CN108282889B - Method for improving resource utilization rate in distributed system - Google Patents
Method for improving resource utilization rate in distributed system Download PDFInfo
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- CN108282889B CN108282889B CN201710008945.1A CN201710008945A CN108282889B CN 108282889 B CN108282889 B CN 108282889B CN 201710008945 A CN201710008945 A CN 201710008945A CN 108282889 B CN108282889 B CN 108282889B
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- 238000000034 method Methods 0.000 title claims abstract description 11
- 230000005540 biological transmission Effects 0.000 claims abstract description 51
- 238000004891 communication Methods 0.000 claims description 11
- 238000010586 diagram Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/541—Allocation or scheduling criteria for wireless resources based on quality criteria using the level of interference
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
- H04B7/0621—Feedback content
- H04B7/0626—Channel coefficients, e.g. channel state information [CSI]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0473—Wireless resource allocation based on the type of the allocated resource the resource being transmission power
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- Signal Processing (AREA)
- Quality & Reliability (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The application discloses a method for improving resource utilization rate in a distributed system, which comprises the following steps: when a base station configures a channel state information reference symbol (CSI-RS) resource of a transmission point, the CSI-RS resource of an adjacent transmission point is configured by adopting a mode of partially performing zero power configuration and partially performing non-zero power configuration; the base station judges the transmission point of the UE according to the signal energy of the UE received by the transmission point; the base station judges the interference of the UE by the adjacent transmission points according to the signal energy of the UE received by the adjacent transmission points; and if the interference of the adjacent transmission point to the UE is greater than a set threshold, the base station allocates the CSI-RS resource of the adjacent transmission point for zero power configuration to the UE, otherwise, allocates the CSI-RS resource of the adjacent transmission point for non-zero power configuration to the UE. By applying the technical scheme disclosed by the application, the interference can be avoided, and the CSI-RS resource is saved.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to a method for improving resource utilization in a distributed system.
Background
In some distributed communication systems, a base band processing unit (BBU) typically has multiple Radio Remote Units (RRUs). The downlink data of the BBU is sent by a plurality of RRUs, and the data received by the RRUs are also submitted to the BBU for processing. Fig. 1 is a schematic diagram of a conventional distributed communication system.
In order to improve the transmission capability of the communication system, a large-scale antenna is adopted for data transmission in 5G, and in order to save resources, a channel state information reference symbol (CSI-RS) is adopted for channel measurement. According to the prior art, in LTE multi-antenna transmission, two ports of CSI-RSs have 20 modes, four ports of CSI-RSs have 10 modes, and 8 ports of CSI-RSs have 5 modes.
According to the prior art, after a transmission point configures CSI-RS resources, in order to avoid interference, adjacent transmission points of the transmission point perform zero power transmission at corresponding resource positions, so that CSI-RSs of the adjacent transmission points avoid interference with each other, which results in waste of some resources.
Disclosure of Invention
The application provides a method for improving resource utilization rate in a distributed system, so as to avoid interference and save CSI-RS resources.
The application discloses a method for improving resource utilization rate in a distributed system, which comprises the following steps:
when a base station configures a channel state information reference symbol (CSI-RS) resource of a transmission point, the CSI-RS resource of an adjacent transmission point is configured by adopting a mode of partially performing zero power configuration and partially performing non-zero power configuration;
the base station judges the transmission point of the UE according to the signal energy of the UE received by the transmission point;
the base station judges the interference of the UE by the adjacent transmission points according to the signal energy of the UE received by the adjacent transmission points;
and if the interference of the adjacent transmission point to the UE is greater than a set threshold, the base station allocates the CSI-RS resource of the adjacent transmission point for zero power configuration to the UE, otherwise, allocates the CSI-RS resource of the adjacent transmission point for non-zero power configuration to the UE.
Preferably, in the distributed communication system, the transmission point is a radio remote unit RRU.
According to the technical scheme, the method provided by the application reduces the configuration of the zero-power CSI-RS in the distributed communication system, not only can avoid interference, but also can save CSI-RS resources.
Drawings
FIG. 1 is a schematic diagram of a prior art distributed communication system;
fig. 2 is a schematic diagram of two UEs belonging to a remote RRU according to the present invention;
FIG. 3 is a flow chart of a method for improving resource utilization in a distributed system according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is further described in detail below by referring to the accompanying drawings and examples.
The invention proposes: in a distributed communication system, when each transmission point performs CSI-RS zero-power point configuration, zero-power configuration can be performed on part of CSI-RS positions of adjacent transmission points, and zero-power configuration is not performed on part of CSI-RS positions. By judging the position of the UE relative to the transmission point and reasonably configuring the CSI-RS, the interference can be avoided and the resources can be saved.
In a distributed system, the coverage area of which RRU the UE belongs to can be known according to the signal energy of the user measured by each RRU.
