WO2015010510A1 - 发现信号测量的方法、基站及终端 - Google Patents

发现信号测量的方法、基站及终端 Download PDF

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Publication number
WO2015010510A1
WO2015010510A1 PCT/CN2014/080273 CN2014080273W WO2015010510A1 WO 2015010510 A1 WO2015010510 A1 WO 2015010510A1 CN 2014080273 W CN2014080273 W CN 2014080273W WO 2015010510 A1 WO2015010510 A1 WO 2015010510A1
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Prior art keywords
measurement
discovery signal
base station
pattern
transmission
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PCT/CN2014/080273
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English (en)
French (fr)
Inventor
莫林梅
赵亚军
徐汉青
高永红
曹爱军
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ZTE Corp
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ZTE Corp
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Application filed by ZTE Corp filed Critical ZTE Corp
Priority to HK16112004.1A priority Critical patent/HK1223770A1/zh
Priority to JP2016528313A priority patent/JP6239752B2/ja
Priority to CA2919354A priority patent/CA2919354C/en
Priority to US15/006,493 priority patent/US9769690B2/en
Priority to EP14829870.6A priority patent/EP3016464B1/en
Publication of WO2015010510A1 publication Critical patent/WO2015010510A1/zh
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W24/00Supervisory, monitoring or testing arrangements
    • H04W24/08Testing, supervising or monitoring using real traffic
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W24/00Supervisory, monitoring or testing arrangements
    • H04W24/06Testing, supervising or monitoring using simulated traffic
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/08Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/12Access restriction or access information delivery, e.g. discovery data delivery using downlink control channel
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/16Discovering, processing access restriction or access information
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W16/00Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/02Resource partitioning among network components, e.g. reuse partitioning
    • H04W16/10Dynamic resource partitioning
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/20Manipulation of established connections
    • H04W76/27Transitions between radio resource control [RRC] states
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00Reducing energy consumption in communication networks
    • Y02D30/70Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention relates to the field of discovery signal measurement, and in particular, to a method, a base station and a terminal for detecting signal measurement in a small cell system.
  • the Small Cell technology uses low-power wireless access nodes to extend the coverage of the Macro Cell, divert the growing data traffic of the macro cell, and improve the efficiency of the use of wireless spectrum resources.
  • the LTE-Advanced system uses this technology to increase network capacity.
  • Small cells are usually small and cover between 10 and 2 km.
  • the Small Cell deployment scenario of the LTE network may be composed of two levels: a macro cell and a small cell.
  • the macro cell and the small cell may be deployed at the same frequency point, that is, the common channel deployment; or may be deployed at different frequency points, that is, the non-co-channel deployment; optionally, the macro cell may not be deployed, and only the small cell may be deployed.
  • Small cells can be deployed in indoor environments or in outdoor environments. It can be sparsely deployed or densely deployed.
  • Small Cell is an interference-limited system, and there is a complex interference relationship between the macro cell and the micro cell, and between the micro cell and the micro cell. Each cell is dynamically scheduled to be a terminal service in the cell.
  • a certain interference coordination method must be used for Small Cell interference suppression and coordination. For example, a small cell adaptive switching mechanism and an adaptive power adjustment mechanism.
  • the basic idea of the small cell adaptive switching mechanism is to adaptively turn on and off some small cells with low load to reduce inter-cell interference.
  • the opened cell is called an active cell, and the closed cell is called a dormant cell.
  • the active cell normally transmits the data channel and the common channel; the dormant cell closes the data channel and part of the common channel.
  • both the active cell and the dormant cell can send a cell discovery signal (DS, Discovery Signal) for cell discovery and selection, activation/deactivation determination, and the like.
  • DS Cell discovery signal
  • the traditional PSS/SSS/CRS Primary/Secondary Synchronization Signal, Cell-specific reference signals
  • the modified PSS/SSS/CRS is used. Signal
  • the UE detects the DS of the active cell and the dormant cell to discover and select the cell. For a dormant cell, if a UE detects a discovery signal of the cell, indicating that there is a UE under the coverage of the cell, the cell may consider activation to serve these UEs.
  • the UE For the activated cell, if the UE detects the DS signal of a certain cell, if the DS signal of the cell is stronger than the DS signal of the current serving cell, it may consider switching to the cell; or although the DS signal of the cell is larger than that of the current serving cell The DS signal is quite or weak, but for load balancing considerations, switching to the cell may also be considered if necessary. Therefore, DS measurements are very important for the discovery selection of a small cell system, activation of the deactivation operation.
  • the DS measurement method can be whether there is detection, that is, 0/1 detection, how many times is detected as a measurement value in a certain time interval; or it can be quantitative detection, that is, RSRP (Reference Signal Receiving Power) detection / RSRQ (Reference) Signal Receiving Quality) Detection/SINR (Signal to Interference plus Noise Ratio) detection, using DS signal strength or signal quality as a measurement.
  • RSRP Reference Signal Receiving Power
  • RSRQ Reference Signal Receiving Quality
  • Detection/SINR Signal to Interference plus Noise Ratio
  • the UE needs to perform inter-frequency detection on the DS of the inter-frequency cell.
  • the measurement time of the inter-frequency detection Measure Gap
  • the UE needs to switch to a measurement frequency different from its own working frequency, and it is necessary to suspend the transmission of data. From the perspective of spectrum efficiency, the measurement time should be as short as possible.
  • DS measurements are still under discussion, and the related technologies do not give different measurement patterns for these different measurement needs. Therefore, it is necessary to study a method for discovering signal measurement patterns. Summary of the invention
  • the technical problem to be solved by the embodiments of the present invention is to provide a method for discovering signal measurement, a base station, and a terminal, so as to solve the technical problem that the configuration scheme of the measurement pattern of the related discovery signal is not clear.
  • An embodiment of the present invention provides a method for measuring a discovery signal, where the method includes:
  • the base station Determining, by the base station, a measurement pattern for measuring the discovery signal for different terminals according to a transmission pattern of the discovery signal of one or more cells;
  • the base station configures a measurement pattern corresponding to the terminal for different terminals; and the base station sends the discovery signal in a cell corresponding to the transmission pattern, and the terminal measures the discovery signal according to the configured measurement pattern.
  • the method further includes:
  • the base station determines the sending pattern by any of the following methods:
  • the base station determines autonomously; or,
  • the node base station is determined in coordination with other base stations than the central node base station.
  • the sending pattern indicates that the sending mode of the discovery signal includes:
  • a predetermined number of bursts are transmitted in one cycle, and a predetermined number of subframes carrying the discovery signal are transmitted in each burst, and the interval between adjacent bursts is a predetermined value.
  • the sending patterns of different cells meet at least one of the following situations:
  • the transmission pattern corresponding to the activated cell is the same as the transmission pattern of the corresponding dormant cell, and both indicate that the discovery signal is sent at intervals;
  • the sending pattern of the corresponding activated cell indicates that the discovery signal is continuously transmitted, and the sending pattern of the corresponding sleeping cell indicates that the discovery signal is sent at intervals;
  • the transmission pattern corresponding to the activated cell is different from the transmission pattern of the corresponding dormant cell, and both indicate that the discovery signal is sent at intervals;
  • the corresponding transmission pattern of different cells indicates that the starting position offset of starting to transmit the discovery signal is different.
  • the sending pattern is different in that the sending pattern has at least one of the following information: a period in which the discovery signal is sent in the corresponding cell; The number of bursts sent in each cycle;
  • Frequency resources and/or sequence resources occupied Frequency resources and/or sequence resources occupied.
  • the step of determining, by the base station, the measurement pattern for measuring the discovery signal for different terminals according to the transmission pattern of the discovery signal of the one or more cells includes: determining, by the base station, the measurement pattern of the terminal according to the measurement requirement
  • the measurement requirements include qualitative measurement requirements and/or quantitative measurement requirements.
  • the measurement pattern of the terminal includes a measurement pattern for measuring a discovery signal of one or more cells, where the measurement pattern of the discovery signal used by the terminal to measure a cell is used by the base station to send the cell.
  • the complete set or subset of the transmitted pattern of the discovery signal is used by the base station to send the cell.
  • the embodiment of the invention further provides a method for measuring a discovery signal, the method comprising:
  • the terminal measures the discovery signal based on the measurement pattern.
  • the measurement pattern of the terminal includes information for measuring a discovery signal of all cells corresponding to the base station.
  • the measurement patterns of different terminals meet at least one of the following situations:
  • the measurement patterns of different terminals are different, and the bursts or sub-frames measured in one cycle are staggered from each other;
  • the bursts or sub-frames measured by the measurement patterns of different terminals in one cycle are staggered.
  • the measurement pattern includes information for indicating the following:
  • the number of bursts measured per cycle The number of subframes carrying the discovery signal measured in each burst; And the number of cycles that need to be measured to report the measurement results.
  • An embodiment of the present invention provides a base station, where the base station includes: a measurement pattern determining module, a measurement pattern configuration module, and a discovery signal sending module, where
  • the measurement pattern determining module is configured to: determine, according to a transmission pattern of the discovery signal of one or more cells, measurement patterns of different terminals for measuring the discovery signal for different terminals;
  • the measurement pattern configuration module is configured to: configure a measurement pattern corresponding to the terminal for different terminals;
  • the discovery signal sending module is configured to: send a discovery signal to a cell corresponding to the transmission pattern.
  • the base station is further configured to determine a transmission pattern by using any one of the following manners: determining, by the base station, autonomously; or
  • the node base station is determined in coordination with other base stations than the central node base station.
  • the sending pattern indicates that the sending mode of the discovery signal includes:
  • a predetermined number of bursts are transmitted in one cycle, and a predetermined number of subframes carrying the discovery signal are transmitted in each burst, and the interval between adjacent bursts is a predetermined value.
  • the sending patterns of different cells meet at least one of the following situations:
  • the transmission pattern corresponding to the activated cell is the same as the transmission pattern of the corresponding dormant cell, and both indicate that the discovery signal is sent at intervals;
  • the sending pattern of the corresponding activated cell indicates that the discovery signal is continuously transmitted, and the sending pattern of the corresponding sleeping cell indicates that the discovery signal is sent at intervals;
  • the transmission pattern corresponding to the activated cell is different from the transmission pattern of the corresponding dormant cell, and both indicate that the discovery signal is sent at intervals;
  • the corresponding transmission pattern of different cells indicates that the starting position of the start of the discovery signal is not offset. Same.
  • the sending pattern is different in that the sending pattern has at least one of the following information: a period in which the discovery signal is sent in the corresponding cell;
  • Frequency resources and/or sequence resources occupied Frequency resources and/or sequence resources occupied.
  • the base station is configured to determine, according to a transmission pattern of the discovery signal of one or more cells, a measurement pattern for measuring a discovery signal for different terminals: determining a measurement pattern of the terminal according to a measurement requirement, where Measurement requirements include qualitative measurement requirements and/or quantitative measurement requirements.
  • the measurement pattern of the terminal includes a measurement pattern for measuring a discovery signal of one or more cells, where the measurement pattern of the discovery signal used by the terminal to measure a cell is used by the base station to send the cell.
  • the complete set or subset of the transmitted pattern of the discovery signal is used by the base station to send the cell.
  • the embodiment of the present invention further provides a terminal, where the terminal includes: a configuration receiving module and a discovery signal measurement module, where
  • the configuration receiving module is configured to: receive, by the base station, a measurement pattern configuration for measuring a discovery signal, where the measurement pattern is determined by the base station according to a transmission pattern of a discovery signal of one or more cells;
  • the discovery signal measurement module is configured to: discover signals measured based on the measurement pattern.
  • the measurement pattern of the terminal includes information for measuring a discovery signal of all cells corresponding to the base station.
  • the measurement patterns of different terminals meet at least one of the following situations:
  • the measurement patterns of different terminals are different, and the bursts or subframes measured in one cycle are staggered from each other;
  • the bursts or sub-frames measured by the measurement patterns of different terminals in one cycle are staggered from each other.
