC connection is established, re-established or switched, a serving cell provides non-access stratum (NAS) mobility information and Security input, the serving cell is called the primary serving cell (PCell).
  • the uplink of the PCell corresponds to the UL PCC
  • the downlink of the PCell corresponds to the DL PCC.
  • the other serving cell configured by the UE is called a secondary serving cell (SCell).
  • SCell secondary serving cell
  • the uplink of the SCell corresponds to the UL SCC
  • the downlink of the SCell corresponds to the DL SCC.
  • the DL SCC is more than the UL SCC
  • PCell and SCell are collectively referred to as a serving cell.
  • the CA supports SCell activation and deactivation. For example, when the UE's service demand for broadband is reduced or the SCell's radio conditions are poor, the base station can deactivate the SCell.
  • the UE does not listen to the physical downlink control channel (PDCCH) on the deactivated SCell, does not receive downlink data on the physical downlink shared channel (PDSCH), and does not send data or information on the physical uplink shared channel (PUSCH) and the physical uplink control channel (PUCCH).
  • PDCCH physical downlink control channel
  • PUSCH physical uplink shared channel
  • PUCCH physical uplink control channel
  • CSI channel state information
  • SRS sounding reference signal
  • the CoMP technology communicates with the UE by utilizing cooperation among a plurality of geographically separated network elements, thereby reducing interference of cell edge UEs and improving cell edge throughput.
  • the base station performs radio resource control (RRC) configuration to instruct the UE to perform channel state information (CSI) measurement and reporting, and coordinate resource allocation of multiple network elements participating in CoMP cooperation according to the CSI reported by the UE.
  • the network element may be, for example, a cell, a node corresponding to the cell (for example, a base station, a relay node), a remote radio head (RRH), and a radio remote unit (RRU).
  • Antenna ports, etc. can be collectively referred to as transmission points (TP).
  • an SCell In a CA scenario, if an SCell is configured to participate in CoMP transmission, the UE will stop its CSI measurement after the SCell is deactivated. However, the CSI measurement and reporting of the UE to other CoMP cooperative network elements will continue according to the RRC configuration. However, these measurements and reports are invalid, because in this case, the network does not schedule the CoMP cooperative network elements of the SCell, thereby causing waste of UE power and uplink signaling, resulting in uplink interference.
  • RRC signaling is used to de-configure the CSI measurement of the CoMP cooperative network element, each time the SCell is deactivated, RRC signaling needs to be used for reconfiguration, and the SCell deactivation is performed frequently.
  • the deactivation operation of the SCell is restricted, when the user traffic is temporarily low, and the SCell does not need to remain active, the The SCell is deactivated, which is detrimental to the power saving of the UE.
  • the CSI measurement of the CoMP cooperative network element is also configured by using the RRC signaling.
  • the RRC signaling needs to be used for reconfiguration.
  • the operation for the SCell is activated frequently. , will waste more RRC signaling overhead.
  • the embodiments of the present invention provide a CoMP measurement method, a base station, and a UE, to reduce RRC signaling overhead when stopping or starting CoMP communication for a serving cell configured to participate in CoMP transmission in a CA scenario.
  • a coordinated multi-point measurement method including: a base station transmitting a coordinated multi-point (CoMP) measurement set to a user equipment (UE), where the CoMP measurement set corresponds to a serving cell, and the CoMP measurement set includes a And the information about the serving cell and the information of the CoMP cooperative network element of the serving cell; the base station sends control signaling to the UE, where the control signaling is used to indicate that the UE stops or starts according to the CoMP measurement set.
  • Channel state information (CSI) measurement is performed on the CoMP cooperative network element of the serving cell.
  • CSI Channel state information
  • the serving cell is a secondary serving cell
  • the control signaling is deactivation signaling or activation signaling of the secondary serving cell
  • the deactivation signaling is used to instruct the UE to stop performing CSI measurement on the CoMP cooperative network element of the serving cell according to the CoMP measurement set, where the activation signaling is used to indicate that the UE starts to perform according to the CoMP measurement set.
  • the CoMP cooperative network element of the serving cell performs CSI measurement.
  • the control signaling is further used. Instructing the UE to stop or start performing CSI measurement on the secondary serving cell.
  • the information of the serving cell and the CoMP cooperative network element of the serving cell are combined with the first aspect to the second possible implementation manner of the first aspect.
  • the information includes one or any combination of the following: a cell index, a cell identity, or frequency information.
  • the CoMP measurement set further includes a CoMP measurement set identifier, in combination with the first aspect to one of the third possible implementation manners of the first aspect.
  • the CoMP measurement set further includes a channel quality indication (CQI) report configuration, where
  • the CQI reporting configuration includes one or any combination of the following: CQI, Precoding Matrix Indication (PMI), Precoding Type Indication (PTI), Rank Indication (RI).
  • control signaling is further used to indicate that the UE is configured according to the CoMP according to the first aspect to one of the fifth possible implementation manners of the first aspect
  • the set stops or starts to perform CSI measurement on the CoMP cooperative network element of the serving cell in a predetermined subframe.
  • the base station in combination with the first aspect to the first possible implementation manner of the first aspect, sends the CoMP measurement set to the UE by using dedicated signaling, where
  • the dedicated signaling includes a radio resource control connection reconfiguration message or a medium access control layer control cell (MAC CE).
  • MAC CE medium access control layer control cell
  • the control signaling is a MAC CE.
  • a coordinated multipoint measurement method including: a user equipment (UE) receives a coordinated multipoint (CoMP) measurement set sent by a base station, the CoMP measurement set corresponds to a serving cell, and the CoMP measurement set includes The information of the serving cell and the information of the CoMP cooperative network element of the serving cell; the UE receiving the control signaling sent by the base station, and stopping or starting the opposite according to the control signaling and the CoMP measurement set The CoMP cooperative network element of the serving cell performs channel state information (CSI) measurement.
  • CSI channel state information
  • the serving cell is a secondary serving cell
  • the control signaling is deactivation signaling or activation signaling of the secondary serving cell
  • the UE is configured according to Deactivating signaling and the CoMP measurement set stop performing CSI measurement on a CoMP cooperative network element of the serving cell, or the UE starts CoMP cooperation on the serving cell according to the activation signaling and a CoMP measurement set
  • the network element performs CSI measurement.
  • the control signaling is further used. Instructing the UE to stop or start performing CSI measurement on the secondary serving cell.
