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CN101674655A - Method and system for acquiring information of uplink channel and downlink channel - Google Patents

Method and system for acquiring information of uplink channel and downlink channel Download PDF

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Publication number
CN101674655A
CN101674655A CN200910179957A CN200910179957A CN101674655A CN 101674655 A CN101674655 A CN 101674655A CN 200910179957 A CN200910179957 A CN 200910179957A CN 200910179957 A CN200910179957 A CN 200910179957A CN 101674655 A CN101674655 A CN 101674655A
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China
Prior art keywords
information
channel
base station
terminal
uplink
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Pending
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CN200910179957A
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Chinese (zh)
Inventor
米德忠
夏树强
左志松
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ZTE Corp
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ZTE Corp
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Priority to CN200910179957A priority Critical patent/CN101674655A/en
Publication of CN101674655A publication Critical patent/CN101674655A/en
Priority to PCT/CN2010/074648 priority patent/WO2010145596A1/en
Pending legal-status Critical Current

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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
    • H04B7/0413—MIMO systems
    • H04B7/0426—Power distribution
    • H04B7/0434—Power distribution using multiple eigenmodes
    • 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
    • H04B7/0617—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 for beam forming
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0204—Channel estimation of multiple channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L25/03343—Arrangements at the transmitter end
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/0398—Restoration of channel reciprocity
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L2025/0335—Arrangements for removing intersymbol interference characterised by the type of transmission
    • H04L2025/03426—Arrangements for removing intersymbol interference characterised by the type of transmission transmission using multiple-input and multiple-output channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L2025/03777—Arrangements for removing intersymbol interference characterised by the signalling
    • H04L2025/03802—Signalling on the reverse channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0224—Channel estimation using sounding signals
    • H04L25/0228—Channel estimation using sounding signals with direct estimation from sounding signals

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Quality & Reliability (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention provides a method for acquiring information of a downlink channel, comprising the following steps: a terminal sends a detection pilot frequency and downlink interference information to abase station; the base station acquires uplink channel status information according to the detection pilot frequency so as to acquire equivalent downlink channel status information, and acquires downlink channel relevant information according to equivalent downlink channel status information and downlink interference information. The invention provides a system for acquiring downlink channel information, and also provides a method for acquiring uplink channel information. The method comprises the following steps: the base station sends the uplink interference channel status information and adownlink pilot frequency to the terminal; the terminal acquires downlink channel status information according to the downlink pilot frequency so as to acquire equivalent uplink channel status information, acquires uplink channel relevant information according to the equivalent uplink channel status information and uplink interference information, and sends the acquired uplink channel quality information to the base station. The invention also provides a system for acquiring the uplink channel information, and acquires channel information by utilizing channel reciprocity, thus reducing uplink expenditure.