  • the measurement pattern includes information for indicating the following:
  • the number of bursts measured per cycle The number of subframes carrying the discovery signal measured in each burst; and the number of cycles that need to be measured to report the measurement results.
  • the discovery signal measurement method, the base station, and the terminal of the embodiment of the present invention provide a measurement pattern for measuring the discovery signal according to the transmission pattern of the discovery signal, and provide a clear implementation for the terminal to configure the measurement pattern.
  • the solution facilitates the terminal to measure the discovery signal sent by each base station to meet the measurement requirements of the terminal.
  • Embodiment 1 is a schematic diagram of Embodiment 1 of a method for measuring a discovery signal according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of a transmission pattern of a continuous transmission scheme, in which a discovery signal is transmitted at a fixed period T;
  • FIG. 3 is a schematic diagram of transmitting a discovery signal according to a fixed period T, and transmitting a burst of M bursts in each period T;
  • FIG. 4 is a schematic diagram of transmission patterns of different discovery signals corresponding to different cells
  • FIG. 5 is a schematic diagram of each cell transmitting a discovery signal at the same location
  • FIG. 6 is a schematic diagram of each cell transmitting a discovery signal with different position offsets
  • Figure 7 is a schematic diagram of the same measurement pattern used by different UEs.
  • Figure 8 is a schematic diagram of different UEs using different measurement patterns
  • Figure 9 is a schematic diagram of the configuration of the discovery signal measurement pattern
  • FIG. 10 is a schematic diagram of Embodiment 2 of a method for measuring a discovery signal according to an embodiment of the present invention
  • FIG. 11 is a schematic structural diagram of a module of a base station according to an embodiment of the present invention.
  • FIG. 12 is a schematic structural diagram of a module of a terminal according to an embodiment of the present invention.
  • the discovery signal measurement method of the embodiment of the present invention mainly relates to a base station and a terminal.
  • embodiments of the present invention are described from two different perspectives of a base station and a terminal:
  • An embodiment of the discovery signal measurement method in the embodiment of the present invention includes:
  • Step 101 The base station determines, according to the transmission pattern of the one or more discovery signals, a measurement pattern for measuring the discovery signal for different terminals;
  • the embodiment of the present invention is also described as a cell receiving or transmitting a picture, but it should be understood that the true meaning of the cell herein is the base station corresponding to the cell.
  • the base station in the embodiment of the present invention includes various base stations such as a macro base station and a home base station.
  • the number of cells corresponding to one base station is different, which is not limited in this embodiment of the present invention.
  • the discovery signal is differentiated by cell, that is, the discovery signal transmission pattern of multiple cells under the same base station can also be configured to be different.
  • the transmission pattern is determined by any of the following methods:
  • the base station determines autonomously; or,
  • the manner of signaling configuration includes the following two types:
  • the sending pattern indicates that the sending mode of the discovery signal is:
  • Transmission mode 1 The discovery signal is continuously transmitted according to a predetermined transmission period; or;
  • Transmission mode 2 A predetermined number of bursts are transmitted in one cycle, and a predetermined number of subframes carrying the discovery signal are transmitted in each burst, and the interval between adjacent bursts is a predetermined value.
  • the cell will send a discovery signal every cycle T, that is, at 0, T, 2T, ..., ⁇ , ( ⁇ +1) ⁇ , ( ⁇ +2) ⁇ , ... , 2 ⁇ , (2 ⁇ +1) ⁇ , (2 ⁇ +2) ⁇ , ... sends a discovery signal at all times.
  • T can be an integer multiple of the traditional PSS/SSS/CRS signal transmission period TO.
  • the PSS transmission period is 5 ms
  • the transmission period of the DS is equal to TO. It is an integer multiple of TO, for example, it can take 5ms, 10ms, 20ms, etc.
  • the value of T is more flexible, such as 2ms, 5ms, 10ms, 50ms, 100ms, etc.
  • the transmission mode 2 means that the discovery signal is sent according to the period N*T, and L bursts are transmitted in each period, and each burst includes M subframes carrying the discovery signal, and the interval between adjacent bursts is
  • the transmission pattern corresponding to the activated cell is the same as the transmission pattern of the corresponding dormant cell, and both indicate that the discovery signal is sent at intervals;
  • the sending pattern of the corresponding activated cell indicates that the discovery signal is continuously transmitted, and the sending pattern of the corresponding sleeping cell indicates that the discovery signal is sent at intervals;
  • the transmission pattern corresponding to the activated cell is different from the transmission pattern of the corresponding dormant cell, and both indicate that the discovery signal is sent at intervals;
  • the corresponding transmission pattern of different cells indicates that the starting position offset of starting to transmit the discovery signal is different.
  • the transmission pattern of different cells meets at least one of the following situations:
  • the difference in the transmission pattern means that the transmission pattern has at least one of the following information: a period in which the discovery signal is transmitted in the corresponding cell; The number of bursts sent in each cycle;
  • Frequency resources and/or sequence resources occupied Frequency resources and/or sequence resources occupied.
  • the occupied frequency resource refers to the case where the CRS or other bandwidth-variable discovery signal is used for the discovery signal.
  • the different cells can be configured to transmit the discovery signal in the frequency domain to occupy different frequency resources. For example, some cells send a long CRS sequence.
  • the occupied frequency resources (bandwidth) are more. Some cell CRSs occupy less frequency resources (bandwidth).
  • the sequence resources also change accordingly, so it also needs to be indicated together.
  • the base station determines a measurement pattern of the terminal based on a measurement requirement, the measurement requirement including a qualitative measurement requirement and/or a quantitative measurement requirement.
  • Step 102 The base station configures a measurement pattern corresponding to the terminal for different terminals.
  • the measurement pattern of the terminal includes a measurement pattern for measuring a discovery signal of one or more cells, where the terminal is used to measure the discovery of a cell.
  • the measurement pattern of the signal is a complete set or subset of the transmission pattern used by the base station to transmit the discovery signal for the cell.
  • the measurement pattern of the terminal includes information for measuring discovery signals of all cells corresponding to the base station, so as to ensure that each cell has a discovery signal falling within the terminal measurement pattern gap (Gap), so that the UE can discover each cell, so as to avoid Missing the community.
  • Gap terminal measurement pattern gap
  • each cell After each cell determines the discovery signal transmission pattern, it starts to send the discovery signal according to the pattern, and the UE can measure the discovery signal of each cell.
  • the base station can be configured differently according to different measurement requirements of the UE.
  • the measurement requirements include qualitative measurement requirements and/or quantitative measurement requirements.
  • the DS measurement pattern measured by the UE for a certain cell should be a complete set or subset of the DS transmission pattern of the cell.
  • the DS measurement pattern can be UE-specific, ie each UE can be configured with a different measurement pattern.
  • each UE can be configured to use the same measurement pattern for measurement. Since the UE does not need to suspend data transmission during the same-frequency measurement, the spectrum efficiency is not affected. For the inter-frequency measurement UE, it is required for measurement. When data transmission is suspended, the measurement patterns should be shifted from each other as much as possible to avoid the spectral efficiency degradation caused by a large number of UEs simultaneously stopping transmission.
  • different UEs can be configured to use the same measurement pattern for measurements.
  • the measurement patterns of each UE are staggered as much as possible to avoid UEs stopping transmission at the same time during the measurement interval.
  • the number of bursts measured in each period (L1 is an arbitrary integer less than or equal to L) can be configured, and the number of subframes carrying the discovery signal measured in each burst (Ml is an integer less than or equal to M) ), the measurement frame number is started, and the measurement result is reported after measuring S cycles.
  • the UE has different measurement requirements for DS detection and intensity detection.
  • the number of samples required for detection is small, while the intensity detection requires more samples and longer filtering time.
  • the discovery signal transmission pattern of the cell to be measured is configured as a minimum transmission interval T, a transmission period N (the actual period is ⁇ * ⁇ ), the number of bursts L transmitted in each period, and the sub-band carrying the discovery signal in each burst.
  • the number of bursts measured in each period (L1 is an arbitrary integer less than or equal to L) can be configured, and the number of subframes carrying the discovery signal measured in each burst (Ml is an integer less than or equal to M) ), the measurement result is reported after measuring S cycles.
  • each UE may be configured to measure different bursts or subframes in one cycle to achieve the purpose that each UE measurement pattern is staggered from each other.
  • the measurement patterns of different terminals meet at least one of the following situations:
  • the measurement patterns of different terminals are the same; When measuring at the same frequency, the measurement patterns of different terminals are different, and the bursts or subframes measured in one cycle are staggered from each other;
  • the bursts or sub-frames measured by the measurement patterns of different terminals in one cycle are staggered.
  • the measurement pattern includes information indicating the following:
  • the number of bursts measured per cycle The number of subframes carrying the discovery signal measured in each burst; the number of cycles required to report the measurement results.
  • Step 103 The base station sends a discovery signal to a cell corresponding to the transmission pattern, and the terminal measures the discovery signal according to the configured measurement pattern.
  • step 102 and step 103 are not strictly sequential.
  • different cells may be configured to use different DS transmission patterns to adapt to different power constraints of each cell, while avoiding interference existing between cells and satisfying different measurement requirements of the UE.
  • the UE is configured to use the UE-specific measurement pattern, so that the measured GAPs of the UEs are staggered from each other. Compared with the related technologies, all UEs are prevented from simultaneously stopping transmission, thereby improving spectrum efficiency.
  • the same transmission pattern can be used for the active cell and the dormant cell.
  • Each cell may also select different transmission patterns according to the situation of the cell. For example, the activation power consumption restriction of the cell is relatively loose, and the active cell may be configured to send a complete signal set, for example, using a transmission pattern that is continuously transmitted;
  • the dormant cell is configured to transmit a subset of the active cell DS, for example, using a transmission pattern transmitted at intervals.
  • Both the active cell and the dormant cell are configured to use the transmission pattern of the continuous transmission discovery signal.
  • the parameters to be configured are:
  • both the active cell and the dormant cell are at 0, T, 2T, ..., ⁇ , ( ⁇ +1) ⁇ , ( ⁇ +2) ⁇ , ..., 2 ⁇ , (2 ⁇ +1) ⁇ , (2 ⁇ +2) ⁇ ,..., etc.
  • the discovery signal is sent at any time.
  • the advantage of finding a signal transmission pattern is that configuration and transmission are simple, and only traditional multiplexing is required for direct multiplexing.
  • Application example 2
  • the configuration side parameters are: minimum transmission interval T, transmission period N (the actual period is ⁇ * ⁇ ), and the number of bursts sent per period L, each The number of subframes M carrying the discovery signal in the burst, and the interval P between adjacent bursts (the actual interval is P*T).
  • the transmission patterns of the discovery signals of the active cell and the dormant cell are:
  • the first burst starts at time 0: the discovery signal is sent at 0, ⁇ , 2 ⁇ , ..., ;; the second burst starts at ( ⁇ + ⁇ ) ⁇ : at ( ⁇ + ⁇ ) ⁇ , ( ⁇ + ⁇ ) ⁇ + ⁇ , ( ⁇ + ⁇ ) ⁇ +2 ⁇ ,..., ( ⁇ + ⁇ ) ⁇ + ⁇ Send the discovery signal at any time;
  • the Lth burst starts at (L-1)(M+P)T: at (L-1)(M+P)T, (L-1)(M+P)T+T,
  • the first burst starts at time NT: the discovery signal is sent at NT, NT+T, NT+2T, ..., NT+MT;
  • the second burst starts at NT+(M+P)T: at NT+(M+P)T, NT+(M+P)T+T,
  • the Lth burst starts from NT+(L-1)(M+P)T: at NT+(L-1)(M+P)T, NT+(L-1)(M+P)T+T, NT+(L-1)(M+P)T+2T, ..., NT+(L-1)(M+P)T+MT time to send a discovery signal;
  • the first burst starts from the NT time: the discovery signal is transmitted at (kl)NT, (kl)NT+T, (kl)NT+2T,..., (kl)NT+MT;
  • the second burst starts at (kl)NT+(M+P)T: at (kl)NT+(M+P)T, (kl)NT+(M+P)T+T, (kl)NT+(M +P)T+2T,..., (kl)NT+(M+P)T+MT time to send the discovery signal;
  • the Lth burst starts from (kl)NT+(Ll)(M+P)T: at (kl)NT+(Ll)(M+P)T, (k-1)NT+(L-1)(M +P)T+T, (k-1)NT+(L-1)(M+P)T+2T, ... ,
  • the advantage of the signal transmission pattern is that the configuration is flexible, and the transmission period N*T, the number of transmission bursts L in the period, and the transmission within the burst can be adjusted according to the requirements of the cell discovery and the transmission power limitation.