  • the information of the serving cell and the CoMP cooperative network element of the serving cell are combined with the second aspect to the second possible implementation manner of the second aspect
  • the information includes one or any combination of the following: a cell index, a cell identity, or frequency information.
  • the CoMP measurement set further includes a CoMP measurement set identifier.
  • the CoMP measurement set further includes a channel quality indicator (CQI) report configuration, where
  • the CQI reporting configuration includes one or any combination of the following: CQI, Precoding Matrix Indication (PMI), Precoding Type Indication (PTI), Rank Indication (RI).
  • the UE stops or starts to use the secondary service in a predetermined subframe.
  • the CoMP cooperative network element of the cell performs CSI measurement.
  • the UE receives the CoMP measurement set by using dedicated signaling, where the dedicated The signaling includes a radio resource control connection reconfiguration message or a medium access control layer control cell (MAC CE).
  • dedicated The signaling includes a radio resource control connection reconfiguration message or a medium access control layer control cell (MAC CE).
  • control signaling is a MAC CE.
  • a base station including: a sending unit, configured to send a coordinated multi-point (CoMP) measurement set to a user equipment (UE), where the CoMP measurement set corresponds to a serving cell, and the CoMP measurement set includes And the information about the serving cell and the information of the CoMP cooperative network element of the serving cell; the control unit, configured to generate control signaling, and send the control signaling to the UE by using the sending unit, where the control The signaling is used to instruct the UE to stop or start performing channel state information (CSI) measurement on the CoMP cooperative network element of the serving cell according to the CoMP measurement set.
  • CSI channel state information
  • the serving cell is a secondary serving cell
  • the control signaling is deactivation signaling or activation signaling of the secondary serving cell
  • the activation signaling is used to instruct the UE to stop performing CSI measurement on the CoMP cooperative network element of the serving cell according to the CoMP measurement set, where the activation signaling is used to indicate that the UE starts to perform according to the CoMP measurement set.
  • the CoMP cooperative network element of the serving cell performs CSI measurement.
  • the control signaling is further used. Instructing the UE to stop or start performing CSI measurement on the secondary serving cell.
  • the information of the serving cell and the CoMP cooperative network element of the serving cell includes one or any combination of the following: a cell index, a cell identity, or frequency information.
  • the CoMP measurement set further includes a CoMP measurement set identifier.
  • the CoMP measurement set further includes a channel quality indication (CQI) report configuration, where
  • the CQI reporting configuration includes one or any combination of the following: CQI, Precoding Matrix Indication (PMI), Precoding Type Indication (PTI), Rank Indication (RI).
  • control signaling is further used to indicate that the UE is configured according to the CoMP The set stops or starts to perform CSI measurement on the CoMP cooperative network element of the serving cell in a predetermined subframe.
  • the transmitting unit is further configured to send CoMP to the UE by using dedicated signaling, in combination with the third aspect to the sixth possible implementation manner of the third aspect,
  • the measurement set includes a radio resource control connection reconfiguration message or a medium access control layer control cell (MAC CE).
  • control signaling is a MAC CE.
  • a user equipment including: a receiving unit, configured to receive a coordinated multi-point (CoMP) measurement set sent by a base station, where the CoMP measurement set corresponds to a serving cell, and the CoMP measurement set includes The information of the serving cell and the information of the CoMP cooperative network element of the serving cell; the receiving unit is further configured to receive control signaling sent by the base station, and the measuring unit is configured to: according to the CoMP measurement set The serving cell and the CoMP cooperative network element of the serving cell perform CSI measurement; the control unit is configured to control, according to the control signaling and the CoMP measurement set, the measurement unit to stop or start CoMP cooperation on the serving cell The network element performs channel state information (CSI) measurement.
  • CoMP coordinated multi-point
  • the serving cell is a secondary serving cell
  • the control signaling is deactivation signaling or activation signaling of the secondary serving cell
  • the control list is The element is further configured to control, according to the deactivation signaling and the CoMP measurement set, the measurement unit to stop performing CSI measurement on a CoMP cooperative network element of the serving cell, or further used to perform measurement according to the activation signaling and CoMP
  • the set control unit performs the CSI measurement on the CoMP cooperative network element of the serving cell.
  • the control unit is further used to control The measuring unit stops or starts performing CSI measurement on the secondary serving cell.
  • the information of the serving cell and the CoMP cooperative network element of the serving cell are combined with the second possible implementation manner of the fourth aspect to the fourth aspect
  • the information includes one or any combination of the following: a cell index, a cell identity, or frequency information.
  • the CoMP measurement set further includes a CoMP measurement set identifier.
  • the CoMP measurement set further includes a channel quality indication (CQI) report configuration, in combination with the fourth aspect to the fourth possible implementation manner of the fourth aspect,
  • CQI reporting configuration includes one or any combination of the following: CQI, Precoding Matrix Indication (PMI), Precoding Type Indication (PTI), Rank Indication (RI).
  • control unit controls the measurement unit to stop or start to start in a predetermined subframe
  • the CoMP cooperative network element of the secondary serving cell performs CSI measurement.
  • the receiving unit by using dedicated signaling, receiving the CoMP measurement set,
  • the dedicated signaling includes a radio resource control connection reconfiguration message or a medium access control layer control cell (MAC CE).
  • the control signaling is a MAC CE.
  • a base station including a transmitter, a memory, and a processor respectively connected to the transmitter and the memory, wherein the memory stores a set of program codes and coordinated multiple points
  • a (CoMP) measurement set the CoMP measurement set corresponds to a serving cell, and the CoMP measurement set includes information of the serving cell and information of a CoMP cooperative network element of the serving cell; the processor invokes the memory
  • the program code stored in the following, is configured to: send, by using the transmitter, the CoMP measurement set to a user equipment (UE); generate control signaling, where the control signaling is used to indicate that the UE is according to the CoMP
  • the measurement set stops or begins to perform channel state information (CSI) measurement on the CoMP cooperative network element of the serving cell; the control signaling is sent to the UE by the transmitter.
