WO2011038695A1 - 对小区进行信道测量的方法和装置 - Google Patents

对小区进行信道测量的方法和装置 Download PDF

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Publication number
WO2011038695A1
WO2011038695A1 PCT/CN2010/077529 CN2010077529W WO2011038695A1 WO 2011038695 A1 WO2011038695 A1 WO 2011038695A1 CN 2010077529 W CN2010077529 W CN 2010077529W WO 2011038695 A1 WO2011038695 A1 WO 2011038695A1
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Prior art keywords
reference signal
measurement
period
cell
user equipment
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PCT/CN2010/077529
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English (en)
French (fr)
Inventor
赵亚军
李强
范霄安
万蕾
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华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP10819924.1A priority Critical patent/EP2472940B1/en
Publication of WO2011038695A1 publication Critical patent/WO2011038695A1/zh
Priority to US13/434,561 priority patent/US8588762B2/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W24/00Supervisory, monitoring or testing arrangements
    • H04W24/10Scheduling measurement reports ; Arrangements for measurement reports
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00Baseband systems
    • H04L25/02Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202Channel estimation
    • H04L25/0204Channel estimation of multiple channels
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00Baseband systems
    • H04L25/02Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202Channel estimation
    • H04L25/0224Channel estimation using sounding signals
    • H04L25/0226Channel estimation using sounding signals sounding signals per se
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0032Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
    • H04L5/0035Resource allocation in a cooperative multipoint environment
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048Allocation of pilot signals, i.e. of signals known to the receiver
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0057Physical resource allocation for CQI
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0091Signaling for the administration of the divided path
    • H04L5/0094Indication of how sub-channels of the path are allocated
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0001Arrangements for dividing the transmission path
    • H04L5/0003Two-dimensional division
    • H04L5/0005Time-frequency
    • H04L5/0007Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method and apparatus for performing channel measurement on a zone.
  • Background Art In a wireless communication system, in order to perform efficient and efficient radio resource scheduling, a network device must acquire sufficient downlink channel state information with certain accuracy. In order for the network device to obtain the downlink channel state information, it is necessary to rely on the measurement reporting of the mobile station.
  • the method for measuring the reporting by the mobile station mainly includes: the network device sends a certain reference signal to the mobile station in the coverage area for the measurement of the downlink channel; after receiving the reference signal, the mobile station obtains the downlink channel response according to the measurement, according to the downlink channel. The response is obtained from channel state information. Then, the mobile station appropriately quantizes the downlink channel state information according to a certain rule, and then feeds back to the corresponding network device.
  • CoMP Coordinated multipoint processing
  • Multi-cell downlink channel estimation techniques are introduced to achieve higher user throughput.
  • multiple cells simultaneously provide data transmission services for one UE (User Equipment).
  • the UE needs to simultaneously measure the reference signals sent by multiple serving base stations, and estimate the downlink channel information from multiple base stations and feed back them.
  • a method for measuring channel state information in the prior art is: the network device sends a CRS (common reference signal) to the UE, and the UE performs downlink channel estimation according to the CRS.
  • the above CRS can be used for both data coherent demodulation and channel measurement.
  • FIG 1 A line transmission system is taken as an example, in which a cell (cell) 1, 2, 3, and a user equipment UE1 are included.
  • the cell 1 is a serving cell of the UE, and the cells 1, 2, and 3 jointly form a CoMP measurement set of the UE1.
  • the UE1 obtains downlink channel state information of each cell by detecting all downlink CRSs from the respective cells.
  • the UE1 measures the RE (Resource Element) occupied by all CRSs in each subframe, thereby obtaining downlink channel state information of each cell. Then, UE1 feeds back the obtained downlink channel information of each cell to each cell.
  • RE Resource Element
  • the CRS may be replaced by a CSI-RS (CSI-RS Channel State Information Reference signal).
  • the period of the CRS and the CSI-RS and the occupied RE density are different.
  • the RE density refers to a subframe in which the reference signal CRS and the CSI-RS are transmitted, and each RB (resource block, resource block) in the subframe.
  • the number of REs on the top that is, the number of REs occupied by the reference signal on each RB of the subframe.
  • Embodiments of the present invention provide a method and apparatus for performing channel measurement on a cell to reduce the workload of the UE for channel measurement.
  • a method for performing channel measurement on a cell including:
  • a method for performing channel measurement on a cell including:
  • the location information of the reference signal is a part of the location occupied by the reference signal of the cell; the channel measurement is performed on the cell according to the location information of the reference signal to be measured, and the channel measurement report is returned to the network side.
  • a device for performing channel measurement on a cell comprising:
  • An information sending module configured to send, to the user equipment, location information of the reference signal to be measured, where the location information of the reference signal to be measured is a part of a location occupied by the reference signal of the cell;
  • a channel measurement report receiving module configured to receive a channel measurement report of the cell sent by the user equipment, where the channel measurement report is that the user equipment performs channel measurement on the cell according to location information of the reference signal to be measured Obtained.
  • a device for performing channel measurement on a cell comprising:
  • An information receiving module configured to receive location information of a reference signal of a cell to be measured sent by a network, where location information of the reference signal to be measured is a part of a location occupied by a reference signal of the cell;
  • a measurement processing module configured to perform channel measurement on the small area according to location information of the reference signal to be measured, and return a channel measurement report to the network side.
  • the embodiment of the present invention sends the location information of the reference signal to be measured to the user equipment, where the location of the reference signal to be measured is occupied by the reference signal of the cell. Part of the location, so that the UE performs channel measurement based on the partial RE density occupied by the reference signal, which reduces the workload of the UE for channel measurement.
  • FIG. 1 is a schematic structural diagram of a wireless transmission system in a CoMP scenario in the prior art
  • FIG. 2 is a flowchart of a method for performing channel measurement on a cell according to Embodiment 1 of the present invention
  • FIG. 3 is a flowchart of a method for performing channel measurement on a cell according to Embodiment 2 of the present invention
  • FIG. 4 is a schematic diagram of a CRS pattern of three different cells in a CoMP set configured by an eNB according to Embodiment 2 of the present invention
  • FIG. 5 is a schematic diagram of a punching manner of three cells used for a CRS pattern of three cells shown in FIG. 3 according to Embodiment 3 of the present invention.
  • FIG. 6 is a schematic diagram of a punching manner of three cells used when two reference signals (CSI-RS and CRS) are used in each cell in a CoMP set according to Embodiment 3 of the present invention; A specific structure of an apparatus for performing channel measurement on a cell according to an embodiment of the present invention is shown in the figure;
  • FIG. 8 is a schematic structural diagram of another apparatus for performing channel measurement on a cell according to an embodiment of the present invention.
  • the network side sends the location information of the reference signal to be measured to the user equipment, where the location of the reference signal to be measured is a part of the location occupied by the reference signal of the cell.
  • the network side receives the channel measurement report of the cell sent by the user equipment, where the channel measurement report is obtained by the user equipment performing channel measurement on the cell according to the location information of the reference signal to be measured. .
  • the location information of the reference signal to be measured includes: a measurement period in which the user equipment performs channel measurement, and a location of a resource unit RE occupied by a reference signal in the measurement period, where the measurement period is greater than The transmission period of the reference signal; or; the user a measurement period in which the device performs channel measurement and a partial RE position occupied by the reference signal in the measurement period; or; a measurement period in which the user equipment performs channel measurement and a portion occupied by a reference signal in the measurement period RE position, the measurement period is greater than a transmission period of the reference signal.
  • the measurement period is an integer multiple of a transmission period of the reference signal.
  • a unified measurement period of the multiple cells is an integer multiple of a transmission period of the one reference signal; and/or, where the multiple cells are located
  • the RE density occupied by the reference signal to be measured in the unified measurement period is less than or equal to the RE density occupied by the one reference signal;
  • the unified measurement period of the multiple cells is an integer multiple of a transmission period of a specified one of the plurality of reference signals; and/or The RE density of the reference signal to be measured of the plurality of cells in the unified measurement period of the multiple cells is less than or equal to the RE density occupied by the specified one of the plurality of reference signals.
  • a puncturing period and a puncturing position for puncturing the position of the neighboring cell RE corresponding to the reference signal are configured, where the puncturing position is a neighbor corresponding to the RE position occupied by the reference signal in the puncturing period a cell RE location, the puncturing period is greater than a transmission period of the reference signal;
  • the puncturing period is greater than a transmission period of the reference signal.
  • the puncturing period of one is an integer multiple of the transmission period of the one reference signal; and/or, the uniform puncturing density of the plurality of cells is less than or equal to the RE density occupied by the one reference signal ;
  • the unified puncturing period of the plurality of cells is an integer multiple of a transmission period of a specified one of the plurality of reference signals; and/or, The uniform puncturing density of the plurality of cells is less than or equal to the RE density occupied by a specified one of the plurality of reference signals.
  • the measurement period of the channel measurement by the user equipment, the location information of the reference signal to be measured, the measurement time of the user equipment in each cell, and the measurement time of the user equipment on different antenna ports of the same cell At least one of the identifiers is identified by the identity of each cell.
  • FIG. 2 The processing flow of the method for performing channel measurement on a cell provided by this embodiment is shown in FIG. 2, and includes the following processing steps:
  • Step 21 Send location information of the reference signal to be measured to the user equipment, where the location of the reference signal to be measured is part of a location occupied by the reference signal of the cell.