  • Subframe M is the transmission period N*T, the number of transmission bursts L in the period, and the transmission within the burst.
  • the active cell is configured to use a transmission pattern that continuously transmits a discovery signal.
  • the parameters that need to be configured are: Send cycle 1 ⁇
  • the configuration side parameters need to be: minimum transmission interval T, transmission period N (actual period is ⁇ * ⁇ ), number of bursts sent per period L, in each burst The number of subframes M carrying the discovery signal, and the interval P between adjacent bursts (the actual interval is P*T).
  • the discovery signal pattern of the activated cell is activated, as shown in FIG. 2, at 0, ⁇ , 2 ⁇ , ..., ⁇ , ( ⁇ +1) ⁇ , ( ⁇ +2) ⁇ , ..., 2 ⁇ , (2 ⁇ +1) ⁇ , (2 ⁇ +2) ⁇ ,...etc.
  • the discovery signal pattern of the dormant cell is the same as that of the application example 2, as shown in FIG. 3, and details are not described herein again.
  • the advantage of the signal transmission pattern is that the configuration is flexible, the active cell power limitation is loose, and more discovery signals can be sent for the UE to discover and select the activated cell to serve itself; and the power limitation of the dormant cell is strict.
  • the transmission period ⁇ * ⁇ , the number of transmission bursts L in the period, and the transmission subframe M in the burst can be flexibly adjusted according to the requirements of the cell discovery.
  • Different dormant cells may also be configured to use different discovery signal patterns, such as transmitting different bursts per cycle, or transmitting different numbers of frames carrying discovery signals within each burst. As shown in Figure 4;
  • Configure Sleep Cell 1 Use the discovery signal pattern sent at intervals.
  • the parameters to be configured are: minimum transmission interval T, transmission period N (the actual period is ⁇ * ⁇ ), the number of bursts L1 sent in each period, and the number of subframes carrying the discovery signal in each burst, Ml, adjacent
  • the interval P between bursts (the actual interval is P*T).
  • the parameters to be configured are: minimum transmission interval ⁇ , transmission period ⁇ (the actual period is ⁇ * ⁇ ), and the number of bursts sent in each period is L2, in each burst.
  • each cell may start to send a discovery signal at the same starting position for subsequent processing, as shown in FIG. 5 (for example, sending a burst interval transmission scheme in one cycle), each cell is in :
  • the discovery signal is sent at 0, ⁇ , 2 ⁇ , ..., ⁇ ;
  • the discovery signal is transmitted at ⁇ , ⁇ + ⁇ , ⁇ +2 ⁇ , ..., ⁇ + ⁇ ; in the kth period, at (kl)NT, (kl)NT+T, (kl ) NT + 2T, ..., NT + MT time to send the discovery signal;
  • This application example finds that the signal transmission pattern is applicable to the same-frequency cell, which is beneficial for the UE to measure these cells at the same location, and the operation is simple.
  • each cell can be configured to transmit a discovery signal with a different starting location offset to avoid interference. As shown in Figure 6 (send a burst interval transmission scheme in one cycle as an example).
  • cell 1 is at:
  • the discovery signal is transmitted at 0, T, 2T, ..., MT;
  • the discovery signal is sent at NT, NT+T, NT+2T, ..., ⁇ + ⁇ ; in the kth period, at (kl)NT, (kl)NT+T, (kl ) NT+2T,..., NT+MT sends a discovery signal at a time; cell 2 is at:
  • the discovery signal is transmitted at time T, 2T, 3T, ..., (M+1)T;
  • the discovery signal is transmitted at NT+T, NT+2T, NT+3T, .-, NT+(M+1)T;
  • a discovery signal is transmitted at (k-1)NT+T, (k-1)NT+2T, (k-1)NT+3T, ..., NT+(M+ 1)T; cell 3
  • a discovery signal is transmitted at (k-1)NT+T, (k-1)NT+2T, (k-1)NT+3T, ..., NT+(M+ 1)T; cell 3
  • the discovery signal is sent at all times;
  • the discovery signal is transmitted at ⁇ +2 ⁇ , ⁇ +3 ⁇ , ⁇ +4 ⁇ , ..., ⁇ +( ⁇ +2) ⁇ ;
  • the discovery signal is transmitted at (k-l)NT+2T, (k-l)NT+3T, (k-l)NT+4T, ..., NT+(M+2)T;
  • This application example finds that the signal transmission pattern is applicable to the inter-frequency cell, which facilitates the UE to measure these cells at different locations, and avoids stopping transmission at the same time.
  • UE1 and UE12 are in the cell 1.
  • UE13 there are UE21, UE22, UE23 under cell 2, and UE31, UE32, and UE33 under cell 3.
  • Cell 2 and cell 1 are in the same frequency, and cell 3 and cell 1 are different frequencies.
  • Application example 6
  • cell 1 For example, sending a burst interval transmission scheme in one cycle, cell 1 is at:
  • the discovery signal is sent at 0, T, 2T, ..., MT;
  • the discovery signal is transmitted at times of NT, NT+T, NT+2T, ..., ⁇ + ⁇ ; in the kth period, at (kl)NT, (kl)NT+T,( Kl) NT+2T, ..., NT+MT, etc. send the discovery signal at any time;
  • Configurable UE11, UE12, UE13, UE21, UE22, UE23 use the same measurement pattern to measure cell 1:
  • the discovery signal is measured at time 0;
  • the discovery signal is measured at time NT;
  • the discovery signal is measured at time (k-1)NT.
  • different UEs can use different measurement patterns for measurement, configurable
  • the UE uses measurement patterns that are staggered from each other to avoid that each UE stops transmitting at the same time in the measurement interval, as shown in FIG.
  • cell 1 For example, sending a burst interval transmission scheme in one cycle, cell 1 is at:
  • the discovery signal is sent at 0, T, 2T, ..., MT;
  • the discovery signal is transmitted at times of NT, NT+T, NT+2T, ..., ⁇ + ⁇ ; in the kth period, at (kl)NT, (kl)NT+T,( Kl) NT+2T, ..., NT+MT, etc. send the discovery signal at any time;
  • the three UEs in the cell 3, the UE 31, the UE 32, the UE 33, and the DS of the measurement cell 1 are all inter-frequency measurements, and each UE can be configured to measure different bursts or subframes in one cycle to achieve mutual UE measurement patterns. Staggered purpose.
  • the UE 31 measures the discovery signal at time 0 in the first cycle
  • the discovery signal is measured at time NT;
  • the discovery signal is measured at (k-l)NT time
  • UE32 is at:
  • the discovery signal is measured at time T;
  • the discovery signal is measured at the time of NT+T;
  • the discovery signal is measured at (k-l)NT+T;
  • UE33 is at:
  • the discovery signal is measured at 2T;
  • the discovery signal is measured at the time of NT+2T;
  • the discovery signal is measured at (k-l)NT+2T;
  • the measurement pattern configuration method is advantageous for each UE to stagger the measurement pattern, thereby avoiding Each UE simultaneously stops transmitting and reduces the spectrum efficiency caused by the measurement, which can improve the network spectrum efficiency.
  • the UE has different measurement requirements for DS detection and intensity detection.
  • the number of samples required for detection is small, while the intensity detection requires more samples and longer filtering time.
  • the discovery signal transmission pattern of the cell 1 is configured as a minimum transmission interval T, a transmission period N (the actual period is ⁇ * ⁇ ), the number of bursts L transmitted in each period, the number of subframes M in each burst, and adjacent bursts
  • the interval P between the transmissions (the actual interval is P*T).
  • the number of bursts LI measured in each period (L1 is an arbitrary integer less than or equal to L) can be configured, and the number of subframes M1 measured in each burst (M1 is an arbitrary integer less than or equal to M), After measuring S cycles, the last measurement result can be configured.
  • a threshold can be configured. Only when the measured strength or signal strength of the signal exceeds the configured threshold, the measurement is performed. As shown in Figure 9, the UE will be at:
  • the first burst the discovery signal is measured at 0, ⁇ , 2 ⁇ , ..., ⁇ 1 ⁇ ;
  • the second burst measuring the signal at ( ⁇ + ⁇ ) ⁇ , ( ⁇ + ⁇ ) ⁇ + ⁇ , ( ⁇ + ⁇ ) ⁇ +2 ⁇ ,..., ( ⁇ + ⁇ ) ⁇ + ⁇ 1 ⁇ ;
  • L1 burst at (L1-1)(M+P)T, (L1-1)(M+P)T+T, (L1-1)(M+P)T+2T, ... , (L1-1) (M + P) T + M1T moment measurement signal;
  • the first burst The discovery signal is measured at NT, NT+T, NT+2T, ..., NT+M1T; the second burst: at NT+(M+P)T, NT+(M+P) T+T, NT+(M+P)T+2T, ..., ⁇ +( ⁇ + ⁇ ) ⁇ + ⁇ 1 ⁇ measure the discovery signal;
  • L1 burst at NT+(L1-1)(M+P)T, NT+(L1-1)(M+P)T+T, NT+(L1-1)(M+P)T+2T, ... , NT+(L1-1)(M+P)T+M1T measures the discovery signal at the moment; in the kth period, (kl)NT ⁇ kNT:
  • the first burst at (kl)NT, (kl)NT+T, (kl)NT+2T,..., (kl)NT+MlT Measuring the discovery signal;
  • the second burst at (kl)NT+(M+P)T, (kl)NT+(M+P)T+T, (kl)NT+(M+P)T+2T,..., (kl ) NT+(M+P)T+MlT measures the discovery signal at the moment;
  • L1 burst at (kl)NT+(Ll-l)(M+P)T, (k-1)NT+(L 1 - 1 )(M+P)T+T, (kl)NT+(Ll -l)(M+P)T+2T,... , (k-1)NT+(L 1 - 1 )(M+P)T+M1 T measure the discovery signal at the moment;
  • the UE may give a DS measurement result at (S-l)NT time after S measurement periods.
  • UE 21 performs detection on cell 1 to measure 1 burst in each period, and each burst measures 2 subframes as an example.
  • UE21 will be in:
  • the discovery signal is measured at ⁇ , ⁇ ;
  • the discovery signal is measured at ⁇ , ⁇ + ⁇ ;
  • the discovery signal is measured at (k-l)NT, (k-l)NT+T;
  • the UE can output the measurement result with or without detection for each measurement period NT.
  • the UE 22 performs quantitative detection on the cell 1, and measures 2 bursts per period, and each burst measures 4 subframes as an example, and the UE 22 will be at:
  • the first burst the discovery signal is measured at 0, ⁇ , 2 ⁇ , 3 ;
  • the second burst at ( ⁇ + ⁇ ) ⁇ , ( ⁇ + ⁇ ) ⁇ + ⁇ , ( ⁇ + ⁇ ) ⁇ +2 ⁇ , ( ⁇ + ⁇ ) ⁇ +3 ⁇ , the measurement signal is measured at the moment;
  • the first burst measuring the discovery signal at ⁇ , ⁇ + ⁇ , ⁇ +2 ⁇ , ⁇ +3 ⁇ ;
  • the second burst ⁇ +( ⁇ + ⁇ ) ⁇ , ⁇ +( ⁇ + ⁇ ) ⁇ + ⁇ , ⁇ +( ⁇ + ⁇ ) ⁇ +2 ⁇ ,
  • the first burst the discovery signal is measured at (k-l)NT, (k-l)NT+T, (k-l)NT+2T, (k-l)NT+3T;
  • the second burst at (kl)NT+(M+P)T, (kl)NT+(M+P)T+T, (k-1)NT+(M+P)T+2T,(k-1
  • the signal is found at the time of NT+(M+P)T+3 T.