  • CSI channel state information
  • a user equipment including a receiver, a memory, and a processor respectively connected to the receiver and the memory, wherein the memory stores a set of program codes, and the processor calls the memory
  • the stored program code is configured to: receive, by the receiver, a coordinated multi-point (CoMP) measurement set sent by a base station, where the CoMP measurement set corresponds to a serving cell, and the CoMP measurement set includes the service Information of the cell and information of the CoMP cooperative network element of the serving cell; receiving, by the receiver, control signaling sent by the base station; stopping or starting the service according to the control signaling and the CoMP measurement set
  • the CoMP cooperative network element of the cell performs channel state information (CSI) measurement.
  • CSI channel state information
  • a seventh aspect a computer program product, comprising a computer readable medium, comprising a program code for performing the first aspect, the second aspect, any one of the possible implementations of the first aspect, or A CoMP measurement method in any of the possible implementations of the second aspect.
  • the base station configures a CoMP measurement set for the serving cell (SCell or PCell) aggregated by the UE, where the CoMP measurement set includes information of the serving cell (SCell or PCell) and its CoMP cooperative network element.
  • SCell serving cell
  • PCell serving cell
  • the base station may notify the UE by using control signaling, so that the UE may stop performing CSI measurement on the CoMP cooperative network element of the SCell according to the CoMP measurement set; or when the PCell needs to stop CoMP communication, the base station The UE may be notified by control signaling, so that the UE may stop the PCell according to the CoMP measurement set
  • the CoMP cooperative network element performs CSI measurement.
  • the CoMP cooperative network element of the serving cell does not continue to perform CSI measurement according to the RRC configuration, which reduces invalid measurement and reporting, thereby reducing the consumption of the UE power and the waste of the uplink signaling.
  • the embodiment directly uses the control signaling to directly notify the UE to stop performing CSI measurement on the CoMP cooperative network element of the serving cell, and avoids the operation of reconfiguring by using RRC signaling when deactivating SCelK or PCell needs to stop CoMP communication. The overhead of the RRC signaling is reduced.
  • the embodiment directly uses the control signaling to directly notify the UE to start CSI measurement of the CoMP cooperative network element of the serving cell.
  • the operation of reconfiguring by using RRC signaling every time the SCell is activated (or the PCell rejoins the CoMP communication) is avoided, and the overhead of the RRC signaling is reduced.
  • FIG. 1 is a flowchart of a CoMP measurement method according to an embodiment of the present invention
  • FIG. 2 is a flowchart of another CoMP measurement method according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of a control signaling format according to an embodiment of the present invention
  • FIG. 4 is a schematic flowchart of a CoMP measurement method according to an embodiment of the present invention
  • FIG. 5 is a schematic flowchart of another CoMP measurement method according to an embodiment of the present invention
  • FIG. 7 is a schematic flowchart of a method for measuring a CoMP measurement according to an embodiment of the present invention
  • FIG. 8 is a schematic flowchart of a method for configuring a CoMP measurement set according to an embodiment of the present invention;
  • FIG. 9 is a schematic flowchart of still another method for configuring a CoMP measurement set according to an embodiment of the present invention.
  • FIG. 10 is a functional block diagram of a base station according to an embodiment of the present invention.
  • FIG. 11 is a schematic structural diagram of a base station according to an embodiment of the present disclosure
  • FIG. 12 is a functional block diagram of a UE according to an embodiment of the present disclosure
  • FIG. 13 is a schematic structural diagram of a UE according to an embodiment of the present invention.
  • FIG. 1 is a flowchart of a CoMP measurement method according to an embodiment of the present invention. As shown in the figure, the method includes the following steps:
  • the base station sends a CoMP measurement set to the UE, where the CoMP measurement set corresponds to a serving cell, and the CoMP measurement set includes information about the serving cell and information of a CoMP cooperative network element of the serving cell.
  • the base station sends control signaling to the UE, where the control signaling is used to instruct the UE to stop or start performing CSI measurement on a CoMP cooperative network element of the serving cell according to the CoMP measurement set.
  • the serving cell is a serving cell configured to participate in CoMP communication.
  • the CoMP measurement is a measurement performed by the UE for the purpose of CoMP operation, and is performed on one or more CoMP cooperative network elements or network elements that may become CoMP cooperative network elements, including but not limited to CSI measurement, radio resource management (RRM) measurement, signal to interference plus noise ratio (SINR) measurement, etc., may be based on cell specific reference signal (CRS) or channel state information Channel state information reference signal (CSI-RS).
  • RRM radio resource management
  • SINR signal to interference plus noise ratio
  • CRS cell specific reference signal
  • CSI-RS channel state information Channel state information reference signal
  • the network may also perform measurements based on uplink signals, such as based on a sounding reference signal (SRS), a demodulation reference signal (DMRS), and the like.
  • SRS sounding reference signal
  • DMRS demodulation reference signal
  • the embodiment of the present invention further provides a CoMP measurement method.
  • the execution body of the method is a UE, and the method includes the following steps:
  • the UE receives a CoMP measurement set sent by the base station, where the CoMP measurement set corresponds to a serving cell, and the CoMP measurement set includes information about the serving cell and information of a CoMP cooperative network element of the serving cell.
  • the UE receives the control signaling sent by the base station, and stops or starts to perform channel state information CSI measurement on the CoMP cooperative network element of the serving cell according to the control signaling and the CoMP measurement set.
  • the serving cell is a serving cell configured to participate in CoMP communication. And each service cell corresponds to a CoMP measurement set. And the correspondence between the serving cell and the CoMP measurement set may be determined according to the cell index, the cell identifier, or the frequency information of the monthly service cell.
  • the CoMP measurement is a measurement performed by the UE for the purpose of CoMP operation, and is performed on one or more CoMP cooperative network elements or network elements that may become CoMP cooperative network elements, including but not limited to CSI measurement, RRM measurement. , SINR measurement, etc., may be based on CRS or CSI-RS.
  • the network can also measure based on uplink signals, such as based on SRS, DMRS, and so on.
  • the base station configures a CoMP measurement set for the serving cell (SCell or PCell) aggregated by the UE, where the CoMP measurement set includes information of the serving cell (SCell or PCell) and its CoMP cooperative network element.
  • the base station may notify the UE by using control signaling, so that the UE may stop performing CSI measurement on the CoMP cooperative network element of the SCell according to the CoMP measurement set; or when the PCell is required due to a large load or the like Stop CoMP
  • the base station may notify the UE by using control signaling, so that the UE may perform measurement according to the CoMP.
  • the CoMP cooperative network element does not continue the CSI measurement according to the RRC configuration, which reduces invalid measurement and reporting, thereby reducing the consumption of the UE power and the waste of the uplink signaling.
