WO2010124602A1

WO2010124602A1 - Method for information transmission and communication apparatus

Info

Publication number: WO2010124602A1
Application number: PCT/CN2010/072186
Authority: WO
Inventors: 万蕾; 闫志宇; 任晓涛; 夏媛
Original assignee: 华为技术有限公司
Priority date: 2009-04-30
Filing date: 2010-04-26
Publication date: 2010-11-04

Abstract

The present invention discloses a method for information transmission and communication apparatus. One method includes the following steps: obtaining channel state information sequence of downlink channel; performing computing processing on the channel state information sequence and preset sequence; transmitting the processed channel state information sequence to network side. Another method includes the following steps: obtaining channel state information sequence of downlink channel; transmitting the channel state information sequence of downlink channel directly to network side by physical uplink control channel. The other method includes the following steps: obtaining channel state information sequence of downlink channel; mapping the channel state information sequence or the processed channel state information sequence into resource elements of channel resource, according to determined resource mapping manner; transmitting the channel state information sequence or the processed channel state information sequence to the network side, according to the mapping results. The invention enables correct feedback of channel state information sequence and enhances reasonability of utilization of uplink channel resource.

Description

This application claims priority on April 30, 2009, to the Chinese Patent Office, the application number PCT/CN2009/071606, the international application for the invention titled "Information Transmission Method and Communication Device", and August 28, 2009 The priority of the Chinese Patent Application, the entire disclosure of which is hereby incorporated by reference in its entirety in its entirety in the the the the the the the the the The present invention relates to the field of communications technologies, and in particular, to an information transmission method and a communication device. Background Art In a communication system, resource scheduling needs to be performed according to a channel state information (CSI) sequence. The channel state information sequence can generally be represented by a Channel Quality Indicator (CQI) or a Precoding Matrix Indicator (PMI).

In the LTE (Long Time Evolution) system, after receiving the downlink reference signal sent by the network side device, the terminal can learn the channel state information sequence of the downlink channel, and send the learned channel state information sequence of the downlink channel to the network side. The device is, for example, an evolved base station (eNB, E-UTRAN Node B) feedback. The terminal can periodically feed back the channel state information sequence of the downlink channel to the network side device by using a Physical Uplink Control Channel (PUCCH). Currently, the channel state information sequence that the terminal feeds back to the network side device in the prior art is generally hidden. The channel state information sequence of the equation, for example, quantizes the channel state information sequence of the downlink channel and then feeds back in the form of a channel quality indicator index (CQI Index), a precoding matrix indicator index (PMI Index), etc., and the network side according to the CQI Index The PMI Index performs a lookup table to obtain a corresponding sequence of channel state information. In addition, limited by the limited feedback resources, when the PUCCH carries the channel state information sequence, only one sub-band PMI can be fed back.

The prior art solution feeds back the CQI Index or PMI Index obtained by the quantization process, and cannot accurately represent the original channel state information sequence. Therefore, in some cases, the scheme cannot meet the requirements of accurately reflecting the downlink channel.

In addition, in the prior art, when the channel state information sequence is carried on the PUCCH, the same modulation coding and resource mapping manner are used for the case where the uplink channel condition is good or bad, and therefore the uplink channel resource usage is unreasonable. Summary of the invention

Embodiments of the present invention provide an information transmission method and a communication device, which can accurately feed back a channel state information sequence. The embodiment of the invention further provides an information transmission method and a communication device to improve the rationality of uplink channel resource usage.

To solve the above technical problem, the embodiment provided by the present invention is implemented by the following technical solutions: An information transmission method, including:

Obtaining a sequence of channel state information of the downlink channel;

Performing arithmetic processing on the channel state information sequence and the set sequence;

The processed channel state information sequence is transmitted to the network side.

An information transmission method includes:

Obtaining a sequence of channel state information of the downlink channel;

Mapping the channel state information sequence or the processed channel state information sequence to the resource unit of the channel resource according to the determined resource mapping manner, wherein the determined resource mapping manner is determined according to the uplink channel quality;

The channel state information sequence or the processed channel state information sequence is transmitted to the network side according to the result of the mapping.

An information transmission method includes:

Obtaining a sequence of channel state information of the downlink channel;

The channel state information sequence of the downlink channel is directly transmitted to the network side through the physical uplink control channel.

An information transmission method includes:

Receiving configuration information sent by the network side, where the configuration information includes one or any combination of the following: a length of a known set sequence, a known number of set sequences, and an OFDM symbol occupied by a known set sequence And the frequency domain position occupied by the known set sequence;

And transmitting, according to the configuration information, the known set sequence by using multiple orthogonal frequency division multiplexing OFDM symbols in an uplink control channel, where the multiple OFDM symbols include only the last two OFDMs in the special subframe. Any combination of all OFDM symbols except a combination of symbols, or any combination of all OFDM symbols in a normal subframe, the special subframe being a subframe configured to periodically transmit a monitoring reference signal (SRS), The subframe is an uplink control channel other than the special subframe.

An information transmission method includes: Receiving a signal, the signal comprising a sequence of processed channel state information;

Determining a channel parameter through which the received signal passes and an adjustment parameter used in an operation process of the channel state information sequence;

And extracting the channel state information sequence from the processed channel state information sequence according to the channel parameter and the adjustment parameter.

An information transmission method includes:

Receiving a first signal, where the first signal includes a channel state information sequence after channel transmission; receiving a second signal, where the second signal includes a reference signal sequence after channel transmission;

The first signal is compared with the second signal, and the channel state information sequence is obtained according to the operation result.

An information transmission method includes:

Receiving a signal, the signal comprising a known set sequence transmitted by a plurality of orthogonal frequency division multiplexing symbols in an uplink control channel, wherein the plurality of OFDM symbols include only the last two OFDM symbols in the special subframe Any combination of all OFDM symbols except the combination, or any combination of all OFDM symbols in a normal subframe, the special subframe being a subframe configured to periodically transmit a monitoring reference signal, the normal subframe being an uplink a control channel other than a special subframe;

Determining, according to the received signal and the set sequence, uplink channel state information of a time-frequency location where the sequence is located;

And determining, according to reciprocity of the uplink channel state information and the downlink channel state information, a channel state information sequence of the downlink channel of the time-frequency location where the sequence is located.

A terminal, comprising:

An acquiring unit, configured to acquire a channel state information sequence of the downlink channel;

a processing unit, configured to perform an operation process on the channel state information sequence and the set sequence;

And a sending unit, configured to transmit the sequence of channel state information processed by the processing unit to the network side. A terminal, comprising:

And a sending unit, configured to directly transmit the channel state information sequence of the downlink channel to the network side by using a physical uplink control channel.

A terminal, comprising:

An acquiring unit, configured to acquire a channel state information sequence of the downlink channel; a mapping unit, configured to map the channel state information sequence or the processed channel state information sequence to a resource unit of a channel resource according to the determined resource mapping manner, where the determined resource mapping manner is determined according to an uplink channel quality ;

And a sending unit, configured to transmit the channel state information sequence or the processed channel state information sequence to the network side according to the mapping result of the mapping unit.

A terminal, comprising:

And an acquiring unit, configured to receive configuration information sent by the network side, where the configuration information includes one of the following or any combination thereof: a length of the known setting sequence, a number of known setting sequences, and a known setting The frequency domain position occupied by the OFDM symbol occupied by the sequence and the known set sequence;

a sending unit, configured to send, by using the configuration information received by the acquiring unit, the known set sequence by using multiple orthogonal frequency division multiplexing OFDM symbols in an uplink control channel, where the multiple OFDM symbols include a special sub Any combination of all OFDM symbols except a combination of only the last two OFDM symbols in the frame, or any combination of all OFDM symbols in a normal subframe, the special subframe configured to periodically transmit a monitoring reference signal Subframe, the normal subframe is a subframe other than the special subframe of the uplink control channel.

A network device, including:

a receiving unit, configured to receive a signal, where the signal includes a sequence of processed channel state information; a processing unit, configured to determine a channel parameter that the received signal passes and an adjustment parameter used in a process of the channel state information sequence And extracting, according to the channel parameter and the adjustment parameter, the channel state information sequence from the processed channel state information sequence.

A network device, including:

a first receiving unit, configured to receive a first signal, where the first signal includes a channel state information sequence after channel transmission;

a second receiving unit, configured to receive a second signal, where the second signal includes a reference signal sequence after channel transmission;

And a processing unit, configured to compare the first signal with the second signal, and acquire the channel state information sequence according to the operation result.

A network device, including:

a receiving unit, configured to receive a signal, where the signal includes a known set sequence transmitted by using multiple orthogonal frequency division multiplexing symbols in an uplink control channel, where the multiple OFDM symbols include only special subframes except Any combination of all OFDM symbols except the combination of the last two OFDM symbols, or all OFDM in a normal subframe Any combination of the symbols, the special subframe is a subframe configured to periodically send a monitoring reference signal, and the normal subframe is a subframe other than the special subframe of the uplink control channel;

a first processing unit, configured to determine, according to the received signal and the set sequence, uplink channel state information of a time-frequency location where the sequence is located;

And a second processing unit, configured to determine a channel state information sequence of the downlink channel of the time-frequency position where the sequence is located according to the reciprocity of the uplink channel state information and the downlink channel state information.

As shown in the foregoing first technical solution, the embodiment of the present invention performs the operation processing on the obtained channel state information sequence of the downlink channel and the set sequence, and then transmits the processed channel state information sequence to the network side, and performs the The above processing can reduce the interference effect of the channel state information sequence in the transmission process, so that the network side receiving is more accurate, thereby improving the accuracy of the feedback information transmission.

As shown in the foregoing second technical solution, the channel state information sequence of the obtained downlink channel is directly transmitted to the network side through the physical uplink control channel, and the acquired channel state information sequence of the downlink channel does not use the CQI Index. Or the PMI Index form directly reflects the original channel state information sequence, thus improving the accuracy of feedback information transmission.

The third technical solution can be used to: after acquiring the channel state information sequence of the downlink channel, mapping the channel state information sequence or the processed channel state information sequence to the resource unit of the channel resource according to the determined resource mapping manner, The determined resource mapping manner is determined according to the uplink channel quality; by using the resource mapping processing manner, when the terminal is in a position with a better uplink channel quality, the elements of the channel state information sequence may be mapped to less uplink physics. On the resource, when the terminal is in a position with poor uplink channel quality, the elements of the channel state information sequence may be mapped to more uplink physical resources, so that the resources of the uplink channel can be made on the basis of satisfying the performance requirement of the feedback information. Get a more reasonable application.

