CN103840868A - Methods for indicating and feeding back channel quality information, devices and system - Google Patents
Methods for indicating and feeding back channel quality information, devices and system Download PDFInfo
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Abstract
The invention discloses methods for indicating and feeding back channel quality information, devices and a system, so that a problem that channel quality information of a vertical dimension can not be fed back in the prior art can be solved. According to the embodiment of the invention, the indication method comprises the following steps that: a network side configures each receiving terminal with at least two kinds of measurement resources that respectively carry measurement signals for horizontal dimension channel measurement and vertical dimension channel measurement; and corresponding receiving terminals are informed of configuration information corresponding to the configured measurement resources, wherein the configuration information carries indication information and the indication information is used for indicating the receiving terminals to carry out horizontal dimension channel measurement or vertical dimension channel measurement. According to the embodiment of the invention, channel quality information of the vertical dimension can be fed back, so that the base station can fully utilize three-dimensional space channel quality information to carry out dispatching. Therefore, the system capacity is improved.
Description
Technical field
The present invention relates to wireless communication technology field, particularly method, the equipment and system of a kind of indication and feedback channel quality information.
Background technology
In radio communication, in the time that the channel quality of up/down row channel there are differences, need subscriber equipment (UserEquipment, UE) channel quality information of feedback of down channel, channel quality information generally comprises channel quality indication (Channel Quality Indicator, CQI) information, pre-coding matrix indication (PrecodingMatrix Indicator, PMI) information and order indication (Rank Indication, RI) information etc.The process of indication and feedback channel quality information is shown in Figure 1, comprises the following steps:
Step 11, base station are that each UE is configured for the measurement pilot frequency of carrying out channel quality measurement;
The channel quality information measuring is reported base station by step 14, UE, so that dispatch this UE accordingly according to the channel quality information of UE feedback base station.
In current communication system, the transmission of channel quality information can only be applied in linear array antenna, and under this applied environment, UE only needs the channel quality information of feedback level dimension.Figure 2 shows that typical One-Dimensional Water plane antenna arrangement mode in current communication network, wherein, d
hrepresent the spacing between each horizontal dimension antenna.And for three-dimensional beam shaping, because the environmental difference of vertical dimension channel and horizontal dimension channel is larger, UE not only needs the channel quality information of feedback level dimension, also need to feed back the channel quality information of vertical dimension.Figure 3 shows that the structural representation of the aerial array of two-dimensional arrangements, wherein d
hrepresent the spacing between each horizontal dimension antenna, d
vrepresent the spacing between each vertical dimension antenna.
In sum, at present can only feedback level the channel quality information of dimension, cannot feed back the channel quality information of vertical dimension, can not make full use of three-dimensional spatial information, thereby limit the application of three-dimensional beam shaping.
Summary of the invention
The embodiment of the present invention provides method, the equipment and system of a kind of indication and feedback channel quality information, for the channel quality information of can only feedback level tieing up that solves that prior art exists, cannot feed back the problem of the channel quality information of vertical dimension.
The embodiment of the present invention provides a kind of method of indicating channel quality information, and the method comprises:
Network side is that resource is measured at least two kinds of each receiving terminal configurations, and carrying is for the measuring-signal of horizontal dimension channel measurement and vertical dimension channel measurement respectively;
Described network side notifies configuration information corresponding the measurement resource of configuration to corresponding receiving terminal, wherein, in described configuration information, carries indication information, and described indication information is used to indicate this receiving terminal and carries out horizontal dimension channel measurement or vertical dimension channel measurement.
The embodiment of the present invention provides a kind of method of feedback channel quality information, and the method comprises:
The indication information carrying in the configuration information that receiving terminal sends according to the network side receiving, carries out corresponding channel quality measurement, obtains channel quality information; Wherein, described indication information is used to indicate this receiving terminal and carries out horizontal dimension channel measurement or vertical dimension channel measurement;
The channel quality information feedback obtaining is given described network side by described receiving terminal.