  • the embodiment directly uses the control signaling to directly notify the UE to stop performing CSI measurement on the CoMP cooperative network element of the serving cell, and avoids the operation of reconfiguring by using RRC signaling each time the SCell is deactivated (or the PCell needs to stop CoMP communication). , reducing the overhead of RRC signaling; correspondingly, for each activation of SCell
  • the present embodiment directly uses the control signaling to notify the UE to start CSI measurement of the CoMP cooperative network element of the serving cell, thereby avoiding the activation of the SCell each time.
  • the base station can also configure the CoMP measurement set for the SCell and the PCell.
  • the CoMP measurement set for the SCell and the PCell.
  • one of the configurations is used as an example.
  • a CoMP measurement set is configured for each SCell or PCell, and for each SCell.
  • the processing of PCell is the same as the above embodiment.
  • the serving cell of the above embodiment is a PCell
  • the serving cell of the above embodiment is a SCell
  • the SCell needs to be deactivated or activated
  • the UE needs to stop or start CSI measurement on the SCell itself in addition to stopping or starting CSI measurement on the SCell's cooperative network element.
  • the control signaling is further used to instruct the UE to stop or start performing CSI measurement on the SCell.
  • control signaling may be deactivation signaling or activation signaling of the SCell, for deactivating or activating the SCelL, for example, for deactivating or activating the media access control layer control cell of the SCell (Medium Access The control layer control element, MAC CE ); and in the prior art, the UE only deactivates or activates the SCell according to the signaling, and stops or starts CSI measurement on the SCell, and if the SCMP CoMP cooperative network element To stop or start its CSI measurement, it needs to be configured through RRC signaling, and the overhead of RRC signaling is large. And if RRC signaling is not used, This will result in invalid measurement and reporting, resulting in the consumption of UE power and the waste of uplink signaling.
  • the UE deactivates or activates the SCell according to the deactivation signaling or the activation signaling, and stops or starts the CoMP cooperative network element of the SCell according to the deactivation signaling or the activation signaling.
  • the CSI measurement avoids the occurrence of the above two situations, reduces the overhead of RRC signaling, and reduces the power consumption of the UE and the waste of uplink signaling.
  • the embodiment of the present invention does not impose any limitation.
  • the control signaling may also be added control signaling, or other existing signaling, as long as it can be used to instruct the UE to stop or start the CoMP cooperative network element for the serving cell.
  • the CSI measurement can be.
  • deactivation signaling or activation signaling may refer to the same signaling, and different values are used to deactivate or activate the SCell respectively; or two signalings may be used for deactivation or activation respectively. SCell.
  • the embodiment of the invention does not impose any limitation.
  • the information of the serving cell and the information of the CoMP cooperative network element of the serving cell in the foregoing embodiments may be a cell index, a frequency information, or a combination of the two.
  • the UE may stop or start CSI measurement of the CoMP cooperating network element of the serving cell in the predetermined subframe.
  • the predetermined subframe may be an nth subframe (n is a positive integer) after the base station sends control signaling (or deactivates SCell) to the UE.
  • n1 nl is an integer greater than or equal to 0
  • control signaling can be MAC CE for both PCell and SCell.
  • the header information of the MAC CE is represented by a specific value of the logical channel identifier, using a value of the 3GPP MAC protocol TS36.321 V10.5.0 downlink shared channel MAC CE reserved value range 01011-11010.
  • the MAC CE header uses the fixed-length MAC sub-header format, as shown in Figure 3 (1), where R represents the reserved field, which is l bit ), E represents the extended field, which is l bit, and the remaining 5 bits are used to represent the logical channel identifier (LCID).
  • C0 ⁇ C7 each occupy lbit, of which CO takes “0” and “1” respectively indicate “stop” and “start” CSI measurement for PCell CoMP cooperative network elements;
  • CI ⁇ C7 are SCell indexes (SCelllndex), and CI ⁇ C7 take “0” and “1” Represents "stop” and "start” respectively for CSI measurements of SCell and its CoMP cooperating network elements.
  • a serving cell configured to participate in CoMP communication there may be a case where the SCell is deactivated, or a case where the SCell is activated; and the two cases may refer to different SCells, that is, deactivated and The activated SCells are different SCells; they can also refer to the same SCell, that is, the same SCell is deactivated and activated.
  • the serving cell configured to participate in CoMP communication may also include a PCell, which needs to stop CoMP communication due to a change in load condition, and then restart CoMP communication.
  • the embodiments of the present invention can be applied to any of the above situations, and can also be applied to the combination of the foregoing, and the embodiment of the present invention does not impose any limitation.
  • FIG. 4 is a schematic flowchart of a CoMP measurement method according to an embodiment of the present invention. As shown, the method includes the following steps:
  • the base station configures a CoMP measurement set for the serving cell (PCell or SCell) by using an RRC connection reconfiguration message. That is, the base station sends an RRC connection reconfiguration message to the UE, where the message carries a CoMP measurement set, where the CoMP measurement set is configured to participate in CoMP.
  • the PCell or SCell of the communication to implement the configuration of CoMP measurements for the serving cell.
  • RRC connection reconfiguration complete The UE sends a radio resource connection reconfiguration complete (RRC connection reconfiguration complete) message to the base station.
  • the UE measures and reports the CSI of the serving cell and its CoMP cooperative network element (ie, the CoMP measurement set SCell and each CoMP cooperative network element) according to the configuration of the CoMP measurement set.
  • the measurement and reporting are performed on a Physical Uplink Control Channel (PUCCH) or PUSCH.
  • PUCCH Physical Uplink Control Channel
  • the base station sends a MAC CE to the UE, where the MAC CE is used to indicate that the UE stops the CSI measurement of the serving cell (excluding the PCell) and its CoMP cooperative network element.
  • S450 After receiving the MAC CE indicating that the UE stops the serving cell (excluding the PCell) and the CSI measurement of the CoMP cooperative network element, the UE stops the CSI measurement of the serving cell (excluding the PCell) and its CoMP cooperative network element, correspondingly, The 4 warnings of CSI measurement were also stopped.
  • S460 The base station sends a MAC CE to the UE, where the MAC CE is used to instruct the UE to start CSI measurement of the serving cell (excluding the PCell) and its CoMP cooperative network element.