  • the location information of the reference signal to be measured includes: a measurement period in which the user equipment performs channel measurement and a resource unit RE position occupied by a reference signal in the measurement period, where the measurement period is greater than the reference signal Or a measurement period of the channel measurement by the user equipment and a partial RE position occupied by the reference signal in the measurement period; or; the measurement period of the channel measurement by the user equipment and the measurement Reference within the cycle a portion of the RE position occupied by the signal, the measurement period being greater than a transmission period of the reference signal.
  • Step 22 Receive a channel measurement report of the cell sent by the user equipment, where the channel measurement report is obtained by the user equipment performing channel measurement on the cell according to the location information of the reference signal to be measured.
  • the UE may be configured to adopt a unified channel measurement mechanism in each cell.
  • FIG. 3 The processing flow of the method for performing channel measurement on a cell provided by this embodiment is shown in FIG. 3, and includes the following processing steps:
  • Step 31 The eNB (Enhanced Node B) configures location information of the reference signal to be measured, so that the UE performs channel measurement on each cell according to the location information.
  • eNB Enhanced Node B
  • the eNB configures the location information of the reference signal to be measured. Then, the location information is sent to the UE, so that the UE performs channel measurement on each cell according to the location information.
  • the foregoing eNB may be a base station that performs unified management on each cell in the CoMP scenario.
  • the location information of the reference signal to be measured includes: a measurement period in which the user equipment performs channel measurement and an RE position occupied by a reference signal in the measurement period, where the measurement period is greater than the transmission of the reference signal a measurement period of the channel measurement by the user equipment and a partial RE position occupied by the reference signal in the measurement period; or; a measurement period in which the user equipment performs channel measurement and in the measurement period The partial RE position occupied by the reference signal, the measurement period being greater than the transmission period of the reference signal.
  • the UE does not perform channel measurement for each subframe in which the reference signal is transmitted and each RE occupied by the reference signal.
  • the UE when the reference signal is CRS, the UE performs channel measurement only to detect data on part of the RE occupied by the CRS, instead of detecting data on all REs occupied by the CRS.
  • the method for the eNB to configure the UE to perform the measurement period of the channel measurement may include, but is not limited to, the following Several kinds:
  • the configuration may be configured according to a CRS or CSI-RS transmission period configured in a system, such as an LTE (Long Term Evolution)-A system, and the measurement period may be an integer multiple of a CRS or CSI-RS transmission period (such as: 1 times cycle, 2 times cycle, etc.);
  • the measurement period is set to be an integer multiple of the transmission period of the foregoing reference signal; when different cells in the CoMP set respectively use different references
  • the measurement period can be set to an integral multiple of the transmission period of the CSI-RS.
  • the configuration measurement period is the same as that of CRS or CSI-RS.
  • CRS or CSI-RS For the specific implementation of CRS or CSI-RS, see Example 2.
  • the eNB configures measurement moments of the UE in each cell, and configures measurement moments of the UE on different antenna ports of the same cell.
  • the eNB configures the UE to perform channel measurement according to a unified measurement period in each cell.
  • the subframes measured by different cells are staggered from each other, that is, not in the same subframe;
  • the subframes measured by different cells are the same, but are measured based on REs of different OFDM (Orthogonal Frequency Division Multiplexing) symbols of the same subframe;
  • the subframes measured by different cells are the same, and are measured based on the REs of the same OFDM symbol of the same subframe.
  • the sub-PBCH Primary Broadcast Channel
  • SCH Synchronize Channel
  • the method for the eNB to configure the measurement moments of the UE on different antenna ports of the same cell includes but is not limited to the following:
  • the UE is configured to measure on different antenna ports based on different subframes, that is, the subframes measured on each antenna port are different from each other.
  • the eNB configures the UE to perform channel measurement on each antenna port of each cell or each cell based on the same measured RE density.
  • the measured RE density on which the eNB configures the UE for channel measurement may be implemented as follows:
  • channel measurement is performed according to the RE density configured by the reference signal. For example, if one CRS port occupies 8 REs, then only Channel measurement is performed on 6 REs; when different reference signals (CSI-RS or CRS) are used in different cells in the CoMP set, channel measurement can be performed according to the RE density of the CSI-RS configuration; If the accuracy requirements are reduced, channel measurements can be configured with a density lower than the CSI-RS density. For example, channel measurement is performed based only on half the density of CSI-RS.
  • the measured RE density on which the UE performs channel measurement may be the same as the punching density of the reference signal of each cell.
  • the eNB may send the foregoing CoMP mode and the single small to the UE according to actual conditions.
  • the handover message between the zone modes the UE switches between the CoMP mode and the single cell mode according to the received handover message.
  • the eNB can configure the UE to use the same channel measurement mechanism regardless of whether the CoMP mode is switched to the single cell mode or the single cell mode is switched to the CoMP mode.
  • the eNB is configured to use the CoMP mode.
  • the channel measurement mechanism adopts the channel measurement mechanism in the single cell mode when switching from the CoMP mode to the single cell mode.
  • the eNB configures a punching period and a punching position for punching the position of the neighboring cell RE corresponding to the reference signal according to the puncturing mechanism of the unified reference signal.
  • the above punching mechanism may include a punching cycle and a punching position.
  • the specific configuration method of the puncturing mechanism may be: configuring a puncturing period and a puncturing position for puncturing the position of the neighboring cell RE corresponding to the reference signal, where the puncturing position is a reference signal in the puncturing period a location of the neighboring cell RE corresponding to the occupied RE location, where the puncturing period is greater than a sending period of the reference signal; or; configuring a puncturing period and a puncturing position for puncturing the neighboring cell RE position corresponding to the reference signal,
  • the puncturing position is a neighboring cell RE position corresponding to a part of the RE position occupied by the reference signal in the puncturing period;
  • the puncturing position is a neighbor corresponding to a part of the RE position occupied by the reference signal in the puncturing period
  • the cell RE location, the puncturing period is greater than a transmission period of the reference signal.
  • the reference signal can be a CSI-RS or a CRS.
  • the eNB may configure the CRS patterns of the three different cells as shown in FIG. 4, and the CRS patterns of the respective cells are respectively shifted according to the frequency domain.
  • the eNB will also configure a reference signal for channel state information measurement according to a puncturing mechanism of the unified reference signal, and the reference signal may be a CSI-RS or a CRS.
  • Step 34 The eNB sends a notification message carrying the channel measurement mode to the UE, and the UE performs channel estimation and channel measurement on each cell according to the foregoing notification message, and returns a channel of each cell to the eNB. Status measurement information.
  • the eNB sends a notification message carrying the channel measurement mode to the UE, where the channel measurement mode includes: the location information of the reference signal to be measured, and optionally: the reference signal used by each cell for channel measurement (CSI-RS) Or CRS), measurement period, RE density based on channel measurement, measurement time of UE in each cell, measurement time of UE on different antenna ports of the same cell.
  • the channel measurement mode includes: the location information of the reference signal to be measured, and optionally: the reference signal used by each cell for channel measurement (CSI-RS) Or CRS), measurement period, RE density based on channel measurement, measurement time of UE in each cell, measurement time of UE on different antenna ports of the same cell.
  • CSI-RS channel measurement
  • CRS channel measurement
  • the UE performs channel estimation and channel measurement on each cell according to the foregoing notification message, and returns channel state measurement information of each cell to the eNB.
  • the Cell-ID of each cell may be used to identify the measurement period of the channel measurement by the user equipment, the location information of the reference signal to be measured, the measurement time of the user equipment in each cell, and the user equipment. At least one of a measurement moment on a different antenna port of the same cell and a puncturing manner of each cell.
  • the following is an example of the implicit notification of the puncturing method (the method of implicit notification of the above other information is similar), because the positions of the CRS puncturing of different cells are different.
  • the UE needs to measure the downlink channel of each cell in the CoMP measurement set, and therefore needs to notify the UE to measure the puncturing manner of all cells in the set.
  • the UE may be notified by using an implicit mapping bound to celljd. That is, the CRS puncturing mode (including the period and the pattern) of each cell is directly related to the celljd of the cell, and the eNB notifies the UE1 to measure the cell_id of all cells in the set, and the UE maps different reference signal positions according to different celljd.
  • the downlink channel of the cell is estimated at the corresponding location. Specifically, still referring to FIG.
  • the CRS puncturing period is 5 ms, there are 5 possible puncturing methods for CRS, and the cell_id_2 of the network allocation cell 2 is 3.
  • UE1 After receiving the cell_id_2, UE1 can obtain the location of the subframe where the CRS punching of the cell 2 is located by the following simple modulo operation:
  • this notification mode requires the eNB to allocate celljd to consider that all cell CRSs in the same CoMP measurement set are respectively shifted according to the frequency domain.
  • two modes may be defined: a mechanism enable mode and a mechanism disable mode, where the mechanism enable mode refers to performing channel measurement by using the solution described in the embodiment of the present invention, and the mechanism prohibition mode refers to not adopting the embodiment of the present invention.
  • the described scheme performs channel measurements to keep the existing channel measurement scheme unchanged.
  • the eNB sends the handover message of the above two modes to the UE according to the actual situation, and the UE switches between the two modes according to the received handover message.