As can be seen in the foregoing fourth technical solution, the embodiment of the present invention transmits a known sequence on multiple orthogonal frequency division multiplexing symbols divided by the uplink control channel, as long as other terminals transmit signals and known sequences on the OFDM symbols. Orthogonal, it is possible to detect the uplink channel state information, and then use the reciprocity feature of the uplink and downlink channels to obtain downlink channel state information, because the prior art uses the last one or two orthogonal frequency division multiplexing symbol periodicity. The known sequence is transmitted by using the Orthogonal Frequency Division Multiplexing (OFDM) symbol, and is not limited by the period, and may be transmitted by using multiple orthogonal frequency division multiplexing symbols at the same time. This improves the ability of the user to monitor the channel. DRAWINGS In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any creative work.

1 is a flowchart of an information transmission method according to an embodiment of the present invention;

2 is a flowchart of an information transmission method according to Embodiment 2 of the present invention;

3 is a flowchart of a method for transmitting information according to Embodiment 3 of the present invention;

4 is a schematic diagram of a feedback structure of a channel state information sequence in Embodiment 3 of the present invention;

FIG. 5 is a flowchart of a method for transmitting information according to Embodiment 4 of the present invention; FIG.

6 is a schematic diagram of a mapping according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of a mapping manner according to an embodiment of the present invention; FIG.

FIG. 8 is a schematic diagram of another mapping manner according to an embodiment of the present invention; FIG.

FIG. 9 is a schematic diagram of another mapping manner according to an embodiment of the present invention; FIG.

FIG. 10 is a schematic diagram of another mapping manner according to an embodiment of the present invention; FIG.

FIG. 11 is a schematic diagram of another mapping manner according to an embodiment of the present invention;

FIG. 12 is a schematic diagram of another mapping manner according to an embodiment of the present invention; FIG.

FIG. 13 is a schematic structural diagram of a communication device according to an embodiment of the present invention; FIG.

FIG. 14 is a schematic structural diagram of two communication devices according to an embodiment of the present invention; FIG.

15 is a schematic structural diagram of three communication devices according to an embodiment of the present invention;

16 is a schematic structural diagram of four communication devices according to an embodiment of the present invention;

17 is a schematic structural diagram of five communication devices according to an embodiment of the present invention;

18 is a schematic structural diagram of a sixth communication device according to an embodiment of the present invention;

19 is a schematic structural diagram of a communication system according to an embodiment of the present invention;

FIG. 20 is a schematic structural diagram of a terminal according to an embodiment of the present invention. The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. example. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention. The embodiment of the invention provides an information transmission method and a communication device capable of accurately feeding back a channel state information sequence. The details are described below.

1 is a flow chart of an information transmission method according to an embodiment of the present invention.

As shown in Figure 1, the steps are as follows:

Step 101: Obtain a channel state information sequence of a downlink channel.

Step 102: Perform operation processing on the channel state information sequence and the set sequence.

The set sequence referred to in this step may be a reference signal sequence or other sequence, such as a random sequence set in advance on the network side and the terminal side, or the like. The reference signal sequence may for example be a demodulation reference signal sequence. The other sequences may be the same as or different from the reference signal sequence. For example, the reference signal sequence may be a constant amplitude zero autocorrelation (CAZAC, Const Amplitude Zero Auto-Corelation) sequence, and the other sequences described above may be CAZAC sequences different from the reference signal sequence.

The performing the operation processing on the channel state information sequence and the set sequence includes:

Multiplying an element in the sequence of channel state information by a corresponding element in the set sequence, or multiplying each element of the sequence of channel state information by the set sequence.

Step 103: Transmit the processed channel state information sequence to the network side.

The transmitting the processed channel state information sequence to the network side in the step includes: transmitting the processed channel state information sequence to the network side through the physical uplink control channel.

In the embodiment of the present invention, the channel state information sequence is transmitted to the network side through the physical uplink control channel, so that the resources occupied by the UE, such as time domain and frequency domain resources, are not required to be dynamically invoked, and the processing is simpler.

In addition, before performing the operation processing on the channel state information sequence and the set sequence, the method includes: performing amplitude change processing on the acquired channel state information sequence;

Alternatively, after performing the operation processing on the channel state information sequence and the set sequence, the method includes: performing amplitude change processing on the sequence after performing the arithmetic processing;

Alternatively, after performing the operation processing on the channel state information sequence and the set sequence, the method includes: performing amplitude change processing and discrete Fourier transform on the sequence after performing the arithmetic processing;

Alternatively, after performing the operation processing on the channel state information sequence and the set sequence, the method includes: performing a discrete Fourier transform on the sequence after performing the arithmetic processing;

Alternatively, before performing the operation processing on the channel state information sequence and the set sequence, the method includes: performing amplitude change processing on the acquired channel state information sequence; and performing arithmetic processing on the channel state information sequence and the set sequence , including: performing a discrete Fourier transform on the sequence after the arithmetic processing.

For the network side, the process includes the following steps: 1) receiving a signal, the signal comprising a sequence of processed channel state information;

2) determining a channel parameter through which the received signal passes and an adjustment parameter used in the processing of the channel state information sequence;

3) Extracting the channel state information sequence from the processed channel state information sequence according to the channel parameters and the adjustment parameters.

As can be seen from the first embodiment, in the embodiment of the present invention, the obtained channel state information sequence of the downlink channel and the set sequence are processed, and then the channel state information sequence after the operation processing is transmitted to the network side. By performing arithmetic processing, the channel state information sequence can be reduced in the transmission process, so that the network side reception is more accurate, thereby improving the accuracy of the feedback information transmission.

It should be noted that, in the foregoing step, after acquiring the channel state information sequence of the downlink channel, the channel state information sequence of the downlink channel is directly transmitted to the network side, that is, the following process is performed:

1) acquiring a channel state information sequence of the downlink channel;

The channel state information sequence of the downlink channel acquired in this step is a sequence of channel state information that has not been processed, for example, without being subjected to quantization, deformation, or the like.

2) transmitting the channel state information sequence of the downlink channel to the network side through the physical uplink control channel.

Because the above process is to directly transmit the obtained channel state information sequence of the downlink channel to the network side through the physical uplink control channel, the obtained channel state information sequence of the downlink channel does not use the CQI Index or the PMI Index format, and reflects the original channel state. The information sequence, the direct means that there is no processing, so the technical solution improves the accuracy of the feedback information transmission. In addition, since the channel state information sequence of the downlink channel is not directly processed and transmitted to the network side, the amount of feedback information can be reduced, and network resources are saved to some extent.

FIG. 2 is a flowchart of an information transmission method according to Embodiment 2 of the present invention. The second embodiment of the present invention is described in more detail than the first embodiment.

As shown in Figure 2, including the steps:

Step 201: Determine a number of channel resource packets of the feedback channel state information sequence and a number of resources of each group. The step may be that the terminal determines the number of channel resource packets of the feedback channel state information sequence and the number of resources of each group, or may be a network device. The number of channel resource packets of the feedback channel state information sequence and the number of resources of each group are determined and notified to the terminal. The following is an example of terminal determination:

The terminal divides the resources allocated to the uplink channel of the terminal by the network into M feedback groups, and each feedback group includes N resource elements (RE, Resource Element). For different terminals, the value of N can be different, and the value of N can be It is configured to be fixed or semi-statically changed according to the condition of different terminals. Each feedback group may represent a sequence of channel state information of a downlink channel of the terminal at an antenna port (including a sequence of channel state information of the antenna port on multiple subbands) or a channel state of a downlink channel of the terminal on a certain carrier. Information sequence, etc.

In the embodiment of the present invention, the resources of the uplink channel of a terminal are divided into M feedback groups, and each feedback group includes N resource units, and each feedback group represents channel state information of the downlink channel of the terminal at each antenna port. The sequence is illustrated.

Through the processing of this step, the feedback amount of the channel state information sequence of different terminals can be flexibly configured, for example, the subband width is flexibly configured in multi-band feedback, and the channel conditions of the plurality of sub-bands are reflected at the same time.

It should be noted that step 201 is an optional step.

Step 202: The terminal acquires a sequence of channel state information of the downlink channel.

The step may obtain the channel state information sequence of the downlink channel according to the number of channel resource packets of the feedback channel state information sequence determined in step 201 and the number of resources of each group. For example, M feedback groups, each of which contains N resource units, acquire a total of M X N channel state information sequences.

The terminal can estimate the channel state information sequence of the downlink channel of the antenna port in different subbands according to the downlink channel reference signal (RS, Reference Signal) sequence sent by the network device. For example, for antenna port 0, the channel state information sequence of the downlink channel in different subbands can be estimated, and then the channel state information of the channel in each subband is selected by an existing setting algorithm (for example, an arithmetic averaging algorithm). The sequence, denoted as [H— = IH w H iQ ^ w H ^w H ^^ j , where represents the first sub-band, ^m . Indicates that there is ^m on antenna port 0 in the first subband. The downlink channel parameters need to be fed back. Similarly, you can get

=

_{,.,. Η k01,.} ,. Η k0nin H knl, ... H knm

That is, the downlink channel parameters on the sub-bands and n+1 antennas need to be fed back. The embodiment of the present invention may be an explicit sequence of channel state information, that is, a result of estimating the downlink channel by the terminal, so that the sequence of channel state information acquired by the network side may be more accurate. In addition, the PMI index in the prior art generally needs multiple resource units (REs) to be carried, that is, the feedback information needs to be fed back more, and the embodiment of the present invention obtains an explicit channel state information sequence. The channel state information sequence can be carried by one resource unit, so that the load of the feedback information of one sub-band can be reduced relative to the prior art, so that channel state information of multiple sub-bands can be simultaneously performed with limited transmission resources. The sequence is sent. It should be noted that H I may also be an implicit channel state information sequence, that is, a result obtained by the terminal for quantifying, transforming, or the like of the downlink channel estimation result, for example, a CQI Index, a PMI Index, or the like.