Description

A kind of up and descending channel information acquisition methods and system
Technical field
The present invention relates to digital communicating field, particularly relate to Long Term Evolution/senior Long Term Evolution (LongTerm Evolution/Long Term Evolution-Advanced, abbreviate LTE/LTE-A as) up and descending channel information acquisition methods and system under time division duplex in the system (Time Division Duplex the is called for short TDD) pattern.
Background technology
In the LTE/LTE_A system, in order to carry out descending scheduling and resource distribution, the base station need obtain the relevant information of down channel, this is comprising precoding indication information (Pre-coded MatrixIndication, abbreviation PMI), channel quality information (Channel Quality Information, be called for short CQI) and rank indication information (Rank Indication is called for short RI) etc.For this reason, the base station in down link to terminal (User Equipment, be called for short UE) transmission public guide frequency (Common ReferenceSymbol, be called for short CRS)/channel condition information pilot tone (Channel State Information ReferenceSymbol, be called for short CSI-RS), UE records the relevant information of down channel according to these pilot tones, as above-mentioned PMI, CQI and RI etc., then by ascending control channel (Physical Upink ControlChannel, be called for short PUCCH) or Uplink Shared Channel (Physical Uplink Shared Channel, be called for short PUSCH) to the above-mentioned information of base station feedback, as shown in Figure 1.
Corresponding, in order to carry out uplink scheduling and resource distribution, the base station need obtain the up channel relevant information, this is comprising precoding indication information (Pre-coded Matrix Indication, abbreviation PMI), channel quality information (Channel Quality Information, be called for short CQI) and rank indication information (RankIndication is called for short RI) etc.For this reason, a kind of method commonly used is, UE sends detecting pilot frequency (Sounding Reference Symbol to the base station, be called for short SRS), the measurement of up channel is carried out according to SRS in the base station, obtains the up channel relevant information, sends uplink authorization information to UE according to this, UE sends uplink business data according to uplink authorization information, as shown in Figure 2.
Subject matter of acquisition methods for the down channel relevant information is that up feedback overhead is bigger, especially in LTE-A, for multipoint cooperative (Co-ordinated Multi-Points, be called for short CoMP) transmission, in order to realize the optimum CoMP preliminary treatment and the operations such as selection of cooperation cell, UE need be to a large amount of channel related information of base station feedback; In addition, because information such as PMI, CQI have been carried out certain compression to descending channel information, the information of reflection down channel that can not entirely accurate, so just the operations such as scheduling, precoding and cooperation cell selection to downlink resource bring certain influence, cause the downlink transfer quality to descend.
Acquisition methods for the up channel relevant information, because SRS occupies last symbol of each subframe usually, expense is relatively big, even and only have a user to send SRS among all users, last symbol in the subframe also needs to be available, and this also can bring the very big wasting of resources.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of descending channel information acquisition methods and system, reduces up feedback overhead.
In order to address the above problem, the invention provides a kind of descending channel information acquisition methods, comprising:
Terminal is obtained descending interfere information, sends detecting pilot frequency and described descending interfere information to the base station;
The base station obtains the up channel state information according to described detecting pilot frequency, obtains the downlink channel condition information of equivalence according to the up channel state information;
The base station obtains the down channel relevant information according to the downlink channel condition information and the described descending interfere information of described equivalence.
Further, said method also can have following characteristics, and described down channel relevant information is precoding indication information and/or channel quality information and/or rank indication information.
Further, said method also can have following characteristics, and described terminal is obtained described descending interfere information according to public guide frequency or channel condition information pilot tone that the base station sends.
Further, said method also can have following characteristics, and described terminal is used alternatingly the different described base stations of alignment, sky and sends detecting pilot frequency.
The present invention also provides a kind of descending channel information to obtain system, comprises base station and terminal, wherein:
Described terminal is used to obtain descending interfere information, sends detecting pilot frequency and described descending interfere information to the base station;
Described base station is used for obtaining the up channel state information according to described detecting pilot frequency, obtains the downlink channel condition information of equivalence according to the up channel state information; And obtain the down channel relevant information according to the downlink channel condition information and the described descending interfere information of described equivalence.
Further, said system also can have following characteristics, and the described down channel relevant information that described base station obtains is precoding indication information and/or channel quality information and/or rank indication information.
Further, said system also can have following characteristics, and described base station also is used to send public guide frequency or channel condition information pilot tone to described terminal;
Described terminal is used for obtaining described descending interfere information according to public guide frequency or channel condition information pilot tone that described base station sends.
Further, said system also can have following characteristics, and described terminal is used to be used alternatingly the different described base stations of alignment, sky and sends described detecting pilot frequency.
The another technical problem that the present invention will solve provides a kind of uplink channel information acquisition methods and system, reduces the wasting of resources.
In order to address the above problem, the invention provides a kind of uplink channel information acquisition methods, comprising:
The base station obtains uplink interference information, and described uplink interference information and descending pilot frequency are sent to terminal;
Terminal is obtained downlink channel condition information according to described descending pilot frequency, obtains the up channel state information of equivalence according to described downlink channel condition information;
Terminal is obtained the up channel relevant information according to the up channel state information and the described uplink interference information of described equivalence, comprises uplink signal-channel quality information in the described up channel relevant information;
Terminal sends to the base station with described uplink signal-channel quality information.
Further, said method also can have following characteristics, and described base station obtains described uplink interference information based on uplink business data or virtual carrier.
Further, said method also can have following characteristics, and described descending pilot frequency is public guide frequency or channel condition information pilot tone.
The present invention also provides a kind of uplink channel information to obtain system, comprises base station and terminal, wherein:
Described base station is used to obtain uplink interference information, and described uplink interference information and descending pilot frequency are sent to terminal;
Described terminal, be used for obtaining downlink channel condition information according to described descending pilot frequency, obtain the up channel state information of equivalence according to described downlink channel condition information, up channel state information and described uplink interference information according to described equivalence are obtained the up channel relevant information, comprise uplink signal-channel quality information in the described up channel relevant information, described uplink signal-channel quality information is sent to described base station.
Further, said system also can have following characteristics, and described base station is used for obtaining described uplink interference information based on uplink business data or virtual carrier.
Further, said system also can have following characteristics, and the described descending pilot frequency that described base station sends is public guide frequency or channel condition information pilot tone.
Adopt the method for the invention and system, for obtaining of down channel relevant information owing to do not need the information such as PMI, CQI of feedback of down channel, therefore greatly reduce up feedback quantity, simultaneously can obtain descending channel information accurately by utilizing uplink channel information according to the reciprocity of up-downgoing channel, compare information such as PMI after compression is handled and CQI, relevant treatment such as more excellent scheduling of resource and precoding can be carried out in the base station, thereby improve the downlink transfer quality.For obtaining of up channel relevant information, the present invention does not need frequently to send SRS and carries out the up channel measurement, therefore can greatly reduce the up expense that SRS brings.
Description of drawings
Fig. 1 is the descending channel information acquisition methods flow chart among the current LTE;
Fig. 2 is the uplink channel information acquisition methods flow chart among the current LTE;
Fig. 3 is a descending channel information acquisition methods flow chart among the present invention;
Fig. 4 is a uplink channel information acquisition methods flow chart among the present invention.
Embodiment
For the LTE/LTE-A-TDD system, because its up-downgoing transmission is positioned on the identical frequency band, its up-downgoing channel has reciprocity like this, can perhaps utilize the down channel up channel that substitutes of equal value in order to come the down channel that substitutes of equal value with up channel.
The present invention provides and utilizes channel reciprocity to obtain the method for descending channel information among a kind of TDD, its core concept is by terminal descending interfere information to be fed back to the base station, the base station records the up channel state information by upstream detection pilot frequency, descending interfere information according to the reciprocity of up-downgoing channel and terminal feedback, obtain the down channel relevant information, as shown in Figure 3, this method specifically comprises the steps:
Step 301, base station send public guide frequency or channel condition information pilot tone to terminal in down link;
Step 302, terminal is carried out descending Interference Estimation according to public guide frequency or channel condition information pilot tone that the base station sends, thereby obtains descending interfere information;
Step 303, terminal sends detecting pilot frequency (SRS) in up link to the base station, and the descending interfere information that will record feeds back to the base station;
Step 304, the base station is measured up channel according to the detecting pilot frequency that terminal sends, thereby obtains the up channel state information;
Step 305, according to the reciprocity of channel, the base station can obtain the downlink channel condition information of equivalence according to the up channel state information that records;
Step 306, according to the downlink channel condition information of equivalence, in conjunction with the descending interfere information of terminal feedback, the base station can obtain the down channel relevant information, such as downlink channel quality information, precoding indication information, rank indication information etc. simultaneously.
Further, in the LTE/LTE-A system,, that is to say that the part down channel can't measure by up channel because the number of transmit antennas of UE less than its reception antenna, causes up channel can not comprise all down channels.To this, to adopt UE to be used alternatingly different alignment base stations, sky among the present invention and send detecting pilot frequency, the base station just can utilize channel reciprocity to obtain the state information of all down channels.
By said method, the base station can accurately obtain the relevant information of down channel, carries out operations such as scheduling downlink resource, modulation coding mode selection and precoding.
The present invention also provides and utilizes channel reciprocity to obtain the method for uplink channel information among a kind of TDD, its core concept is by the base station uplink interference information to be sent to terminal, terminal records downlink channel condition information according to the descending pilot frequency (public guide frequency or channel condition information pilot tone) that the base station sends, obtain the up channel relevant information according to channel reciprocity and uplink interference information, and the up channel relevant information is fed back to the base station be used for uplink scheduling, herein, the up channel relevant information refers to uplink signal-channel quality information, as shown in Figure 4, this method specifically comprises the steps:
Step 401, base station are carried out the uplink interference estimation, obtain uplink interference information;
Wherein, the base station can also can be carried out uplink interference based on modes such as virtual carriers and estimate based on uplink business data.
For based on the uplink business data mode, because the information such as modulation coding mode of the known uplink business data in base station, therefore its available signal power can accurately be calculated in the base station, the base station deducts available signal power according to the gross power of the uplink business data that records, can obtain interfering signal power, thereby obtain uplink interference information;
For based on the virtual carrier mode, the signal power that the base station records on virtual carrier is interfering signal power, thereby obtains uplink interference information.
Step 402, the base station sends descending pilot frequency to terminal, sends uplink interference information to terminal simultaneously;
Described descending pilot frequency is public guide frequency or channel condition information pilot tone;
Step 403, terminal is obtained downlink channel condition information according to the descending pilot frequency that the base station sends;
Step 404, according to the reciprocity of channel, terminal is obtained the up channel state information of equivalence according to downlink channel condition information;
Step 405, terminal are according to the up channel state information of equivalence, and the uplink interference information of base station transmission, obtain the up channel relevant information, such as up precoding information and channel quality information etc.;
Step 406, terminal is given the base station with the uplink signal-channel quality feedback information.
By said method, the base station can obtain the up channel relevant information, carries out corresponding resource distribution and scheduling, and sends uplink authorization information to UE on down link, and UE sends uplink business data according to uplink authorization information.
For the ease of understanding the present invention, the present invention is further set forth below in conjunction with specific embodiment.