  • step S470 in the step of starting the CSI measurement of the serving cell (excluding the PCell) and its CoMP cooperative network element, excluding the PCell means not restarting the CSI measurement of the PCell by using the MAC CE indication. This is because the CSI measurement for the PCell has never stopped, so no MAC CE is required to indicate that the UE restarts the CSI measurement for the PCell.
  • the SCell For the newly configured SCell, it is deactivated by default; after the UE switches to the target base station, the SCell also defaults to the deactivated state, and the UE stops the CSI measurement of the SCell and its CoMP cooperative network element. Then, after the UE switches to the target base station, the CSI measurement of the SCell and its CoMP cooperative network element is not started immediately; instead, the UE is instructed by the control signal to perform CSI measurement in the predetermined subframe by using the method described in the above embodiment.
  • the method of CoMP measurement in the case where the UE switches from the source base station to the target base station will be described in detail below with reference to FIG.
  • FIG. 5 is a schematic flowchart of a CoMP measurement method according to an embodiment of the present invention. As shown in the figure, the following steps are included:
  • S510 The UE sends a measurement report to the source base station.
  • step S520 The source base station performs a handover decision according to the measurement report, that is, determines whether the UE needs to switch. When it is necessary to perform the handover, step S530 is performed.
  • the source base station sends a handover request to the target base station.
  • the target base station returns a handover response to the source base station, where the handover response carries CoMP measurement
  • the source base station sends an RRC connection reconfiguration message to the UE, where the RRC connection reconfiguration message includes a handover command, such as RRC Connection Reconfiguration with Mobility Control INfo.
  • the RRC connection reconfiguration message carries a configuration configured by the target base station The CoMP measurement set.
  • S560 The UE acquires synchronization with the target cell (for example, through a random access procedure), and sends an RRC connection reconfiguration complete message to the target base station.
  • the default state of the SCell corresponding to the CoMP measurement set is deactivated, and the CSI measurement of the SCell and its CoMP cooperative network element is not immediately started.
  • S570 The base station sends, to the UE, control signaling for activating the SCell, where the control signaling is used to indicate
  • the UE starts the CSI measurement of the SCell and its CoMP cooperative network element.
  • S580 The UE starts CSI measurement of the SCell and its CoMP cooperative network element.
  • the UE starts CSI measurement of the SCell and its CoMP cooperative network element in a predetermined subframe.
  • the base station sends control signaling for activating the SCell to the UE, and the UE starts CSI measurement of the SCell and its CoMP cooperative network element in the subframe nl+n.
  • the following takes the SCell as an example to describe the CoMP measurement method provided by the above embodiments in combination with the four commonly used CoMP scenarios.
  • the four CoMP scenarios include: scenario 1, homogeneous network intra-site CoMP; scenario 2, a homogeneous network with a high-power remote radio head (RRH); scenario 3 A heterogeneous network with a low-power RRH, where each RRH is located within the coverage of a macro cell, and different transmit/receive points generated by each RRH have different cell IDs (cell IDs).
  • Scenario 4 is a heterogeneous network with a low-power RRH, where each RRH is located within the coverage of the macro cell, and different transmit/receive points generated by each RRH have the same cell ID (cell ID) as the macro cell.
  • Cell ID cell ID
  • the embodiments of the present invention are not limited thereto.
  • the foregoing method can also be applied to inter-base station (Inter-eNB) CoMP.
  • Inter-eNB inter-base station
  • CoMP is also used for a backhaul chain with limited capacity and a certain delay. The base station of the road.
  • the cooperative network elements of the first three scenarios have different cell IDs, and the CSI measurement may be based on a cell specific reference signal (CRS).
  • the cooperative network elements of the fourth scenario have the same cell ID, and the CSI measurement may be based on a channel state information reference signal (CSI-RS).
  • CSI-RS channel state information reference signal
  • the base station configures a CoMP measurement set for the SCell by using an RRC connection reconfiguration message.
  • the base station sends an RRC connection reconfiguration message to the UE, where the message carries a CoMP measurement set corresponding to the SCell configured to participate in the CoMP communication. Configuration of CoMP measurements for this SCell.
  • the CoMP measurement set includes information of the SCell and information of the CoMP cooperative network element of the SCell.
  • the CoMP measurement set includes one of the following or any combination thereof: carrier frequency information of the SCell corresponding to the CoMP measurement set (eg, absolute radio frequency channel number, ARFCN), corresponding to the CoMP measurement set Cell index of SCell (ServCelllndex), physical cell identity of SCell (phySCellId).
  • the CoMP measurement set further includes one or any combination of the following: at least one CoMP Cooperative Cell Index (CoMPCelllndex), CoMP Cooperative Cell Physical Cell Identity (phySCellld).
  • the CSI measurement is based on the SCell and the CSI-RS of each CoMP cooperating network element, and thus the configuration content of the CoMP measurement set is different from the CoMP measurement set in CoMP scenarios 1, 2, and 3.
  • the CoMP measurement set includes one of the following or any combination thereof: carrier frequency information (eg, ARFCN) of the SCell corresponding to the CoMP measurement set, cell index (ServCellIndex) of the SCell corresponding to the CoMP measurement set, and physicality of the SCell Cell ID ( phySCellld ).
  • the CoMP measurement set further includes one or any combination of the following: a CSI-RS configuration identifier (CSI-RS-Configld) or an index of the at least one CoMP cooperative network element and its corresponding CSI-RS configuration.
  • the CSI-RS configuration includes one of the following information or any combination thereof: an antenna port configuration (antennaPortsCount), a resource, a resource configuration, a sub-module, a subframe configuration, and the like.
  • the CoMP measurement set may further include a CoMP measurement set identifier (compMeasSetld), used to identify the CoMP measurement set, and used in combination with the information of the above SCell to establish an association relationship between the CoMP measurement set and the SCell.
  • the CoMP measurement set may further include a CQI report configuration, and each of the CoMP cooperation network elements of the serving cell and the serving cell respectively correspond to a CQI report configuration, where the CQI configuration includes one of the following contents: Or any combination thereof: channel quality indicator (CQI), precoding matrix indication (PMI), precoding type indication (PTI), rank indication (RI). These parameters are used in combination with the information of the above SCell CoMP cooperative network element for configuration.
  • the CoMP measurement concentrates the CSI measurement and report information of each CoMP cooperative network element; in combination with the information of the SCell, it is used to configure the CSI measurement and the information of the SCell.