  • the method for measuring a discovery signal includes:
  • Step 1001 The terminal receives a measurement pattern configuration for measuring a discovery signal sent by a base station, where the measurement pattern is determined by the base station according to a transmission pattern of a discovery signal of one or more cells; optionally, the measurement of the terminal The pattern includes information for measuring discovery signals for all cells corresponding to the base station.
  • the measurement patterns of different terminals meet at least one of the following situations:
  • the measurement patterns of different terminals are different, and the bursts or sub-frames measured in one cycle are staggered from each other;
  • the bursts or sub-frames measured by the measurement patterns of different terminals in one cycle are staggered.
  • the measurement patterns of different terminals are the same; when measuring at different frequencies, the measurement patterns of different terminals are different.
  • the measurement pattern includes information indicating the following:
  • the number of bursts measured per cycle The number of subframes measured in each burst; the number of cycles required to report the measurement results.
  • Step 1002 The terminal measures a discovery signal based on the measurement pattern.
  • the embodiment of the present invention further provides a base station.
  • the base station includes: a measurement pattern determining module 1101, a measurement pattern configuration module 1102, and a discovery signal sending module 1103, where The measurement pattern determining module 1101 is configured to: determine a measurement pattern for measuring a discovery signal for different terminals according to a transmission pattern of a discovery signal of one or more cells;
  • the measurement pattern configuration module 1102 is configured to: configure a measurement pattern corresponding to the terminal for different terminals;
  • the discovery signal sending module 1103 is configured to: send a discovery signal in a cell corresponding to the transmission pattern.
  • the base station determines the sending pattern by using any one of the following manners:
  • the sending pattern indicates that the sending mode of the discovery signal is:
  • a predetermined number of bursts are transmitted in one cycle, and a predetermined number of subframes are transmitted in each burst, and the interval between adjacent bursts is a predetermined value.
  • the sending patterns of different cells meet at least one of the following situations:
  • the transmission pattern corresponding to the activated cell is the same as the transmission pattern of the corresponding dormant cell, and both indicate that the discovery signal is sent at intervals;
  • the sending pattern of the corresponding activated cell indicates that the discovery signal is continuously transmitted, and the sending pattern of the corresponding sleeping cell indicates that the discovery signal is sent at intervals;
  • the transmission pattern corresponding to the activated cell is different from the transmission pattern of the corresponding dormant cell, and both indicate that the discovery signal is sent at intervals;
  • the corresponding transmission pattern of different cells indicates that the starting position offset of starting to transmit the discovery signal is different.
  • the sending pattern is different in that the sending pattern has at least one of the following information: a period in which the discovery signal is sent in the corresponding cell; The number of bursts sent in each cycle;
  • the base station determines a measurement pattern of the terminal based on a measurement requirement, where the measurement requirement includes a qualitative measurement requirement and/or a quantitative measurement requirement.
  • the measurement pattern of the terminal includes a measurement pattern for measuring a discovery signal of one or more cells, and the measurement pattern of the discovery signal used by the terminal to measure a cell is used by the base station to send the cell. Discover the full set or subset of the transmitted pattern of the signal.
  • the embodiment of the present invention further provides a terminal embodiment, as shown in FIG. 12, in which the terminal includes: a configuration receiving module 1201 and a discovery signal measuring module 1202, where
  • the configuration receiving module 1201 is configured to: receive a measurement pattern configuration sent by the base station for measuring a discovery signal, where the measurement pattern is determined by the base station according to a transmission pattern of a discovery signal of one or more cells;
  • the discovery signal measurement module 1202 is configured to: a discovery signal measured based on the measurement pattern.
  • the measurement pattern of the terminal includes information for measuring a discovery signal of all cells corresponding to the base station.
  • the measurement patterns of different terminals meet at least one of the following situations:
  • the measurement patterns of different terminals are different, and the bursts or sub-frames measured in one cycle are staggered from each other;
  • the bursts or sub-frames measured by the measurement patterns of different terminals in one cycle are staggered from each other.
  • the measurement patterns of different terminals are the same; when measuring at different frequencies, the measurement patterns of different terminals are different.
  • the measurement pattern includes information for indicating the following:
  • the number of bursts measured per cycle The number of subframes measured in each burst; the number of cycles required to report the measurement results.
  • the discovery signal measurement method, the base station, and the terminal of the embodiment of the present invention provide a measurement pattern for measuring the discovery signal according to the transmission pattern of the discovery signal, and provide a clear implementation for the terminal to configure the measurement pattern.
  • the solution is convenient for the terminal to measure the discovery signal sent by each base station to meet the measurement requirements of the terminal.
  • the measurement pattern used by the terminal to measure a discovery signal of a cell is a complete set or a subset of a transmission pattern used by the base station to send a discovery signal of the cell, and can ensure that when the measurement is performed based on the measurement pattern, there must be a corresponding position Discovering signal transmission improves measurement efficiency.
  • the base station can flexibly configure the measurement pattern according to different measurement requirements. On the one hand, it can meet the measurement requirements of different UEs. On the other hand, it can facilitate the reasonable planning of the measurement interval by each UE, and avoid a large number of UEs simultaneously stop transmitting when the inter-frequency measurement is avoided. , improved spectral efficiency.
