CN102026280B - Feedback method and equipment for channel state information - Google Patents

Abstract

The embodiment of the invention discloses a feedback method and feedback equipment for channel state information. The method comprises the following steps of: in a physical uplink control channel (PUCCH), feeding back the channel state information of a main carrier unit, and feeding back the channel state information of an auxiliary carrier unit in a differential quantization coding mode; in a physical uplink shared channel (PUSCH), feeding back the channel state information of a plurality of subcarriers in the main carrier unit in the differential quantization coding mode according to the difference of the channel state information of the plurality of subcarriers in the main carrier unit and the channel state information of the main carrier unit; and feeding back the channel state information of a plurality of subcarriers in the auxiliary carrier unit in the differential quantization coding mode according to the difference of the channel state information of the plurality of subcarriers in the auxiliary carrier unit and the channel state information of the auxiliary carrier unit. The feedback method and the feedback equipment save bit overhead required in the feedback of the channel state information of a plurality of carrier units.

Description

The feedback method of channel condition information and equipment

Technical field

The present invention relates to communication field, particularly relate to a kind of feedback method and equipment of channel condition information.

Background technology

At LTE-Advanced (Long Term Evolution-Advanced, advanced Long Term Evolution, hereinafter referred to as LTE-A) in system, in order to support the system bandwidth such as 100MHz wider than LTE system, need by the resource of multiple carrier units (also known as member carrier) is carried out being polymerized rear use.Concrete polymerization methods comprises has two kinds below:

(1) multiple continuous print carrier units is polymerized, for LTE-A provides larger transmission bandwidth.

(2) multiple discontinuous carrier units is polymerized, for LTE-A provides larger transmission bandwidth; Discontinuous carrier polymerization has and is more polymerized flexibility.

And in the scheme of existing LTE feedback, only considered the feedback information of single carrier units, when not considering that the feedback information spending brought when multiple carrier units channel quality information feedback increases, how to reduce the method for overhead transmission feedback information.CQI (the ChannelQuality Indication that current LTE protocol specifies, channel quality indicates) feedback scheme, be only applicable to the situation of single carrier units, after use carrier aggregation technology, the expense of how to reduce feedback information on multiple carrier units is further problem demanding prompt solution in prior art.

Summary of the invention

Embodiments of the invention provide a kind of feedback method and equipment of channel condition information, for saving overhead bit required in the information feedback of multiple carrier units.

The embodiment provides a kind of feedback method of channel condition information, comprising:

Physically in row control channel PUCCH, the channel condition information of main carrier unit is fed back, and fed back by the channel condition information of mode to auxiliary carrier units of difference quantization encoding;

Physically in row shared channel PUSCH, according to the difference of the channel condition information of multiple subcarrier in described main carrier unit and the channel condition information of described main carrier unit, by the mode of difference quantization encoding, the channel condition information of multiple subcarrier in described main carrier unit is fed back; According to the difference of the channel condition information of multiple subcarrier in described auxiliary carrier units and the channel condition information of described auxiliary carrier units, by the mode of difference quantization encoding, the channel condition information of multiple subcarrier in described auxiliary carrier units is fed back.

Wherein, described channel condition information is represented by modulating-coding form MCS grade.

Wherein, the described channel condition information of mode to described auxiliary carrier units by difference quantization encoding feeds back, and comprising:

When the frequency band correlation of described main carrier unit and auxiliary carrier units is strong, the channel condition information of mode to auxiliary carrier units of the difference quantization encoding of hybrid feedback is used to feed back, concrete:

Obtain the difference of MCS grade corresponding to the channel condition information of the auxiliary carrier units MCS grade corresponding with the channel condition information of main carrier unit, the absolute value of described difference and the positive and negative situation bit respectively by length-specific is fed back.