Step 203: Perform a transform on a sequence of channel state information. The channel state information sequence can be ^ ₁ . ₁ ,... „ ₁ .,..^ ₁ „ ₁ ,..^ ₁ ,...^. ₁ ,...^. „ ₁ .,...^ ₁ ,...^„ ₁ ” Transform, for example, multiply each element by a factor to perform amplitude transformation, and obtain the transformed channel state information sequence! ^,... ^ ,... ^,... ^ ,... ^ ,... ^ ,... ^,... ^Bian". Factors can be valued empirically. By performing the amplitude transformation, the relative relationship between the elements does not change, but the absolute value may be changed, which may be advantageous for the arithmetic processing.

It should be noted that this step is an optional step, and may not be performed.

Step 204: Multiply the channel state information sequence by the demodulation reference signal sequence, and then feed back to the network side. In this step, the channel state information sequence is used.

Multiply each element by the corresponding Demodulation Reference Signal (DMRS)

h„ , h, , , h = h, _f , ...h, „ , ...h, , , ...h, ,...3⁄4,„,,...h,„ ,.. .h,

•^ ^l \nm _n -^knl · · -^ ¹ knm _n

Wherein, the element in the DMRS of the uplink channel (UL, UpLink) is part or all of the elements, which may be

L=length ( l ^faTM„ J )—1 , is L m ₀ ^lnm _n knm _n J jS/j-^^^- ^ The multiplication operation can be, for example, ^ ¹⁰¹ , "'' _n l "'' nm„ "" m ,"' m. "" _n i , ''' nm _n \ is multiplied by the corresponding terms in the two vectors [ , , J", the length of the returned result and the two vectors The length is equal. It should be noted that if the length of the DMRS is not equal to ioi "" ^h w _m . ··Α„ι ,··· οι "·Ί. ··· «The length of ι can be increased by adding or subtracting elements so that the length of DMRS is equal to ^ ¹ . ¹ "" ^hwm . "'Ί,...,...。····· Α«ι „ The length of J. For example, adding an element may be adding a few existing elements, and reducing the element may be deleting any of the existing elements. When the channel state information sequence subjected to the operation processing is fed back to the network side through the physical uplink control channel, the feedback may refer to the processing result in step 201.

It should be noted that the foregoing is an example of performing amplitude conversion before step 204, and it is also possible to perform amplitude conversion after step 205. Step 205: The network side extracts a sequence of channel state information.

The signal transmitted by the terminal received by the network side through the uplink channel is ^{HuL 0} . , , ..., H _UL represents the upstream channel parameters, such as the upstream channel response, and ® represents the convolution or other multiplication operation. The network side performs channel estimation according to the demodulation reference signal sequence DMRS, and can obtain ^. Because ^8! ^. , ^..., ^^ is known, so you can get Q, ,..., ■!.

Because |_H ...... ^J=[ , -Ao _mo ,-,3⁄4o ₁ ,-Ao _M J-*k^ ₁ ,-^]' and the adjustment parameters used in the arithmetic processing, for example is known, the network side may obtain the downlink channel to extract channel state information sequence _{_{"..h Wm., ... h lnl}} , ... h lmnn, ... h k01, ... h k0m.,. ..h _knl ,...h _knmn \. As can be seen from the second embodiment, the technical solution of the embodiment of the present invention is to feed back a channel state information sequence of a downlink channel, and the channel state information sequence of the downlink channel may be explicit or Implicitly, the channel state information sequence and the demodulation reference signal sequence are subjected to a certain operation and transmitted to the network side, and the network side can extract the channel state information sequence from the known parameters, because the operation processing can make the channel The sequence of status information reduces interference effects during transmission, so it is more accurate to feed back the channel state information sequence to the network side. In addition, in the above process, when the channel state information sequence of the downlink channel is explicit, because of a sub-band channel The status information sequence can be at least one resource list The element (RE) is carried, that is, compared to the prior art PMI Index, multiple resource elements (REs) are required to be carried, and the load of the feedback information of one sub-band is reduced, so that the limited uplink control channel can be used. The downlink channel state information sequence of the multiple subbands is carried in the resource, that is, the technical solution of the embodiment of the present invention is also capable of flexibly configuring the feedback amount of the channel state information sequence of different terminals, and simultaneously reflecting the channel conditions of the multiple subbands.

Embodiment 3 and Embodiment 4 of two specific applications are described below.

FIG. 3 is a flowchart of a method for transmitting information according to Embodiment 3 of the present invention. In the third embodiment, the uplink channel is set to be PUCCH. Taking the number of transmitting antennas for the terminal as an example, the downlink channel bandwidth is divided into 60 sub-bands, and a channel state information element of one downlink channel is fed back in each sub-band of a certain terminal (the channel state information elements form a channel state information). Sequence), and is carried using a Physical Resource Block (PRB). A PRB includes 12 consecutive subcarriers in the frequency domain, and includes 7 consecutive Orthogonal Furequency Division Multiplexity (OFDM) symbols in the time domain, and one RE corresponds to a sub-frequency or upper sub-carrier. Carrier and an OFDM symbol in the time domain.

In various embodiments of the present invention, one slot includes seven consecutive OFDM symbols in the time domain, and one subframe consists of two slots in the time domain. The structure of the PUCCH for channel state information feedback is as shown in FIG. 4, that is, one PUCCH is composed of two PRBs, that is, one PUCCH has two slots in the time domain and a width in the frequency domain. 12 subcarriers. The frequency resources occupied by the first PRB and the second PRB may be different. The first, second, third, and fourth uplink DMRSs (demodulation reference signal sequences) may be carried on the i-th (i=l, 5, 8, 12) OFDM symbols, respectively. Data information to be fed back, such as a sequence of channel state information, may be carried on other OFDM symbols. It can be seen that 12*10=120 resource units in one PUCCH can be used to carry a sequence of channel state information.

As shown in Figure 3, including the steps:

Step 301: Determine a number of channel resource packets of the feedback channel state information sequence and a number of resources of each group. The step may be that the terminal determines the number of channel resource packets of the feedback channel state information sequence and the number of resources of each group, or may be the network side. The device determines the number of channel resource packets of the feedback channel state information sequence and the number of resources of each group, and then notifies the terminal. The following is an example of terminal determination:

There are 120 resource units in a PUCCH. The terminal divides the resources allocated by the network side to the uplink channel of the terminal into two feedback groups. Each feedback group contains 60 resource units (REs), and one resource unit carries one sub-band. When the channel state information sequence is used, each feedback group may be composed of a sequence of channel state information of up to 60 subbands. The network side scheduling terminal can use one PRB to carry one feedback group, so two PRBs are required to carry two feedback groups.

It should be noted that, if four transmit antennas use the same uplink channel resource to carry feedback information, they can be divided into four feedback groups, when one resource unit carries a sub-band channel state information sequence, The feedback group can be composed of channel status information of 30 sub-bands.

Step 302: The terminal acquires a sequence of channel state information of the downlink channel.

The step may obtain the channel state information sequence of the downlink channel according to the number of channel resource packets of the feedback channel state information sequence determined in step 301 and the number of resources of each group. For example, the resources of the uplink channel are divided into two feedback groups, and when each of the feedback groups includes 60 resource unit REs, 120 channel state information sequences are acquired.

The terminal estimates the channel state information sequence of the downlink channel on the two antennas according to the downlink channel reference signal sequence RS in the 60 subbands, which is denoted as [ι, °, ² , °, ... ⁶ °, <^ [ ι,ι, ² ,ι,··· «^ , 第 The first label is the sub-band number, and the second label is the antenna number. The embodiment [H] of the present invention may be an explicit sequence of channel state information, that is, a result of estimating the downlink channel by the terminal, so that the sequence of channel state information acquired by the network side may be more accurate. In addition, the load of the feedback information of one sub-band can be reduced, so that the channel state information sequence of the plurality of sub-bands can be simultaneously transmitted when the transmission resources are limited. It should be noted that [H] may be an implicit channel state information sequence, that is, a result obtained by the terminal to quantize or deform the result of the downlink channel estimation, for example, a CQI Index, a PMI Index, or the like. Step 303: Normalize a sequence of channel state information.

The channel state information sequence on each antenna is normalized, that is, the amplitude is changed, for example:

H

,

Hi =

among them,

, "bs means take the absolute value, mea" means the mean value, and the reciprocal of ^ can be regarded as the value of the factor ^:, which is equivalent to the multiplication of each element by a factor.

Then the normalized channel state information sequence can be expressed as

Step 304: Multiply the channel state information sequence by the demodulation reference signal sequence and feed back to the network side; in this step, [. ^Multiplying each element in ^ΗΐΩ · · ^Ί ' ¹ ] by the corresponding demodulation reference signal sequence (DMRS) yields:

]

The elements in |Λ), Α, ... Αΐ9" are some or all of the elements in the DMRS in the upstream channel. 4 is a schematic diagram of a feedback structure of a channel state information sequence in Embodiment 3 of the present invention.

As shown in Fig. 4, in the vertical axis direction, the corresponding one of the vertical axis of the first column is . To. The vertical axis of the second column and the sixth column corresponds to the DMRS, the left side of the dotted line is the feedback structure of the 0th time slot, the right side of the dotted line is the feedback structure of the first time slot, and each cell represents a resource unit. (RE).

Then, will ^. ' ^hl ° - - ^{Λ ω} '° ^{, kll , h21} " ^{Λ ω} ' ^ι ■! Each element in the PUCCH is transmitted to the network side according to the structure of Figure 4. If it is an explicit channel state information sequence, it can pass a resource unit The bearer, such that the load of the feedback information of one sub-band can be reduced relative to the prior art.

Step 305: The network side extracts a sequence of channel state information.

The signal transmitted by the terminal on the network side through the PUCCH is Η, _τ (3⁄4 \= ^H UL ® [Κο, _2S) ...h ₎ , _Λ , h _2A ... h ]. * [, according to demodulation The reference signal sequence DMRS, the network side can obtain the uplink channel parameter ^^, where the operation is The adjustment parameters used in the process, such as s ₀ , s ₁ , ... s _U9 are known, so the network side can extract the channel state information sequence of the downlink channel, ^ ⁰ "^ ⁶⁰ ' ⁰ " ·· ΑΟΊ ] . It should be noted that, before performing the operation processing on the channel state information sequence and the set sequence, the embodiment may include: performing amplitude change processing on the acquired channel state information sequence; or performing channel state information sequence and setting sequence After the arithmetic processing, the sequence after the arithmetic processing may be subjected to amplitude change processing.

The third embodiment has the same effect as the second embodiment, and details are not described herein again. FIG. 5 is a flowchart of a method for transmitting information according to Embodiment 4 of the present invention.