  • the base station determines the transmission pattern autonomously or is determined centrally by the central node base station or coordinated with other base stations, the flexibility of transmitting the pattern can be ensured, and the interference between the signal transmission patterns of each base station can be avoided.
  • the modules described in the embodiments of the present invention are only an example of dividing according to their functions. It can be understood that one skilled in the art can give one or more kinds of situations in the case that the system/device/device implements the same function. Other functions can be divided into any functional module or unit by using one or more functional modules in a specific application. Please protect the scope.
  • the discovery signal measurement method, the base station, and the terminal of the embodiment of the present invention provide a measurement pattern for measuring a discovery signal according to a transmission pattern of the discovery signal, and provide a clear implementation scheme for the terminal to configure the measurement pattern, which is convenient.
  • the terminal measures the discovery signal sent by each base station to meet the measurement requirements of the terminal. Therefore, it has strong industrial applicability.

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Abstract

一种发现信号测量的方法、基站及终端,该方法包括:基站根据发现信号的发送图样,确定不同终端的用于测量发现信号的测量图样;所述基站为终端配置所述终端对应的测量图样;所述基站根据所述发送图样在所述发送图样对应的小区发送所述发现信号。本发明实施例的方法、基站及终端提供了明确的发现信号的测量图样的配置方案。

Description

发现信号测量的方法、 基站及终端
技术领域
本发明涉及发现信号测量领域, 尤其涉及一种小小区系统中发现信号测 量的方法、 基站及终端。
背景技术
小小区(Small Cell ) 技术釆用低功率的无线接入节点, 可用于扩展宏小 区(Macro Cell )的覆盖范围, 分流宏小区日益增长的数据流量, 提高无线频 谱资源的使用效率。 LTE-Advanced系统釆用了这一技术, 来提高网络容量。
Small Cell通常体积较小,覆盖范围 10米到 2公里之间。 LTE网络的 Small Cell部署场景可由宏小区和小小区两个层面组成。 宏小区和小小区可部署在 相同的频点上, 即共道部署; 也可以部署在不同的频点上, 即非共道部署; 可选地, 还可以不部署宏小区, 仅部署小小区。 小小区可部署在室内环境, 也可以部署在室外环境下。 可以进行稀疏部署, 也可以进行密集部署。
Small Cell是干扰受限系统, 宏小区与微小区之间、 微小区与微小区之间 存在着复杂的干扰关系。 各小区各自动态调度为小区内的终端服务。 此外随 着 UE的移动, 会不停地有 UE移入、 移出小小区, Small Cell系统的负载和 干扰会呈现出明显的波动。 因此必须釆用一定的干扰协调方法来进行 Small Cell干扰抑制和协调。 例如, 小小区自适应开关机制和自适应功率调整机制。
小小区自适应开关机制的基本思想是自适应的打开、 关闭一些负荷过低 的小小区, 以降低小区间干扰。 打开的小区叫做激活小区, 关闭的小区叫做 休眠小区。 激活小区正常发送数据信道和公共信道; 休眠小区则关闭数据信 道以及部分公共信道。 但是, 激活小区和休眠小区都可以发送小区发现信号 ( DS, Discovery Signal ) , 用于小区发现及选择, 激活 /去激活判断等。 发现 信号目前尚在讨论中, 主要有几种观点: 1)沿用传统的 PSS/SSS/CRS、 (Primary/Secondary Synchronization Signal, Cell-specific reference signals)信号; 2)使用修改的 PSS/SSS/CRS信号; 3)使用全新的 DS。 UE会检测激活小区和休眠小区的 DS, 以发现和选择小区。 对于休眠小 区, 如果有 UE检测到该小区的发现信号, 说明该小区的覆盖范围下有 UE 存在, 该小区可以考虑激活以便为这些 UE服务。 对于激活小区, 如果 UE 检测到某个小区的 DS信号, 若该小区的 DS信号比当前服务小区的 DS信号 更强, 可以考虑切换到该小区; 或者虽然该小区的 DS信号比当前服务小区 的 DS信号相当或弱一些, 但出于负载平衡的考虑, 有必要时也可以考虑切 换到该小区去。 因此, DS测量对于小小区系统的发现选择、 激活去激活操作 是非常重要的。 DS测量的方式可以是有无检测, 即 0/1检测, 以在某个时间 区间内检测到多少次作为测量值; 也可以是定量检测, 即 RSRP(Reference Signal Receiving Power)检测/ RSRQ(Reference Signal Receiving Quality)检测 /SINR(Signal to Interference plus Noise Ratio)检测,以 DS信号强度或者信号质 量作为测量量。
进行 DS有无检测和 DS强度检测有着不同的测量需求,有无检测所需要 的样本数较少, 而强度检测需要的样本数较多, 滤波时间更长, 也就是说有 无检测和强度检测需要使用不同的测量图样。 另外, 对于异频部署的 Small Cell场景, UE需要对异频小区的 DS进行异频检测。 在异频检测的测量时间 ( Measurement Gap )内, UE需要切换到与自己的工作频点不同的测量频点 上, 此时需要暂停发送数据。 从频谱效率角度考虑, 应该尽可能的缩短测量 时间。 目前关于 DS 测量还在讨论中, 相关技术并没有针对这不同的测量需 求给出不同的测量图样。 因此, 有必要研究一种发现信号测量图样配置方法。 发明内容
本发明实施例要解决的技术问题是提供一种发现信号测量的方法、 基站 及终端, 以解决相关发现信号的测量图样的配置方案不明确的技术问题。
为解决上述技术问题, 釆用以下技术方案:
本发明实施例提供了一种发现信号测量方法, 该方法包括:
基站根据一个或多个小区的发现信号的发送图样, 为不同的终端确定用 于测量发现信号的测量图样; 所述基站为不同的终端配置所述终端对应的测量图样; 以及 所述基站在所述发送图样对应的小区发送所述发现信号, 终端根据配置 的测量图样测量发现信号。 可选地, 所述基站根据一个或多个小区的发现信号的发送图样, 为不同 的终端确定用于测量发现信号的测量图样的步骤之前, 该方法还包括:
所述基站通过以下任一种方式确定所述发送图样:
所述基站自主确定; 或,
接收中心节点基站或除中心节点基站之外的其他基站发送的配置信令, 根据所述配置信令配置所述发送图样, 所述发送图样是所述中心节点基站集 中确定的, 或所述中心节点基站与除中心节点基站之外的其他基站协调确定 的。
可选地, 所述发送图样表明所述发现信号的发送模式包括:
按照预定发送周期持续发送发现信号; 或;
在一个周期内发送预定个数突发, 每个突发内发送预定个数的携带发现 信号的子帧, 相邻突发之间的间隔为预定值。
可选地, 不同小区的发送图样符合以下至少一种情形:
对应激活小区的发送图样和对应休眠小区的发送图样相同, 且均表明所 述发现信号为间隔发送;
对应激活小区的发送图样表明所述发现信号为持续发送, 对应休眠小区 的发送图样表明所述发现信号为间隔发送;
对应激活小区的发送图样和对应休眠小区的发送图样不同, 且均表明所 述发现信号为间隔发送; 以及
对应的不同小区的发送图样表明开始发送发现信号的起始位置偏移不 同。
可选地,所述发送图样不同指所述发送图样至少存在以下一项信息不同: 在对应小区内发送发现信号的周期; 每个周期中发送的突发数;
每个突发内发送的携带发现信号的子帧数;
相邻突发之间的间隔;
开始发送发现信号的起始位置偏移;以及
占用的频率资源和 /或序列资源。
可选地, 所述基站根据一个或多个小区的发现信号的发送图样, 为不同 的终端确定用于测量发现信号的测量图样的步骤包括: 所述基站基于测量需 求确定所述终端的测量图样, 所述测量需求包括定性测量需求和 /或定量测量 需求。
可选地, 所述终端的测量图样包括用于测量一个或多个小区的发现信号 的测量图样, 所述终端用于测量一个小区的发现信号的测量图样为所述基站 用于发送所述小区的发现信号的发送图样的全集或子集。
本发明实施例还提供了一种发现信号测量方法, 该方法包括:
终端接收基站发送的用于测量发现信号的测量图样配置, 所述测量图样 为所述基站根据一个或多个小区的发现信号的发送图样确定的; 以及
所述终端基于所述测量图样测量发现信号。
可选地, 所述终端的测量图样包括用于测量所述基站对应的所有小区的 发现信号的信息。
可选地, 不同终端的测量图样符合以下至少一种情形:
当同频测量时, 不同终端的测量图样相同;
当异频测量时, 不同终端的测量图样相同;
当同频测量时, 不同终端的测量图样不同, 在一个周期内测量的突发或 子帧相互错开; 以及
当异频测量时, 不同终端的测量图样在一个周期内测量的突发或子帧相 互错开。
可选地, 所述测量图样包括用于表明以下内容的信息:
每个周期测量的突发数目; 每个突发中测量的携带发现信号的子帧数; 以及上报测量结果需要测量的周期数。
本发明实施例提供了一种基站, 该基站包括: 测量图样确定模块、 测量 图样配置模块, 以及发现信号发送模块, 其中,
所述测量图样确定模块设置成: 根据一个或多个小区的发现信号的发送 图样, 为不同的终端确定不同终端的用于测量发现信号的测量图样;
所述测量图样配置模块设置成: 为不同的终端配置所述终端对应的测量 图样; 以及
所述发现信号发送模块设置成: 在所述发送图样对应的小区发送发现信 号。
可选地, 所述基站还设置成通过以下任一种方式确定发送图样: 由所述基站自主确定; 或,
接收中心节点基站或除中心节点基站之外的其他基站发送的配置信令, 根据所述配置信令配置所述发送图样, 所述发送图样是所述中心节点基站集 中确定的, 或所述中心节点基站与除中心节点基站之外的其他基站协调确定 的。
可选地, 所述发送图样表明所述发现信号的发送模式包括:
按照预定发送周期持续发送发现信号; 或;
在一个周期内发送预定个数突发, 每个突发内发送预定个数的携带发现 信号的子帧, 相邻突发之间的间隔为预定值。
可选地, 不同小区的发送图样符合以下至少一种情形:
对应激活小区的发送图样和对应休眠小区的发送图样相同, 且均表明所 述发现信号为间隔发送;
对应激活小区的发送图样表明所述发现信号为持续发送, 对应休眠小区 的发送图样表明所述发现信号为间隔发送;
对应激活小区的发送图样和对应休眠小区的发送图样不同, 且均表明所 述发现信号为间隔发送; 以及
对应的不同小区的发送图样表明开始发送发现信号的起始位置偏移不 同。
可选地,所述发送图样不同指所述发送图样至少存在以下一项信息不同: 在对应小区内发送发现信号的周期;
每个周期中发送的突发数;
每个突发内发送的携带发现信号的子帧数;
相邻突发之间的间隔;
开始发送发现信号的起始位置偏移; 以及
占用的频率资源和 /或序列资源。
可选地,所述基站是设置成根据一个或多个小区的发现信号的发送图样, 为不同的终端确定用于测量发现信号的测量图样: 基于测量需求确定所述终 端的测量图样, 所述测量需求包括定性测量需求和 /或定量测量需求。
可选地, 所述终端的测量图样包括用于测量一个或多个小区的发现信号 的测量图样, 所述终端用于测量一个小区的发现信号的测量图样为所述基站 用于发送所述小区的发现信号的发送图样的全集或子集。
本发明实施例还提供了一种终端, 该终端包括: 配置接收模块和发现信 号测量模块, 其中,
所述配置接收模块设置成: 接收基站发送的用于测量发现信号的测量图 样配置, 所述测量图样为所述基站根据一个或多个小区的发现信号的发送图 样确定的; 以及
所述发现信号测量模块设置成: 基于所述测量图样测量的发现信号。 可选地, 所述终端的测量图样包括用于测量所述基站对应的所有小区的 发现信号的信息。
可选地, 不同终端的测量图样符合以下至少一种情形:
当同频测量时, 不同终端的测量图样相同;
当异频测量时, 不同终端的测量图样相同;
当同频测量时, 不同终端的测量图样不同, 在一个周期内测量的突发或 子帧相互错开; 以及 当异频测量时, 不同终端的测量图样在一个周期内测量的突发或子帧相 互错开。
可选地, 所述测量图样包括用于表明以下内容的信息:
每个周期测量的突发数目; 每个突发中测量的携带发现信号的子帧数; 以及上报测量结果需要测量的周期数。
相较于相关技术, 本发明实施例的发现信号测量方法、 基站以及终端给 出了根据发现信号的发送图样确定终端的用于测量发现信号的测量图样, 为 终端配置测量图样提供了明确的实现方案, 便于终端对各基站发送的发现信 号进行测量, 满足终端的测量需求。 附图概述
图 1为本发明实施例的发现信号测量方法实施例 1的示意图;
图 2为连续发送方案的发送图样示意图, 其中按固定周期 T发送发现信 号;
图 3 为按固定周期 T发送发现信号, 每个周期 T内发送 M个突发的发 送图样示意图;
图 4为不同小区对应不同的发现信号的发送图样的示意图;
图 5为各小区在相同的位置发送发现信号的示意图;
图 6为各小区以不同的位置偏移发送发现信号的示意图;
图 7 为不同 UE使用相同测量图样的示意图;
图 8为不同 UE使用不同测量图样的示意图;
图 9为发现信号测量图样配置的示意图;
图 10为本发明实施例的发现信号测量方法实施例 2的示意图; 图 11为本发明实施例的基站的模块结构示意图;
图 12为本发明实施例的终端的模块结构示意图。
本发明的较佳实施方式 下面结合附图和具体实施例对本发明所述技术方案作详细描述, 以使本 领域的技术人员可以更好的理解本发明并能予以实施, 但所举实施例不作为 对本发明的限定。 需要说明的是, 在不冲突的情况下, 本申请中的实施例及 实施例中的特征可以相互组合。
本发明实施例的发现信号测量方法主要涉及基站和终端, 以下分别从基 站和终端两个不同角度, 对本发明的实施例进行说明:
实施例 1
本发明实施例的发现信号测量方法实施例, 该方法包括:
步骤 101 : 基站根据一个或多个发现信号的发送图样, 为不同终端确定 用于测量发现信号的测量图样;
需要说明的是, 为了简要起见, 本发明实施例也描述为小区接收或发送 图样, 但应当理解的是, 此处的小区真正的含义是小区对应的基站。
本发明实施例所说的基站包括宏基站、 家庭基站等各种基站。 不同网络 制式或网络环境下, 一个基站对应的小区数目有所不同, 本发明实施例对此 不做限定。
发现信号按小区区分, 即同一个基站下的多个小区的发现信号发送图样 也可以配置为不同的。
所述发送图样通过以下任一种方式确定:
( 1 )所述基站自主确定; 或,
( 2 )接收中心节点基站或其他基站发送的配置信令, 根据所述配置信令 配置所述发送图样, 所述发送图样是所述中心节点基站集中确定的, 或所述 基站与其他基站协调确定的。
具体地, 对于信令配置的方式包括以下两种:
a) 集中式(有中心节点基站) : 网络中存在中心节点基站, 协调多个基 站后, 配置所述基站的发送图样;
