Method for measuring discovery signal, base station, and terminal

• US 9,769,690 B2
• Filed: 06/19/2014
• Issued: 09/19/2017
• Est. Priority Date: 07/26/2013
• Status: Active Grant

• Current Assignee: Advanced Standard Communication LLC
• Original Assignee: ZTE Corporation
• Inventors: Mo, Linmei, Zhao, Yajun, Xu, Hanqing, Gao, Yonghong, Cao, Aijun
• Primary Examiner(s): Kasraian, Allahyar
• Application Number:
  US15/006,493
• Publication Number:
  US 20160212647A1
• Time in Patent Office: 1,188 Days
• Field of Search: 455450-455, 370329, 370345-350
• CPC Class Codes: H04W 24/08 Testing, supervising or monitoring using real traffic
• CPC Class Codes: H04W 48/12 using downlink control channel
• CPC Class Codes: H04W 48/16 Discovering, processing access restriction or access information
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A discovery signal measurement method, base station and terminal, wherein the method includes: a base station determining measurement patterns used by different terminals for measuring discovery signals according to transmission patterns of discovery signals; the base station configuring measurement patterns corresponding to the terminals for the terminals; the base station transmitting the discovery signals in cells corresponding to the transmission pattern according to the transmission patterns. The method, base station and terminal according to the embodiment of the present invention provide a definite solution for configuring measurement patterns of discovery signals.

Claims

1. A measurement method for discovery signals, comprising:

a base station determining measurement patterns used for measuring discovery signals for different terminals according to transmission patterns of discovery signals of one or more cells, comprising;

determining the transmission pattern of the discovery signals in a to-be-measured cell is configured as a minimum transmission gap being T, a transmission cycle being N*T, the number of bursts transmitted in each cycle being L, the number of subframes carrying the discovery signals in each burst being M, and the gap between adjacent bursts being P*T, for each terminal, configuring the number of bursts measured within each cycle as L1, the number of subframes carrying the discovery signals measured in each burst as M1, and reporting one measurement result after measuring for S cycles, wherein L1 is an arbitrary integer less than or equal to L, and M1 is an arbitrary integer less than or equal to M;

the base station configuring measurement patterns corresponding to the terminals for different terminals; and

the base station transmitting the discovery signals in cells corresponding to the transmission patterns, and the terminals measuring the discovery signals according to the configured measurement patterns.

2. The measurement method of claim 1, wherein, before the step of the base station determining measurement patterns used for measuring discovery signals for different terminals according to transmission patterns of discovery signals of one or more cells, the method further comprises:

the base station determining the transmission patterns through any of following methods;

the base station determining independently;

or,

receiving a configuration signaling sent by a central node base station or other base stations other than the central node base station, configuring the transmission patterns according to the configuration signaling, wherein the transmission patterns are centrally determined by the central node base station, or determined coordinately by the central node base station and other base stations other than the central node base station.

3. The measurement method of claim 1, wherein a transmission mode of the discovery signals comprises:

continuously transmitting discovery signals according to a predetermined transmission cycle;

or;

transmitting a predetermined number of bursts in one cycle, and transmitting a predetermined number of subframes carrying the discovery signals in each burst, and a gap between adjacent bursts is a predetermined value.

4. The measurement method of claim 1, wherein, transmission patterns of different cells comply with at least one of following situations:

a transmission pattern corresponding to an activated cell and a transmission pattern corresponding to a dormant cell are the same, and both indicate that the discovery signals are transmitted intermittently;

the transmission pattern corresponding to the activated cell indicates that the discovery signals are transmitted continuously, and the transmission pattern corresponding to the dormant cell indicates that the discovery signals are transmitted intermittently;

the transmission pattern corresponding to the activated cell and the transmission pattern corresponding to the dormant cell are different, and both indicate that the discovery signals are transmitted intermittently; and

transmission patterns of corresponding different cells indicate that starting position offsets of starting to transmit the discovery signals are different.