Assume that both UE1 and UE2 belong to the coverage of RRU1, as shown in fig. 2. Two CSI-RS configurations, denoted CSI-RS1 and CSI-RS2, are allocated in RRU 1. When the CSI-RS zero power configuration is performed in the RRU2, the zero power configuration is performed on the position of the CSI-RS1, and the non-zero power configuration is performed on the position of the CSI-RS 2.
In fig. 2, the UE1 and the UE2 belong to the RRU1, and the received power of the RRU2 to the UE1 is lower than a threshold value, so that the interference of a signal of the RRU2 to the UE1 is small, and therefore, the CSI-RS2 can be allocated to the UE1, and even if the RRU2 does not perform zero power allocation at the CSI-RS2, the channel measurement of the UE1 is not affected. On the other hand, the received power of the RRU2 for the UE2 is higher than the threshold, which indicates that the RRU2 has a large interference to the UE2, so to avoid the interference, the CSI-RS1 needs to be allocated to the UE2, and since the RRU2 is already configured with zero power at the position of the CSI-RS1, the interference to the channel measurement of the UE2 can be avoided.
Through the CSI-RS zero power configuration, the interference of adjacent transmission points can be avoided, and resources can be saved.
The present invention may be applied to distributed communication systems such as high-speed railways, hot spots, venues, and the like.
Fig. 3 is a flowchart of a method for improving resource utilization in a distributed system according to the present invention, which includes the following steps:
step 1: when the base station configures the CSI-RS resource of the transmission point, the CSI-RS resource of the adjacent transmission point is configured by adopting a mode of partially performing zero power configuration and partially performing non-zero power configuration.
Step 2: and the base station judges the transmission point of the UE according to the signal energy of the UE received by the transmission point.
And step 3: and the base station judges the interference of the UE by the adjacent transmission points according to the signal energy of the UE received by the adjacent transmission points.
And 4, step 4: and if the interference of the adjacent transmission point to the UE is greater than a set threshold, the base station allocates the CSI-RS resource of the adjacent transmission point for zero power configuration to the UE, otherwise, allocates the CSI-RS resource of the adjacent transmission point for non-zero power configuration to the UE.
In the distributed communication system, the transmission point is an RRU.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the scope of protection of the present application.
Claims (2)
1. A method for increasing resource utilization in a distributed system, comprising:
when a base station configures a channel state information reference symbol (CSI-RS) resource of a transmission point, the CSI-RS resource of an adjacent transmission point is configured by adopting a mode of partially performing zero power configuration and partially performing non-zero power configuration;
the base station judges the transmission point of the UE according to the signal energy of the UE received by the transmission point;
the base station judges the interference of the UE by the adjacent transmission points according to the signal energy of the UE received by the adjacent transmission points;
and if the interference of the adjacent transmission point to the UE is greater than a set threshold, the base station allocates the CSI-RS resource of the adjacent transmission point for zero power configuration to the UE, otherwise, allocates the CSI-RS resource of the adjacent transmission point for non-zero power configuration to the UE.
2. The method of claim 1, wherein:
in the distributed communication system, the transmission point is a radio remote unit RRU.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710008945.1A CN108282889B (en) | 2017-01-06 | 2017-01-06 | Method for improving resource utilization rate in distributed system |
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| CN201710008945.1A CN108282889B (en) | 2017-01-06 | 2017-01-06 | Method for improving resource utilization rate in distributed system |
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| CN108282889A CN108282889A (en) | 2018-07-13 |
| CN108282889B true CN108282889B (en) | 2020-08-28 |
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| CN108848524A (en) * | 2018-07-20 | 2018-11-20 | 徐州海派科技有限公司 | Energy consumption appraisal procedure under mobile cloud environment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103037395A (en) * | 2011-09-29 | 2013-04-10 | 华为技术有限公司 | Method for configuring channel state information-reference signal (CSI-RS) for multiple access points, base station and access points |
| CN103068046A (en) * | 2011-10-18 | 2013-04-24 | 中兴通讯股份有限公司 | Uplink control information resource distribution method, apparatus and base station thereof |
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| CN103339982B (en) * | 2011-02-09 | 2016-12-21 | 瑞典爱立信有限公司 | The efficient use of the reference marks resource in the isomery cell deployment of layering |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103037395A (en) * | 2011-09-29 | 2013-04-10 | 华为技术有限公司 | Method for configuring channel state information-reference signal (CSI-RS) for multiple access points, base station and access points |
| CN103068046A (en) * | 2011-10-18 | 2013-04-24 | 中兴通讯股份有限公司 | Uplink control information resource distribution method, apparatus and base station thereof |
Non-Patent Citations (1)
| Title |
|---|
| "Interference measurement for CoMP";MediaTek Inc.;《3GPP TSG RAN WG1 Meeting #68bis R1-121180》;20120330;第4节 * |
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