Wherein, the described channel condition information of mode to described auxiliary carrier units by difference quantization encoding feeds back, and comprising:

When the frequency band correlation of described main carrier unit and auxiliary carrier units is weak, the channel condition information of mode to auxiliary carrier units of the difference quantization encoding of hybrid feedback is used to feed back, concrete:

At fixing one or more special time slots, feed back the MCS grade that the channel condition information of described auxiliary carrier units is corresponding; At other transmission time slots, obtain the difference of the MCS grade that MCS grade corresponding to the channel condition information of described auxiliary carrier units and described special time slot feed back, the absolute value of described difference and the positive and negative situation bit respectively by length-specific is fed back.

Wherein, the described difference according to the channel condition information of multiple subcarrier in described main carrier unit and the channel condition information of described main carrier unit, by the mode of difference quantization encoding, the channel condition information of multiple subcarrier in described main carrier unit is fed back, comprising:

The MCS grade that the channel condition information of the MCS grade corresponding according to the channel condition information of previous moment main carrier unit and the multiple subcarrier of current time is corresponding, obtain the difference of the MCS grade of current time each subcarrier and the MCS grade of main carrier unit, the absolute value of described difference and the positive and negative situation bit respectively by length-specific is fed back;

The described difference according to the channel condition information of multiple subcarrier in described auxiliary carrier units and the channel condition information of described auxiliary carrier units, by the mode of difference quantization encoding, the channel condition information of multiple subcarrier in described auxiliary carrier units is fed back, comprising:

The MCS grade that the channel condition information of the MCS grade corresponding according to the channel condition information of the auxiliary carrier units of previous moment and the multiple subcarrier of current time is corresponding, obtain the difference of the MCS grade of current time each subcarrier and the MCS grade of auxiliary carrier units, the absolute value of described difference and the positive and negative situation bit respectively by length-specific is fed back.

Wherein, the described channel condition information to main carrier unit carries out feedback and comprises:

In PUCCH, the coding by regular length or the channel condition information of mode to main carrier unit by difference quantization encoding feed back.

Wherein, described in PUCCH, by the mode of difference quantization encoding, feedback is carried out to the channel condition information of main carrier unit and comprise:

At fixing one or more special time slots, feed back the MCS grade that the channel condition information of described main carrier unit is corresponding; At other transmission time slots, obtain the difference of the MCS grade that MCS grade corresponding to the channel condition information of described main carrier unit and described special time slot feed back, the absolute value of described difference and the positive and negative situation bit respectively by length-specific is fed back.

Embodiments of the invention additionally provide a kind of acquisition methods of channel condition information, comprising:

Physically in row control channel PUCCH, according to the channel condition information of the main carrier unit of feedback, obtain the channel condition information of main carrier unit; According to the channel condition information of the auxiliary carrier units that the mode by difference quantization encoding is fed back, obtain the channel condition information of auxiliary carrier units;

Physically in row shared channel PUSCH, according to the channel condition information of multiple subcarrier in the channel condition information of main carrier unit and the described main carrier unit that fed back by the mode of difference quantization encoding, obtain the channel condition information of multiple subcarrier in described main carrier unit; According to the channel condition information of multiple subcarrier in the channel condition information of auxiliary carrier units and the described auxiliary carrier units that fed back by the mode of difference quantization encoding, obtain the channel condition information of multiple subcarrier in described auxiliary carrier units.

Wherein, described channel condition information is represented by modulating-coding form MCS grade.

Wherein, the channel condition information of the auxiliary carrier units that described basis is fed back by the mode of difference quantization encoding, obtains the channel condition information of auxiliary carrier units, comprising:

When the frequency band correlation of described main carrier unit and auxiliary carrier units is strong, the absolute value of the difference of the MCS grade that the MCS grade that the channel condition information of auxiliary carrier units of the MCS grade corresponding according to the channel condition information of main carrier unit and feedback is corresponding is corresponding with the channel condition information of main carrier unit and positive and negative situation, obtain the channel condition information of auxiliary carrier units.