The embodiment of the present invention provides a kind of network equipment, and this equipment comprises:
Configuration module, is used at least two kinds of each receiving device configurations to measure resource, and carrying is for the measuring-signal of horizontal dimension channel measurement and vertical dimension channel measurement respectively;
Sending module, for configuration information corresponding the measurement resource of configuration is notified to corresponding receiving device, wherein, in described configuration information, carry indication information, described indication information is used to indicate this receiving device and carries out horizontal dimension channel measurement or vertical dimension channel measurement.
The embodiment of the present invention provides a kind of receiving device, and this receiving device comprises:
Measurement module, the indication information carrying for the configuration information sending according to the network equipment receiving, carries out corresponding channel quality measurement, obtains channel quality information; Wherein, described indication information is used to indicate this receiving device and carries out horizontal dimension channel measurement or vertical dimension channel measurement;
Feedback module, for giving described network equipment by the channel quality information feedback obtaining.
The embodiment of the present invention provides a kind of communication system,, this system comprises:
Network equipment, is used at least two kinds of each receiving device configurations to measure resource, and carrying is for the measuring-signal of horizontal dimension channel measurement and vertical dimension channel measurement respectively; And configuration information corresponding the measurement resource of configuration is notified to corresponding receiving device, wherein, in described configuration information, carrying indication information, described indication information is used to indicate this receiving device and carries out horizontal dimension channel measurement or vertical dimension channel measurement;
Receiving device, the indication information carrying for the configuration information sending according to the network equipment receiving, carries out corresponding channel quality measurement, obtains channel quality information; And give described network equipment by the channel quality information feedback obtaining.
Embodiment of the present invention network side is that resource is measured at least two kinds of each receiving terminal configurations, and carrying is for the measuring-signal of horizontal dimension channel measurement and vertical dimension channel measurement respectively, and configuration information corresponding the measurement resource of configuration is notified to corresponding receiving terminal, wherein, in this configuration information, carry indication information, and indication information is used to indicate this receiving terminal and carries out horizontal dimension channel measurement or vertical dimension channel measurement, so that receiving terminal is receiving after configuration information, can be according to the indication of indication information to the channel quality information of network side feedback level dimension and the channel quality information of vertical dimension, thereby realize the channel quality information of feedback vertical dimension, making base station can make full use of three dimensions channel quality information dispatches, improve power system capacity.
Accompanying drawing explanation
Fig. 1 is indication and the method flow schematic diagram of feedback channel quality information in background technology;
Fig. 2 is One-Dimensional Water plane antenna arrangement mode schematic diagram in background technology;
Fig. 3 is the structural representation of the aerial array of two-dimensional arrangements in background technology;
Fig. 4 is the method flow schematic diagram of embodiment of the present invention indicating channel quality information;
Fig. 5 is the method flow schematic diagram of embodiment of the present invention feedback channel quality information;
Fig. 6 is the structural representation of embodiment of the present invention network equipment;
Fig. 7 is the structural representation of embodiment of the present invention receiving device;
Fig. 8 is the structural representation of embodiment of the present invention communication system;
Fig. 9 is the interaction flow schematic diagram of embodiment of the present invention communication system.
Embodiment
The embodiment of the present invention is by measuring resource at least two kinds of each receiving terminal configurations, and carrying is for the measuring-signal of horizontal dimension channel measurement and vertical dimension channel measurement respectively; And configuration information corresponding the measurement resource of configuration is notified to corresponding receiving terminal, wherein, in this configuration information, carry indication information, and indication information is used to indicate this receiving terminal and carries out horizontal dimension channel measurement or vertical dimension channel measurement, so that receiving terminal is receiving after configuration information, the channel quality information that can tie up to network side feedback level according to the indication of indication information and the channel quality information of vertical dimension, thus realize the channel quality information that feeds back vertical dimension.
Below in conjunction with Figure of description, the embodiment of the present invention is described in further detail.