Embodiment 1: the descending channel information acquisition methods
Present embodiment is an example with the TDD system of LTE-A, and it is 44 many antennas scenes of receiving of behavior down, 4 antenna transmission of the base station side of promptly making a start, and receiving terminal UE place also has four antennas to receive, and its channel is the matrix of 4*4; And 24 many antennas scenes of receiving of the behavior of going up, the UE that promptly makes a start is each to use two antennas to launch, and the receiving terminal base station goes out to have 4 antennas to receive, and its channel is the matrix of 2*4.
In order to measure descending interfere information, the base station sends CRS or CSI-RS to UE in down link, UE records descending interfere information in view of the above, feed back to the base station, owing to only need the feeding back downlink interfere information, feed back information such as PMI, CQI and RI with respect to needing in the prior art, greatly reduced up feedback overhead.
According to the present invention, downlink channel condition information is that the reciprocity according to TDD up-downgoing channel is obtained by the up channel state information.In order to obtain the up channel state information, UE sends SRS to the base station in up link, and the base station just can obtain the up channel state information according to SRS, has obtained downlink channel condition information according to the reciprocity of up-downgoing channel also equivalence.
In the present embodiment since descending be the channel of 4*4, and up be the channel of 2*4, so just exist up channel can not comprise the problem of complete down channel.According to the present invention, UE can adopt the mode that is used alternatingly the different antennae transmission to send SRS.Here suppose that four antennas in UE place are respectively antenna 1,2,3 and 4, wherein antenna 1 and antenna 2 are one group, antenna 3 and antenna 4 are one group, may be selected in the odd number subframe like this adopts antenna 1 and antenna 2 to send SRS, adopt antenna 3 and antenna 4 to send SRS and be chosen in the even number subframe, the up channel that records for twice is merged just obtained equivalent down channel like this.
After having obtained the state information of down channel, and according to the descending interfere information that UE feeds back, just can obtain relevant informations such as down channel precoding accurately and channel quality, in view of the above, the downlink resource configuration is carried out in the base station.
Embodiment 2: the uplink channel information acquisition methods
Present embodiment is an example with the LTE-TDD system.
At first, the uplink interference estimation is carried out in the base station, obtains uplink interference information;
Then, the base station sends CRS and uplink interference information to UE in down link, and UE according to the reciprocity of tdd mode lower channel, can obtain the state information of the up channel of equivalence according to the state information that CRS can record down channel.
Need to prove that the downlink antenna number be the matrix of 4*4 as descending channel, and up channel is the matrix of 1*4 more than the uplink antenna number usually, at this moment, UE chooses the channel condition information of up correspondence from down channel according to the up actual antenna that uses.
Secondly, obtained the state information of up channel after, the uplink interference information that sends according to the base station simultaneously, UE just can determine uplink signal-channel quality information, and feeds back to the base station.
Need to prove that herein for the LTE-A system, when the many antenna transmission of up employing, UE also needs definite precoding indication information, but does not need to feed back to the base station, does not need the precoding indication information because uplink scheduling is carried out in the base station.
After the base station has obtained uplink signal-channel quality information, send uplink authorization information to UE, UE sends uplink business data according to uplink authorization information.
Provided specific embodiment at descending channel information acquisition methods and the uplink channel information acquisition methods that the present invention gave above.Based on the channel reciprocity characteristics of TDD system,, only need UE feeding back downlink interfere information, and do not need to feed back a large amount of information such as CQI/PMI for obtaining of descending channel information; For obtaining of uplink channel information, do not need to send SRS, only need the base station that uplink interference information is sent to terminal, saved up expense.
Need to prove any part among the present invention, can constitute the complete up-downgoing channel obtaining method of a cover, make the base station can carry out up-downgoing scheduling of resource accurately and configuration in conjunction with having up/descending channel information acquisition methods now.Obtain part in conjunction with existing LTE up channel acquisition methods as descending channel information of the present invention, can constitute complete up-downgoing channel obtaining method, thereby correct up-downgoing scheduling of resource and configuration can be carried out in the base station.
The present invention also provides a kind of descending channel information to obtain system, comprises base station and terminal, wherein:
Described terminal is used to obtain descending interfere information, sends detecting pilot frequency and described descending interfere information to the base station;
Described base station is used for obtaining the up channel state information according to described detecting pilot frequency, obtains the downlink channel condition information of equivalence according to the up channel state information; And obtain the down channel relevant information according to the downlink channel condition information and the described descending interfere information of described equivalence.
Wherein, the described down channel relevant information obtained of described base station is precoding indication information and/or channel quality information and/or rank indication information.
Wherein, described base station also is used to send public guide frequency or channel condition information pilot tone to described terminal;
Described terminal is used for obtaining described descending interfere information according to public guide frequency or channel condition information pilot tone that described base station sends.
Wherein, described terminal is used to be used alternatingly the different described base stations of alignment, sky and sends described detecting pilot frequency.
The present invention also provides a kind of uplink channel information to obtain system, comprises base station and terminal, wherein:
Described base station is used to obtain uplink interference information, and described uplink interference information and descending pilot frequency are sent to terminal;
Described terminal, be used for obtaining downlink channel condition information according to described descending pilot frequency, obtain the up channel state information of equivalence according to described downlink channel condition information, up channel state information and described uplink interference information according to described equivalence are obtained the up channel relevant information, comprise uplink signal-channel quality information in the described up channel relevant information, described uplink signal-channel quality information is sent to described base station.
Wherein, described base station is used for obtaining described uplink interference information based on uplink business data or virtual carrier.
Wherein, the described descending pilot frequency of described base station transmission is public guide frequency or channel condition information pilot tone.
The invention is not restricted to LTE/LTE-A TDD system, other systems that satisfy the up-downgoing channel reciprocity also are fit to.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (14)