  • the base station transmits a CoMP measurement set to the UE through dedicated signaling.
  • the dedicated signaling is RRC signaling, for example, a RRC connection reconfiguration message.
  • the dedicated signaling may also be a MAC CE.
  • the present embodiment is not limited thereto, and the combination of RRC signaling and MAC CE may be used to separately transmit content in the CoMP measurement set, for example, configuring CSI measurement and report information by using RRC signaling, and specifying CoMP cooperation by using MAC CE.
  • the cell index indicates which CCMP cooperative NEs need to measure and report CSI.
  • S620 The UE sends an RRC connection reconfiguration complete message to the base station.
  • the UE measures and reports the CSI of the SCell and its CoMP cooperative network element (ie, the CoMP measurement set SCell and each CoMP cooperative network element) according to the configuration of the CoMP measurement set. Wherein the measurement and reporting are performed on a Physical Uplink Control Channel (PUCCH) or PUSCH.
  • PUCCH Physical Uplink Control Channel
  • the CSI measurement includes one or any combination of the following: CQL PMI, PTL, and RI.
  • the base station sends control signaling to the UE, to instruct the UE to stop performing CSI measurement on the SCell and the CoMP cooperative network element of the SCell according to the CoMP measurement set.
  • the SCell is deactivated and can be triggered by the base station. It can also be triggered by the SCell. For example, the SCell deactivation timer running on the SCell times out.
  • the embodiment of the present invention does not impose any limitation.
  • control signaling may be, for example, a MAC CE.
  • control signaling may also be a newly configured cell, and its structure is not limited as long as it can instruct the UE to start or stop the CSI measurement (or notify the UE that the SCell is activated or deactivated).
  • the embodiment of the invention does not impose any limitation.
  • the UE stops CSI measurement on the SCell and its CoMP cooperative network element (that is, all CoMP cooperative network elements in the CoMP measurement set corresponding to the SCell).
  • the predetermined subframe may be an nth subframe (n is a positive integer) after the base station sends control signaling (or deactivates the SCell) to the UE.
  • n2 is an integer greater than or equal to 0
  • the base station when the SCell needs to be deactivated, can notify the UE by using a control signal, so that the UE can stop performing CSI measurement on the Coell and SCell CoMP cooperative network elements according to the CoMP measurement set.
  • SCell's CoMP cooperative network element does not continue to perform CSI measurement according to the RRC configuration, which reduces invalid measurement and 4 reports, thereby reducing UE power consumption and waste of uplink signaling; in addition, by configuring the CoMP measurement set and The UE directly informs the UE to stop the CSI measurement of the CoMP cooperative network element of the SCell by using the control signaling, and avoids the operation of reconfiguring by using the RRC signaling each time the SCell is deactivated, thereby reducing the overhead of the RRC signaling.
  • FIG. 7 is a schematic flowchart of a CoMP measurement method according to an embodiment of the present invention.
  • the difference from the embodiment shown in FIG. 6 is that the process of activating and deactivating the SCell is combined, as shown in the figure, including the following steps:
  • the base station configures a CoMP measurement set for the SCell by using an RRC connection reconfiguration message; that is, The base station sends an RRC connection reconfiguration message to the UE, where the message carries a CoMP measurement set corresponding to the SCell configured to participate in the CoMP communication to implement configuration of the CoMP measurement of the SCell.
  • the CoMP measurement set in this embodiment is the same as the CoMP measurement set described in the scenes 1, 2, and 3, and will not be described herein.
  • S720 The UE sends an RRC connection reconfiguration complete message to the base station.
  • S730 The UE measures and reports the CSI of the SCell and its CoMP cooperative network element (ie, the CoMP measurement set SCell and each CoMP cooperative network element) according to the CoMP measurement set.
  • CoMP cooperative network element ie, the CoMP measurement set SCell and each CoMP cooperative network element
  • the base station sends a control signaling for deactivating the SCell to the UE, and is used to instruct the UE to stop performing CSI on the CoMP cooperative network element of the SCell and the SCell according to the CoMP measurement set. measuring.
  • S750 The CSI measurement of the SCell and its CoMP cooperative network element (that is, all CoMP cooperative network elements in the CoMP measurement set corresponding to the SCell) is stopped in the subframe n3+n UE. Of course, the corresponding CSI measurement has also stopped.
  • n4 is an integer greater than or equal to 0
  • the SCell corresponding to the CoMP measurement set needs to be activated, and the base station sends control signaling for activating the SCell to the UE, and is used to instruct the UE to start to the SCell according to the CoMP measurement set.
  • the CSI measurement is performed by the CoMP cooperative network element of SCell.
  • S770 Start CSI measurement on the SCell and its CoMP cooperative network element (that is, all CoMP cooperative network elements in the CoMP measurement set corresponding to the SCell) in the subframe n4+n UE.
  • CoMP cooperative network element that is, all CoMP cooperative network elements in the CoMP measurement set corresponding to the SCell
  • the deactivation is the same as the activated SCell. If the deactivation is different from the activated SCell, the principle is the same as the above method. Because the base station is configured for different service cells Setting a different CoMP measurement set is different from the CoMP measurement set on which the CSI measurement is stopped and started.
  • the configuration of the CoMP measurement set can be configured according to the UE's RRM measurement report. That is, the base station configures the RRM measurement set for the UE, and configures the CoMP measurement set for the serving cell according to the RRM measurement report reported by the UE.
  • a configuration method of the CoMP measurement set is described in detail below with reference to FIG. 8. As shown in FIG. 8, the method includes the following steps:
  • the base station configures an RRM measurement set for the UE by using an RRC connection reconfiguration message.
  • the RRM measurement set includes one of the following or any combination thereof: a measurement identifier (measld), a measurement object identifier (measObjectld) and its corresponding measurement object configuration, a measurement configuration identifier (reportConfigld), and its corresponding measurement. Report configuration. among them:
  • the measurement object configuration includes one of the following or any combination thereof: carrier frequency information (for example, ARFCN), physical cell identifier (phySCellId), and cell index (celllndex) corresponding to PCell and SCell, respectively.
  • carrier frequency information for example, ARFCN
  • phySCellId physical cell identifier
  • cell index celllndex
  • the measurement report configuration includes one of the following or any combination thereof: a periodic measurement report period, an event trigger type, and a corresponding threshold value, and the like.