Wherein, the channel condition information of the auxiliary carrier units that described basis is fed back by the mode of difference quantization encoding, obtains the channel condition information of auxiliary carrier units, comprising:

When the frequency band correlation of described main carrier unit and auxiliary carrier units is weak, obtain in MCS grade corresponding to the channel condition information of the described auxiliary carrier units of fixing one or more special time slot feedbacks; At other transmission time slots, obtain the absolute value of the difference of the MCS grade that MCS grade corresponding to the channel condition information of described auxiliary carrier units of feedback and described special time slot feed back and positive and negative situation, obtain the channel condition information of auxiliary carrier units.

Wherein, the channel condition information of multiple subcarrier in the described channel condition information according to main carrier unit and the described main carrier unit that fed back by the mode of difference quantization encoding, obtain the channel condition information of multiple subcarrier in described main carrier unit, comprising:

The absolute value of the MCS grade of each subcarrier of current time of the MCS grade corresponding according to the channel condition information of previous moment main carrier unit and feedback and the difference of the MCS grade of main carrier unit and positive and negative situation, obtain the channel condition information of multiple subcarrier in main carrier unit described in current time;

The channel condition information of multiple subcarrier in the described channel condition information according to auxiliary carrier units and the described auxiliary carrier units that fed back by the mode of difference quantization encoding, is obtained the channel condition information of multiple subcarrier in described auxiliary carrier units, comprising:

The absolute value of the MCS grade of each subcarrier of current time of the MCS grade corresponding according to the channel condition information of the auxiliary carrier units of previous moment and feedback and the difference of the MCS grade of auxiliary carrier units and positive and negative situation, obtain the channel condition information of multiple subcarrier in auxiliary carrier units described in current time.

Wherein, the channel condition information of the described main carrier unit according to feedback, the channel condition information of acquisition main carrier unit comprise:

In PUCCH, according to by the coding of regular length or the channel condition information of main carrier unit that fed back by the mode of difference quantization encoding, obtain the channel condition information of main carrier unit.

Wherein, described in PUCCH, according to by the coding of regular length or the channel condition information of main carrier unit that fed back by the mode of difference quantization encoding, the channel condition information obtaining main carrier unit comprises:

Obtain in MCS grade corresponding to the channel condition information of the described main carrier unit of fixing one or more special time slot feedbacks; At other transmission time slots, obtain the absolute value of the difference of the MCS grade that MCS grade corresponding to the channel condition information of described main carrier unit of feedback is fed back with described special time slot and positive and negative situation, the channel condition information of acquisition main carrier unit.

Embodiments of the invention additionally provide a kind of terminal equipment, comprising:

Main carrier location mode information feedback unit, in PUCCH, feeds back the channel condition information of main carrier unit;

Auxiliary carrier units status information feedback unit, in PUCCH, is fed back by the channel condition information of mode to auxiliary carrier units of difference quantization encoding;

Unit of sub-carriers status information feedback unit, for in PUSCH, according to the difference of the channel condition information of multiple subcarrier in described main carrier unit and the channel condition information of described main carrier unit, by the mode of difference quantization encoding, the channel condition information of multiple subcarrier in described main carrier unit is fed back; According to the difference of the channel condition information of multiple subcarrier in described auxiliary carrier units and the channel condition information of described auxiliary carrier units, by the mode of difference quantization encoding, the channel condition information of multiple subcarrier in described auxiliary carrier units is fed back.

Wherein, described channel condition information is represented by modulating-coding form MCS grade.