  • the period of multiple reference signals used by multiple cells and the occupied RE density may be different, and the UE needs to be different for different
  • the reference signal is used in each cell to perform channel measurement in different processing manners, so that the complexity of channel measurement by the UE for each cell is greatly improved, and the accuracy of channel measurement is greatly reduced. It is also inconvenient to use a unified mechanism to allocate reference signal resources of each cell, which improves the complexity of reference signal resource allocation.
  • This embodiment provides a unified measurement mechanism for each cell, which reduces the complexity of the UE performing channel measurement on each cell and improves the accuracy of channel measurement.
  • the scheduling between cells that cause the eNB to report based on channel measurements is also relatively fair.
  • Embodiment 3 By performing channel measurement based on the partial RE density occupied by the reference signal, the resource overhead of the downlink channel is reduced.
  • the PDSCH Physical Downlink Shared Channel
  • Punching means that the corresponding RE position does not carry the signal.
  • the purpose of puncturing is to reduce the interference of data on neighboring cell reference signals and improve the accuracy of channel estimation.
  • a puncturing period and a puncturing position for puncturing the position of the neighboring cell RE corresponding to the reference signal, where the puncturing position is the RE position occupied by the reference signal in the puncturing period may be configured.
  • the puncturing period is greater than the sending of the reference signal Delivery cycle
  • the puncturing period is greater than a transmission period of the reference signal.
  • the unified puncturing period of the multiple cells is an integer multiple of a transmission period of the one reference signal; and/or, the unified of the multiple cells
  • the punch density is less than or equal to the RE density occupied by the one reference signal;
  • the unified puncturing period of the plurality of cells is an integer multiple of a transmission period of a specified one of the plurality of reference signals; and/or, The uniform puncturing density of the plurality of cells is less than or equal to the RE density occupied by a specified one of the plurality of reference signals.
  • each cell is configured to adopt a uniform puncturing period (for example: 2, 5, 10 ms).
  • the uniform puncturing density puncturing the position of the neighboring cell RE corresponding to the reference signal.
  • Each punching cycle only punctured the data on the partial RE, and the punching positions of different cells in the same CoMP measurement set are staggered from each other.
  • the above-mentioned puncturing period mode may be configured as an integer multiple of the transmission period of the CRS or C SI-RS (for example, 1 time period, 2 times cycle, etc.).
  • the above-mentioned puncturing period mode may be configured as a CSI-RS transmission period. Integer multiple.
  • the above-mentioned puncturing density may be determined according to the condition of the RE occupied by the reference signal; when each cell in the CoMP set is When two reference signals (CSI-RS and CRS) are used in the configuration, since the RE density occupied by the CSI-RS is lower than the CRS, the above-mentioned puncturing density can be determined according to the occupancy of the RE of the CSI-RS. If the accuracy of the channel measurement is required to be reduced, a density lower than the density of the CSI-RS can be configured for puncturing. For example, only half the density of the RE occupied by the CSI-RS is punched.
  • the method for the eNB to configure the puncturing time of each cell in the CoMP measurement set includes but is not limited to the following:
  • subframes that are punctured by different cells are mutually staggered, that is, each cell is not punctured in the same subframe;
  • the subframes that are punctured by each cell are configured to be the same, but the OFDMs of different OFDM symbols of the same subframe are punctured;
  • the CRS pattern of the three cells shown in FIG. 4 is punctured by the three cells shown in FIG. 5, and within each 5 ms period, The data puncturing on the RE corresponding to the CRS is performed only in one subframe, and the data puncturing on the RE corresponding to the CRS of the cell 1 is performed only in the subframe 1, and a partial puncturing manner is adopted. That is, the cells 2 and 3 punct the data of the CRS of the cell 1 in the corresponding RE on the subframe 1 in the subframe 1. If the RE on the subframe 1 corresponding to the CRS is the control domain, the cells 2 and 3 No punching is performed on the RE.
  • the three cells of the cell shown in FIG. 6 can be used, and three cells are uniformly sent according to the cell 3.
  • the CSI-RS is used to determine the punching cycle and the punching density.
  • the puncturing method of the three cells shown in FIG. 6 in the 5ms period, the data puncturing on the RE corresponding to the CRS of the cell 1 is performed only in the subframe 1, and the partial puncturing is adopted.
  • the cells 2 and 3 in the subframe 1 punctify the data of the CRS of the cell 1 corresponding to the RE on the subframe 1 , and if the RE on the subframe 1 corresponding to the CRS is the control domain, the cells 2 and 3 No punching is performed on the RE.
  • the CRS corresponding to the three frequencies only the CRSs corresponding to the two frequencies are punctured.
  • the data puncturing on the RE corresponding to the CRS of the cell 2 by the cell 1, 3 is only performed in the subframe 2
  • the data puncturing on the RE corresponding to the CSI-RS of the cell 3 by the cell 1, 2 is only in the subframe.
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).
  • This embodiment provides a unified puncturing mechanism for each cell, which reduces the complexity of channel measurement by the UE for each cell, and also facilitates the use of a unified mechanism for allocating reference signal resources of each cell, thereby improving reference signal resource allocation. The complexity. By using partial puncturing of the reference signal, the resource overhead of the downlink channel is reduced.
  • the embodiment of the present invention further provides a device for performing channel measurement on a cell, and the specific structure of the device is as shown in FIG. 7, and includes the following modules:
  • the information sending module 73 is configured to send, to the user equipment, location information of the reference signal to be measured,
  • the location of the reference signal to be measured is a part of a location occupied by a reference signal of a cell.
  • the channel measurement report receiving module 74 is configured to receive a channel measurement report of the cell sent by the user equipment, where the channel measurement report is used by the user equipment to perform channel measurement on the cell according to location information of the reference signal to be measured. And get it.
  • the device may further include:
  • the puncturing processing module 71 is configured to configure a puncturing period and a puncturing position for puncturing the position of the neighboring cell RE corresponding to the reference signal, where the puncturing position is an RE occupied by the reference signal in the puncturing period a location of the neighboring cell RE corresponding to the location, where the puncturing period is greater than a sending period of the reference signal; or; configuring a puncturing period and a puncturing position for puncturing the position of the neighboring cell RE corresponding to the reference signal,
  • the hole position is a neighboring cell RE position corresponding to a part of the RE position occupied by the reference signal in the punching period; or; configuring a punching period and a punching position for punching the position of the neighboring cell RE corresponding to the reference signal
  • the puncturing position is a position of a neighboring cell RE corresponding to a part of the RE position occupied by the reference signal in the puncturing period, and the puncturing period is greater than a sending period of the reference signal.
  • the unified puncturing period of the multiple cells is an integer multiple of a transmission period of the one reference signal; and/or, the unified of the multiple cells
  • the punch density is less than or equal to the RE density occupied by the one reference signal;
  • the unified puncturing period of the plurality of cells is an integer multiple of a transmission period of a specified one of the plurality of reference signals; and/or, The uniform puncturing density of the plurality of cells is less than or equal to the RE density occupied by a specified one of the plurality of reference signals.
  • a location information configuration module 72 configured to configure a measurement period of the channel measurement by the user equipment, and a resource unit RE location occupied by a reference signal in the measurement period, where the measurement period is greater than a transmission period of the reference signal; Or; configuring a measurement period of the user equipment for channel measurement and a partial RE position occupied by a reference signal in the measurement period; or And configuring, by the user equipment, a measurement period of channel measurement and a partial RE position occupied by a reference signal in the measurement period, where the measurement period is greater than a transmission period of the reference signal.
  • the measurement period may be an integer multiple of a transmission period of the reference signal.
  • the unified measurement period of the multiple cells is an integer multiple of a transmission period of the one reference signal; and/or the unified of the multiple cells
  • the RE density occupied by the reference signal to be measured within the measurement period is less than or equal to the RE density occupied by the one reference signal;
  • the unified measurement period of the multiple cells is an integer multiple of a transmission period of a specified one of the plurality of reference signals; and/or The RE density of the reference signal to be measured of the plurality of cells in the unified measurement period of the multiple cells is less than or equal to the RE density occupied by the specified one of the plurality of reference signals.
  • the information sending module includes:
  • a first sending module configured to send, to the user equipment, at least one of a measurement moment of the user equipment in each cell and a measurement moment of the user equipment on different antenna ports of the same cell, where the user equipment performs a channel At least one of the measured measurement period, the position information of the reference signal to be measured, the measurement time of the user equipment at each cell, and the measurement time of the user equipment on different antenna ports of the same cell are used by each cell. Identification to identify.
  • the above device for performing channel measurement on the cell may be an eNB.
  • the embodiment of the present invention further provides another apparatus for performing channel measurement on a cell, and the specific implementation structure is as shown in FIG. 8, and includes the following modules:
  • the information receiving module 81 is configured to receive location information of a reference signal of the cell to be measured sent by the network, where the location of the reference signal to be measured is a part of a location occupied by the reference signal of the cell;
  • the measurement processing module 82 is configured to perform channel measurement on the cell according to location information of the reference signal to be measured, and return a channel measurement report to the network side.
