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 PDFInfo
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- 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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- measurement
- discovery signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/08—Testing, supervising or monitoring using real traffic
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/06—Testing, supervising or monitoring using simulated traffic
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
- H04W48/12—Access restriction or access information delivery, e.g. discovery data delivery using downlink control channel
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/16—Discovering, processing access restriction or access information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/02—Resource partitioning among network components, e.g. reuse partitioning
- H04W16/10—Dynamic resource partitioning
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/20—Manipulation of established connections
- H04W76/27—Transitions between radio resource control [RRC] states
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing 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
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Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| HK16112004.1A HK1223770A1 (zh) | 2013-07-26 | 2014-06-19 | 发现信号测量的方法、基站及终端 |
| JP2016528313A JP6239752B2 (ja) | 2013-07-26 | 2014-06-19 | 検出用信号の測定方法、基地局及び端末 |
| CA2919354A CA2919354C (en) | 2013-07-26 | 2014-06-19 | Method for measuring discovery signal, base station, and terminal |
| US15/006,493 US9769690B2 (en) | 2013-07-26 | 2014-06-19 | Method for measuring discovery signal, base station, and terminal |
| EP14829870.6A EP3016464B1 (en) | 2013-07-26 | 2014-06-19 | Method for measuring discovery signal, base station, and terminal |
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| CN201310319612.2A CN104349378B (zh) | 2013-07-26 | 2013-07-26 | 发现信号测量的方法、基站及终端 |
| CN201310319612.2 | 2013-07-26 |
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| WO2015010510A1 true WO2015010510A1 (zh) | 2015-01-29 |
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| PCT/CN2014/080273 Ceased WO2015010510A1 (zh) | 2013-07-26 | 2014-06-19 | 发现信号测量的方法、基站及终端 |
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| US (1) | US9769690B2 (zh) |
| EP (1) | EP3016464B1 (zh) |
| JP (1) | JP6239752B2 (zh) |
| CN (1) | CN104349378B (zh) |
| CA (1) | CA2919354C (zh) |
| HK (1) | HK1223770A1 (zh) |
| WO (1) | WO2015010510A1 (zh) |
Cited By (1)
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| WO2016119326A1 (zh) * | 2015-01-30 | 2016-08-04 | 宇龙计算机通信科技(深圳)有限公司 | 一种异频测量非授权频谱的测量间隔配置方法及服务基站 |
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| US10028207B2 (en) * | 2014-01-16 | 2018-07-17 | Industry-University Cooperation Foundation Banyard University | Method for transmitting and receiving downlink channel for MTC terminal, and apparatus therefor |
| US9832629B2 (en) * | 2014-01-28 | 2017-11-28 | Qualcomm Incorporated | Discovery signals and network synchronization signals design in LTE |
| KR101868251B1 (ko) | 2014-04-24 | 2018-06-15 | 엘지전자 주식회사 | 측정 수행 방법 및 단말 |
| WO2015182915A1 (ko) * | 2014-05-27 | 2015-12-03 | 엘지전자(주) | 무선 통신 시스템에서 디스커버리 참조 신호를 이용하여 측정을 수행하기 위한 방법 및 이를 위한 장치 |
| WO2017023144A1 (en) * | 2015-08-06 | 2017-02-09 | Samsung Electronics Co., Ltd. | Method and apparatus for performing inter-carrier d2d communication |
| US10367677B2 (en) | 2016-05-13 | 2019-07-30 | Telefonaktiebolaget Lm Ericsson (Publ) | Network architecture, methods, and devices for a wireless communications network |
| US10630410B2 (en) | 2016-05-13 | 2020-04-21 | Telefonaktiebolaget Lm Ericsson (Publ) | Network architecture, methods, and devices for a wireless communications network |
| CN108282794B (zh) * | 2017-01-06 | 2021-09-14 | 华为技术有限公司 | 一种测量方法、装置及系统 |
| CN110583039B (zh) * | 2017-05-12 | 2024-01-19 | 苹果公司 | 用于下一代无线电(nr)和长期演进(lte)的测量设计 |
| CN109151922B (zh) * | 2017-06-16 | 2021-05-14 | 华为技术有限公司 | 测量方法、测量配置方法和相关设备 |
| US11451968B2 (en) * | 2019-05-21 | 2022-09-20 | Electronics And Telecommunications Research Institute | Method for transmitting and receiving discovery burst in shared band |
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Also Published As
| Publication number | Publication date |
|---|---|
| CA2919354C (en) | 2019-01-15 |
| JP2016531480A (ja) | 2016-10-06 |
| EP3016464B1 (en) | 2020-12-02 |
| CN104349378A (zh) | 2015-02-11 |
| CA2919354A1 (en) | 2015-01-29 |
| JP6239752B2 (ja) | 2017-11-29 |
| HK1223770A1 (zh) | 2017-08-04 |
| US20160212647A1 (en) | 2016-07-21 |
| EP3016464A1 (en) | 2016-05-04 |
| US9769690B2 (en) | 2017-09-19 |
| CN104349378B (zh) | 2019-06-14 |
| EP3016464A4 (en) | 2016-06-15 |
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