In the fourth embodiment, the uplink channel is also set to PUCCH. Taking the number of transmitting antennas used by the terminal as an example, the downlink channel bandwidth is divided into 60 sub-bands, and a channel state information sequence of one downlink channel is fed back in each sub-band of a certain terminal, and a PRB bearer is used. The main difference between the fourth embodiment and the third embodiment is that the Discrete Fourier Transform (DFT) is performed.

As shown in Figure 5, including the steps:

Step 501: Determine a number of channel resource packets of the feedback channel state information sequence and a number of resources of each group. Step 502: The terminal acquires a channel state information sequence of the downlink channel.

Step 503: Normalize a sequence of channel state information.

It should be noted that this step is not necessary.

For detailed description of the steps 501-503, reference may be made to the steps 301-303 of the third embodiment, and details are not described herein again. Step 504: Multiply the channel state information sequence by the demodulation reference signal sequence, and feed back to the network side after performing the discrete Fourier transform.

In this step, [. Multiplying each element in ' ^hl -° "' ^h , H ^Λ 6ο, ι ] by the corresponding demodulation reference signal DMRS sequence yields:

^1.0 ' ^2.0 * * -^60,0 ' ^1.1 ' ^2.1 * * -^60,1 _ ^1.0 ' ^2.0 · · -^60,0 ' ^1.1 ' ^2.1 · · -^60, 1 · * [3⁄4 '' · · -^119 ] ' where , | ) , Α , ... Α ₁₉ ” The elements in the middle are some or all of the elements in the DMRS in the upstream channel.

Then, DFT is performed as follows.

[^ι.θ ' ^1⁄2.ο · · 2, = DFT{h _{l 0} ,h ₂₀ ...h _l2

, ^5ο.ι · · 60,1 J = DFT γι _49Λ , _{50 1} ...h _{60 1}

It should be noted that the DFT is described as an example, but is not limited thereto, and other similar conversion processing may be performed.

Step 505: The network side extracts a sequence of channel state information.

The signal received by the terminal on the network side transmitted through the PUCCH is

J. According to the demodulation reference signal (DMRS), the network side can obtain ^^, so that ίϋ 可以获得 can be obtained, and according to the known o, , .. -^119 J and the inverse discrete Fourier transform (IDFT, Inverse Discrete Fourier Transform) , the network side can extract the channel state information sequence of the downlink channel hi, o ^ h _{2 Q} ... h _{6Q Q} , h _ll , h _{2 l} ... h _{6Q l} ^ Embodiment 4 has the same as the third embodiment The difference is that the DFT transform is performed, which can be applied to different situations to improve the peak-to-average-power ratio (PAPR) of the feedback signal.

It should be noted that the above is exemplified by the PUCCH feedback channel state information sequence, but is not limited thereto. When the information is fed back to other channels, such as a Physical Uplink Shared Channel (PUSCH), the above method may also be referred to. The principle is the same.

It should be noted that the above content is an example of a channel state information sequence in which the terminal feeds back the downlink channel to the network side, but is not limited thereto, and may transmit other information such as a power control message, a positioning message, and the like to the network side. The principle is similar. Also, when the network side transmits the related message to the terminal, the above method can also be referred to, and the principle is similar.

It should be noted that, before performing the operation processing on the channel state information sequence and the set sequence, the embodiment may include: performing amplitude change processing on the acquired channel state information sequence; or performing channel state information sequence and setting sequence After the arithmetic processing, the sequence after the arithmetic processing may be subjected to amplitude change processing. Alternatively, after performing the arithmetic processing on the channel state information sequence and the set sequence, the method includes: performing amplitude change processing and discrete Fourier transform on the sequence subjected to the arithmetic processing; or performing arithmetic processing on the channel state information sequence and the set sequence, The method includes: performing a discrete Fourier transform on the sequence after the operation processing; or, before performing the operation processing on the channel state information sequence and the set sequence, the method includes: performing amplitude change processing on the acquired channel state information sequence; and, in the channel state After the information sequence and the set sequence are processed, the process includes: The sequence after the row operation is subjected to discrete Fourier transform.

The embodiment of the present invention further provides the following processing scheme, wherein the following content is different from the above embodiment in formula expression, but some specific implementation manners may refer to the foregoing embodiment.

The main differences between the following solutions and the above embodiments are as follows: The receiving processing on the network side is different, the processing processing on the transmitting side is different, and the resource mapping is different. For details, refer to the following description. It should be noted that any one or more of the above differences may be different from the above embodiments.

(1) Different receiving processes on the network side

In the foregoing embodiments, the step of extracting the channel state information sequence by the network side may also have other processing manners, which are specifically described as follows, including:

(1) receiving a first signal, where the first signal includes a channel state information sequence after channel transmission; (2) receiving a second signal, where the second signal includes a reference signal sequence after channel transmission; (3) Comparing the first signal with the second signal, and acquiring the channel state information sequence according to the operation result.

Among them, (1) and (2) have no order relationship.

For example, in the second embodiment:

Assume that the data signal transmitted by the terminal on the uplink channel through the uplink channel is:

, use it as the first signal.

[H^J represents a sequence of channel parameters of the uplink channel in the corresponding frequency domain resource position, for example, a sequence composed of an uplink channel frequency domain response [HuJ = [h _u0 , h _ul , ... h _uL ] , L=length ([Κ ₀ , , ······ , h _n ] ) -1, [NJ represents the noise sequence during the uplink signal transmission, " .* " indicates the multiplication of the sequence corresponding items.

, hh, .h, .h, .h, .h, .h, .h, h, _r ', , . [ SQ

Assume that the uplink channel demodulation reference signal sequence received by the network side is y _r =[3⁄4 ₀ , 3⁄4 ₁ , ..3⁄4j.*k, s ₁ ,...s _L ]+[Nj, which is used as the second signal. .

Where [ ] represents the noise sequence during the uplink reference signal transmission.

Then the network side performs the following operations:

Where "./" indicates the division of the corresponding item of the sequence.

Since [N _s ] and [N _r ] satisfy the zero mean distribution, the above formula

That is, the channel state information sequence of the downlink channel can be obtained after the operation ,... The estimated value of " , , ... "] is: l «ί. . ,...

Therefore, the network side can use the estimated value of the channel state information sequence of the downlink channel obtained by the above processing as the channel state information sequence of the downlink channel.

Through such a processing method, the operation of the received signal on the receiving side of the network side can be simplified, and the receiving end does not need to perform channel estimation such as signal calculation, and the received signal can be directly compared, and the processing is more convenient.

For example, in the third embodiment:

It is assumed that the signal transmitted by the terminal received by the network side through the PUCCH is:

, this signal is taken as the first signal.

Suppose the sequence of the four demodulation reference signals is ― [l , ^

[s ₀ , s _v ..s _n i ^[r _v r _v r _v r ₂ , r _v r ₃ , r ₃ , r ₃ , r ₄ , r ₄ ], ie consisting of a sequence of demodulation reference signals. It should be noted that the generation of the sequence may also be other methods, such as ^. , ^..^":^,^^^^^^^^^, etc.

Generally, the i-th (i=l, 5, 8, 12) OFDM symbols may respectively carry the 1 2 3 4 uplink DMRSs (demodulation reference signal sequences), and the other OFDM symbols may carry the channel state information sequence, and the foregoing settings The scope of the invention is not limited by the examples.

It is assumed that the sequence received by the network side on the symbol of the first demodulation reference signal is y _rl u, _{..A ul} ].*k. , ,... ni+[W _rl ]' [N _rl ] represents the noise sequence during the transmission of the first uplink reference signal. On the same network side, the sequence on the other demodulation reference symbols is received as

, 4) , which represents the _mth demodulation

The noise of the uplink channel where the reference signal symbol is located indicates the frequency domain channel response of the uplink subcarriers through which the _mth uplink reference signal is transmitted.

Assume

3⁄4, , ,)

The network side performs the following operations:

y _r =fe ₀ ' io 3⁄4! ₀ Ai 3⁄4!iW JiiJ+[wj) '

Its towel / ', indicating the division of the corresponding item.

Set [n AiJ - - H " A ₃₅ ] -

, h.. _A 1 _3⁄4 [h _u4S , h _u49 ,...h _u59 ] [ _u20 ,h _{u2 l} ,...h _u

( "96, ^ <97, ·· Ίθ7] ¾

^3⁄4

Then

y,- ¹ y _r = ([ , ,... ₁₁₉ , . . . . . . , ^, 』^] ^.,^,...^ ^

•/[ΙΛθ, 1 "'"119]'* | ₀ ,^,"'1⁄2 ₉ ] + Since [N _s ] and [NJ satisfy the zero-mean distribution, the above formula

^1.0, ^2.0 * * *^60,0, ^1.1 ' ^2.1 ·Άθ,1 The operation can obtain the channel state information sequence of the downlink channel [^1.0, ^2.0 "*^60,0, ^1.1 , ^2.1 "*^60, the estimated value is ^ι.ο, ^2.0 ---^60,0 ,h _lA ,h _2l ...h ₆

Through such a processing method, the operation of the received signal on the receiving side of the network side can be simplified, and the receiving end no longer needs to perform channel estimation such as signal calculation, and the received signal can be directly compared, and the processing is more convenient.

(2) The arithmetic processing on the transmitting side is different

Each of the above embodiments is a case where the length of the channel state information sequence is equal to the length of the sequence of the element composition of the demodulation reference signal sequence DMRS, and the elements in the respective ones are multiplied one by one.

The channel state information sequence may be processed in another manner, that is, each element in the channel state information sequence to be fed back is modulated with a known sequence (in particular, the sequence may be a reference signal sequence such as DMRS). The sequence) is therefore different from the processing of the above embodiments. After processing, it is equivalent to mapping each channel state information sequence on one OFDM symbol of one PRB.

It should be noted that the known sequence may also use other sequences, which may be the same as or different from the reference signal sequence, and may be, for example, different CAZAC sequences.

Step 1: The terminal acquires a sequence of channel state information of the downlink channel.

The terminal can estimate the channel state information sequence of the downlink channel of the antenna port in different subbands according to the downlink channel reference signal RS sequence sent by the network device.

For example, the obtained channel state information sequence of the downlink channel is: where the first subband is represented, m„ indicates the first subband, and m downlink downlink channel parameters on the antenna port n need to be fed back.