  • S820 The UE sends an RRC connection reconfiguration complete message to the base station.
  • the UE measures one of the following or any combination thereof according to the configuration of the RRM measurement set and based on the CRS: reference signal received power (RSRP) of the PCell, reference signal received quality (RSRQ) of the PCell, RSRP of the SCell, and RSRQ of the SCell RSRP of the same-frequency neighboring area of PCell, RSRQ of the same-frequency neighboring area of PCell, RSRP of the same-frequency neighboring area of SCell, and RSRQ of the same-frequency neighboring area of SCell.
  • the RRM measurement report is sent to the base station after the measurement report trigger condition (period or event) is satisfied.
  • the RRM measurement report includes one or any combination of the following: a measurement identifier (measld), a physical cell identifier of one or more co-frequency neighbors of the PCell (phySCellld), one or more co-frequency neighbors of the PCell.
  • a measurement identifier measld
  • phySCellld physical cell identifier of one or more co-frequency neighbors of the PCell
  • PCell PCell
  • co-frequency neighbors of the PCell includes one or any combination of the following: a measurement identifier (measld), a physical cell identifier of one or more co-frequency neighbors of the PCell (phySCellld), one or more co-frequency neighbors of the PCell.
  • cellGlobalId cell of SCell Index
  • phySCellId physical cell identifier of one or more co-frequency neighbors of the SCell.
  • the base station configures a CoMP measurement set for the SCell by using an RRC connection reconfiguration message according to the RRM measurement report reported by the UE. For example, the base station selects one or more network elements of the SCell co-frequency neighboring area RSRP or RSRQ whose measurement result is greater than the preset threshold as the CoMP cooperative network element of the SCell, and configures the CoMP measurement set for the SCell according to the selected cooperative network element, and configures the CoMP.
  • the contents of the measurement set are described in (1).
  • the CoMP cooperating network elements have the same cell ID.
  • the base station may configure a CoMP resource management set for the UE, the UE performs measurement according to the CoMP resource management set, and sends a measurement report, and the base station configures the CoMP measurement set for the SCell according to the measurement report.
  • a configuration method of the CoMP measurement set is described in detail below with reference to FIG. 9. As shown in FIG. 9, the method includes the following steps:
  • the base station configures, by the RRC connection reconfiguration message, a CoMP resource management set corresponding to the SCell by the UE.
  • the CoMP resource management set includes one or any combination of the following: a measurement identifier (measld), a measurement object identifier (measObjectld) and its corresponding measurement object configuration, a measurement report configuration identifier (reactionConfigld), and its corresponding measurement report configuration. among them:
  • the measurement object configuration includes one or any combination of the following: carrier frequency information corresponding to the SCell (eg, ARFCN), CSI-RS configuration identifier (CSI-RS-Confi g Id ), one or more CSI-RSs Configure the index, one or more CSI-RS configuration information.
  • the CSI-RS configuration information includes one or any combination of the following: antenna port configuration (antennaPortsCount), resource configuration (resourceConfig), subframe configuration (frameConfig), and the like.
  • the measurement report configuration includes one or more of the following contents: a periodic measurement report period, an event trigger type, and a corresponding threshold value.
  • S920 The UE sends an RRC connection reconfiguration complete message to the base station.
  • the UE is configured according to a CoMP resource management set corresponding to the SCell, and is based on the CSI-RS.
  • the RSRP and/or RSRQ corresponding to each CSI-RS configuration in the CoMP resource management set is measured.
  • the measurement report is sent to the base station, and the measurement report includes one of the following or any combination thereof: the measurement identifier (measld), the cell index of the SCell (ServCelllndex), one or more of the SCell.
  • the CSI-RS configuration identifier (CSI-RS-Configld), the RSRP corresponding to one or more CSI-RS configuration identifiers of the SCell, and the RSRQ corresponding to one or more CSI-RS configuration identifiers of the SCell.
  • the UE After deactivating the SCell, the UE uses a longer measurement period for the RSRP and/or RSRQ measurement of the CSI-RS in the CoMP resource management set associated with the SCell, for example, 5 times the measurement period when the SCell is in an active state; or stops CSI-RS based RSRP and / or RSRQ measurements.
  • the UE After the SCell is activated, the UE measures the RSRP and/or RSRQ measurement of the CSI-RS in the CoMP resource management set associated with the SCell to use the measurement period of the active state SCell; or starts the CRP-RS based RSRP and/or RSRQ measurement.
  • the base station configures a CoMP measurement set for the SCell by using an RRC connection reconfiguration message according to the measurement report reported by the UE. For example, the base station selects one or more network elements whose RSRP and/or RSRQ measurement results corresponding to the CSI-RS configuration identifier (CSI-RS-Configld) of the SCell in the CoMP resource management set of the SCell is greater than the preset threshold, and serves as the CoMP collaboration network of the SCell. Element, the CoMP measurement set is configured for the SCell according to the selected cooperative network element. See the description in (2) for the configuration of the CoMP measurement set. Example.
  • the embodiments of the present invention are applicable to base stations or UEs in various communication systems.
  • FIG. 10 is a functional block diagram of a base station according to an embodiment of the present invention.
  • the base station includes a transmitting unit 101 and a control unit 102.
  • the sending unit 101 is configured to send a CoMP measurement set to the UE, where the CoMP measurement set corresponds to a serving cell, and the CoMP measurement set includes information about the serving cell and information of a CoMP cooperative network element of the serving cell;
  • the control signaling is sent by the sending unit 101, where the control signaling is used to indicate that the UE stops according to the CoMP measurement set. Or start performing CSI measurement on the CoMP cooperative network element of the serving cell.
  • the serving cell of the above embodiment is a PCell
  • the serving cell of the above embodiment is a SCell
  • the SCell needs to be deactivated or activated
  • the UE needs to stop or start CSI measurement on the SCell itself, in addition to stopping CSI measurement on the SCell cooperative network element.
  • the control signaling is further used to instruct the UE to stop or start performing CSI measurement on the SCell.
  • control unit 102 when the monthly service cell is an SCell and needs to be deactivated or activated, the control unit 102 is configured to generate a CoMP collaboration network that instructs the UE to stop or start the SCell and the SCell according to the CoMP measurement set. Control signaling for performing CSI measurement; or when the serving cell is a PCell and needs to stop or start CoMP communication, the control unit is configured to generate the indication
  • the above sending unit 101 may be a transmitter or a transceiver, and the above control unit 102 may be embedded in the processor of the base station in hardware or software.