b)和分布式(无中心节点基站, 所有基站的关系是对等的): 网络中的 多个基站分布式地, 相互协调确定发送图样, 由参与协商的基站之一配置所 述基站的发送图样。
可选地, 所述发送图样表明所述发现信号的发送模式为:
发送模式 1 : 按照预定发送周期持续发送发现信号; 或;
发送模式 2: 在一个周期内发送预定个数突发, 每个突发内发送预定个 数的携带发现信号的子帧, 相邻突发之间的间隔为预定值。
对于发送模式 1 , 只需要配置发送周期 T即可。
如附图 2 所示, 小区将每隔周期 T 发送一次发现信号, 即在 0,T,2T, ... ,ΝΤ,(Ν+1)Τ,(Ν+2)Τ, ... ,2ΝΤ, (2Ν+1)Τ,(2Ν+2)Τ, ...时刻发送发现信号。
例如, 对于 DS 沿用传统 PSS/SSS/CRS信号这种情形, T 可以是传统 PSS/SSS/CRS信号发送周期 TO的整数倍, 例如 PSS发送周期为 5ms, 则 DS 的发送周期等于 TO, 也可以是 TO的整数倍, 比如可以取 5ms、 10ms, 20ms 等。对于全新设计的 DS, T的取值则更加灵活, 比如可以取 2ms, 5ms, 10ms, 50ms, 100ms等。
相应地, 发送模式 2是指按周期 N*T发送发现信号, 每个周期中发送 L 个突发, 每个突发中包括 M个携带发现信号的子帧, 相邻突发之间间隔为 对应激活小区的发送图样和对应休眠小区的发送图样相同, 且均表明所 述发现信号为间隔发送;
对应激活小区的发送图样表明所述发现信号为持续发送, 对应休眠小区 的发送图样表明所述发现信号为间隔发送;
对应激活小区的发送图样和对应休眠小区的发送图样不同, 且均表明所 述发现信号为间隔发送;
对应的不同小区的发送图样表明开始发送发现信号的起始位置偏移不 同。
不同小区的发送图样符合以下至少一种情形:
所述发送图样不同是指所述发送图样至少存在以下一项信息不同: 在对应小区内发送发现信号的周期; 每个周期中发送的突发数;
每个突发内发送的携带发现信号的子帧数;
相邻突发之间的间隔;
开始发送发现信号的起始位置偏移;
占用的频率资源和 /或序列资源。
占用的频率资源是指对于发现信号使用 CRS或其他带宽可变的发现信号 的情形, 可配置不同小区在频域上发送发现信号占用不同的频率资源, 例如 有的小区发送的 CRS序列较长, 占用的频率资源 (带宽)较多, 有的小区 CRS 占用的频率资源 (带宽)较少, 同时当频率资源发生改变时,序列资源也会相应 发生改变, 因此也需要一并指示。
在 Small Cell场景下, 存在多个小小区, 为了发现和选择小区, 需要发送 小区发现信号(Discovery Signal ) , 激活小区和休眠小区发送 DS信号有不同 的限制。 UE 需要检测小区发现信号, 以辅助网络侧进行休眠小区的激活 /去 激活, 以及进行激活小区的选择。 UE可对发现信号进行有无检测和 /或定量 检测, 两种检测对 DS 测量图样有不同的测量需求, 所述测量需求主要是指 针对测量类型和 /或测量量的需求, 即, 定性测量需求和 /或定量测量需求, 其 中, 定量测量需求还可以包括测量强度的需求。 因此, 可选地, 所述基站基 于测量需求确定所述终端的测量图样, 所述测量需求包括定性测量需求和 /或 定量测量需求。
步骤 102: 所述基站为不同的终端配置该终端对应的测量图样; 所述终端的测量图样包括用于测量一个或多个小区的发现信号的测量图 样, 所述终端用于测量一个小区的发现信号的测量图样是所述基站用于发送 该小区的发现信号的发送图样的全集或子集。
所述终端的测量图样包括用于测量所述基站对应的所有小区的发现信号 的信息, 从而保证各小区都有发现信号落在终端测量图样间隙 (Gap ) 内, 以便 UE可以发现各小区, 以免漏检小区。
各小区确定发现信号发送图样后,开始按照图样发送发现信号, UE可以 对各小区的发现信号进行测量。 基站可根据 UE不同的测量需求来配置不同 的测量图样, 所述测量需求包括定性测量需求和 /或定量测量需求。 UE测量 某小区的 DS测量图样应该是该小区 DS发送图样的全集或子集。 DS测量图 样可以是 UE专有的, 即每个 UE可以配置不同的测量图样。
对于同频测量, 可以配置各 UE使用相同的测量图样来进行测量, 由于 同频测量时 UE不需要暂停数据发送, 因此频谱效率不会受到影响; 而对于 异频测量的 UE, 由于测量时需要暂停数据发送, 则应该尽可能地使其测量图 样相互错开, 以避免大量 UE同时停止发送导致的频谱效率下降。
对于同频测量, 可以配置不同 UE使用相同的测量图样进行测量。
对于异频测量, 尽量配置不同 UE使用不同的测量图样进行测量, 各 UE 的测量图样尽可能相互错开, 以避免在测量间隔中各 UE同时停止发送。
对于每个 UE, 可以配置每个周期内测量的突发数目(L1为小于等于 L的 任意整数), 每个突发中测量的携带发现信号的子帧数(Ml为小于等于 M的 任意整数) , 起始测量帧号, 测量 S个周期后上报一次测量结果。
UE进行 DS有无检测和强度检测有着不同的测量需求, 有无检测所需要 的样本数较少, 而强度检测需要的样本数较多, 滤波时间更长。
考虑待测量小区 1的发现信号发送图样配置为最小发送间隔 T, 发送周 期 N (实际周期为 Ν*Τ ) , 每个周期发送的突发数目 L, 每个突发中的携带 发现信号的子帧数 M, 相邻突发之间的间隔 P (实际间隔为 P*T)。
对于每个 UE, 可以配置每个周期内测量的突发数目(L1为小于等于 L的 任意整数), 每个突发中测量的携带发现信号的子帧数(Ml为小于等于 M的 任意整数) , 测量 S个周期后上报一次测量结果。
可选地, 可配置各 UE在一个周期内测量不同的突发或子帧, 来达到各 UE测量图样相互错开的目的。
不同终端的测量图样符合以下至少一种情形:
当同频测量时, 不同终端的测量图样相同;
当异频测量时, 不同终端的测量图样相同; 当同频测量时, 不同终端的测量图样不同, 在一个周期内测量的突发或 子帧相互错开;
当异频测量时, 不同终端的测量图样在一个周期内测量的突发或子帧相 互错开。
所述测量图样包括用于表明以下内容的信息:
每个周期测量的突发数目; 每个突发中测量的携带发现信号的子帧数; 上报测量结果需要测量的周期数。
步骤 103: 所述基站在发送图样对应的小区发送发现信号; 终端根据配 置的测量图样测量发现信号。
本发明实施例中, 步骤 102和步骤 103没有严格的先后顺序。
本发明实施例所使用的方法, 可以配置不同小区釆用不同的 DS发送图 样, 以适合各小区不同的功率约束条件, 同时避免各小区之间存在的干扰, 以及满足 UE不同的测量需求。 配置 UE使用 UE专有的测量图样, 使得各 UE的测量 GAP相互错开, 与相关技术相比, 避免了所有 UE同时停止发送, 提高了频谱效率。
激活小区和休眠小区可以使用相同的发送图样。 各小区也可根据本小区 的情况选择不同的发送图样, 例如激活小区功耗限制较为宽松, 可以配置激 活小区发送完整信号集合, 例如使用持续发送的发送图样; 休眠小区出于省 电考虑, 可以配置休眠小区发送激活小区 DS的子集, 例如, 使用间隔发送的 发送图样。
以下结合附图和应用实例对发送图样进行详细说明:
应用实例 1
配置激活小区和休眠小区都使用持续发送发现信号的发送图样, 需要配 置的参数为: 发送周期
根据上述参数配置, 如图 2 所示, 激活小区和休眠小区均在 0,T,2T, ... ,ΝΤ,(Ν+1)Τ,(Ν+2)Τ, ... ,2ΝΤ, (2Ν+1)Τ,(2Ν+2)Τ,…等时刻发送发现信 号。 该应用实例中, 发现信号发送图样的优点在于配置和发送简单, 对于传 统信号只需要直接复用即可。 应用实例 2
配置激活小区和休眠小区使用间隔发送发现信号的发送图样, 需要配置 侧参数有: 最小发送间隔 T, 发送周期 N (实际周期为 Ν*Τ ) , 每个周期发送 的突发数目 L, 每个突发中的携带发现信号的子帧数 M, 相邻突发之间的间隔 P (实际间隔为 P*T)。
根据上述参数配置, 如图 3所示,
激活小区和休眠小区的发现信号的发送图样均为:
第一个周期, 0~NT内:
第一个突发从 0时刻开始: 在 0,Τ,2Τ, ... ,ΜΤ时刻发送发现信号; 第二个突发从 (Μ+Ρ)Τ 时刻开始: 在 (Μ+Ρ)Τ,(Μ+Ρ)Τ+Τ, (Μ+Ρ)Τ+2Τ,..., (Μ+Ρ)Τ+ΜΤ时刻发送发现信号;
第 L个突发从 (L-1)(M+P)T 时刻开始: 在 (L-1)(M+P)T, (L-1)(M+P)T+T,
(L-1)(M+P)T+2T, · · · ,(L-1)(M+P)T+MT时刻发送发现信号;
第二个周期, NT 2NT内:
第一个突发从 NT时刻开始:在 NT,NT+T,NT+2T,...,NT+MT时刻发送发 现信号;
第二个突发从 NT+(M+P)T 时刻开始: 在 NT+(M+P)T, NT+(M+P)T+T,
NT+(M+P)T+2T, ... , ΝΤ+(Μ+Ρ)Τ+ΜΤ时刻发送发现信号;
第 L 个突发从 NT+(L-1)(M+P)T 时刻开始: 在 NT+(L-1)(M+P)T, NT+(L-1)(M+P)T+T, NT+(L-1)(M+P)T+2T, ... , NT+(L-1)(M+P)T+MT时刻发送 发现信号;
第 k个周期内, (k-l)NT~kNT内:
第一个突发从 NT 时刻开始: 在 (k-l)NT, (k-l)NT+T, (k-l)NT+2T,..., (k-l)NT+MT时刻发送发现信号; 第二个突发从 (k-l)NT+(M+P)T 时刻开始: 在(k-l)NT+(M+P)T, (k-l)NT+(M+P)T+T, (k-l)NT+(M+P)T+2T,..., (k-l)NT+(M+P)T+MT时刻发送 发现信号;
第 L个突发从 (k-l)NT+(L-l)(M+P)T时刻开始: 在 (k-l)NT+(L-l)(M+P)T, (k- 1 )NT+(L- 1 )(M+P)T+T, (k- 1 )NT+(L- 1 )(M+P)T+2T, ... ,
(k- 1 )NT+(L- 1 )(M+P)T+MT 时刻发送发现信号。
本应用实例 2中, 发现信号发送图样的优点在于配置灵活, 可根据小区 发现的需求, 以及发送功率限制, 调整发送周期 N*T, 周期内的发送突发数 L, 以及突发内的发送子帧M。
应用实例 3
配置激活小区使用持续发送发现信号的发送图样。 需要配置的参数为: 发送周期1\
配置休眠小区使用间隔发送的发现信号图样, 需要配置侧参数有: 最小 发送间隔 T, 发送周期 N (实际周期为 Ν*Τ ) , 每个周期发送的突发数目 L, 每个突发中的携带发现信号的子帧数 M, 相邻突发之间的间隔 P (实际间隔为 P*T)。
根据上述参数配置, 激活小区的发现信号图样, 如图 2 所示, 在 0,Τ,2Τ,...,ΝΤ,(Ν+1)Τ, (Ν+2)Τ, ... ,2ΝΤ, (2Ν+1)Τ,(2Ν+2)Τ,…等时刻发送发现信 号;
休眠小区的发现信号图样, 如图 3所示, 与应用实例 2中的发送图样相同, 在此不再赘述。
本应用实例中, 发现信号发送图样的优点在于配置灵活, 激活小区功率 限制较为宽松, 可发送较多的发现信号, 以供 UE发现和选择激活小区为自 己服务; 而休眠小区功率限制较为严格, 可根据小区发现的需求, 灵活调整 发送周期 Ν*Τ, 周期内的发送突发数 L, 以及突发内的发送子帧M。 应用实例 4
不同休眠小区也可以配置为使用不同的发现信号图样, 例如每个周期内 发送不同的突发数, 或每个突发内发送不同的携带发现信号的帧数。 如附图 4 所示;
配置休眠小区 1使用间隔发送的发现信号图样。 需要配置的参数有: 最 小发送间隔 T, 发送周期 N (实际周期为 Ν*Τ ) , 每个周期发送的突发数目 L1 , 每个突发中的携带发现信号的子帧数 Ml , 相邻突发之间的间隔 P (实际 间隔为 P*T)。
配置休眠小区 2使用间隔发送的发现信号图样, 需要配置的参数有: 最 小发送间隔 Τ, 发送周期 Ν (实际周期为 Ν*Τ ) , 每个周期发送的突发数目 L2, 每个突发中的携带发现信号的子帧数 Μ2, 相邻突发之间的间隔 Ρ (实际 间隔为 Ρ*Τ)。
本应用实例发现信号发送图样的优点在于: 不同的休眠小区可能有不同 的功率限制和小区发现需求, 因此可配置不同的发送周期, 周期内发送的突 发数, 以及突发内的发送子帧数。
应用实例 5
该应用实例中, 各小区可以以相同的起始位置开始发送发现信号, 以便 后续处理, 如图 5所示(以一个周期内发送一个突发的间隔发送方案为例), 每个小区都在:
第一个周期内, 在 0,Τ,2Τ, ... ,ΜΤ时刻发送发现信号;
第二个周期内, 在 ΝΤ,ΝΤ+Τ,ΝΤ+2Τ, ... ,ΝΤ+ΜΤ时刻发送发现信号; 第 k个周期内 ,在 (k-l)NT,(k-l)NT+T,(k-l)NT+2T,...,NT+MT时刻发送发 现信号; 本应用实例发现信号发送图样适用于同频小区, 有利于 UE在相同的位 置对这些小区进行测量, 操作简单。
在替换的方案中, 可以配置各小区釆用不同的起始位置偏移发送发现信 号, 以避免干扰。 如图 6所示 (以一个周期内发送一个突发的间隔发送方案 为例) 。
即小区 1在:
第一个周期内, 在 0,T,2T,...,MT时刻发送发现信号;
第二个周期内, 在 NT,NT+T,NT+2T, ... ,ΝΤ+ΜΤ时刻发送发现信号; 第 k个周期内,在 (k-l)NT,(k-l)NT+T,(k-l)NT+2T,...,NT+MT时刻发送发 现信号; 小区 2在:
第一个周期内, 在 T,2T,3T,...,(M+1)T时刻发送发现信号;
第二个周期内, 在 NT+T,NT+2T,NT+3T,.— ,NT+(M+1)T时刻发送发现信 号;
第 k个周期内 在 (k- 1 )NT+T,(k- 1 )NT+2T,(k- 1 )NT+3 T, ... ,NT+(M+ 1 )T时 刻发送发现信号; 小区 3在:
第一个周期内, 在 2Τ,3Τ,4Τ,...,(Μ+2)Τ,时刻发送发现信号;
第二个周期内,在 ΝΤ+2Τ,ΝΤ+3Τ,ΝΤ+4Τ, ... ,ΝΤ+(Μ+2)Τ时刻发送发现信 号;
第 k个周期内 , 在 (k-l)NT+2T,(k-l)NT+3T,(k-l)NT+4T, ... ,NT+(M+2)T时 刻发送发现信号;
其他小区以此类推。 本应用实例发现信号发送图样适用于异频小区, 有利于 UE在不同的位 置对这些小区进行测量, 避免同时停止发送。
以下结合附图和应用实例对测量图样进行详细说明:
具体地,以三个小区每个小区下有 3个 UE为例,小区 1下有 UE11、UE12、
UE13 , 小区 2下有 UE21、 UE22、 UE23、 小区 3下有 UE31、 UE32、 UE33。 小区 2和小区 1为同频, 小区 3和小区 1为异频。 应用实例 6
对于同频测量, 不同 UE可以使用相同的测量图样进行测量, 如图 7所 示。
以一个周期内发送一个突发的间隔发送方案为例, 小区 1在:
第一个周期内, 在 0,T,2T,...,MT,时刻发送发现信号;
第二个周期内, 在 NT,NT+T,NT+2T, ... ,ΝΤ+ΜΤ等时刻发送发现信号; 第 k个周期内,在 (k-l)NT,(k-l)NT+T,(k-l)NT+2T,...,NT+MT等时刻发送 发现信号;
可配置 UE11、 UE12、 UE13、 UE21、 UE22、 UE23使用相同的测量图样 对小区 1进行测量:
第一个周期内, 在 0时刻测量发现信号;
第二个周期内, 在 NT时刻测量发现信号;
第 k个周期内, 在 (k-l)NT时刻测量发现信号。
本应用实例测量图样配置方法有利于各 UE统一操作, 网络侧集中处理 测量结果。 应用实例 7
对于异频测量, 不同 UE可以使用不同的测量图样进行测量, 可配置各 UE使用相互错开的测量图样, 以避免在测量间隔中各 UE同时停止发送, 如 图 8所示。
以一个周期内发送一个突发的间隔发送方案为例, 小区 1在:
第一个周期内, 在 0,T,2T,...,MT,时刻发送发现信号;
第二个周期内, 在 NT,NT+T,NT+2T, ... ,ΝΤ+ΜΤ等时刻发送发现信号; 第 k个周期内,在 (k-l)NT,(k-l)NT+T,(k-l)NT+2T,...,NT+MT等时刻发送 发现信号;
小区 3下的三个 UE, UE31、 UE32、 UE33 , 测量小区 1的 DS, 均属于 异频测量, 可配置各 UE在一个周期内测量不同的突发或子帧, 来达到各 UE 测量图样相互错开的目的。
UE31在第一个周期内, 在 0时刻测量发现信号;
第二个周期内, 在 NT时刻测量发现信号;
第 k个周期内, 在 (k-l)NT时刻测量发现信号;
―….