5. The measurement method of claim 4, wherein, the transmission patterns being different means that at least one of following information in the transmission patterns is different:

a cycle of transmitting discovery signals in a corresponding cell;

the number of bursts transmitted in each cycle;

the number of subframes carrying the discovery signals transmitted in each burst;

a gap between adjacent bursts;

starting position offset of starting to transmit the discovery signals; and

occupied frequency resources and/or sequence resources.

6. The measurement method of claim 1, wherein, the step of the base station determining measurement patterns used for measuring discovery signals for different terminals according to transmission patterns of discovery signals of one or more cells comprises:

the base station determining measurement patterns of different terminals based on measurement needs, wherein the measurement needs comprise qualitative measurement needs and/or quantitative measurement needs.

7. The measurement method of claim 1, wherein, the measurement patterns of the terminals comprise measurement patterns used for measuring discovery signals of one or more cells, and measurement patterns used by the terminals for measuring discovery signals of one cell are a full set or subset of transmission patterns used by the base station for transmitting discovery signals of the cell.

8. A measurement method for discovery signals, comprising:

a terminal receiving a measurement pattern configuration transmitted by a base station for measuring discovery signals, wherein the measurement pattern is determined by the base station according to transmission patterns of discovery signals of one or more cells; and

the terminal measuring the discovery signals based on the measurement pattern;

wherein the measurement pattern configuration transmitted by the base station comprises;

determining the transmission pattern of the discovery signals in a to-be-measured cell is configured as a minimum transmission gap being T, a transmission cycle being N*T, the number of bursts transmitted in each cycle being L, the number of subframes carrying the discovery signals in each burst being M, and the gap between adjacent bursts being P*T, for each terminal, configuring the number of bursts measured within each cycle as L1, the number of subframes carrying the discovery signals measured in each burst as M1, and reporting one measurement result after measuring for S cycles, wherein L1 is an arbitrary integer less than or equal to L, and M1 is an arbitrary integer less than or equal to M.

9. The measurement method of claim 8, wherein, the measurement pattern of the terminal comprises information used for measuring discovery signals of all cells corresponding to the base station.

10. The measurement method of claim 8, wherein, measurement patterns of different terminals comply with at least one of following situations:

in an intra-frequency measurement, measurement patterns of different terminals are the same;

in an inter-frequency measurement, measurement patterns of different terminals are the same;

in the intra-frequency measurement, measurement patterns of different terminals are different, and measured bursts or subframes are staggered from each other in one cycle; and

in the inter-frequency measurement, measured bursts or subframes of the measurement patterns of different terminals in one cycle are staggered from each other.

11. A base station, comprising at least one processor executing a measurement pattern determination module, a measurement pattern configuration module and a discovery signal transmission module, wherein,

the measurement pattern determination module is configured to:

determine measurement patterns used for measuring discovery signals for different terminals according to transmission patterns of discovery signals of one or more cells by;

determining the transmission pattern of the discovery signals in a to-be-measured cell is configured as a minimum transmission gap being T, a transmission cycle being N*T, the number of bursts transmitted in each cycle being L, the number of subframes carrying the discovery signals in each burst being M, and the gap between adjacent bursts being P*T, for each terminal, configuring the number of bursts measured within each cycle as L1, the number of subframes carrying the discovery signals measured in each burst as M1, and reporting one measurement result after measuring for S cycles, wherein L1 is an arbitrary integer less than or equal to L, and M1 is an arbitrary integer less than or equal to M;

the measurement pattern configuration module is configured to;

configure measurement patterns corresponding to the terminals for different terminals; and

the discovery signal transmission module is configured to;

transmit the discovery signals in cells corresponding to the transmission patterns.