  • the information receiving module 81 includes:
  • the first receiving module 811 is configured to receive a measurement period of the channel measurement performed by the user equipment sent by the network side, and a resource unit RE position occupied by a reference signal in the measurement period, where the measurement period is greater than the reference signal Or a measurement period of the channel measurement by the user equipment and a partial RE position occupied by the reference signal in the measurement period; or; the measurement period of the channel measurement by the user equipment and the measurement a portion of the RE position occupied by the reference signal in the period, the measurement period being greater than the transmission period of the reference signal.
  • the second receiving module 812 is configured to receive, by the network side, at least one of a measurement moment of the user equipment at a measurement time of each cell and a measurement moment of the user equipment on different antenna ports of the same cell, where the user At least one of a measurement period in which the device performs channel measurement, location information of a reference signal to be measured, a measurement time of the user equipment at each cell, and a measurement time of the user equipment on different antenna ports of the same cell are used. Identification of each cell to identify.
  • the device for performing channel measurement on another pair of zones may be a user terminal.
  • the embodiment of the present invention provides a unified measurement and puncturing mechanism for each cell, which reduces the complexity of channel measurement performed by each UE on each cell, and improves the accuracy of channel measurement.
  • the scheduling between cells based on channel measurement reports by the eNB is also relatively fair. It is also convenient to use a unified mechanism to allocate reference signal resources of each cell, which improves the complexity of reference signal resource allocation.
  • the resource overhead of the downlink channel is reduced.

Description

对小区进行信道测量的方法和装置 本申请要求于 2009 年 9 月 30 日提交中国专利局、 申请号为 200910235323.8、发明名称为"对小区进行信道测量的方法和装置 "的中国专 利申请的优先权, 其全部内容通过引用结合在本申请中。
技术领域 本发明涉及通信技术领域, 尤其涉及一种对 、区进行信道测量的方法 和装置。 背景技术 在无线通信系统中, 为了进行有效和高效的无线资源调度, 网络设备 必须获取足够多和具有一定准确性的下行信道状态信息。 为了使网络设备 得到这个下行信道状态信息, 需要依靠移动台的测量上报。
移动台测量上报的方法主要包括: 网络设备发送一定的参考信号给所 覆盖区域的移动台用于下行信道的测量; 移动台接收到上述参考信号后, 通过测量计算得到下行信道响应, 根据下行信道响应得到信道状态信息。 然后, 移动台根据一定的规则将上述下行信道状态信息适当量化后, 反馈 给相应的网络设备。
CoMP ( Coordinated multipoint processing, 协调多点处理 )多小区下行 信道估计技术是为了获得更高的用户吞吐量而引入的。 在 CoMP场景中, 多 个小区同时为一个 UE ( User Equipment, 用户设备)提供数据传输服务。 与 传统的单小区服务不同的是, 在 CoMP场景中, UE需要同时测量多个服务 基站下发的参考信号, 并估计出来自多个基站的下行信道信息并反馈回去。
现有技术中的一种信道状态信息的测量方法为: 网络设备向 UE下发 CRS ( common reference signal, 公共参考信号) , UE根据该 CRS来进行下行信 道估计。 上述 CRS可同时用于数据相干解调和信道测量。 以图 1中所示的无 线传输系统为例, 在该系统中, 包括 cell (小区) 1、 2、 3, 以及用户设备 UE1。 其中, 小区 1是 UE的服务小区, 小区 1、 2、 3共同组成了 UE1的 CoMP 测量集合。 UE1通过检测来自各个小区的所有下行 CRS, 获得各个小区的下 行信道状态信息。 UE1在会在每个子帧对所有的 CRS占用的 RE ( Resource element, 资源单元)进行测量, 从而得到各个小区的下行信道状态信息。 然后, UE1将得到的各个小区的下行信道信息分别反馈给各个小区。
在实际应用中, 上述 CRS可以用 CSI-RS ( CSI-RS Channel State Information Reference signal, 信道状态信息参考信号)来代替。 上述 CRS和 CSI-RS的周期及占用的 RE密度均不相同, 上述 RE密度是指, 对于发送了参 考信号 CRS和 CSI-RS的子帧, 在该子帧每个 RB ( resource block , 资源块) 上 RE的多少, 即参考信号在该子帧每个 RB上占用的 RE的数量。
在实现本发明过程中, 发明人发现现有技术中至少存在如下问题: UE 在对各个小区进行信道测量时, 在每个子帧对所有的参考信号占用的 RE都 进行测量, 将导致 UE进行信道测量的工作量比较大。 发明内容 本发明的实施例提供了一种对小区进行信道测量的方法和装置, 以实 现降低 UE进行信道测量的工作量。
一种对小区进行信道测量的方法, 包括:
向用户设备发送待测量的参考信号的位置信息, 所述的待测量的参考 信号的位置为小区的参考信号所占用的位置的一部分;
接收所述用户设备发送的小区的信道测量报告, 所述信道测量报告为 所述用户设备根据所述待测量的参考信号的位置信息对所述小区进行信道 测量而获取的。
一种对小区进行信道测量的方法, 包括:
接收网络侧发送的待测量的小区的参考信号的位置信息, 所述的待测 量的参考信号的位置信息为所述小区的参考信号所占用的位置的一部分; 根据所述待测量的参考信号的位置信息对所述小区进行信道测量, 向 网络侧返回信道测量报告。
一种对小区进行信道测量的装置, 包括:
信息发送模块, 用于向用户设备发送待测量的参考信号的位置信息, 所述的待测量的参考信号的位置信息为小区的参考信号所占用的位置的一 部分;
信道测量报告接收模块, 用于接收所述用户设备发送的小区的信道测 量报告, 所述信道测量报告为所述用户设备根据所述待测量的参考信号的 位置信息对所述小区进行信道测量而获取的。
一种对小区进行信道测量的装置, 包括:
信息接收模块, 用于接收网络侧发送的待测量的小区的参考信号的位 置信息, 所述的待测量的参考信号的位置信息为所述小区的参考信号所占 用的位置的一部分;