Wherein, described auxiliary carrier units status information feedback unit comprises:

First feedback subelement, for when the frequency band correlation of described main carrier unit and auxiliary carrier units is strong, the channel condition information of mode to auxiliary carrier units of the difference quantization encoding of hybrid feedback is used to feed back, concrete: the difference obtaining MCS grade corresponding to the channel condition information of the auxiliary carrier units MCS grade corresponding with the channel condition information of main carrier unit, the absolute value of described difference and the positive and negative situation bit respectively by length-specific is fed back; And/or

Second feedback subelement, for when the frequency band correlation of described main carrier unit and auxiliary carrier units is weak, the channel condition information of mode to auxiliary carrier units of the difference quantization encoding of hybrid feedback is used to feed back, concrete: at fixing one or more special time slots, feed back the MCS grade that the channel condition information of described auxiliary carrier units is corresponding; At other transmission time slots, obtain the difference of the MCS grade that MCS grade corresponding to the channel condition information of described auxiliary carrier units and described special time slot feed back, the absolute value of described difference and the positive and negative situation bit respectively by length-specific is fed back.

Wherein, described unit of sub-carriers status information feedback unit specifically for:

The MCS grade that the channel condition information of the MCS grade corresponding according to the channel condition information of previous moment main carrier unit and the multiple subcarrier of current time is corresponding, obtain the difference of the MCS grade of current time each subcarrier and the MCS grade of main carrier unit, the absolute value of described difference and the positive and negative situation bit respectively by length-specific is fed back;

The MCS grade that the channel condition information of the MCS grade corresponding according to the channel condition information of the auxiliary carrier units of previous moment and the multiple subcarrier of current time is corresponding, obtain the difference of the MCS grade of current time each subcarrier and the MCS grade of auxiliary carrier units, the absolute value of described difference and the positive and negative situation bit respectively by length-specific is fed back.

Wherein, described main carrier location mode information feedback unit, specifically for:

In PUCCH, fed back by the channel condition information of coding to main carrier unit of regular length; Or fed back by the channel condition information of mode to main carrier unit of difference quantization encoding, concrete: at fixing one or more special time slots, to feed back the MCS grade that the channel condition information of described main carrier unit is corresponding; At other transmission time slots, obtain the difference of the MCS grade that MCS grade corresponding to the channel condition information of described main carrier unit and described special time slot feed back, the absolute value of described difference and the positive and negative situation bit respectively by length-specific is fed back.

Embodiments of the invention also provide a kind of network equipment, comprising:

Main carrier location mode information acquisition unit, in PUCCH, according to the channel condition information of the main carrier unit of feedback, obtains the channel condition information of main carrier unit;

Auxiliary carrier units state information acquisition unit, in PUCCH, according to the channel condition information of the auxiliary carrier units that the mode by difference quantization encoding is fed back, obtains the channel condition information of auxiliary carrier units;

Unit of sub-carriers state information acquisition unit, for in PUSCH, according to the channel condition information of multiple subcarrier in the channel condition information of main carrier unit and the described main carrier unit that fed back by the mode of difference quantization encoding, obtain the channel condition information of multiple subcarrier in described main carrier unit; According to the channel condition information of multiple subcarrier in the channel condition information of auxiliary carrier units and the described auxiliary carrier units that fed back by the mode of difference quantization encoding, obtain the channel condition information of multiple subcarrier in described auxiliary carrier units.

Wherein, described channel condition information is represented by modulating-coding form MCS grade.

Wherein, described auxiliary carrier units state information acquisition unit comprises:

First feedback subelement, for when the frequency band correlation of described main carrier unit and auxiliary carrier units is strong, the absolute value of the difference of the MCS grade that the MCS grade that the channel condition information of auxiliary carrier units of the MCS grade corresponding according to the channel condition information of main carrier unit and feedback is corresponding is corresponding with the channel condition information of main carrier unit and positive and negative situation, obtain the channel condition information of auxiliary carrier units; And/or

Second feedback subelement, for when the frequency band correlation of described main carrier unit and auxiliary carrier units is weak, obtains in MCS grade corresponding to the channel condition information of the described auxiliary carrier units of fixing one or more special time slot feedbacks; At other transmission time slots, obtain the absolute value of the difference of the MCS grade that MCS grade corresponding to the channel condition information of described auxiliary carrier units of feedback and described special time slot feed back and positive and negative situation, obtain the channel condition information of auxiliary carrier units.