UE32在 :
第一个周期内, 在 T时刻测量发现信号;
第二个周期内, 在 NT+T时刻测量发现信号;
第 k个周期内, 在 (k-l)NT+T时刻测量发现信号;
……
UE33在:
第一个周期内, 在 2T时刻测量发现信号;
第二个周期内, 在 NT+2T时刻测量发现信号;
第 k个周期内, 在 (k-l)NT+2T时刻测量发现信号;
……
本应用实例中, 测量图样配置方法有利于各 UE错开测量图样, 避免了 各 UE同时停止发送进行测量导致的频谱效率降低, 可提高网络频谱效率。
应用实例 8
UE进行 DS有无检测和强度检测有着不同的测量需求, 有无检测所需要 的样本数较少, 而强度检测需要的样本数较多, 滤波时间更长。
小区 1的发现信号发送图样配置为最小发送间隔 T, 发送周期 N (实际 周期为 Ν*Τ ) , 每个周期发送的突发数目 L, 每个突发中的子帧数 M, 相邻 突发之间的间隔 P (实际间隔为 P*T)。
对于每个 UE,可以配置每个周期内测量的突发数目 LI (L1为小于等于 L 的任意整数),每个突发中测量的子帧数 M1( M1为小于等于 M的任意整数), 测量 S个周期后可上 次测量结果, 为减少上^艮开销, 可配置一个阔值, 只有当发现信号的测量强度或信号强度超过配置的阔值时,才进行测量上才艮。 如图 9所示, UE将在:
第一个周期, 0~ΝΤ内:
第一个突发: 在 0,Τ,2Τ,...,Μ1Τ时刻测量发现信号;
第二个突发: 在 (Μ+Ρ)Τ,(Μ+Ρ)Τ+Τ, (Μ+Ρ)Τ+2Τ,..., (Μ+Ρ)Τ+Μ1Τ时刻测 量发现信号;
第 L1 个 突 发 : 在 (L1-1)(M+P)T, (L1-1)(M+P)T+T, (L1-1)(M+P)T+2T, ... ,(L1-1)(M+P)T+M1T时刻测量发现信号;
第二个周期 , NT 2NT内:
第一个突发: 在 NT,NT+T,NT+2T,...,NT+M1T时刻测量发现信号; 第二个突发: 在 NT+(M+P)T, NT+(M+P)T+T, NT+(M+P)T+2T, ... , ΝΤ+(Μ+Ρ)Τ+Μ1Τ时刻测量发现信号;
第 L1 个 突 发 : 在 NT+(L1-1)(M+P)T, NT+(L1-1)(M+P)T+T, NT+(L1-1)(M+P)T+2T,... , NT+(L1-1)(M+P)T+M1T时刻测量发现信号; 第 k个周期内, (k-l)NT~kNT内:
第一个突发: 在 (k-l)NT, (k-l)NT+T, (k-l)NT+2T,..., (k-l)NT+MlT时刻 测量发现信号;
第 二 个 突 发 : 在 (k-l)NT+(M+P)T, (k-l)NT+(M+P)T+T, (k-l)NT+(M+P)T+2T,..., (k-l)NT+(M+P)T+MlT时刻测量发现信号;
第 L1 个突发: 在(k-l)NT+(Ll-l)(M+P)T, (k- 1 )NT+(L 1 - 1 )(M+P)T+T, (k-l)NT+(Ll-l)(M+P)T+2T,... , (k- 1 )NT+(L 1 - 1 )(M+P)T+M1 T 时刻测量发现信 号;
UE可以在 S个测量周期之后的, (S-l)NT时刻给出一次 DS测量结果。
应用实例 9
该应用实例中, UE21对于小区 1进行有无检测, 以每个周期内测量 1个 突发, 每个突发测量 2个子帧为例, UE21将在:
第一个周期内, 在 Ο,Τ时刻测量发现信号;
第二个周期内, 在 ΝΤ,ΝΤ+Τ时刻测量发现信号;
第 k个周期内, 在 (k-l)NT,(k-l)NT+T时刻测量发现信号;
UE可以每个测量周期 NT, 都输出一次有无检测的测量结果。
UE22对于小区 1进行定量检测, 以每个周期测量 2个突发,每个突发测 量 4个子帧为例, UE22将在:
第一个周期, 0~ΝΤ内:
第一个突发: 在 0,Τ,2Τ,3Τ时刻测量发现信号;
第二个突发: 在 (Μ+Ρ)Τ,(Μ+Ρ)Τ+Τ, (Μ+Ρ)Τ+2Τ, (Μ+Ρ)Τ+3Τ时刻测量发 现信号;
第二个周期, ΝΤ 2ΝΤ内:
第一个突发: 在 ΝΤ,ΝΤ+Τ,ΝΤ+2Τ,ΝΤ+3Τ时刻测量发现信号;
第二个突发: 在 ΝΤ+(Μ+Ρ)Τ, ΝΤ+(Μ+Ρ)Τ+Τ, ΝΤ+(Μ+Ρ)Τ+2Τ,
ΝΤ+(Μ+Ρ)Τ+3Τ时刻测量发现信号; 第 k个周期内, (k-l)NT~kNT内:
第一个突发: 在 (k-l)NT, (k-l)NT+T, (k-l)NT+2T,(k-l)NT+3T时刻测量发 现信号;
第 二 个 突 发 : 在 (k-l)NT+(M+P)T, (k-l)NT+(M+P)T+T, (k- 1 )NT+(M+P)T+2T,(k- 1 )NT+(M+P)T+3 T时刻测量发现信号。
如图 10所示, 本发明实施例的发现信号测量方法实施例包括:
步骤 1001 : 终端接收基站发送的用于测量发现信号的测量图样配置, 所 述测量图样为所述基站根据一个或多个小区的发现信号的发送图样确定的; 可选地, 所述终端的测量图样包括用于测量所述基站对应的所有小区的 发现信号的信息。
不同终端的测量图样符合以下至少一种情形:
当同频测量时, 不同终端的测量图样相同;
当异频测量时, 不同终端的测量图样相同;
当同频测量时, 不同终端的测量图样不同, 在一个周期内测量的突发或 子帧相互错开;
当异频测量时, 不同终端的测量图样在一个周期内测量的突发或子帧相 互错开。
可选地, 同频测量时, 不同终端的测量图样相同; 异频测量时, 不同终 端的测量图样不同。
所述测量图样包括用于表明以下内容的信息:
每个周期测量的突发数目; 每个突发中测量的子帧数; 上报测量结果需 要测量的周期数。
步骤 1002: 所述终端基于所述测量图样测量发现信号。
为实现上述方法, 本发明实施例还提供了一种基站, 如图 11所示, 该基 站包括: 测量图样确定模块 1101、 测量图样配置模块 1102, 以及发现信号发 送模块 1103 , 其中, 所述测量图样确定模块 1101设置成:根据一个或多个小区的发现信号的 发送图样, 为不同的终端确定用于测量发现信号的测量图样;
所述测量图样配置模块 1102设置成:为不同的终端配置该终端对应的测 量图样;
所述发现信号发送模块 1103设置成:在所述发送图样对应的小区发送发 现信号。
可选地, 所述基站通过以下任一种方式确定发送图样:
( 1 ) 由所述基站自主确定; 或,
( 2 )接收中心节点基站或除中心节点基站之外的其他基站发送的配置信 令, 根据所述配置信令配置所述发送图样, 所述发送图样为所述中心节点基 站集中确定的, 或所述中心节点基站与除中心节点基站之外的其他基站协调 确定的。
可选地, 所述发送图样表明所述发现信号的发送模式为:
按照预定发送周期持续发送发现信号; 或;
在一个周期内发送预定个数突发, 每个突发内发送预定个数的子帧, 相 邻突发之间的间隔为预定值。
可选地, 不同小区的发送图样符合以下至少一种情形:
对应激活小区的发送图样和对应休眠小区的发送图样相同, 且均表明所 述发现信号为间隔发送;
对应激活小区的发送图样表明所述发现信号为持续发送, 对应休眠小区 的发送图样表明所述发现信号为间隔发送;
对应激活小区的发送图样和对应休眠小区的发送图样不同, 且均表明所 述发现信号为间隔发送;
对应的不同小区的发送图样表明开始发送发现信号的起始位置偏移不 同。
可选地,所述发送图样不同指所述发送图样至少存在以下一项信息不同: 在对应小区内发送发现信号的周期; 每个周期中发送的突发数;
每个突发内发送的子帧数;
相邻突发之间的间隔;
开始发送发现信号的起始位置偏移。
可选地, 所述基站基于测量需求确定所述终端的测量图样, 所述测量需 求包括定性测量需求和 /或定量测量需求。
可选地, 所述终端的测量图样包括用于测量一个或多个小区的发现信号 的测量图样, 所述终端用于测量一个小区的发现信号的测量图样是所述基站 用于发送该小区的发现信号的发送图样的全集或子集。
为实现上述方法,本发明实施例还提供了一种终端实施例,如图 12所示, 在该实施例中该终端包括: 配置接收模块 1201和发现信号测量模块 1202, 其中,
所述配置接收模块 1201设置成:接收基站发送的用于测量发现信号的测 量图样配置, 所述测量图样是所述基站根据一个或多个小区的发现信号的发 送图样确定的;
所述发现信号测量模块 1202设置成: 基于所述测量图样测量的发现信 号。
可选地, 所述终端的测量图样包括用于测量所述基站对应的所有小区的 发现信号的信息。
可选地, 不同终端的测量图样符合以下至少一种情形:
当同频测量时, 不同终端的测量图样相同;
当异频测量时, 不同终端的测量图样相同;
当同频测量时, 不同终端的测量图样不同, 在一个周期内测量的突发或 子帧相互错开;
当异频测量时, 不同终端的测量图样在一个周期内测量的突发或子帧相 互错开。 可选地, 同频测量时, 不同终端的测量图样相同; 异频测量时, 不同终 端的测量图样不同。
可选地, 所述测量图样包括用于表明以下内容的信息:
每个周期测量的突发数目; 每个突发中测量的子帧数; 上报测量结果需 要测量的周期数。
相较于相关技术, 本发明实施例的发现信号测量方法、 基站以及终端给 出了根据发现信号的发送图样确定终端的用于测量发现信号的测量图样, 为 终端配置测量图样提供了明确的实现方案, 又便于终端对各基站发送的发现 信号进行测量, 满足终端的测量需求。