For the convenience of description, the following [H] is described as

, L=length

(

)- 1. Where H„( _n =0, ..丄) is the nth downlink channel coefficient to be fed back. Step 2: The terminal modulates each element in the sequence of channel state information with a set sequence.

Each element of [H] "(n = 0, .. 丄-1) is modulated with a set sequence. The set sequence may be a reference signal sequence such as a demodulation reference signal DMRS sequence, the design The sequence may also be other sequences, such as a constant amplitude zero autocorrelation (CAZAC, Const Amplitude Zero Auto-Corelation) sequence or other sequences. In particular, the sequence may or may not be the same as the DMRS sequence.

Step 3: Map the modulated result of each channel state information sequence to the uplink physical resource.

Mapping the result of modulating each element of the channel state information sequence with a set sequence to a

On the OFDM symbol.

The following examples illustrate:

It is assumed that the channel state information sequence to be fed back is ^[ °, ^ι , · Ά ^] (length 10) according to the downlink channel reference signal RS sequence delivered by the network device.

Step 2: The terminal modulates each element in the sequence of channel state information with a set sequence;

Suppose the sequence 歹 ' J CAZAC #w is [(^., ( ^, ; H. ~H ₉ points and another ¹ J with a sequence)

CAZAC#w (« = 0 ~ 13 n≠ 1,5,8,12) is modulated and the results are as follows:

Iff *C H *C H *C 1

l ¹¹ , J

It is assumed that the four demodulation reference signal sequences carried are = [r ₁₀ , r ... r _l ], r ₂ = [r _2i0 , r ₂₁ ... r ₂₁₁ ] , , , j.

Step 3: Map the resources in the following way.

FIG. 6 is a schematic diagram of a mapping according to an embodiment of the present invention.

As shown in Fig. 6, each lattice represents one OFDM symbol in the horizontal axis direction and 12 subcarriers in the vertical axis direction. In this step, ~ 调制 is mapped to the non-pilot signal position by using the corresponding CAZAC #M modulation, and the four demodulated reference signal sequences carried are mapped to the pilot position signal. The second, sixth, ninth, and thirteenth symbols in Fig. 6 are the positions of the pilot signals, and the others are the non-pilot signal positions.

In this step, . Use the sequence [(., ., ^^, ...^.) to map to the 12 subcarriers of the first OFDM symbol, using the sequence [(^.,(^^...(^) after mapping to the third Similarly, 12 subcarriers of OFDM symbols can be obtained. Similarly, the mapping results of sequence modulation by H ₂ ~ H ₉ can be obtained. The second, sixth, ninth, and thirteenth symbols in Fig. 6 are the positions of the pilot signals, so ~ r ₄ are mapped to the OFDM symbols of the four pilot signals, respectively.

Then, the transmit signal of the terminal on the 12 subcarriers of the first OFDM symbol is: Iff *C H *C H *C 1 - The transmit signal on the 12 subcarriers of the second OFDM symbol is:

The transmit signal on the 12 subcarriers of the third OFDM symbol is: Similarly, the transmit signals on the 12 subcarriers of the 4th to 14th OFDM symbols are obtained. According to the above processing, the network side receives the signal as follows:

The received signal on the first OFDM symbol on the network side is:

_ vyOu =

, h""'0,1 ""h"«'Ο,ΙΙ 1 J+" ¹ " \ L ^J N ^V 0,0, N ^JV 0,1 "" N ^JV 0,111 J ° where. ,. ",.Λ, ο,^ is the channel frequency domain response on each subcarrier on the first OFDM symbol (non-reference signal symbol), [^. ,. , ^. ^.. . It is the noise of each subcarrier on the first OFDM symbol.

The received signal on the second OFDM symbol (which is the reference signal symbol) on the network side is:

Where Km , .. m" is the channel frequency domain response of each subcarrier on the first OFDM symbol, [Λ^,Λ^,.,.Λ^^ is the subcarrier of the second OFDM symbol on the uplink. noise.

Similarly, you can get y2~ yl3.

Accordingly, the network side demodulated signal can be processed as follows:

The first demodulation method:

1) The network side is based on yl and known [/!,. , an estimated value L h of the uplink channel frequency domain response on the second OFDM symbol (the symbol position is the reference signal symbol position), h '£/;!, 11 can be estimated to obtain other reference signal symbol positions. Estimated value of the uplink channel frequency domain response.

2) The network side obtains the estimated value of the uplink channel frequency domain response on the reference signal symbol position obtained in 1), and uses the channel interpolation method to obtain the uplink channel frequency on each OFDM symbol (non-reference signal symbol). Estimated value of the domain response, such as the estimated value of the uplink channel frequency domain response on the first OFDM

3) The network side can obtain the channel state information sequence by using the received signal on each OFDM symbol and the uplink channel frequency domain response estimation value on the OFDM symbol and the sequence used in sequence modulation on the OFDM symbol by using an equalization method.

Estimated value [ . , ,..^ ₉ ] , the estimated value is taken as the obtained channel state information sequence.

Where sum () is the summation operation.

Since TMm([C.,., ί^,.Α, p.Aj/U, [Λ^,Λ^,.,.Λ^] satisfies the zero-mean distribution', so the above formula = A ₀ «H ₀ .

The same reason can be obtained / ^ ~ A ₉ second demodulation method:

Assume

1,5,8,12); Perform the following calculation on the first OFDM symbol:

ι J \+ ^\ LN ^{J ν} ο,ο ' N ^{J ν} ο,ι ' · ·• N ^{J ν} ο,ι ι JI

Set [ 3⁄4;0,12

Due to [N. ,. , N _0I1 ,....N _0I11 ] , [N _LI0 , ^^,...,^^:! Both satisfy the mean distribution law,

[ ,. , ,. ^] is a constant amplitude sequence, so the above formula = A. H. That is, the estimated value of the first channel state information sequence. Similarly, estimates of other elements in the sequence of channel state information are available. Then the estimated value can be used as the obtained sequence of channel state information.

In particular' [ ,. , .. =[/!,. , .. "Time' . ,

Then directly calculate y ₀ -iy, that is.

(3) Different ways of resource mapping

An embodiment of the present invention provides another information transmission method, including:

1) acquiring a channel state information sequence of the downlink channel;

The channel state information sequence of the downlink channel acquired in this step may be a channel state information sequence that has not been processed, for example, without being subjected to quantization, deformation, or the like.

2) mapping the channel state information sequence or the processed channel state information sequence to the resource unit of the channel resource according to the determined resource mapping manner, wherein the determined resource mapping manner is determined according to the uplink channel quality;

The processed channel state information sequence may be a channel state information sequence processed by quantization, deformation, etc. in the prior art, or may be a processed channel state information sequence in the above embodiments.

The resource mapping manner of the channel state information sequence of the downlink channel to be fed back may be determined according to the uplink channel quality, and the method may be determined by selecting a resource mapping manner corresponding to the uplink channel quality status from a preset multiple resource mapping manner. . The uplink channel quality condition can be obtained, for example, from an uplink reference signal. For a preset resource mapping manner, that is, the position of each element mapping in the sequence is several consecutive or non-contiguous symbols in the time domain, and several consecutive or non-contiguous subcarriers in the frequency domain, where the sequence may be acquired. A sequence of channel state information or a sequence of processed channel state information.

3) The channel state information sequence or the processed channel state information sequence is transmitted to the network side according to the result of the mapping.

For the foregoing embodiments, the channel state information sequence of the downlink channel to be fed back can be mapped to the physical resource of the uplink control channel by using a preset resource mapping manner, that is, the following process is performed:

1) Determine the mapping manner of the channel state information sequence of the downlink channel to be fed back. The mapping mode may be that the network side determines the notification terminal or the terminal determines to notify the network side. The mapping manner of the channel state information sequence of the downlink channel to be fed back may be determined according to the uplink channel quality condition.

When the terminal is in a position with a good uplink channel quality, the mapping mode is determined to map elements of one channel state information sequence to fewer uplink physical resources, for example, mode c). When the terminal is in a position where the uplink channel quality is relatively poor, the mapping mode is determined to map elements of one channel state information sequence to more uplink physical resources, for example, a mode a).

2) Performing, according to the determined mapping manner, the channel state information sequence of each downlink channel to be fed back and the set sequence to obtain a channel state information sequence of the second downlink channel.

It should be noted that this step is an optional step. If there is no such step, the subsequent step is to operate the channel state information sequence of the downlink channel to be fed back without performing arithmetic processing, that is, directly use the channel state information sequence of the downlink channel as the channel state information sequence of the second downlink channel.

3) Mapping the channel state information sequence of the second downlink channel to the corresponding physical resource location according to the determined mapping manner.

4) The channel state information sequence of the mapped second downlink channel is fed back to the network side.

Through this resource mapping processing method, when the terminal is in a position with a good uplink channel quality,

The elements of one channel state information sequence are mapped onto fewer upstream physical resources. If the terminal is in a position where the uplink channel quality is relatively poor, elements of one channel state information sequence may be mapped to more uplink physical resources. On the basis of satisfying the performance requirements of the feedback information, the resources of the uplink channel can be more rationally applied.

The following content is combined with the previous modulation operation process as an example:

1) Determine the mapping manner of the channel state information sequence of the downlink channel to be fed back.

The sequence of channel state information to be fed back is ^Ά, 'Ί], and a total of values. The network side and the terminal set a mapping manner of the channel state information sequence of the downlink channel, for example, a mapping manner of the channel state information sequence of the downlink channel. The following is an example of four resource mapping examples. In general, for a preset resource mapping manner, the position of each element mapping in the channel state information sequence of the downlink channel is several consecutive or non-continuous symbols in the time domain, and several consecutive or non-continuous in the frequency domain. Continuous subcarriers.

a) mapping each element in the sequence of channel state information to the same OFDM symbol in the time domain and 4 REs of 4 subcarriers in the frequency domain.

See Figure 7 for the mapping. FIG. 7 is a schematic diagram of one mapping manner according to an embodiment of the present invention.

In FIG. 7, slot 0 is taken as an example, and the positions of the reference signal maps are indicated on the 2nd and 6th OFDM symbols. The other OFDM symbols represent the position of each element mapping in the channel state information sequence, and one element is mapped to the same OFDM symbol in the time domain and 4 subcarriers in the frequency domain. It is shown as the same standard i).

b) mapping each element in the sequence of channel state information to 5 REs of different OFDM symbols in the time domain and one subcarrier in the frequency domain;

See Figure 8 for the mapping. FIG. 8 is a schematic diagram of another mapping manner according to an embodiment of the present invention.