Shown in Figure 4, the method for a kind of indicating channel quality information that the embodiment of the present invention provides, the method comprises the following steps:
Further, in this configuration information, except carrying indication information, also comprise: positional information, transmission cycle and the sub-frame offset etc. of measuring resource.
Further, indication information can adopt 1 Bit data to represent, for example, if the value of indication information is 0, represents to carry out horizontal dimension channel quality measurement; If the value of indication information is 1, represent to carry out vertical dimension channel quality measurement.
Certainly, indication information also can adopt other modes to represent, as long as can indicate corresponding receiving terminal to carry out the channel quality measurement of horizontal dimension or indicate this receiving terminal to carry out vertical dimension channel quality measurement, but need to allow in advance terminal know what implication is each information represent respectively.
Preferably, measuring-signal is the downlink reference signal defining in 3GPP standard, as channel state information reference signals (Channel State Information-Reference Signals, CSI-RS), exclusive reference signal in community (Cell-specific Reference Signals, CRS) etc.
Further, in step 41, network side is the measurement resource that each receiving terminal is configured for respectively horizontal dimension channel measurement and vertical dimension channel measurement, further comprises following two kinds of modes:
It is the measurement resource that each receiving terminal is configured for respectively horizontal dimension channel measurement and vertical dimension channel measurement that mode one, network side adopt same pilot frequency design (pattern);
It is the measurement resource that each receiving terminal is configured for respectively horizontal dimension channel measurement and vertical dimension channel measurement that mode two, network side adopt different pilot frequency designs.
Further, in step 42, network side notifies configuration information to corresponding receiving terminal, further comprises:
Network side sends configuration information by high-level signaling or descending control signaling (Downlink Control Information, DCI).
Wherein, high-level signaling can be Radio Resource control (Radio Resource Control, RRC) or media access control (Media Access Control, MAC) signaling.
Shown in Figure 5, the method for a kind of feedback channel quality information that the embodiment of the present invention provides, the method comprises the following steps:
The indication information carrying in the configuration information that step 51, receiving terminal send according to the network side receiving, carry out corresponding channel quality measurement, obtain channel quality information, wherein, indication information is used to indicate this receiving terminal and carries out horizontal dimension channel measurement or vertical dimension channel measurement;
Further, if horizontal dimension channel quality measurement is carried out in indication information indication, in step 51, receiving terminal carries out corresponding channel quality measurement, further comprises:
Receiving terminal is selected PMI from horizontal dimension codebook set, and calculates corresponding CQI.
Further, if horizontal dimension channel quality measurement is carried out in indication information indication, in step 51, receiving terminal carries out corresponding channel quality measurement, further comprises:
Receiving terminal is selected PMI from vertical dimension codebook set, and calculates corresponding CQI.
It should be noted that, codebook set comprises horizontal dimension codebook set and vertical dimension codebook set.
Preferably, horizontal dimension codebook set can comprise in 2 antenna codebook set in Rel-10,4 antenna codebook set and 8 antenna codebook set partly or entirely; Vertical dimension codebook set can comprise in 2 antenna codebook set in Rel-10,4 antenna codebook set and 8 antenna codebook set partly or entirely.
Wherein, 2 antenna codebook set in Rel-10,4 antenna codebook set and 8 antenna codebook set specifically can, referring to 3GPP TS 36.211 agreements, not repeat them here.
It should be noted that, the code word comprising in horizontal dimension codebook set and vertical dimension codebook set, can be all identical, also can part identical, also can be entirely not identical.
The following describes the mutual implementation method of network side and receiving terminal, specific as follows:
First, network side is that each receiving terminal is that resource is measured at least two kinds of each receiving terminal configurations, carrying is for the measuring-signal of horizontal dimension channel measurement and vertical dimension channel measurement respectively, and notify to corresponding receiving terminal measuring configuration information corresponding to resource, wherein, in configuration information, carry the indication information that is used to indicate this receiving terminal and carries out horizontal dimension channel measurement or vertical dimension channel measurement.