  • the processor can be a central processing unit (CPU) or a microcontroller.
  • FIG. 11 is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • the base station includes a transmitter 111, a memory 112, and a processor 113 coupled to the transmitter 111 and the memory 112, respectively.
  • the base station may also include a general component such as a receiver, an antenna, a baseband processing component, a medium-frequency processing component, an input/output device, and the like, and the embodiment of the present invention is not limited thereto.
  • the memory 112 stores a CoMP measurement set and a set of program codes, where the CoMP measurement set corresponds to a serving cell, and the CoMP measurement set includes information of the serving cell and information of a CoMP cooperative network element of the serving cell.
  • the processor 113 is configured to call the program code stored in the memory 112, and is configured to perform the following operations:
  • control signaling being used to indicate that the UE is measured according to the CoMP
  • the set stops or starts to perform CSI measurement on the CoMP cooperative network element of the serving cell; and sends the control signaling to the UE by using the transmitter 111.
  • the processor executes the program code generation control signaling when: the serving unit is an SCell and needs to be deactivated or activated, the control unit 102 is configured to generate the indication that the UE stops or starts according to the CoMP measurement set.
  • the SCell and the CoMP cooperative network element of the SCell perform control signaling for CSI measurement; or when the serving cell is a PCell and needs to stop or start CoMP communication, the control unit is configured to generate, according to the The CoMP measurement set needs to be described.
  • the base station shown in FIG. 10 and FIG. 11 may be used to implement any of the methods provided by the foregoing method embodiments, and information about the serving cell and the serving cell
  • the UE includes a receiving unit 121, a measuring unit 122, and a control unit 123.
  • the receiving unit 121 is configured to receive a CoMP measurement set sent by the base station, where the CoMP measurement set corresponds to a serving cell, and the CoMP measurement set includes information about the serving cell and a CoMP cooperative network element of the serving cell.
  • the receiving unit 121 is further configured to receive the control signaling sent by the base station, and the measuring unit 122 is configured to perform CSI measurement on the serving cell and the CoMP cooperative network element of the serving cell according to the CoMP measurement set.
  • the control unit 123 is configured to control, according to the control signaling and the CoMP measurement set, the measurement unit 122 to stop or start performing CSI measurement on the CoMP cooperative network element of the serving cell.
  • the control unit 123 is configured to control the measurement unit 122 to stop the CoMP cooperative network element of the serving cell. Perform CSI measurements.
  • the control unit 123 is configured to control the measurement unit 122 to start a CoMP collaboration network for the serving cell. The element performs CSI measurement.
  • the above receiving unit 121 may be a receiver or a transceiver, and the above measuring unit 122 and the control unit 123 may be embedded in the processor of the base station in hardware or software.
  • the processor can be either a CPU or a microcontroller.
  • FIG. 13 is a schematic structural diagram of a UE according to an embodiment of the present invention.
  • the UE includes a receiver 131, a memory 132, and a processor 133 coupled to the receiver 131 and the memory 132, respectively.
  • the UE may further include a common component such as a receiver, an antenna, a baseband processing component, a medium-frequency processing component, an input/output device, and the like, and the embodiment of the present invention is not limited thereto.
  • the memory 132 stores a set of program codes, and the processor 133 calls the program code stored in the memory to perform the following operations:
  • a CoMP measurement set sent by the base station where the CoMP measurement set corresponds to a serving cell, and the CoMP measurement set includes information of the serving cell and information of a CoMP cooperative network element of the serving cell;
  • the UE shown in FIG. 12 and FIG. 13 may be used to implement any of the methods provided by the foregoing method embodiments, and information about the serving cell and information of a CoMP cooperative network element of the serving cell.
  • the description of the CSI measurement, the CoMP measurement set, the control signaling, and the like are the same as the foregoing method embodiments, and details are not described herein again.
  • the present invention can be implemented in hardware, firmware implementation, or a combination thereof.
  • the functions described above may be stored in or transmitted as one or more instructions or code on a computer readable medium.
  • the computer readable medium includes a computer storage medium and a communication medium, wherein the communication medium includes a convenient transfer from one place to another Any medium of a computer program.
  • a storage medium may be any available media that can be accessed by a computer.
  • computer readable media may comprise RAM, ROM, EEPROM, CD-ROM or other optical disk storage, disk storage media or other magnetic storage device, or can be used for carrying or storing in the form of an instruction or data structure.
  • the desired program code and any other medium that can be accessed by the computer may suitably be a computer readable medium.
  • the software is transmitted from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave, then the coaxial cable , fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, wireless, and microwaves are included in the fixing of the associated media.
  • coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, wireless, and microwaves are included in the fixing of the associated media.
  • a disk and a disc include a compact disc (CD), a laser disc, a disc, a digital versatile disc (DVD), a floppy disk, and a Blu-ray disc, wherein the disc is usually magnetically copied, and the disc is The laser is used to optically replicate the data. Combinations of the above should also be included within the scope of the computer readable media.

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Abstract

L'invention concerne un procédé de mesure coordonné multipoint (CoMP), une station base et un équipement utilisateur (UE). La station de base configure un ensemble de mesures CoMP pour une cellule de desserte (SCell ou PCell) sélectionnée par l'UE, l'ensemble de mesures CoMP comprenant des informations de la cellule de desserte (SCell ou PCell) et un élément de réseau coordonné CoMP de la cellule de desserte ; et lorsque la SCell doit être activée ou désactivée ou lorsque la PCell doit établir ou arrêter une communication CoMP, la station de base peut le notifier à l'UE par signalisation de contrôle, de telle sorte que l'UE peut lancer ou arrêter l'exécution d'une mesure CSI sur l'élément de réseau coordonné CoMP de la cellule de desserte en fonction de l'ensemble de mesures CoMP, ce qui permet d'éviter une opération de reconfiguration par utilisation d'une signalisation RRC chaque fois que la SCell est activée ou désactivée (ou que la PCell doit établir ou arrêter une communication CoMP), et de réduire le surdébit de signalisation RRC.
PCT/CN2012/079505 2012-08-01 2012-08-01 Procédé de mesure coordonné multipoint, station de base et équipement utilisateur WO2014019168A1 (fr)

Priority Applications (2)

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