In FIG. 8, slot 0 is taken as an example, and the positions of the reference signal maps are indicated on the 2nd and 6th OFDM symbols, and the positions of each element mapping in the channel state information sequence are represented on other OFDM symbols. And one element is mapped to 5 REs composed of different OFDM symbols in the time domain and one subcarrier in the frequency domain (shown as the same target).

c) mapping each element in the channel state information sequence to two REs of different OFDM symbols in the time domain and two consecutive subcarriers in the frequency domain.

See Figure 9 for the mapping. FIG. 9 is a schematic diagram of another mapping manner according to an embodiment of the present invention.

In FIG. 9, slot 0 is taken as an example, and the positions of the reference signal maps are indicated on the 2nd and 6th OFDM symbols, and the positions of each element mapping in the channel state information sequence are indicated on other OFDM symbols. And one element is mapped to two REs of different OFDM symbols in the time domain and two consecutive subcarriers in the frequency domain.

d) mapping each element in the sequence of channel state information to the same OFDM symbol in the time domain and 12 REs of 12 subcarriers in the frequency domain;

See Figure 10 for the mapping. FIG. 10 is a schematic diagram of another mapping manner according to an embodiment of the present invention.

In FIG. 10, slot 0 is taken as an example, and the positions of the reference signal mapping are indicated on the 2nd and 6th OFDM symbols, and the positions of each element mapping in the sequence of channel state information are represented on other OFDM symbols. And one element is mapped to the same OFDM symbol in the time domain and 12 REs composed of 12 subcarriers in the frequency domain.

It should be noted that here are just four examples of examples, and there are other ways.

In the step 1), a mapping manner is determined for the sequence of channel state information to be fed back, for example, one of the mapping methods in the above example.

2) Performing, according to the determined mapping manner, the channel state information sequence of the downlink channel to be fed back and the set sequence to obtain a channel state information sequence of the second downlink channel. It should be noted that this step is an optional step.

For example, the channel state information sequence of the downlink channel to be fed back is multiplied with the set sequence to obtain a channel state information sequence of the second downlink channel. Alternatively, each element of the channel state information sequence of the downlink channel to be fed back is modulated with one or more set sequences to obtain a channel state information sequence of the second downlink channel.

In addition, the channel state information sequence of the downlink channel to be fed back may be directly regarded as the channel state information sequence of the second downlink channel.

Each element of the channel state information sequence of the second downlink channel is mapped to the corresponding physical resource according to the resource mapping manner determined in step 1).

The following is a detailed description of specific application examples:

Application example 1 :

The sequence of channel state information to be fed back is [ΗοΆ'Ά], a total of ₃₀ values. The network side or the terminal determines the channel state information mapping manner according to the current uplink channel condition as shown in FIG. FIG. 11 is a detailed schematic diagram of a mapping mode C) according to an embodiment of the present invention.

2) Each element of the channel state information sequence [H^H^.J/ to be fed back is directly regarded as a channel state information sequence of the second downlink channel.

3) According to the resource mapping method of Figure 11 ^[ . Each element of A, · · -^29 ] is mapped to the corresponding physical resource.

4) The mapped channel state information sequence is transmitted to the network side through the uplink control channel feedback.

Application Example 2:

The sequence of channel state information to be fed back is ^[ . , ι,··· ^{9 ]} , a total of 10 values. The network side or the terminal decides to determine the channel state information mapping manner as shown in FIG. 12 according to the current uplink channel condition, that is, each channel state coefficient is mapped to a total of 28 REs of two OFDM symbols of one PRB. FIG. 12 is a schematic diagram of another mapping manner of an example of the present invention.

2) Will [. , ι,··· ⁹ ] Each element is modulated with one or two corresponding CAZAC sequences, see Figure 12, ie

Ho uses sequence modulation to get [H ₀ * C _0fl , H ₀ * C ₀ ,,...H ₀

Special 'J ground, Obtained after modulation

The sequence of H ₂ ~ H ₉ modulated by the CAZAC sequence was obtained.

Thereby, a channel state information sequence H of the second downlink channel is obtained. * C. ,. , H. * C _0il ,...H ₀ * C _0ill ,

¹ H ¹ 0 * r ^2,0 ' ¹ H ¹ 0 * C *^2,1,· · · ·"H0 * C ^2,U , ' ¹ H ¹ 1 * C *--3,0 ' ^J H ^J l * C *^3,1,· · ·"H1 * C ^3,11 , ' ¹ H ¹ 1 * C ^4,0 ' ¹ H ¹ 1 * C ,l,'"" Hl * C

3) H. The channel state information sequence of the second downlink channel obtained by the Hj CAZAC sequence modulation is mapped to the corresponding physical resource location in the manner of FIG.

As shown in FIG. 12, each resource unit represents one OFDM symbol on the horizontal axis and 12 subcarriers on the vertical axis. In this step, for the first time slot, the modulated° is mapped to 12 subcarriers of the first OFDM symbol, and the modulated mapping is mapped to 12 subcarriers of the third OFDM symbol, and the modulated _{2 is} mapped to the fourth 12 sub-carriers OFDM symbols on 12 subcarriers are mapped to a fifth ₃ OFDM symbols modulated, the modulated H ₄ mapped to seventh OFDM symbols on 12 subcarriers. For the same reason, the same processing is performed for the second time slot. The demodulation reference signal sequence is then mapped onto the OFDM symbols of the pilot signal, respectively.

Similarly, the sequence-modulated ~ ^H can be mapped on the same physical resource.

4) The mapped channel state information sequence is fed back to the network side.

In addition, the embodiment of the present invention further provides a method for acquiring a downlink channel state information sequence. The method is applicable to a time division duplex (TDD) system or a frequency division duplex (FDD) system with reciprocity of uplink and downlink channels.

The method includes:

Step 1: The terminal transmits a known one or more sets of sequences on a plurality of OFDM symbols in the uplink control channel. The known sequence may be an uplink reference signal sequence, or other sequences such as a CAZAC sequence. Wherein the plurality of OFDM symbols may be consecutive OFDM symbols or discontinuous OFDM symbols, and wherein the plurality of OFDM symbols include all OFDM symbols except for a combination of only the last two OFDM symbols in the special subframe. Any combination, or any combination of all OFDM symbols in a normal subframe, where the special subframe is a subframe configured to periodically send a monitoring reference signal, where the normal subframe is an uplink control channel except for a special subframe. Other sub-frames.

Further, the plurality of OFDM symbols may be, for example, a plurality of consecutive or discontinuous OFDM symbols except the last one or two OFDM symbols.

In this step, the terminal may, for example, transmit a known one or more sets of sequences on a plurality of OFDM symbols in the uplink control channel according to the configuration on the network side. The configuration on the network side includes one of the following or any combination thereof: The length of the sequence; the number of known sequences, the OFDM symbols occupied by the known sequences, and the frequency domain resources occupied by the known sequences.

The set of sequences may be one or more sequences sent by the terminal for monitoring channel status information of one antenna port and/or one cell and/or one component carrier.

Step 2: The network side obtains uplink channel state information according to the received signal and the sequence sequence sent by the known terminal.

In this step, the network side estimates the uplink channel state information of the time-frequency resource where the sequence is located according to the received signal and the known sequence.

Step 3: The network side obtains a downlink channel state information sequence by using the reciprocity feature of the uplink and downlink channels. In this step, the network side obtains downlink channel state information of the time-frequency resource where the sequence is located according to the reciprocity of the uplink and downlink channels.

The following examples illustrate:

Step 1: Assume that the sequence of length 24 is CAZAC#«. , C„, ₁ .C„, ₂₃ ;

A known CAZAC sequence is transmitted on a plurality of OFDM symbols of the uplink control channel. For example, a sequence of length 24 requires two OFDM symbols. For example, the CAZAC sequence C _M is transmitted on the Mth (M e [0, 2, 3, 4, 6, 7, 9, 10, 11, 13]) OFDM symbols. , C _Mil ,..C _M , ₂₃ . A user may use different sequence lengths, the number of sequences, and the OFDM symbol or frequency domain location occupied by the sequence according to the base station indication. Each set of sequences may occupy the same or different OFDM symbols on one or more PRBs; or each set of sequences may occupy the same or different frequency domain locations on one or more PRBs.

Step signal is

⁼

M , 0 ' , 1 ' * * , 23 ] , where o , KM , ! , ··· _LM , ₂₃ ] are the uplink channel frequency domain responses of the subcarriers on the Mth OFDM symbol.

_FI , N _M , _{M 23} ] is the noise of each subcarrier on the Mth OFDM symbol.

According to y _M and the known sequence [c _M ,. , c _Mil , ..c _M , ₂₃ ] , the network side estimates the uplink channel frequency domain response of each subcarrier and/or the average uplink channel frequency domain response of each subcarrier.

Step 3: The network side can obtain the reciprocity of the uplink and downlink channels according to -° ' ^hulM · ¹ '- ^/ζ " ^Μ , ¹¹ ■! and/or the average uplink channel frequency domain of each subcarrier. The downlink channel frequency domain response h _dlM , . , h _{dlM Λ} ,··· h _{dlM n} j and/or the average uplink channel frequency domain response of each subcarrier, and the value is used as downlink channel state information.

In the prior art, the terminal generally uses the last one or two OFDM symbols to periodically transmit a known sequence to detect the uplink channel state information (for example, for one cycle of 10 seconds, one of the 10 seconds, for example, 9 seconds is used. The data information of the control channel is transmitted, and another time period, for example, 1 second is used to transmit the known sequence). However, in the embodiment of the present invention, the known sequence is transmitted on the OFDM symbol except the last one or two orthogonal frequency division multiplexing symbols, as long as the transmission signals of other terminals on the OFDM symbols are Known sequence orthogonal, The purpose of detecting the uplink channel state information, and then using the reciprocity feature of the uplink and downlink channels to obtain the downlink channel state information, is to use the other orthogonal frequency division multiplexing symbols to transmit the known sequence, which is not periodic. Restricted, and may be transmitted by using multiple orthogonal frequency division multiplexing symbols simultaneously. If the user transmits a known sequence by using multiple OFDM symbols of different frequency positions, the user may also monitor in a short time, such as 1 subframe. Channel state information over a wide frequency range, thus simultaneously improving the ability of user channel monitoring.