所述终端用于测量一个小区的发现信号的测量图样是所述基站用于发送 该小区的发现信号的发送图样的全集或子集, 可以保证基于测量图样进行测 量时, 在相应位置上一定有发现信号发送, 提高了测量效率。
另外, 基站可根据不同的测量需求对测量图样进行灵活配置, 一方面, 可满足不同 UE的测量需求, 另一方面, 可利于各 UE合理规划测量间隔, 避 免异频测量时大量 UE同时停止发送, 提高了频谱效率。
无论是基站自主确定发送图样或由中心节点基站集中确定或与其他基站 协调确定, 都可以保证发送图样的灵活性, 避免各基站发现信号发送图样之 间存在的干扰。
本领域普通技术人员可以理解上述方法中的全部或部分步骤可通过程序 来指令相关硬件完成, 所述程序可以存储于计算机可读存储介质中, 如只读 存储器、 磁盘或光盘等。 可选地, 上述实施例的全部或部分步骤也可以使用 一个或多个集成电路来实现。 相应地, 上述实施例中的各模块 /单元可以釆用 硬件的形式实现, 也可以釆用软件功能模块的形式实现。 本发明不限制于任 何特定形式的硬件和软件的结合。
本发明实施例中所描述的模块仅是根据其功能进行划分的一种示例,可 理解地,在系统 /装置 /设备实现相同功能的情况下, 本领域技术人员可给出一 种或多种其他功能划分方式, 在具体应用时可将其中任意一个或多个功能模 块釆用一个功能实体装置或单元实现, 不可否认地, 以上变换方式均在本申 请保护范围之内。
显然,所描述的实施例仅仅是本发明一部分实施例,而非全部的实施例。 基于本发明中的实施例, 本领域普通技术人员在没有做出创造性劳动的前提 下所获得的所有其他实施例, 都属于本发明保护的范围。
工业实用性 本发明实施例的发现信号测量方法、 基站以及终端给出了根据发现信号 的发送图样确定终端的用于测量发现信号的测量图样, 为终端配置测量图样 提供了明确的实现方案, 便于终端对各基站发送的发现信号进行测量, 满足 终端的测量需求。 因此具有较强的工业实用性。

Claims

权 利 要 求 书
1、 一种发现信号的测量方法, 包括:
基站根据一个或多个小区的发现信号的发送图样, 为不同的终端确定用 于测量发现信号的测量图样;
所述基站为不同的终端配置所述终端对应的测量图样; 以及 所述基站在所述发送图样对应的小区发送所述发现信号, 终端根据配置 的测量图样测量发现信号。
2、 如权利要求 1所述的测量方法, 其中, 所述基站根据一个或多个小区 的发现信号的发送图样, 为不同的终端确定用于测量发现信号的测量图样的 步骤之前, 所述方法还包括: 所述基站通过以下任一种方式确定所述发送图样: 所述基站自主确定; 或,
接收中心节点基站或除中心节点基站之外的其他基站发送的配置信令, 根据所述配置信令配置所述发送图样, 所述发送图样是所述中心节点基站集 中确定的, 或所述中心节点基站与除中心节点基站之外的其他基站协调确定 的。
3、如权利要求 1所述的测量方法,其中:所述发现信号的发送模式包括: 按照预定发送周期持续发送发现信号; 或; 在一个周期内发送预定个数突发, 每个突发内发送预定个数的携带发现 信号的子帧, 相邻突发之间的间隔为预定值。
4、 如权利要求 1所述的测量方法, 其中, 不同小区的发送图样符合以下 至少一种情形: 对应激活小区的发送图样和对应休眠小区的发送图样相同, 且均表明所 述发现信号为间隔发送;
对应激活小区的发送图样表明所述发现信号为持续发送, 对应休眠小区 的发送图样表明所述发现信号为间隔发送;
对应激活小区的发送图样和对应休眠小区的发送图样不同, 且均表明所 述发现信号为间隔发送; 以及
对应的不同小区的发送图样表明开始发送发现信号的起始位置偏移不 同。
5、 如权利要求 4所述的测量方法, 其中: 所述发送图样不同指所述发送 图样至少存在以下一项信息不同:
在对应小区内发送发现信号的周期;
每个周期中发送的突发数;
每个突发内发送的携带发现信号的子帧数;
相邻突发之间的间隔;
开始发送发现信号的起始位置偏移; 以及
占用的频率资源和 /或序列资源。
6、 如权利要求 1所述的测量方法, 其中: 所述基站根据一个或多个小区 的发现信号的发送图样, 为不同的终端确定用于测量发现信号的测量图样的 步骤包括: 所述基站基于测量需求为不同的终端确定测量图样, 其中, 所述测量需 求包括定性测量需求和 /或定量测量需求。
7、 如权利要求 1所述的测量方法, 其中: 所述终端的测量图样包括用于 测量一个或多个小区的发现信号的测量图样, 所述终端用于测量一个小区的 发现信号的测量图样为所述基站用于发送所述小区的发现信号的发送图样的 全集或子集。
8、 一种发现信号的测量方法, 包括:
终端接收基站发送的用于测量发现信号的测量图样配置, 所述测量图样 为所述基站根据一个或多个小区的发现信号的发送图样确定的; 以及 所述终端基于所述测量图样测量发现信号。
9、 如权利要求 8所述的测量方法, 其中: 所述终端的测量图样包括用于 测量所述基站对应的所有小区的发现信号的信息。
10、 如权利要求 8所述的测量方法, 其中: 不同终端的测量图样符合以 下至少一种情形:
当同频测量时, 不同终端的测量图样相同;
当异频测量时, 不同终端的测量图样相同;
当同频测量时, 不同终端的测量图样不同, 在一个周期内测量的突发或 子帧相互错开; 以及
当异频测量时, 不同终端的测量图样在一个周期内测量的突发或子帧相 互错开。
11、 如权利要求 8所述的测量方法, 其中: 所述测量图样包括用于表明 以下内容的信息:
每个周期测量的突发数目;
每个突发中测量的携带发现信号的子帧数; 以及
上报测量结果需要测量的周期数。
12、 一种基站, 包括: 测量图样确定模块、 测量图样配置模块, 以及发 现信号发送模块, 其中,
所述测量图样确定模块设置成: 根据一个或多个小区的发现信号的发送 图样, 为不同的终端确定用于测量发现信号的测量图样;
所述测量图样配置模块设置成: 为不同的终端配置所述终端对应的测量 图样; 以及
所述发现信号发送模块设置成: 在所述发送图样对应的小区发送发现信 号。
13、 如权利要求 12所述的基站, 其中, 所述基站还设置成通过以下任一种方式确定所述发送图样: 由所述基站自主确定; 或,
接收中心节点基站或除中心节点基站之外的其他基站发送的配置信令, 根据所述配置信令配置所述发送图样, 所述发送图样为所述中心节点基站集 中确定的, 或所述中心节点基站与除中心节点基站之外的其他基站协调确定 的。
14、 如权利要求 12所述的基站, 其中: 所述发送图样表明所述发现信号 的发送模式包括:
按照预定发送周期持续发送发现信号; 或;
在一个周期内发送预定个数突发, 每个突发内发送预定个数的携带发现 信号的子帧, 相邻突发之间的间隔为预定值。
15、 如权利要求 12所述的基站, 其中, 不同小区的发送图样符合以下至 少一种情形:
对应激活小区的发送图样和对应休眠小区的发送图样相同, 且均表明所 述发现信号为间隔发送;
对应激活小区的发送图样表明所述发现信号为持续发送, 对应休眠小区 的发送图样表明所述发现信号为间隔发送;
对应激活小区的发送图样和对应休眠小区的发送图样不同, 且均表明所 述发现信号为间隔发送; 以及
对应的不同小区的发送图样表明开始发送发现信号的起始位置偏移不 同。
16、 如权利要求 15所述的基站, 其中: 所述发送图样不同指所述发送图 样至少存在以下一项信息不同:
在对应小区内发送发现信号的周期;
每个周期中发送的突发数;
每个突发内发送的携带发现信号的子帧数; 相邻突发之间的间隔;
开始发送发现信号的起始位置偏移; 以及
占用的频率资源和 /或序列资源。
17、 如权利要求 12所述的基站, 其中: 所述基站是设置成通过如下方式 根据一个或多个小区的发现信号的发送图样, 为不同的终端确定用于测量发 现信号的测量图样: 基于测量需求确定所述终端的测量图样, 所述测量需求包括定性测量需 求和 /或定量测量需求。
18、 如权利要求 12所述的基站, 其中: 所述终端的测量图样包括用于测 量一个或多个小区的发现信号的测量图样, 所述终端用于测量一个小区的发 现信号的测量图样为所述基站用于发送所述小区的发现信号的发送图样的全 集或子集。
19、 一种终端, 包括: 配置接收模块和发现信号测量模块, 其中, 所述配置接收模块设置成: 接收基站发送的用于测量发现信号的测量图 样配置, 所述测量图样为所述基站根据一个或多个小区的发现信号的发送图 样确定的; 以及
所述发现信号测量模块设置成: 基于所述测量图样测量发现信号。
20、 如权利要求 19述的终端, 其中: 所述终端的测量图样包括用于测量 所述基站对应的所有小区的发现信号的信息。
21、 如权利要求 19述的终端, 其中: 不同终端的测量图样符合以下至少 一种情形:
当同频测量时, 不同终端的测量图样相同;
当异频测量时, 不同终端的测量图样相同;
当同频测量时, 不同终端的测量图样不同, 在一个周期内测量的突发或 子帧相互错开; 以及 当异频测量时, 不同终端的测量图样在一个周期内测量的突发或子帧相 互错开。
22、 如权利要求 19述的终端, 其中: 所述测量图样包括用于表明以下内 容的信息:
每个周期测量的突发数目;
每个突发中测量的携带发现信号的子帧数; 以及
上报测量结果需要测量的周期数。
PCT/CN2014/080273 2013-07-26 2014-06-19 发现信号测量的方法、基站及终端 Ceased WO2015010510A1 (zh)

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