1, a kind of descending channel information acquisition methods is characterized in that, comprising:
Terminal is obtained descending interfere information, sends detecting pilot frequency and described descending interfere information to the base station;
The base station obtains the up channel state information according to described detecting pilot frequency, obtains the downlink channel condition information of equivalence according to the up channel state information; The base station obtains the down channel relevant information according to the downlink channel condition information and the described descending interfere information of described equivalence.
2, the method for claim 1 is characterized in that, described down channel relevant information is precoding indication information and/or channel quality information and/or rank indication information.
3, the method for claim 1 is characterized in that, described terminal is obtained described descending interfere information according to public guide frequency or channel condition information pilot tone that the base station sends.
As claim 1 or 2 or 3 described methods, it is characterized in that 4, described terminal is used alternatingly the different described base stations of alignment, sky and sends detecting pilot frequency.
5, a kind of descending channel information obtains system, it is characterized in that, comprises base station and terminal, wherein:
Described terminal is used to obtain descending interfere information, sends detecting pilot frequency and described descending interfere information to the base station;
Described base station is used for obtaining the up channel state information according to described detecting pilot frequency, obtains the downlink channel condition information of equivalence according to the up channel state information; And obtain the down channel relevant information according to the downlink channel condition information and the described descending interfere information of described equivalence.
6, system as claimed in claim 5 is characterized in that, the described down channel relevant information that described base station obtains is precoding indication information and/or channel quality information and/or rank indication information.
7, system as claimed in claim 5 is characterized in that,
Described base station also is used to send public guide frequency or channel condition information pilot tone to described terminal;
Described terminal is used for obtaining described descending interfere information according to public guide frequency or channel condition information pilot tone that described base station sends.
As claim 5 or 6 or 7 described systems, it is characterized in that 8, described terminal is used to be used alternatingly the different described base stations of alignment, sky and sends described detecting pilot frequency.
9, a kind of uplink channel information acquisition methods is characterized in that, comprising:
The base station obtains uplink interference information, and described uplink interference information and descending pilot frequency are sent to terminal;
Terminal is obtained downlink channel condition information according to described descending pilot frequency, obtains the up channel state information of equivalence according to described downlink channel condition information;
Terminal is obtained the up channel relevant information according to the up channel state information and the described uplink interference information of described equivalence, comprises uplink signal-channel quality information in the described up channel relevant information;
Terminal sends to the base station with described uplink signal-channel quality information.
10, method as claimed in claim 9 is characterized in that, described base station obtains described uplink interference information based on uplink business data or virtual carrier.
As claim 9 or 10 described methods, it is characterized in that 11, described descending pilot frequency is public guide frequency or channel condition information pilot tone.
12, a kind of uplink channel information is obtained system, it is characterized in that, comprises base station and terminal, wherein:
Described base station is used to obtain uplink interference information, and described uplink interference information and descending pilot frequency are sent to terminal;
Described terminal, be used for obtaining downlink channel condition information according to described descending pilot frequency, obtain the up channel state information of equivalence according to described downlink channel condition information, up channel state information and described uplink interference information according to described equivalence are obtained the up channel relevant information, comprise uplink signal-channel quality information in the described up channel relevant information, described uplink signal-channel quality information is sent to described base station.
13, system as claimed in claim 12 is characterized in that, described base station is used for obtaining described uplink interference information based on uplink business data or virtual carrier.
As claim 12 or 13 described systems, it is characterized in that 14, the described descending pilot frequency that described base station sends is public guide frequency or channel condition information pilot tone.
CN200910179957A 2009-10-14 2009-10-14 Method and system for acquiring information of uplink channel and downlink channel Pending CN101674655A (en)