Then, receiving terminal is receiving after the configuration information of network side transmission, and determine and need to tie up channel quality information to network side feedback level according to the indication information carrying in configuration information, or vertical dimension channel quality information, concrete:
If horizontal dimension channel measurement is carried out in indication information indication, receiving terminal is selected PMI from horizontal dimension codebook set, and calculates corresponding CQI;
If vertical dimension channel measurement is carried out in indication information indication, receiving terminal is selected PMI from vertical dimension codebook set, and calculates corresponding CQI;
Receiving terminal by the channel quality information feedback measuring to network side.
Finally, network side, receiving after the horizontal dimension channel measurement information and vertical dimension channel measurement information of receiving terminal feedback, is dispatched accordingly.
The method handling process of the embodiment of the present invention can realize with software program, and this software program can be stored in storage medium, in the time that the software program of storage is called, carries out said method step.
Based on same inventive concept, a kind of network equipment is also provided in the embodiment of the present invention, because the principle that this equipment is dealt with problems is similar to the method for above-mentioned indicating channel quality information, therefore the enforcement of this equipment can be referring to the enforcement of method, repeats part and repeat no more.
A kind of network equipment shown in Figure 6, the embodiment of the present invention provides, comprising:
Sending module 62, for configuration information corresponding the measurement resource of configuration is notified to corresponding receiving device, wherein, in configuration information, carry indication information, and indication information is used to indicate this receiving device and carries out horizontal dimension channel measurement or vertical dimension channel measurement.
Preferably, measuring-signal is the downlink reference signal defining in 3GPP standard, as CSI-RS, CRS etc.
Further, configuration module 61 specifically for:
Adopting same pilot frequency design is the measurement resource that each receiving device is configured for respectively horizontal dimension channel measurement and vertical dimension channel measurement.
Further, configuration module 61 specifically for:
Adopting different pilot frequency designs is the measurement resource that each receiving device is configured for respectively horizontal dimension channel measurement and vertical dimension channel measurement.
Further, sending module 62 specifically for:
Send configuration information by high-level signaling or descending control signaling.
Based on same inventive concept, a kind of receiving device is also provided in the embodiment of the present invention, because the principle that this receiving device is dealt with problems is similar to the method for above-mentioned feedback channel quality information, therefore the enforcement of this receiving device can be referring to the enforcement of method, repeats part and repeat no more.
A kind of receiving device shown in Figure 7, the embodiment of the present invention provides, comprising:
Further, measurement module 71 specifically for:
If horizontal dimension channel quality measurement is carried out in indication information indication, from horizontal dimension codebook set, select PMI, and calculate corresponding CQI.
Further, measurement module 71 specifically for:
If vertical dimension channel quality measurement is carried out in indication information indication, from vertical dimension codebook set, select PMI, and calculate corresponding CQI.
A kind of communication system shown in Figure 8, the embodiment of the present invention provides, comprising:
Receiving device 82, the indication information carrying for the configuration information sending according to the network equipment 81 receiving, carries out corresponding channel quality measurement, obtains channel quality information; And by the channel quality information feedback obtaining to network equipment 81.
Below take in LTE-A system as example, illustrate the reciprocal process of embodiment of the present invention communication system transmission of channel quality information, shown in Figure 9, the present embodiment comprises the following steps:
Preferably, every kind of measuring-signal of measuring resource bearing is the downlink reference signal defining in 3GPP standard;
Further, measure the corresponding CSI-RS pattern of resource for every kind, measure resources for these two kinds and come from the configuration of same base station, can separate configurations, wherein, measuring resource for every kind can corresponding same CSI-RS pattern, CSI-RS pattern that also can be corresponding different.
Wherein, in configuration information corresponding to channel measurement resource, can adopt 1 Bit data to represent indication information, if this Bit data is 0, represent for horizontal dimension channel quality measurement; If this Bit data is 1, represent for vertical dimension channel quality measurement.