The foregoing describes in detail the information transmission method of the embodiment of the present invention. Correspondingly, the embodiment of the present invention provides a communication apparatus and a communication system.

FIG. 13 is a schematic structural diagram of a communication device according to an embodiment of the present invention.

The communication device can be a terminal. As shown in FIG. 13, the communication device includes: an acquisition unit 61, a processing unit 62, and a transmission unit 63.

The acquiring unit 61 is configured to acquire a channel state information sequence of the downlink channel.

The processing unit 62 is configured to perform an operation process on the channel state information sequence and the set sequence;

The sending unit 63 is configured to transmit the channel state information sequence processed by the processing unit 62 to the network side. Processing unit 62 can include:

The first processing unit 621 is configured to multiply an element in the channel state information sequence by a corresponding element in the set sequence; or

The fourth processing unit 622 is configured to multiply each element of the channel state information sequence by the set sequence.

Processing unit 62 also includes a second processing unit 623 and/or a third processing unit 624.

The second processing unit 623 is configured to perform amplitude variation processing.

The third processing unit 624 is configured to perform a discrete Fourier transform.

The second processing unit 623 may be configured to perform amplitude change processing on the channel state information sequence acquired by the acquiring unit 61, and notify the third processing unit 624 or the first sequence of the amplitude change processing sequence. a processing unit 621 or the fourth processing unit 622; or

The second processing unit 623 can be configured to: the first processing unit 621 or the fourth processing unit

The processed channel state information sequence is subjected to amplitude change processing, and the sequence of the amplitude change processing is notified to the third processing unit 624 or the transmitting unit 63; or

The third processing unit 624 may be configured to perform a discrete Fourier transform on the sequence of channel state information processed by the first processing unit 621 or the fourth processing unit 622, and notify the sequence of the discrete Fourier transform a second processing unit 623 or the transmitting unit 63; or The third processing unit 624 may be configured to perform a discrete Fourier transform on the sequence of channel state information processed by the second processing unit 623, and notify the sending unit 63 of the sequence after the discrete Fourier transform; or The first processing unit 621 may be configured to: multiply an element in the sequence of channel state information acquired by the acquiring unit 61 by a corresponding element in the set sequence, and notify the second process of the sequence processed by the operation process. Unit 623 or the third processing unit 624 or the transmitting unit 63; or

The first processing unit 621 may be configured to multiply an element in the channel state information sequence processed by the second processing unit 623 by a corresponding element in the set sequence, and notify the sequence of the operation processing The third processing unit 624 or the sending unit 63; or

The fourth processing unit 622 may be configured to multiply each element of the channel state information sequence acquired by the acquiring unit 61 by the set sequence, and notify the second process of the sequence processed by the operation. Unit 623 or the third processing unit 624 or the sending unit 63; or

The fourth processing unit 622 may be configured to multiply each element of the sequence of channel state information processed by the second processing unit 623 by the set sequence, and notify the sequence of the operation processing The third processing unit 624 or the transmitting unit 63.

The obtaining unit 61 includes: a determining unit 611 and an information unit 612.

The determining unit 611 is configured to determine a packet distribution of the channel resource, where the number of the feedback group of the channel resource division is determined, and the number of the resource units in the feedback group is determined by the terminal, or may be determined according to the network. Determined by the content of the side notification.

The information unit 612 is configured to obtain a channel state information sequence of the downlink channel according to the processing result of the determining unit 611.

The sending unit 63 may be specifically configured to: transmit, by using the physical uplink control channel, the channel state information sequence processed by the processing unit 62 to the network side.

The terminal may further include: a mapping unit 64.

The mapping unit 64 is configured to map, according to the determined resource mapping manner, the channel state information sequence processed by the processing unit 62 to the resource unit of the channel resource, where the determined resource mapping manner is determined according to the uplink channel quality; as well as

The sending unit 63 may be configured to transmit, by using the mapping result of the mapping unit 64, the channel state information sequence processed by the processing unit 62 to the network side; or

The sending unit 63 may be configured to transmit, by using the physical uplink control channel, the channel state information sequence processed by the processing unit 62 to the network side according to the mapping result of the mapping unit 64. FIG. 14 is a schematic structural diagram of a communication device according to an embodiment of the present invention.

The communication device can be a terminal. As shown in FIG. 14, the communication device includes: an obtaining unit 71, a processing unit

72.

The acquiring unit 71 is configured to acquire a channel state information sequence of the downlink channel.

The processing unit 72 is configured to directly transmit the channel state information sequence of the downlink channel to the network side through the physical uplink control channel.

FIG. 15 is a schematic structural diagram of three communications devices according to an embodiment of the present invention.

The communication device can be a terminal, including:

The obtaining unit 151 is configured to acquire a sequence of channel state information of the downlink channel.

The mapping unit 152 is configured to map the channel state information sequence or the processed channel state information sequence to the resource unit of the channel resource according to the determined resource mapping manner, where the determined resource mapping manner is according to the uplink channel quality. Determine

The sending unit 153 is configured to transmit the channel state information sequence or the processed channel state information sequence to the network side according to the mapping result of the mapping unit 152.

Figure 16 is a block diagram showing the structure of a communication device according to an embodiment of the present invention.

The communication device can be a network device. As shown in FIG. 16, the communication device includes: a receiving unit 81, and a processing unit 82.

The receiving unit 81 is configured to receive a signal, where the signal includes a sequence of processed channel state information; the processing unit 82 is configured to determine a channel parameter that the received signal passes and an adjustment parameter used in a process of the channel state information sequence; The channel parameter and the adjustment parameter extract a channel state information sequence from the processed channel state information sequence.

The processing unit 82 includes: a parameter acquisition unit 821 and an extraction unit 822.

a parameter obtaining unit 821, configured to determine a channel parameter of a physical uplink control channel of the received signal and a demodulation reference signal sequence used in a process of the channel state information sequence;

The extracting unit 822 is configured to extract a channel state information sequence from the processed channel state information sequence according to the channel parameter of the physical uplink control channel and the demodulation reference signal sequence.

FIG. 17 is a schematic structural diagram of a fifth communication device according to an embodiment of the present invention.

The communication device can be a network device. As shown in FIG. 17, the communication device includes:

The first receiving unit 171 is configured to receive a first signal, where the first signal includes a sequence of channel state information after being transmitted through a channel; The second receiving unit 172 is configured to receive a second signal, where the second signal includes a reference signal sequence after being transmitted through the channel;

The processing unit 173 is configured to compare the first signal with the second signal, and obtain the channel state information sequence according to the operation result.

FIG. 18 is a schematic structural diagram of a sixth communication device according to an embodiment of the present invention.

The communication device can be a network device. As shown in FIG. 18, the communication device includes:

The receiving unit 181 is configured to receive a signal, where the signal includes a known set sequence that is sent by using multiple orthogonal frequency division multiplexing symbols in an uplink control channel, where the multiple OFDM symbols include only special subframes except Any combination of all OFDM symbols except the combination of the last two OFDM symbols, or any combination of all OFDM symbols in a normal subframe, the special subframe being a subframe configured to periodically transmit a monitoring reference signal, The normal subframe is an uplink control channel other than a special subframe;

The first processing unit 182 is configured to determine, according to the received signal and the set sequence, uplink channel state information of a time-frequency location where the sequence is located;

The second processing unit 183 is configured to determine a channel state information sequence of the downlink channel of the time-frequency position where the sequence is located according to the reciprocity of the uplink channel state information and the downlink channel state information.

Figure 19 is a block diagram showing the structure of a communication system according to an embodiment of the present invention.

As shown in FIG. 19, the terminal 91 and the network device 92 are included.

The terminal 91 is configured to acquire a channel state information sequence of the downlink channel, perform operation processing on the channel state information sequence and the set sequence, and transmit the processed channel state information sequence to the network side.

The network device 92 is configured to receive a signal, where the signal includes a processed sequence of channel state information, determine a channel parameter that the received signal passes, and an adjustment parameter used in a process of the channel state information sequence; according to the channel parameter and the adjustment parameter, A sequence of channel state information is extracted from the processed sequence of channel state information.

The terminal 91 has the structure shown in FIG. 13, 14, or 15, and the network device 92 has the structure shown in FIG. 16 or 17, and details are not described herein again.

It should be noted that the information interaction, the execution process, and the like between the foregoing devices and the units in the system are based on the same concept as the method embodiment of the present invention. For details, refer to the description in the method embodiment of the present invention. No longer.

In summary, in the embodiment of the present invention, the acquired channel state information sequence of the downlink channel and the set sequence are processed, and then the processed channel state information sequence is transmitted to the network side, and the foregoing processing may be performed. Making the channel state information sequence reduce the interference effect during the transmission process, so that the network side receiving is more accurate, Therefore, the accuracy of feedback information transmission is improved.

In addition, in the embodiment of the present invention, the obtained channel state information sequence of the downlink channel is directly transmitted to the network side through the physical uplink control channel, and the acquired channel state information sequence of the downlink channel does not use the CQI Index or the PMI Index format. The original channel state information sequence is directly reflected, thus improving the accuracy of feedback information transmission.

In addition, the technical solution of the embodiment of the present invention can flexibly configure the feedback amount of channel state information of different terminals. In addition, the technical solution of the embodiment of the present invention can make the resources of the uplink channel more rationally applied on the basis of satisfying the performance requirements of the feedback information.

In addition, the technical solution of the embodiment of the present invention transmits a known sequence on multiple orthogonal frequency division multiplexing symbols of the uplink control channel, and the detection can be detected as long as the transmission signals of other terminals on the OFDM symbols are orthogonal to the known sequence. Upstream channel state information, which further utilizes the reciprocity feature of the uplink and downlink channels to obtain downlink channel state information, because the prior art uses the last one or two orthogonal frequency division multiplexing symbols to periodically transmit the known sequence, and In the embodiment of the present invention, the known sequence is transmitted by using other orthogonal frequency division multiplexing symbols, which is not limited by the period, and may be transmitted by using multiple orthogonal frequency division multiplexing symbols at the same time, thereby improving user channel monitoring. ability.

FIG. 20 is a schematic structural diagram of a terminal according to an embodiment of the present invention.