测量处理模块, 用于根据所述待测量的参考信号的位置信息对所述小 区进行信道测量, 向网络侧返回信道测量报告。
由上述本发明的实施例提供的技术方案可以看出, 本发明实施例通过 向用户设备发送待测量的参考信号的位置信息, 所述的待测量的参考信号 的位置为小区的参考信号所占用的位置的一部分, 从而使 UE基于参考信号 所占用的部分 RE密度进行信道测量, 降低了 UE进行信道测量的工作量。
附图说明 为了更清楚地说明本发明实施例的技术方案, 下面将对实施例描述中 所需要使用的附图作简单地介绍, 显而易见地, 下面描述中的附图仅仅是 本发明的一些实施例, 对于本领域普通技术人员来讲, 在不付出创造性劳 动性的前提下, 还可以根据这些附图获得其他的附图。
图 1为现有技术中一种 CoMP场景下的无线传输系统的结构示意图; 图 2为本发明实施例一提供的一种对小区进行信道测量的方法的处理 流程图;
图 3为本发明实施例二提供的一种对小区进行信道测量的方法的处理 流程图;
图 4为本发明实施例二提供的一种 eNB配置 CoMP集合内的 3个不同小 区的 CRS图案的示意图;
图 5为本发明实施例三提供的一种针对图 3所示的 3个小区的 CRS图案, 采用的 3个小区的打孔方式示意图;
图 6为本发明实施例三提供的一种当 CoMP集合内各个小区都配置使用 了两种参考信号 (CSI-RS和 CRS ) 时, 采用的 3个小区的打孔方式示意图; 图 7为本发明实施例提供的一种对小区进行信道测量的装置的具体结 构如图;
图 8为本发明实施例提供的另一种对小区进行信道测量的装置的具体 结构如图。 具体实施方式 在本发明实施例中, 网络侧向用户设备发送待测量的参考信号的位置 信息, 所述的待测量的参考信号的位置为小区的参考信号所占用的位置的 一部分。 然后, 所述网络侧接收所述用户设备发送的小区的信道测量报告, 所述信道测量报告为所述用户设备根据所述待测量的参考信号的位置信息 对所述小区进行信道测量而获取的。
进一步地, 所述的待测量的参考信号的位置信息包括: 所述用户设备 进行信道测量的测量周期和在所述测量周期内的参考信号所占用的资源单 元 RE位置, 所述测量周期大于所述参考信号的发送周期; 或者; 所述用户 设备进行信道测量的测量周期和在所述测量周期内的参考信号所占用的部 分 RE位置; 或者; 所述用户设备进行信道测量的测量周期和在所述测量周 期内的参考信号所占用的部分 RE位置, 所述测量周期大于所述参考信号的 发送周期。
进一步地, 所述的测量周期为所述参考信号的发送周期的整数倍。 进一步地, 当多个小区都使用一种参考信号时, 所述多个小区的统一 的测量周期为所述一种参考信号的发送周期的整数倍; 和 /或, 所述多个小 区的所述统一的测量周期内的待测量的参考信号所占用的 RE密度小于或等 于所述一种参考信号所占用的 RE密度;
当多个小区都配置使用了多种参考信号时, 所述多个小区的统一的测 量周期为所述多种参考信号中的指定一种参考信号的发送周期的整数倍; 和 /或, 所述多个小区的所述统一的测量周期内的多个小区的待测量的参考 信号所占用的 RE密度小于或等于所述多种参考信号中的指定一种参考信号 所占用的 RE密度。
进一步地, 配置对参考信号对应的邻小区 RE位置进行打孔的打孔周期 和打孔位置, 所述打孔位置为在所述打孔周期内的参考信号所占用的 RE位 置所对应的邻小区 RE位置, 所述打孔周期大于所述参考信号的发送周期; 或者;
配置对参考信号对应的邻小区 RE位置进行打孔的打孔周期和打孔位 置, 所述打孔位置为在所述打孔周期内的参考信号所占用的部分 RE位置所 对应的邻小区 RE位置;
或者;
配置对参考信号对应的邻小区 RE位置进行打孔的打孔周期和打孔位 置, 所述打孔位置为在所述打孔周期内的参考信号所占用的部分 RE位置所 对应的邻小区 RE位置, 所述打孔周期大于所述参考信号的发送周期。
进一步地, 当多个小区都使用一种参考信号时, 所述的多个小区的统 一的打孔周期为所述一种参考信号的发送周期的整数倍; 和 /或, 所述的多 个小区的统一的打孔密度为小于或等于所述一种参考信号所占用的 RE密 度;
当多个小区都使用了多种参考信号时, 所述的多个小区的统一的打孔 周期为所述多种参考信号中的指定一种参考信号的发送周期的整数倍; 和 / 或, 所述的多个小区的统一的打孔密度小于或等于所述多种参考信号中的 指定一种参考信号所占用的 RE密度。
进一步地, 向所述用户设备发送: 所述用户设备在各个小区的测量时 刻和所述用户设备在同一个小区的不同天线端口上的测量时刻中的至少一 项。
进一步地, 所述用户设备进行信道测量的测量周期、 待测量的参考信 号的位置信息、 所述用户设备在各个小区的测量时刻和所述用户设备在同 一个小区的不同天线端口上的测量时刻中的至少一项采用各个小区的标识 来识别。
为便于对本发明实施例的理解, 下面将结合附图以几个具体实施例为 例做进一步的解释说明, 且各个实施例并不构成对本发明实施例的限定。
实施例一
该实施例提供的一种对小区进行信道测量的方法的处理流程如图 2所 示, 包括如下处理步骤:
步骤 21、 向用户设备发送待测量的参考信号的位置信息, 所述的待测 量的参考信号的位置为小区的参考信号所占用的位置的一部分。
所述的待测量的参考信号的位置信息包括: 所述用户设备进行信道测 量的测量周期和在所述测量周期内的参考信号所占用的资源单元 RE位置, 所述测量周期大于所述参考信号的发送周期; 或者; 所述用户设备进行信 道测量的测量周期和在所述测量周期内的参考信号所占用的部分 RE位置; 或者; 所述用户设备进行信道测量的测量周期和在所述测量周期内的参考 信号所占用的部分 RE位置, 所述测量周期大于所述参考信号的发送周期。 步骤 22、 接收所述用户设备发送的小区的信道测量报告, 所述信道测 量报告为所述用户设备根据所述待测量的参考信号的位置信息对所述小区 进行信道测量而获取的。
实施例二
在该实施例中, 无论各个小区采用的参考信号是采用 CSI-RS或 CRS, 可以配置 UE在各个小区采用统一的信道测量机制。
该实施例提供的一种对小区进行信道测量的方法的处理流程如图 3所 示, 包括如下处理步骤:
步骤 31、 eNB ( Enhanced Node B , 增强型基站) 配置待测量的参考信 号的位置信息, 以便于 UE根据所述位置信息对各个小区进行信道测量。
无论上述用于信道状态信息测量的待测量的参考信号为 CSI-RS还是 CRS, eNB都配置上述待测量的参考信号的位置信息。 然后, 将上述位置信 息发送给 UE, 以使 UE根据所述位置信息对各个小区进行信道测量。
上述 eNB可以为对 CoMP场景中各个小区进行统一管理的基站。
所述的待测量的参考信号的位置信息包括: 所述用户设备进行信道测 量的测量周期和在所述测量周期内的参考信号所占用的 RE位置, 所述测量 周期大于所述参考信号的发送周期; 或者; 所述用户设备进行信道测量的 测量周期和在所述测量周期内的参考信号所占用的部分 RE位置; 或者; 所 述用户设备进行信道测量的测量周期和在所述测量周期内的参考信号所占 用的部分 RE位置, 所述测量周期大于所述参考信号的发送周期。
UE不是在发送了参考信号的每个子帧和参考信号所占用的每个 RE都进 行信道测量。
比如, 当上述参考信号为 CRS时, UE每次执行信道测量只检测 CRS所 占用的部分 RE上的数据, 而不是检测 CRS占用的全部 RE上的数据。
eNB配置 UE进行信道测量的测量周期的方法可以包括但不限于如下的 几种:
1、 可以按照系统, 比如 LTE ( Long Term Evolution, 长期演进) -A系 统中配置的 CRS或 CSI-RS的发送周期进行配置, 配置测量周期可以为 CRS 或 CSI-RS的发送周期的整数倍(如: 1倍周期, 2倍周期, 等等) ;
当 CoMP集合内不同小区都使用一种参考信号(CSI-RS或 CRS )时, 则 配置测量周期为上述一种参考信号的发送周期的整数倍; 当 CoMP集合内不 同小区分别使用了不同的参考信号 (CSI-RS和 CRS ) 时, 由于 CSI-RS的发 送周期比 CRS长, 则可以配置测量周期为 CSI-RS的发送周期的整数倍。
2、 根据实际的情况(发射模式, 小区负载大小, 信道环境等)配制 UE 进行信道测量的测量周期。
3、 配置测量周期与 CRS或 CSI-RS的打孔周期相同, CRS或 CSI-RS具体 的打孔实现方法见实施例二。
可选的, 步骤 32、 eNB配置 UE在各个小区的测量时刻, 以及配置 UE在 同一个小区的不同天线端口上的测量时刻。
可选的,在 CoMP场景中, eNB配置 UE在各个小区都按照统一的测量周 期进行信道测量。
eNB配置 UE在 CoMP集合内的各个小区的测量时刻可以达到如下的效 果:
1、 不同小区测量的子帧相互错开, 即不在同一个子帧;
2、 不同小区测量的子帧相同, 但基于该同一子帧的不同的 OFDM ( orthogonal frequency division multiplexing , 正交频分复用 )符号的 RE进行 测量;
3、 不同小区测量的子帧相同, 并且基于该同一子帧的相同的 OFDM符 号的 RE进行测量。
4、 可以配置在参考信号 CRS或 CSI-RS的 PBCH ( Primary Broadcast Channel,主广播信道) /SCH ( Synchronize Channel, 同步信道) 的所在的子 帧上进行测量;
5、 配置测量数据域上的 CRS所占用的 RE, 不测量控制域上 CRS所占用 的 RE;