What step 94, UE judged the indication of indication information in configuration information is horizontal dimension channel measurement or vertical dimension channel measurement;
From horizontal dimension codebook set, select a PMI if the value of step 95 indication information is 0, UE, and calculate other channel quality information (as corresponding CQI etc.), to obtain horizontal dimension channel quality information.
From vertical dimension codebook set, select a PMI if the value of step 96 indication information is 1, UE, and calculate other channel quality information (as corresponding CQI etc.), to obtain vertical dimension channel quality information.
Embodiment of the present invention network side is that resource is measured at least two kinds of each receiving terminal configurations, and carrying is for the measuring-signal of horizontal dimension channel measurement and vertical dimension channel measurement respectively, and configuration information corresponding the measurement resource of configuration is notified to corresponding receiving terminal, wherein, in this configuration information, carry indication information, and indication information is used to indicate this receiving terminal and carries out horizontal dimension channel measurement or vertical dimension channel measurement, so that receiving terminal is receiving after configuration information, can be according to the indication of indication information to the channel quality information of network side feedback level dimension and the channel quality information of vertical dimension, thereby realize the channel quality information of feedback vertical dimension, making base station can make full use of three dimensions channel quality information dispatches, improve power system capacity.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt complete hardware implementation example, completely implement software example or the form in conjunction with the embodiment of software and hardware aspect.And the present invention can adopt the form at one or more upper computer programs of implementing of computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) that wherein include computer usable program code.
The present invention is with reference to describing according to flow chart and/or the block diagram of the method for the embodiment of the present invention, equipment (system) and computer program.Should understand can be by the flow process in each flow process in computer program instructions realization flow figure and/or block diagram and/or square frame and flow chart and/or block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, the instruction that makes to carry out by the processor of computer or other programmable data processing device produces the device for realizing the function of specifying at flow process of flow chart or multiple flow process and/or square frame of block diagram or multiple square frame.
These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, the instruction that makes to be stored in this computer-readable memory produces the manufacture that comprises command device, and this command device is realized the function of specifying in flow process of flow chart or multiple flow process and/or square frame of block diagram or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make to carry out sequence of operations step to produce computer implemented processing on computer or other programmable devices, thereby the instruction of carrying out is provided for realizing the step of the function of specifying in flow process of flow chart or multiple flow process and/or square frame of block diagram or multiple square frame on computer or other programmable devices.
Although described the preferred embodiments of the present invention, once those skilled in the art obtain the basic creative concept of cicada, can make other change and modification to these embodiment.So claims are intended to be interpreted as comprising preferred embodiment and fall into all changes and the modification of the scope of the invention.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (17)
1. a method for indicating channel quality information, is characterized in that, the method comprises:
Network side is that resource is measured at least two kinds of each receiving terminal configurations, and carrying is for the measuring-signal of horizontal dimension channel measurement and vertical dimension channel measurement respectively;
Described network side notifies configuration information corresponding the measurement resource of configuration to corresponding receiving terminal, wherein, in described configuration information, carries indication information, and described indication information is used to indicate this receiving terminal and carries out horizontal dimension channel measurement or vertical dimension channel measurement.
2. the method for claim 1, is characterized in that, described measuring-signal is that third generation partner plans the downlink reference signal defining in 3GPP standard.
3. method as claimed in claim 2, is characterized in that, described network side is that resource is measured in two kinds of each receiving terminal configurations, further comprises:
It is the measurement resource that each receiving terminal is configured for respectively horizontal dimension channel measurement and vertical dimension channel measurement that described network side adopts same pilot frequency design.
4. method as claimed in claim 2, is characterized in that, described network side is that resource is measured in two kinds of each receiving terminal configurations, further comprises:
It is the measurement resource that each receiving terminal is configured for respectively horizontal dimension channel measurement and vertical dimension channel measurement that described network side adopts different pilot frequency designs.
5. the method as described in as arbitrary in claim 1 ~ 4, is characterized in that, described network side notifies described configuration information to corresponding receiving terminal, further comprises:
Described network side sends described configuration information by high-level signaling or descending control signaling.