The terminal includes: an obtaining unit 2001, configured to receive configuration information sent by a network side, where the configuration information includes one or any combination of the following: a length of a known set sequence, a number of known set sequences, Known frequency domain locations occupied by OFDM symbols occupied by the set sequence and known set sequences;

The sending unit 2002 is configured to send, by using the configuration information received by the acquiring unit 2001, the known set sequence by using multiple orthogonal frequency division multiplexing OFDM symbols in an uplink control channel, where the multiple OFDM symbols include a special Any combination of all OFDM symbols except a combination of only the last two OFDM symbols in a subframe, or any combination of all OFDM symbols in a normal subframe, the special subframe configured to periodically transmit a monitoring reference signal The normal subframe is a subframe other than the special subframe of the uplink control channel.

The terminal provided in this embodiment can be used, for example, to implement a corresponding method embodiment.

A person skilled in the art can understand that all or part of the steps of implementing the above embodiments may be performed by a program to instruct related hardware, and the program may be stored in a computer readable storage medium, such as a read only memory. Disk or disc, etc.

The information transmission method and the communication device provided by the embodiments of the present invention are described in detail above. The principles and embodiments of the present invention are described in the following. The description of the above embodiments is only for helping to understand the present invention. Method and its core idea; at the same time, for those of ordinary skill in the art, in accordance with the present invention The present invention is not limited by the scope of the present invention.

Claims

Rights request

1. An information transmission method, comprising:

Obtaining a sequence of channel state information of the downlink channel;

2. The information transmission method according to claim 1, wherein:

The set sequence is a reference signal sequence.

The information transmission method according to claim 1 or 2, characterized in that:

4. The information transmission method according to claim 3, wherein:

Before performing the operation processing on the channel state information sequence and the set sequence, the method includes:

Performing amplitude change processing on the acquired sequence of channel state information;

Alternatively, after performing the operation processing on the channel state information sequence and the set sequence, the method includes:

Performing amplitude processing on the sequence after the arithmetic processing;

Performing the amplitude change processing and the discrete Fourier transform on the sequence after the arithmetic processing;

Performing a discrete Fourier transform on the sequence after the arithmetic processing;

5. The information transmission method according to claim 1, wherein:

The transmitting the processed channel state information sequence to the network side includes:

And transmitting the processed channel state information sequence to the network side through a physical uplink control channel.

The information transmission method according to claim 1 or 2, wherein: before the acquiring the channel state information sequence of the downlink channel, the method further comprises:

Determining a number of feedback groups of channel resource divisions and a number of resource units in the feedback group; The acquiring the channel state information sequence of the downlink channel is specifically: acquiring the channel state information sequence of the downlink channel according to the number of feedback groups of the channel resource division and the number of resource units in the feedback group.

After the acquiring the channel state information sequence of the downlink channel, or performing the operation processing on the channel state information sequence and the set sequence, the method further includes:

Mapping the channel state information sequence to the resource unit of the channel resource according to the determined resource mapping manner, where the determined resource mapping manner is determined according to the uplink channel quality;

Transmitting the channel state information sequence to the network side includes: transmitting the channel state information sequence to the network side according to the result of the mapping.

8. An information transmission method, comprising:

Obtaining a sequence of channel state information of the downlink channel;

And mapping the channel state information sequence or the processed channel state information sequence to the resource unit of the channel resource according to the determined resource mapping manner, where the determined resource mapping manner is determined according to the uplink channel quality;

9. An information transmission method, comprising:

Obtaining a sequence of channel state information of the downlink channel;

10. An information transmission method, comprising:

And transmitting, according to the configuration information, the known set sequence by using multiple orthogonal frequency division multiplexing OFDM symbols in an uplink control channel, where the multiple OFDM symbols include only a special subframe except Any combination of all OFDM symbols except a combination of two OFDM symbols, or any combination of all OFDM symbols in a normal subframe, the special subframe being a subframe configured to periodically transmit a monitoring reference signal SRS, A normal subframe is an uplink control channel other than a special subframe.

11. An information transmission method, comprising: Receiving a signal, the signal comprising a sequence of processed channel state information;

Determining a channel parameter and an adjustment parameter, where the channel parameter is a parameter of a channel through which the received signal passes, and the adjustment parameter is an adjustment parameter used when processing the channel state information sequence;

12. The information transmission method according to claim 11, wherein:

The channel parameter is a channel parameter of a physical uplink control channel, and the adjustment parameter is a demodulation reference signal sequence.

The information transmission method according to claim 11 or 12, characterized in that:

If the processing includes performing a discrete Fourier transform; the process of extracting the channel state information sequence includes: performing an inverse discrete Fourier transform according to the channel parameter and the adjustment parameter, from the processed channel state information sequence Extracting the sequence of channel state information.

14. An information transmission method, comprising:

And comparing the first signal with the second signal, and acquiring the channel state information sequence according to the operation result.

15. An information transmission method, comprising:

Receiving a signal, the signal comprising a known set sequence transmitted by a plurality of orthogonal frequency division multiplexing OFDM symbols in an uplink control channel, wherein the plurality of OFDM symbols include only the last two in the special subframe Any combination of all OFDM symbols except a combination of OFDM symbols, or any combination of all OFDM symbols in a normal subframe, the special subframe being a subframe configured to periodically transmit a monitoring reference signal SRS, the normal sub-frame The frame is an uplink control channel other than the special subframe;

And determining, according to the reciprocity of the uplink channel state information and the downlink channel state information, a channel state information sequence of the downlink channel at the time-frequency location where the sequence is located.

The method according to claim 15, wherein before the receiving the signal, the method further comprises: Configuring and notifying one of the user equipments transmitting the known set of sequences, or any combination thereof: the length of the known set sequence, the number of known set sequences, the known The OFDM symbol occupied by the sequence and the frequency domain position occupied by the known set sequence are set.

17. A terminal, comprising:

And a sending unit, configured to transmit the sequence of channel state information processed by the processing unit to the network side.

The terminal according to claim 17, wherein the processing unit comprises:

a first processing unit, configured to multiply an element in a sequence of channel state information by a corresponding element in the set sequence; or

And a fourth processing unit, configured to multiply each element of the channel state information sequence by the set sequence.

The terminal according to claim 18, wherein the processing unit further comprises:

a second processing unit for performing amplitude variation processing; and/or,

a third processing unit, configured to perform a discrete Fourier transform;

The second processing unit is configured to perform an amplitude change process on the channel state information sequence acquired by the acquiring unit, and notify the third processing unit or the first processing unit of the sequence of the amplitude change process. Or the fourth processing unit; or

The second processing unit is configured to perform amplitude change processing on the sequence of channel state information processed by the first processing unit or the fourth processing unit, and notify the third processing of the sequence of the amplitude change processing Unit or the transmitting unit; or

The third processing unit is configured to perform a discrete Fourier transform on the sequence of channel state information processed by the first processing unit or the fourth processing unit, and notify the second processing by a sequence of discrete Fourier transform Unit or the transmitting unit; or

The third processing unit is specifically configured to perform a discrete Fourier transform on the sequence of channel state information processed by the second processing unit, and notify the sending unit of the sequence through the discrete Fourier transform; or

The first processing unit is specifically configured to: multiply an element in a sequence of channel state information acquired by the acquiring unit by a corresponding element in the set sequence, and notify the second process of the sequence processed by the operation process a unit or the third processing unit or the transmitting unit; or The first processing unit is specifically configured to: multiply an element in a sequence of channel state information processed by the second processing unit by a corresponding element in the set sequence, and notify the sequence processed by the operation a third processing unit or the transmitting unit; or

The fourth processing unit is specifically configured to: multiply each element of the channel state information sequence acquired by the acquiring unit by the set sequence, and notify the second processing unit of the sequence processed by the operation or The third processing unit or the sending unit; or

The fourth processing unit is specifically configured to: multiply each element of the sequence of channel state information processed by the second processing unit by the set sequence, and notify the third sequence of the processed process Processing unit or the transmitting unit.

The terminal according to any one of claims 17 to 19, wherein the acquiring unit comprises: a determining unit, configured to determine a number of feedback groups of channel resource divisions and a number of resource units in the feedback group; And an information unit, configured to acquire a channel state information sequence of the downlink channel according to the processing result of the determining unit.

The terminal according to any one of claims 17 to 19, characterized in that:

The sending unit is specifically configured to: transmit, by using the physical uplink control channel, the channel state information sequence processed by the processing unit to the network side; or

The terminal further includes:

a mapping unit, configured to map, according to the determined resource mapping manner, a channel state information sequence processed by the processing unit to a resource unit of a channel resource, where the determined resource mapping manner is determined according to an uplink channel quality;

The sending unit is specifically configured to: transmit the channel state information sequence processed by the processing unit to the network side according to the mapping result of the mapping unit; or

The sending unit is configured to: transmit, by using the physical uplink control channel, the channel state information sequence processed by the processing unit to the network side according to the mapping result of the mapping unit.

22. A terminal, comprising:

23. A terminal, comprising:

A terminal, wherein the terminal comprises:

a sending unit, configured to send, by using the configuration information received by the acquiring unit, the known set sequence by using multiple orthogonal frequency division multiplexing OFDM symbols in an uplink control channel, where the multiple OFDM symbols include a special Any combination of all OFDM symbols except a combination of only the last two OFDM symbols in a subframe, or any combination of all OFDM symbols in a normal subframe, the special subframe configured to periodically transmit a monitoring reference signal A subframe of the SRS, where the normal subframe is a subframe other than the special subframe of the uplink control channel.

25. A network device, comprising:

The network device according to claim 25, wherein the processing unit comprises: a parameter obtaining unit, configured to determine a channel parameter of a physical uplink control channel of the received signal, and a sequence of the channel state information a demodulation reference signal sequence used by the processing;

And an extracting unit, configured to extract, according to the channel parameter of the physical uplink control channel and the demodulation reference signal sequence, the channel state information sequence from the processed channel state information sequence.

27. A network device, comprising:

a second receiving unit, configured to receive a second signal, where the second signal includes a reference signal sequence after being transmitted through the channel; And a processing unit, configured to compare the first signal with the second signal, and acquire the channel state information sequence according to the operation result.

28. A network device, comprising:

a receiving unit, configured to receive a signal, where the signal includes a known set sequence transmitted by using multiple orthogonal frequency division multiplexing OFDM symbols in an uplink control channel, where the multiple OFDM symbols include a special subframe Any combination of all OFDM symbols except the combination of the last two OFDM symbols, or any combination of all OFDM symbols in a normal subframe, which is a subframe configured to periodically transmit a monitoring reference signal SRS The normal subframe is a subframe other than the special subframe of the uplink control channel;