Wherein, described unit of sub-carriers state information acquisition unit specifically for:

The absolute value of the MCS grade of each subcarrier of current time of the MCS grade corresponding according to the channel condition information of previous moment main carrier unit and feedback and the difference of the MCS grade of main carrier unit and positive and negative situation, obtain the channel condition information of multiple subcarrier in main carrier unit described in current time;

The absolute value of the MCS grade of each subcarrier of current time of the MCS grade corresponding according to the channel condition information of the auxiliary carrier units of previous moment and feedback and the difference of the MCS grade of auxiliary carrier units and positive and negative situation, obtain the channel condition information of multiple subcarrier in auxiliary carrier units described in current time.

Wherein, described main carrier location mode information feedback unit, specifically for:

In PUCCH, according to the channel condition information of the main carrier unit that the coded system by regular length is fed back, obtain the channel condition information of main carrier unit; Or the channel condition information of the main carrier unit to feed back according to the mode by difference quantization encoding, obtain the channel condition information of main carrier unit, concrete: to obtain in MCS grade corresponding to the channel condition information of the described main carrier unit of fixing one or more special time slot feedbacks; At other transmission time slots, obtain the absolute value of the difference of the MCS grade that MCS grade corresponding to the channel condition information of described main carrier unit of feedback is fed back with described special time slot and positive and negative situation, the channel condition information of acquisition main carrier unit.

Compared with prior art, embodiments of the invention have the following advantages:

When multi-carrier polymerizing, by the mode of difference quantization encoding, the channel condition information of multiple subcarrier in multiple subcarrier in auxiliary carrier units, main carrier unit and described auxiliary carrier units is fed back, saved overhead bit required in the information feedback of multiple carrier units.

Accompanying drawing explanation

In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.

Fig. 1 is the flow chart of the feedback method of the channel condition information provided in the embodiment of the present invention;

Fig. 2 is another flow chart of the feedback method of the channel condition information provided in the embodiment of the present invention

Fig. 3 is the schematic diagram of main carrier unit and the auxiliary carrier units applied in the embodiment of the present invention;

Fig. 4 is the feedback system schematic diagram of the channel condition information of the main carrier unit provided in the embodiment of the present invention;

Fig. 5 is the feedback system schematic diagram of the channel condition information of the auxiliary carrier units provided in the embodiment of the present invention;

Fig. 6 is the feedback system schematic diagram of the channel condition information of the unit of sub-carriers provided in the embodiment of the present invention

Fig. 7 is the schematic diagram of the main carrier unit of acquisition terminal equipment feedback and the channel condition information of auxiliary carrier units provided in the embodiment of the present invention;

Fig. 8 is the schematic diagram of the channel condition information of the unit of sub-carriers of the acquisition terminal equipment feedback provided in the embodiment of the present invention;

Fig. 9 is the structural representation of the terminal equipment provided in the embodiment of the present invention;

Figure 10 is the structural representation of the network equipment provided in the embodiment of the present invention.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.

The embodiment provides a kind of feedback method of channel condition information, when being applied to the terminal equipment side of carrying out information feedback, as shown in Figure 1, comprising:

Step s101, at PUCCH (Physical Uplink Control Channel, Physical Uplink Control Channel) in, the channel condition information of main carrier unit is fed back, and is fed back by the channel condition information of mode to auxiliary carrier units of difference quantization encoding;

Step s102, at PUSCH (Physical Uplink Shared Channel, Physical Uplink Shared Channel) in, according to the difference of the channel condition information of subcarrier multiple in main carrier unit and the channel condition information of main carrier unit, fed back by the channel condition information of mode to subcarrier multiple in main carrier unit of difference quantization encoding; According to the difference of the channel condition information of subcarrier multiple in auxiliary carrier units and the channel condition information of auxiliary carrier units, fed back by the channel condition information of mode to subcarrier multiple in auxiliary carrier units of difference quantization encoding.