6. a method for feedback channel quality information, is characterized in that, the method comprises:
The indication information carrying in the configuration information that receiving terminal sends according to the network side receiving, carry out corresponding channel quality measurement, obtain channel quality information, wherein, described indication information is used to indicate this receiving terminal and carries out horizontal dimension channel measurement or vertical dimension channel measurement;
The channel quality information feedback obtaining is given described network side by described receiving terminal.
7. method as claimed in claim 6, is characterized in that, if horizontal dimension channel quality measurement is carried out in the indication of described indication information, described receiving terminal carries out corresponding channel quality measurement and further comprises:
Described receiving terminal is selected pre-coding matrix indication PMI from horizontal dimension codebook set, and calculates corresponding channel quality indicator (CQI).
8. method as claimed in claim 6, is characterized in that, if vertical dimension channel quality measurement is carried out in the indication of described indication information, described receiving terminal carries out corresponding channel quality measurement and further comprises:
Described receiving terminal is selected PMI from vertical dimension codebook set, and calculates corresponding CQI.
9. a network equipment, is characterized in that, this equipment comprises:
Configuration module, is used at least two kinds of each receiving device configurations to measure resource, and carrying is for the measuring-signal of horizontal dimension channel measurement and vertical dimension channel measurement respectively;
Sending module, for configuration information corresponding the measurement resource of configuration is notified to corresponding receiving device, wherein, in described configuration information, carry indication information, described indication information is used to indicate this receiving device and carries out horizontal dimension channel measurement or vertical dimension channel measurement.
10. network equipment as claimed in claim 9, is characterized in that, described measuring-signal is the downlink reference signal defining in 3GPP standard.
11. network equipments as claimed in claim 10, is characterized in that, described configuration module specifically for:
Adopting same pilot frequency design is the measurement resource that each receiving device is configured for respectively horizontal dimension channel measurement and vertical dimension channel measurement.
12. network equipments as claimed in claim 10, is characterized in that, described configuration module specifically for:
Adopting different pilot frequency designs is the measurement resource that each receiving device is configured for respectively horizontal dimension channel measurement and vertical dimension channel measurement.
13. network equipments as described in as arbitrary in claim 9 ~ 12, is characterized in that, described sending module specifically for:
Send described configuration information by high-level signaling or descending control signaling.
14. 1 kinds of receiving devices, is characterized in that, this receiving device comprises:
Measurement module, the indication information carrying for the configuration information sending according to the network equipment receiving, carries out corresponding channel quality measurement, obtains channel quality information; Wherein, described indication information is used to indicate this receiving device and carries out horizontal dimension channel measurement or vertical dimension channel measurement;
Feedback module, for giving described network equipment by the channel quality information feedback obtaining.
15. receiving devices as claimed in claim 14, is characterized in that, described measurement module specifically for:
If horizontal dimension channel quality measurement is carried out in described indication information indication, from horizontal dimension codebook set, select PMI, and calculate corresponding CQI.
16. receiving devices as claimed in claim 14, is characterized in that, described measurement module specifically for:
If vertical dimension channel quality measurement is carried out in described indication information indication, from vertical dimension codebook set, select PMI, and calculate corresponding CQI.
17. 1 kinds of communication systems, is characterized in that, this system comprises:
Network equipment, is used at least two kinds of each receiving device configurations to measure resource, and carrying is for the measuring-signal of horizontal dimension channel measurement and vertical dimension channel measurement respectively; And configuration information corresponding the measurement resource of configuration is notified to corresponding receiving device, wherein, in described configuration information, carrying indication information, described indication information is used to indicate this receiving device and carries out horizontal dimension channel measurement or vertical dimension channel measurement;
Receiving device, the indication information carrying for the configuration information sending according to the network equipment receiving, carries out corresponding channel quality measurement, obtains channel quality information; And give described network equipment by the channel quality information feedback obtaining.
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