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Publication number Priority date Publication date Assignee Title
WO2010145596A1 (en) * 2009-10-14 2010-12-23 中兴通讯股份有限公司 Method and system for acquiring uplink and downlink channel information
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CN102118841A (en) * 2010-06-18 2011-07-06 电信科学技术研究院 Methods and devices for sending and receiving measuring pilot frequency, feedback method and device of channel quality indicator
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WO2012048575A1 (en) * 2010-10-13 2012-04-19 中兴通讯股份有限公司 Method and system for transmitting data in multiple input multiple output (mimo) system
WO2012062197A1 (en) * 2010-11-08 2012-05-18 大唐移动通信设备有限公司 Method for reporting channel quality information and device thereof
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WO2018127126A1 (en) * 2017-01-06 2018-07-12 华为技术有限公司 Channel state information reporting method, base station and user equipment
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CN108293233A (en) * 2015-08-25 2018-07-17 瑞典爱立信有限公司 uplink pilot reference signal
WO2018177229A1 (en) * 2017-03-25 2018-10-04 华为技术有限公司 Method, device and system for transmitting signaling
CN108650060A (en) * 2012-01-30 2018-10-12 华为技术有限公司 Wireless communication measures and the system and method for CSI feedback
CN109075889A (en) * 2016-03-16 2018-12-21 华为技术有限公司 Method for transmitting signals and device
WO2020132892A1 (en) * 2018-12-25 2020-07-02 华为技术有限公司 Method and device for acquiring downlink channel information
CN111770038A (en) * 2014-12-16 2020-10-13 富士通株式会社 Downlink channel estimation method, device, communication system and terminal
WO2021227648A1 (en) * 2020-05-15 2021-11-18 大唐移动通信设备有限公司 Method and apparatus for acquiring uplink channel state information