6、 在邻小区打孔的 CRS所占用的 RE的位置进行测量。
上述 6种方法可以单独使用, 也可以部分结合起来使用。
可选的,在 CoMP场景和单小区场景中, eNB配置 UE在同一个小区的不 同天线端口上的测量时刻的方法包括但不限于如下的几种:
1、配置 UE在不同的天线端口上基于不同的子帧进行测量, 即各个天线 端口上进行测量的子帧互不相同。
2、配置 UE在不同的天线端口上测量的子帧相同,但基于该同一子帧的 不同的 OFDM符号的 RE进行测量。
3、配置 UE在不同的天线端口上测量的子帧相同,并且基于该同一子帧 的相同的 OFDM符号的 RE进行测量。
可选的,在 CoMP场景中, eNB配置 UE对各个小区或各个小区的各个天 线端口基于相同的测量 RE密度进行信道测量。 比如, eNB配置 UE进行信道 测量基于的测量 RE密度可能用如下的实现方式:
当 CoMP集合内不同小区都使用一种参考信号(CSI-RS或 CRS )时, 则 按照该一种参考信号配置的 RE密度进行信道测量, 比如, 一个 CRS端口占 用 8个 RE, 则可以只在其中的 6个 RE上进行信道测量; 当 CoMP集合内不同 小区分别使用了不同的参考信号 (CSI-RS或 CRS ) 时, 则可以按照 CSI-RS 配置的 RE密度进行信道测量; 如果信道测量的准确性要求降低, 则可以配 置比 CSI-RS密度更低的密度进行信道测量。 例如只基于 CSI-RS的一半密度 进行信道测量。
可选的,上述 UE进行信道测量所基于的测量 RE密度可以和各个小区的 参考信号的打孔密度相同。
在实际应用中, eNB可以根据实际情况向 UE发送上述 CoMP模式与单小 区模式之间的切换消息, UE根据接收到的切换消息在上述 CoMP模式与单 小区模式之间进行切换。 eNB可以配置 UE无论 CoMP模式切换为单小区模 式,还是单小区模式切换为 CoMP模式, 均使用相同的信道测量机制; 或者, 配置 UE从单小区模式切换到 CoMP模式时, 采用使用 CoMP模式下的信道测 量机制, 从 CoMP模式切换为单小区模式时, 采用使用单小区模式下的信道 测量机制。
可选的, 步骤 33、 eNB按照统一的参考信号的打孔机制, 配置对参考信 号对应的邻小区 RE位置进行打孔的打孔周期和打孔位置。
上述打孔机制可以包括打孔周期和打孔位置。 上述打孔机制的具体配 置方法可以为: 配置对参考信号对应的邻小区 RE位置进行打孔的打孔周期 和打孔位置, 所述打孔位置为在所述打孔周期内的参考信号所占用的 RE位 置所对应的邻小区 RE位置, 所述打孔周期大于所述参考信号的发送周期; 或者; 配置对参考信号对应的邻小区 RE位置进行打孔的打孔周期和打 孔位置, 所述打孔位置为在所述打孔周期内的参考信号所占用的部分 RE位 置所对应的邻小区 RE位置;
或者; 配置对参考信号对应的邻小区 RE位置进行打孔的打孔周期和打 孔位置, 所述打孔位置为在所述打孔周期内的参考信号所占用的部分 RE位 置所对应的邻小区 RE位置, 所述打孔周期大于所述参考信号的发送周期。
比如, 在 CoMP场景中, 该参考信号可以为 CSI-RS或 CRS。 若 CoMP集 合内 3个小区都配置使用 CRS, 则 eNB配置 3个不同小区的 CRS图案的可以如 图 4所示, 各个小区的 CRS图案按照频域分别错开。
在单小区场景中, eNB也将按照统一的参考信号的打孔机制,给该小区 配置用于信道状态信息测量的参考信号, 该参考信号可以为 CSI-RS或 CRS。
上述统一的参考信号的打孔机制将在实施例三中详细描述。
步骤 34、 eNB向 UE发送携带信道测量方式的通知消息, UE根据上述通 知消息,对各个小区进行信道估计和信道测量,向 eNB返回各个小区的信道 状态测量信息。
eNB向 UE发送携带信道测量方式的通知消息, 上述信道测量方式中包 括上述配置的: 待测量的参考信号的位置信息、 可选的还包括: 各个小区 用于信道测量的参考信号 (CSI-RS或 CRS ) 、 测量周期、 进行信道测量基 于的 RE密度、 UE在各个小区的测量时刻、 UE在同一个小区的不同天线端 口上的测量时刻。
UE根据上述通知消息, 对各个小区进行信道估计和信道测量, 向 eNB 返回各个小区的信道状态测量信息。
在实际应用中, 可以使用各个小区的 Cell-ID来标识所述用户设备进行 信道测量的测量周期、 待测量的参考信号的位置信息、 所述用户设备在各 个小区的测量时刻、 所述用户设备在同一个小区的不同天线端口上的测量 时刻和各个小区的打孔方式中至少一项。
下面以打孔方式的隐性通知为例 (上述其他信息的隐性通知的方法类 似) , 由于不同小区的 CRS打孔的位置不同。
此外, UE需要测量 CoMP测量集合中各个小区的下行信道, 因此需要 通知 UE测量集合中所有小区的打孔方式。 本实施例中, 可以采用与 celljd 绑定的隐式映射的方式来通知 UE。 也就是说, 每个小区 CRS打孔方式(包 括周期和图案)与该小区的 celljd直接相联系, eNB通知 UE1测量集合中所 有小区的 cell_id, UE根据不同的 celljd映射出不同的参考信号位置,在相应 的位置对该小区的下行信道进行估计。 具体来说, 仍然参考图 4所示, CRS 打孔周期为 5ms, CRS可能的打孔方式有 5种, 而网络分配小区 2的 cell_id_2 为 3。 UE1在收到了 cell_id_2后, 通过下面简单的取模运算就可以得到小区 2 的 CRS打孔所在的子帧的位置:
cell_id_2 mod 5 = 1
注意这种通知方式要求 eNB在分配 celljd是考虑同一个 CoMP测量集合 中所有小区 CRS按照频域分别错开。 在实际应用中, 可以定义两种模式: 机制使能模式和机制禁止模式, 机制使能模式是指采用本发明实施例所描述的方案进行信道测量, 机制禁 止模式是指不采用本发明实施例所描述的方案进行信道测量, 保持现有的 信道测量方案不变。 eNB根据实际情况向 UE发送上述两种模式的切换消息, UE根据接收到的切换消息在上述两种模式之间进行切换。
对于 CoMP测量集合中的多个小区来说, 由于多个小区可能分别配置了 CRS或 CSI-RS, 多个小区采用的多个参考信号的周期和占用的 RE密度可能 不同, UE需要针对不同的参考信号在各个小区分别采用不同的处理方式进 行信道测量, 从而导致 UE对各个小区进行信道测量的复杂度大大提高, 信 道测量的准确性将大大降低。 也不方便使用统一的机制对各小区的参考信 号资源进行分配, 提高了参考信号资源分配的复杂度。
该实施例给各个小区提供了统一的测量机制, 降低了 UE对各个小区进 行信道测量的复杂度,提高了信道测量的准确性。使得 eNB基于信道测量报 告的小区之间的调度也相对公平。
通过基于参考信号所占用的部分 RE密度进行信道测量, 降低了下行信 道的资源开销。 实施例三
为了提高对邻小区信道估计的进一步准确性, 通常在 CoMP测量集合 内, 把所有与邻小区 CRS对应的 RE上的 PDSCH ( Physical Downlink Shared Channel, 下行物理共享信道)数据打孔。 这里打孔是指对应的 RE位置不承 载信号。 打孔目的是为了降低数据对于邻小区参考信号的干扰, 提升信道 估计的准确性。
在该实施例中, 可以配置对参考信号对应的邻小区 RE位置进行打孔的 打孔周期和打孔位置, 所述打孔位置为在所述打孔周期内的参考信号所占 用的 RE位置所对应的邻小区 RE位置, 所述打孔周期大于所述参考信号的发 送周期;
或者;
配置对参考信号对应的邻小区 RE位置进行打孔的打孔周期和打孔位 置, 所述打孔位置为在所述打孔周期内的参考信号所占用的部分 RE位置所 对应的邻小区 RE位置;
或者;
配置对参考信号对应的邻小区 RE位置进行打孔的打孔周期和打孔位 置, 所述打孔位置为在所述打孔周期内的参考信号所占用的部分 RE位置所 对应的邻小区 RE位置, 所述打孔周期大于所述参考信号的发送周期。
当多个小区都使用一种参考信号时, 所述的多个小区的统一的打孔周 期为所述一种参考信号的发送周期的整数倍; 和 /或, 所述的多个小区的统 一的打孔密度为小于或等于所述一种参考信号所占用的 RE密度;
当多个小区都使用了多种参考信号时, 所述的多个小区的统一的打孔 周期为所述多种参考信号中的指定一种参考信号的发送周期的整数倍; 和 / 或, 所述的多个小区的统一的打孔密度小于或等于所述多种参考信号中的 指定一种参考信号所占用的 RE密度。
在该实施例中, 为了避免打孔带来太大的开销, 对于信道测量, 无论 参考信号是采用 CSI-RS或 CRS, 配置各个小区采用统一的打孔周期(例如: 2,5,10ms ) , 统一的打孔密度对参考信号对应的邻小区 RE位置进行打孔。 每次打孔周期只对部分 RE上的数据打孔,同一个 CoMP测量集合中的不同小 区的打孔位置相互错开。 当 CoMP集合内各个小区都配置使用了一种参考信号( CRS或 CSI-RS ) 时,上述打孔周期方式可以配置为 CRS或 C SI-RS的发送周期的整数倍(如: 1倍周期, 2倍周期, 等等)。 当 CoMP集合内各个小区都配置使用了两种 参考信号( CSI-RS和 CRS )时, 由于 CSI-RS的发送周期比 CRS长, 则上 述打孔周期方式可以配置为 CSI-RS的发送周期的整数倍。 当 CoMP集合内各个小区都配置使用了一种参考信号( CRS或 CSI-RS ) 时, 上述打孔密度可以根据该一种参考信号所占用的 RE的情况而确定; 当 CoMP集合内各个小区都配置使用了两种参考信号( CSI-RS和 CRS ) 时, 由于 CSI-RS所占用的 RE密度比 CRS低,则上述打孔密度可以根据 CSI-RS 的所占用的 RE的情况而确定。如果信道测量的准确性要求降低, 则可以配 置比 CSI-RS密度更低的密度进行打孔。 例如只打孔 CSI-RS所占用的 RE 的一半密度。