12. The base station of claim 11, wherein,

the base station is further configured to determine the transmission pattern through any of following methods:

the base station determining independently;

or,

receiving a configuration signaling sent by a central node base station or other base stations other than the central node base station, configuring the transmission pattern according to the configuration signaling, wherein the transmission pattern is centrally determined by the central node base station, or determined coordinately by the central node base station and other base stations other than the central node base station.

13. The base station of claim 11, wherein, the transmission pattern indicates that a transmission mode of the discovery signal comprises:

continuously transmitting the discovery signals according to a predetermined transmission cycle;

or;

transmitting a predetermined number of bursts in one cycle, transmitting a predetermined number of subframes carrying discovery signals in each burst, and a gap between adjacent bursts is a predetermined value.

14. The base station of claim 11, wherein, transmission patterns of different cells comply with at least one of following situations:

a transmission pattern corresponding to an activated cell and a transmission pattern corresponding to a dormant cell are the same, and both indicate that the discovery signals are transmitted intermittently;

the transmission pattern corresponding to the activated cell indicates that the discovery signals are transmitted continuously, and the transmission pattern corresponding to the dormant cell indicates that the discovery signals are transmitted intermittently;

the transmission pattern corresponding to the activated cell and the transmission pattern corresponding to the dormant cell are different, and both indicate that the discovery signals are transmitted intermittently; and

transmission patterns of corresponding different cells indicate that starting position offsets of starting to transmit the discovery signals are different.

15. The base station of claim 14, wherein, the transmission patterns being different means that at least one of following information in the transmission patterns is different:

a cycle of transmitting discovery signals in a corresponding cell;

the number of bursts transmitted in each cycle;

the number of subframes carrying the discovery signals transmitted in each burst;

a gap between adjacent bursts;

starting position offset of starting to transmit the discovery signals; and

occupied frequency resources and/or sequence resources.

16. The base station of claim 11, wherein, the base station is configured to determine measurement patterns used for measuring discovery signals for different terminals according to transmission patterns of discovery signals of one or more cells in a following way:

determining measurement patterns of the terminals based on measurement needs, wherein the measurement needs comprise qualitative measurement needs and/or quantitative measurement needs.

17. The base station of claim 11, wherein, the measurement patterns of the terminals comprise measurement patterns used for measuring discovery signals of one or more cells, measurement patterns used by the terminals for measuring discovery signals of one cell are a full set or subset of transmission patterns used by the base station for transmitting the discovery signals of the cell.

18. A terminal, comprising at least one processor executing a configuration reception module and a discovery signal measurement module, wherein,

the configuration reception module is configured to:

receive a measurement pattern configuration transmitted by a base station for measuring discovery signals, wherein the measurement pattern is determined by the base station according to transmission patterns of discovery signals of one or more cells; and

the discovery signal measurement module is configured to;

measure discovery signals based on the measurement patterns;

wherein the measurement pattern configuration transmitted by the base station comprises;

determining the transmission pattern of the discovery signals in a to-be-measured cell is configured as a minimum transmission gap being T, a transmission cycle being N*T, the number of bursts transmitted in each cycle being L, the number of subframes carrying the discovery signals in each burst being M, and the gap between adjacent bursts being P*T, configuring the number of bursts measured within each cycle as L1, the number of subframes carrying the discovery signals measured in each burst as M1, and reporting one measurement result after measuring for S cycles, wherein L1 is an arbitrary integer less than or equal to L, and M1 is an arbitrary integer less than or equal to M.

19. The terminal of claim 18, wherein, the measurement patterns of the terminals comprise information used for measuring discovery signals of all cells corresponding to the base station;

or

the measurement patterns of different terminals comply with at least one of following situations;

in an intra-frequency measurement, measurement patterns of different terminals are the same;

in an inter-frequency measurement, measurement patterns of different terminals are the same;

in the intra-frequency measurement, measurement patterns of different terminals are different, measured bursts or subframes in one cycle are staggered from each other; and

in the inter-frequency measurement, measured bursts or subframes of the measurement patterns of different terminals in one cycle are staggered from each other.