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104079373B (en) * 2013-03-28 2017-11-24 华为技术有限公司 Method and device for determining uplink channel state information

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1708149A (en) * 2004-06-07 2005-12-14 上海贝尔阿尔卡特股份有限公司 Method and base station for adaptive regulating and modulating coding mode and/or emission power
CN101111083A (en) * 2007-08-13 2008-01-23 中兴通讯股份有限公司 Indication of quality feedback method for signal channel
CN101242345A (en) * 2007-02-06 2008-08-13 中兴通讯股份有限公司 Processing method and information format for high-speed downlink packet access channel status information feedback
CN101267654A (en) * 2007-03-16 2008-09-17 大唐移动通信设备有限公司 Dispatching method and user device for uplink channel detection pilot
CN101287261A (en) * 2007-04-13 2008-10-15 中兴通讯股份有限公司 Measuring method for quality of wideband wireless channel
CN101383654A (en) * 2007-09-05 2009-03-11 大唐移动通信设备有限公司 TDD schema channel data transmission method and a base station

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100471182B1 (en) * 2002-09-03 2005-03-10 삼성전자주식회사 Semiconductor memory device informing internal voltage level using ready/busy pin
CN100496135C (en) * 2006-03-23 2009-06-03 华为技术有限公司 A method and system for acquiring radio resource management information in an evolved network
CN101674655A (en) * 2009-10-14 2010-03-17 中兴通讯股份有限公司 Method and system for acquiring information of uplink channel and downlink channel

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1708149A (en) * 2004-06-07 2005-12-14 上海贝尔阿尔卡特股份有限公司 Method and base station for adaptive regulating and modulating coding mode and/or emission power
CN101242345A (en) * 2007-02-06 2008-08-13 中兴通讯股份有限公司 Processing method and information format for high-speed downlink packet access channel status information feedback
CN101267654A (en) * 2007-03-16 2008-09-17 大唐移动通信设备有限公司 Dispatching method and user device for uplink channel detection pilot
CN101287261A (en) * 2007-04-13 2008-10-15 中兴通讯股份有限公司 Measuring method for quality of wideband wireless channel
CN101111083A (en) * 2007-08-13 2008-01-23 中兴通讯股份有限公司 Indication of quality feedback method for signal channel
CN101383654A (en) * 2007-09-05 2009-03-11 大唐移动通信设备有限公司 TDD schema channel data transmission method and a base station

Cited By (60)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010145596A1 (en) * 2009-10-14 2010-12-23 中兴通讯股份有限公司 Method and system for acquiring uplink and downlink channel information
CN102118841A (en) * 2010-06-18 2011-07-06 电信科学技术研究院 Methods and devices for sending and receiving measuring pilot frequency, feedback method and device of channel quality indicator
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WO2012048575A1 (en) * 2010-10-13 2012-04-19 中兴通讯股份有限公司 Method and system for transmitting data in multiple input multiple output (mimo) system
CN102469496A (en) * 2010-11-05 2012-05-23 大唐移动通信设备有限公司 Method and device for reporting channel quality information
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US9872190B2 (en) 2010-11-08 2018-01-16 Datang Mobile Communications Equipment Co., Ltd. Method for reporting channel quality information and device thereof
CN106130706A (en) * 2011-01-10 2016-11-16 Lg电子株式会社 The Apparatus for () and method therefor of emission control information in a wireless communication system
CN102595469A (en) * 2011-01-12 2012-07-18 中兴通讯股份有限公司 Determination method of channel quality indication information
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US11153128B2 (en) 2011-05-13 2021-10-19 Lg Electronics Inc. CSI-RS based channel estimating method in a wireless communication system and device for same
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US11817930B2 (en) 2012-01-30 2023-11-14 Futurewei Technologies, Inc. System and method for wireless communications measurements and CSI feedback
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US11277183B2 (en) 2012-01-30 2022-03-15 Futurewei Technologies, Inc. System and method for wireless communications measurements and CSI feedback
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CN103905101A (en) * 2012-12-27 2014-07-02 中兴通讯股份有限公司 Method of determining downlink precoding granularity in LTE (Long Term Evolution) system and eNodeB
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US10880127B2 (en) 2016-03-16 2020-12-29 Huawei Technologies Co., Ltd. Signal transmission method and apparatus
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US10893426B2 (en) 2016-08-10 2021-01-12 Huawei Technologies Co., Ltd. Channel quality information calculation method, apparatus, and system
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