在实际应用中, 通常对于出现 PBCH/SCH的 RE上不进行打孔。
eNB配置 CoMP测量集合内的各个小区的打孔时刻的方法包括但不限 于如下的几种:
1、 配置不同小区打孔的子帧相互错开, 即各个小区不在同一个子帧进 行打孔;
2、 配置各个小区打孔的子帧相同, 但基于该同一子帧的不同的 OFDM 符号的 RE进行打孔;
3、配置各个小区打孔的子帧相同,并且基于该同一子帧的相同的 OFDM 符号的 RE进行打孔。
4、 只对 CRS对应的数据域 RE上的数据进行打孔, 不对 CRS对应的控制 域 RE上的数据进行打孔。
比如, 当 CoMP集合内各个小区都配置使用 CRS时, 针对图 4所示的 3个 小区的 CRS图案, 采用图 5所示的 3个小区的打孔方式, 在 5ms周期内, 每个 小区的 CRS对应的 RE上的数据打孔只在一个子帧内进行, 小区 1的 CRS对应 的 RE上的数据打孔只在子帧 1进行, 并且采用部分打孔的方式。 即小区 2和 3 在子帧 1中对小区 1的 CRS在该子帧 1上对应的 RE上的数据进行打孔, 如果 CRS对应的子帧 1上的 RE为控制域, 则小区 2、 3对该 RE不打孔。 在 3个频率 对应的 CRS中只对两个频率对应的 CRS进行打孔。 同理, 小区 1、 3对小区 2 的 CRS对应的 RE上的数据打孔只在子帧 2进行, 小区 1、 2对小区 3的 CRS对 应的 RE上的数据打孔只在子帧 3进行。
又比如, 当 CoMP集合内各个小区都配置使用了两种参考信号( CSI-RS 和 CRS ) 时, 可以采用图 6所示的 3个小区的打孔方式, 3个小区都统一按照 小区 3发送的 CSI-RS来确定打孔周期和打孔密度。采用图 6所示的 3个小区的 打孔方式, 在 5ms周期内, 小区 1的 CRS对应的 RE上的数据打孔只在子帧 1 进行,并且采用部分打孔的方式。 即小区 2和 3在子帧 1中对小区 1的 CRS在该 子帧 1上对应的 RE上的数据进行打孔, 如果 CRS对应的子帧 1上的 RE为控制 域, 则小区 2、 3对该 RE不打孔。 在 3个频率对应的 CRS中只对两个频率对应 的 CRS进行打孔。 同理, 小区 1、 3对小区 2的 CRS对应的 RE上的数据打孔只 在子帧 2进行, 小区 1、 2对小区 3的 CSI-RS对应的 RE上的数据打孔只在子帧 3 进行, 由于 CSI-RS密度较小, 小区 1、 2在子帧 3上对小区 3的 CSI RS对应的 所有 RE都进行打孔。 本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流 程, 是可以通过计算机程序来指令相关的硬件来完成, 所述的程序可存储 于一计算机可读取存储介质中, 该程序在执行时, 可包括如上述各方法的 实施例的流程。 其中, 所述的存储介质可为磁碟、 光盘、 只读存储记忆体 ( Read-Only Memory, ROM )或随机存储记忆体 ( Random Access Memory, RAM )等。
该实施例通过给各个小区提供了统一打孔的机制, 降低了 UE对各个小 区进行信道测量的复杂度, 也方便使用统一的机制对各小区的参考信号资 源进行分配, 提高了参考信号资源分配的复杂度。 通过采用对参考信号进 行部分打孔, 降低了下行信道的资源开销。 实施例三
本发明实施例还提供了一种对小区进行信道测量的装置, 该装置的具 体结构如图 7所示, 包括如下模块:
信息发送模块 73, 用于向用户设备发送待测量的参考信号的位置信息, 所述的待测量的参考信号的位置为小区的参考信号所占用的位置的一部 分。
信道测量报告接收模块 74, 用于接收所述用户设备发送的小区的信道 测量报告, 所述信道测量报告为所述用户设备根据所述待测量的参考信号 的位置信息对所述小区进行信道测量而获取的。
所述的装置还可以包括:
打孔处理模块 71, 用于配置对参考信号对应的邻小区 RE位置进行打孔 的打孔周期和打孔位置, 所述打孔位置为在所述打孔周期内的参考信号所 占用的 RE位置所对应的邻小区 RE位置, 所述打孔周期大于所述参考信号的 发送周期; 或者; 配置对参考信号对应的邻小区 RE位置进行打孔的打孔周 期和打孔位置, 所述打孔位置为在所述打孔周期内的参考信号所占用的部 分 RE位置所对应的邻小区 RE位置; 或者; 配置对参考信号对应的邻小区 RE 位置进行打孔的打孔周期和打孔位置, 所述打孔位置为在所述打孔周期内 的参考信号所占用的部分 RE位置所对应的邻小区 RE位置, 所述打孔周期大 于所述参考信号的发送周期。
当多个小区都使用一种参考信号时, 所述的多个小区的统一的打孔周 期为所述一种参考信号的发送周期的整数倍; 和 /或, 所述的多个小区的统 一的打孔密度为小于或等于所述一种参考信号所占用的 RE密度;
当多个小区都使用了多种参考信号时, 所述的多个小区的统一的打孔 周期为所述多种参考信号中的指定一种参考信号的发送周期的整数倍; 和 / 或, 所述的多个小区的统一的打孔密度小于或等于所述多种参考信号中的 指定一种参考信号所占用的 RE密度。
位置信息配置模块 72, 用于配置所述用户设备进行信道测量的测量周 期和在所述测量周期内的参考信号所占用的资源单元 RE位置, 所述测量周 期大于所述参考信号的发送周期; 或者; 配置所述用户设备进行信道测量 的测量周期和在所述测量周期内的参考信号所占用的部分 RE位置; 或者; 配置所述用户设备进行信道测量的测量周期和在所述测量周期内的参考信 号所占用的部分 RE位置, 所述测量周期大于所述参考信号的发送周期。
所述的测量周期可以为所述参考信号的发送周期的整数倍。
当多个小区都使用一种参考信号时, 所述多个小区的统一的测量周期 为所述一种参考信号的发送周期的整数倍; 和 /或, 所述多个小区的所述统 一的测量周期内的待测量的参考信号所占用的 RE密度小于或等于所述一种 参考信号所占用的 RE密度;
当多个小区都配置使用了多种参考信号时, 所述多个小区的统一的测 量周期为所述多种参考信号中的指定一种参考信号的发送周期的整数倍; 和 /或, 所述多个小区的所述统一的测量周期内的多个小区的待测量的参考 信号所占用的 RE密度小于或等于所述多种参考信号中的指定一种参考信号 所占用的 RE密度。
所述的信息发送模块包括:
第一发送模块, 用于向用户设备发送所述用户设备在各个小区的测量 时刻和所述用户设备在同一个小区的不同天线端口上的测量时刻中的至少 一项, 所述用户设备进行信道测量的测量周期、 待测量的参考信号的位置 信息、 所述用户设备在各个小区的测量时刻和所述用户设备在同一个小区 的不同天线端口上的测量时刻中的至少一项采用各个小区的标识来识别。
上述对小区进行信道测量的装置可以为 eNB。
本发明实施例还提供了另一种对小区进行信道测量的装置, 其具体实 现结构如图 8所示, 包括如下模块:
信息接收模块 81, 用于接收网络侧发送的待测量的小区的参考信号的 位置信息, 所述的待测量的参考信号的位置为所述小区的参考信号所占用 的位置的一部分;
测量处理模块 82, 用于根据所述待测量的参考信号的位置信息对所述 小区进行信道测量, 向网络侧返回信道测量报告。 所述的信息接收模块 81包括:
第一接收模块 811, 用于接收网络侧发送的所述用户设备进行信道测量 的测量周期和在所述测量周期内的参考信号所占用的资源单元 RE位置, 所 述测量周期大于所述参考信号的发送周期; 或者; 所述用户设备进行信道 测量的测量周期和在所述测量周期内的参考信号所占用的部分 RE位置; 或 者; 所述用户设备进行信道测量的测量周期和在所述测量周期内的参考信 号所占用的部分 RE位置, 所述测量周期大于所述参考信号的发送周期。
第二接收模块 812, 用于接收网络侧发送的: 所述用户设备在各个小区 的测量时刻和所述用户设备在同一个小区的不同天线端口上的测量时刻中 的至少一项, 所述用户设备进行信道测量的测量周期、 待测量的参考信号 的位置信息、 所述用户设备在各个小区的测量时刻和所述用户设备在同一 个小区的不同天线端口上的测量时刻中的至少一项采用各个小区的标识来 识别。
上述另一种对 、区进行信道测量的装置可以为用户终端。
综上所述, 本发明实施例给各个小区提供了统一的测量和打孔的机制, 降低了 UE对各个小区进行信道测量的复杂度, 提高了信道测量的准确性。 使得 eNB基于信道测量报告的小区之间的调度也相对公平。也方便使用统一 的机制对各小区的参考信号资源进行分配, 提高了参考信号资源分配的复 杂度。
本发明实施例通过采用对参考信号进行部分打孔, 以及基于参考信号 所占用的部分 RE密度进行信道测量, 降低了下行信道的资源开销。 以上所述, 仅为本发明较佳的具体实施方式, 但本发明的保护范围并 不局限于此, 任何熟悉本技术领域的技术人员在本发明揭露的技术范围内, 可轻易想到的变化或替换, 都应涵盖在本发明的保护范围之内。 因此, 本 发明的保护范围应该以权利要求的保护范围为准。

Claims

权利要求
1、 一种对小区进行信道测量的方法, 其特征在于, 包括:
向用户设备发送待测量的参考信号的位置信息, 所述的待测量的参考 信号的位置为小区的参考信号所占用的位置的一部分;
接收所述用户设备发送的小区的信道测量报告, 所述信道测量报告为 所述用户设备根据所述待测量的参考信号的位置信息对所述小区进行信道 测量而获取的。
2、 根据权利要求 1所述的对小区进行信道测量的方法, 其特征在于, 所述的待测量的参考信号的位置信息包括:
所述用户设备进行信道测量的测量周期和在所述测量周期内的参考信 号所占用的资源单元 RE位置,所述测量周期大于所述参考信号的发送周期; 或者;
所述用户设备进行信道测量的测量周期和在所述测量周期内的参考信 号所占用的部分 RE位置;
或者;
所述用户设备进行信道测量的测量周期和在所述测量周期内的参考信 号所占用的部分 RE位置, 所述测量周期大于所述参考信号的发送周期。
3、 根据权利要求 2所述的对小区进行信道测量的方法, 其特征在于, 所述的测量周期为所述参考信号的发送周期的整数倍。
4、 根据权利要求 2所述的对小区进行信道测量的方法, 其特征在于: 当多个小区都使用一种参考信号时, 所述多个小区的统一的测量周期 为所述一种参考信号的发送周期的整数倍; 和 /或, 所述多个小区的所述统 一的测量周期内的待测量的参考信号所占用的 RE密度小于或等于所述一种 参考信号所占用的 RE密度;
当多个小区都配置使用了多种参考信号时, 所述多个小区的统一的测 量周期为所述多种参考信号中的指定一种参考信号的发送周期的整数倍; 和 /或, 所述多个小区的所述统一的测量周期内的多个小区的待测量的参考 信号所占用的 RE密度小于或等于所述多种参考信号中的指定一种参考信号 所占用的 RE密度。
5、 根据权利要求 2所述的对小区进行信道测量的方法, 其特征在于, 所述的方法还包括:
配置对参考信号对应的邻小区 RE位置进行打孔的打孔周期和打孔位 置, 所述打孔位置为在所述打孔周期内的参考信号所占用的 RE位置所对应 的邻小区 RE位置, 所述打孔周期大于所述参考信号的发送周期;
或者;
配置对参考信号对应的邻小区 RE位置进行打孔的打孔周期和打孔位 置, 所述打孔位置为在所述打孔周期内的参考信号所占用的部分 RE位置所 对应的邻小区 RE位置;
或者;
配置对参考信号对应的邻小区 RE位置进行打孔的打孔周期和打孔位 置, 所述打孔位置为在所述打孔周期内的参考信号所占用的部分 RE位置所 对应的邻小区 RE位置, 所述打孔周期大于所述参考信号的发送周期。
6、 根据权利要求 5所述的对小区进行信道测量的方法, 其特征在于: 当多个小区都使用一种参考信号时, 所述的多个小区的统一的打孔周 期为所述一种参考信号的发送周期的整数倍; 和 /或, 所述的多个小区的统 一的打孔密度为小于或等于所述一种参考信号所占用的 RE密度;
当多个小区都使用了多种参考信号时, 所述的多个小区的统一的打孔 周期为所述多种参考信号中的指定一种参考信号的发送周期的整数倍; 和 / 或, 所述的多个小区的统一的打孔密度小于或等于所述多种参考信号中的 指定一种参考信号所占用的 RE密度。
7、 根据权利要求 2至 6任一项所述的对小区进行信道测量的方法, 其特 征在于, 所述的方法还包括:
向所述用户设备发送: 所述用户设备在各个小区的测量时刻和所述用 户设备在同一个小区的不同天线端口上的测量时刻中的至少一项。
8、 根据权利要求 7所述的对小区进行信道测量的方法, 其特征在于: 所述用户设备进行信道测量的测量周期、 待测量的参考信号的位置信 息、 所述用户设备在各个小区的测量时刻和所述用户设备在同一个小区的 不同天线端口上的测量时刻中的至少一项采用各个小区的标识来识别。
9、 一种对小区进行信道测量的方法, 其特征在于, 包括:
接收网络侧发送的待测量的小区的参考信号的位置信息, 所述的待测 量的参考信号的位置为所述小区的参考信号所占用的位置的一部分;
根据所述待测量的参考信号的位置信息对所述小区进行信道测量, 向 网络侧返回信道测量报告。
10、 根据权利要求 9所述的对小区进行信道测量的方法, 其特征在于, 所述的待测量的参考信号的位置信息包括:
所述用户设备进行信道测量的测量周期和在所述测量周期内的参考信 号所占用的资源单元 RE位置,所述测量周期大于所述参考信号的发送周期; 或者;
所述用户设备进行信道测量的测量周期和在所述测量周期内的参考信 号所占用的部分 RE位置;
或者;
所述用户设备进行信道测量的测量周期和在所述测量周期内的参考信 号所占用的部分 RE位置, 所述测量周期大于所述参考信号的发送周期。
11、 根据权利要求 10所述的对小区进行信道测量的方法, 其特征在于, 所述的方法还包括:
接收网络侧发送的: 所述用户设备在各个小区的测量时刻和所述用户 设备在同一个小区的不同天线端口上的测量时刻中的至少一项。
12、 根据权利要求 11所述的对小区进行信道测量的方法, 其特征在于: 所述用户设备进行信道测量的测量周期、 待测量的参考信号的位置信 息、 所述用户设备在各个小区的测量时刻和所述用户设备在同一个小区的 不同天线端口上的测量时刻中的至少一项采用各个小区的标识来识别。
13、 一种对小区进行信道测量的装置, 其特征在于, 包括:
信息发送模块, 用于向用户设备发送待测量的参考信号的位置信息, 所述的待测量的参考信号的位置为小区的参考信号所占用的位置的一部 分;
信道测量报告接收模块, 用于接收所述用户设备发送的小区的信道测 量报告, 所述信道测量报告为所述用户设备根据所述待测量的参考信号的 位置信息对所述小区进行信道测量而获取的。
14、 根据权利要求 13所述的对小区进行信道测量的装置, 其特征在于, 所述的装置还包括:
位置信息配置模块, 用于配置所述用户设备进行信道测量的测量周期 和在所述测量周期内的参考信号所占用的资源单元 RE位置, 所述测量周期 大于所述参考信号的发送周期; 或者; 配置所述用户设备进行信道测量的 测量周期和在所述测量周期内的参考信号所占用的部分 RE位置; 或者; 配 置所述用户设备进行信道测量的测量周期和在所述测量周期内的参考信号 所占用的部分 RE位置, 所述测量周期大于所述参考信号的发送周期。
15、 根据权利要求 13或 14所述的对小区进行信道测量的装置, 其特征 在于, 所述的装置还包括:
打孔处理模块, 用于配置对参考信号对应的邻小区 RE位置进行打孔的 打孔周期和打孔位置, 所述打孔位置为在所述打孔周期内的参考信号所占 用的 RE位置所对应的邻小区 RE位置, 所述打孔周期大于所述参考信号的发 送周期; 或者; 配置对参考信号对应的邻小区 RE位置进行打孔的打孔周期 和打孔位置, 所述打孔位置为在所述打孔周期内的参考信号所占用的部分 RE位置所对应的邻小区 RE位置; 或者; 配置对参考信号对应的邻小区 RE 位置进行打孔的打孔周期和打孔位置, 所述打孔位置为在所述打孔周期内 的参考信号所占用的部分 RE位置所对应的邻小区 RE位置, 所述打孔周期大 于所述参考信号的发送周期。
16、 根据权利要求 14所述的对小区进行信道测量的装置, 其特征在于, 所述的信息发送模块包括:
第一发送模块, 用于向用户设备发送所述用户设备在各个小区的测量 时刻和所述用户设备在同一个小区的不同天线端口上的测量时刻中的至少 一项, 所述用户设备进行信道测量的测量周期、 待测量的参考信号的位置 信息、 所述用户设备在各个小区的测量时刻和所述用户设备在同一个小区 的不同天线端口上的测量时刻中的至少一项采用各个小区的标识来识别。
17、 一种对小区进行信道测量的装置, 其特征在于, 包括:
信息接收模块, 用于接收网络侧发送的待测量的小区的参考信号的位 置信息, 所述的待测量的参考信号的位置为所述小区的参考信号所占用的 位置的一部分;
测量处理模块, 用于根据所述待测量的参考信号的位置信息对所述小 区进行信道测量, 向网络侧返回信道测量报告。
18、 根据权利要求 17所述的对小区进行信道测量的装置, 其特征在于, 所述的信息接收模块包括:
第一接收模块, 用于接收网络侧发送的所述用户设备进行信道测量的 测量周期和在所述测量周期内的参考信号所占用的资源单元 RE位置, 所述 测量周期大于所述参考信号的发送周期; 或者; 所述用户设备进行信道测 量的测量周期和在所述测量周期内的参考信号所占用的部分 RE位置;或者; 所述用户设备进行信道测量的测量周期和在所述测量周期内的参考信号所 占用的部分 RE位置, 所述测量周期大于所述参考信号的发送周期。
19、 根据权利要求 17或 18所述的对小区进行信道测量的装置, 其特征 在于, 所述的信息接收模块包括:
第二接收模块, 用于接收网络侧发送的: 所述用户设备在各个小区的 测量时刻和所述用户设备在同一个小区的不同天线端口上的测量时刻中的 至少一项, 所述用户设备进行信道测量的测量周期、 待测量的参考信号的 位置信息、 所述用户设备在各个小区的测量时刻和所述用户设备在同一个 小区的不同天线端口上的测量时刻中的至少一项采用各个小区的标识来识 别。
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EP2472940B1 (en) 2014-11-12
EP2472940A4 (en) 2012-08-08
US20120190356A1 (en) 2012-07-26
US8588762B2 (en) 2013-11-19
CN102036264A (zh) 2011-04-27

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