For the feedback method of the channel condition information that embodiments of the invention provide, when being applied to the network equipment of the channel condition information obtaining feedback, as shown in Figure 2, comprising:

Step s201, in PUCCH, according to the channel condition information of the main carrier unit of feedback, the channel condition information obtaining main carrier unit; According to the channel condition information of the auxiliary carrier units that the mode by difference quantization encoding is fed back, obtain the channel condition information of auxiliary carrier units;

Step s202, in PUSCH, according to the channel condition information of multiple subcarrier in the channel condition information of main carrier unit and the main carrier unit that fed back by the mode of difference quantization encoding, obtain the channel condition information of multiple subcarrier in main carrier unit; According to the channel condition information of multiple subcarrier in the channel condition information of auxiliary carrier units and the auxiliary carrier units that fed back by the mode of difference quantization encoding, obtain the channel condition information of multiple subcarrier in auxiliary carrier units.

Below in conjunction with concrete application scenarios, the embodiment of the feedback method of channel condition information in the present invention is described.

In multi-carrier polymerizing situation, for terminal equipment, independently corresponding channel status is measured to each carrier units, and according to SINR (the Signal to Interference plusNoise Ratio that channel status measurement result obtains, Signal to Interference plus Noise Ratio) or other reflection current channel conditions information, SINR or reflection current channel condition throughput grade mapping to correspondence MCS (Modulation and Coding Scheme, modulating-coding form) grade.The MCS grade that the channel status of each carrier units is corresponding is: MCS ₁, MCS ₂, MCS ₃... MCS _n, wherein N is the carrier units quantity activated.

In application scenarios of the present invention, on PUCCH, fed back by the channel condition information of mode to auxiliary carrier units of difference quantization encoding; On PUSCH, by the mode of difference quantization encoding, the channel condition information of multiple subcarrier in main carrier unit and auxiliary carrier units is fed back.Below respectively the feedback system in PUCCH and PUSCH is described.

(1) on PUCCH, feed back the channel condition information of main carrier unit and auxiliary carrier units.

First the feedback system of the channel condition information of main carrier unit is introduced.

The relation of main carrier unit and auxiliary carrier units as shown in Figure 3.Wherein, main carrier unit is a carrier units of being specified by high-level signaling static state.Main carrier unit, according to the indication information of high-level signaling, can use following two kinds of feedback systems to feed back channel condition information, its schematic diagram as shown in Figure 4:

(1) the quantification MCS class information of regular length (such as length is 5 bits) is fed back; Or

(2) independent feedback mode is used, the MCS class information through quantizing in specific transmission time or agreement time slot feedback, the MCS grade obtained when pre-test in other transmission times or slot transmission and specific transmission time or arrange the difference of MCS class information of slot transmission.

Below introduce the feedback system of the channel condition information of auxiliary carrier units.

In embodiments of the invention, for the feedback system of the channel condition information of auxiliary carrier units, network side is configured in advance and sends the higher layer signalling message about configuration, and terminal, according to higher layer signalling message, selects the hybrid feedback mode about auxiliary carrier units or independent feedback mode.Two kinds of way choice standards are relevant with the frequency band correlation of auxiliary carrier units and main carrier unit, when the frequency band correlation of auxiliary carrier units and main carrier unit is stronger, adopt hybrid feedback mode; When the frequency band correlation of auxiliary carrier units and main carrier unit is more weak, adopt independent feedback mode.Wherein, auxiliary carrier units is relevant with the difference of the MCS grade of auxiliary carrier units and the MCS grade of carrier units to the strong and weak criterion of the frequency band correlation of main carrier unit, and the larger then correlation of difference is more weak, and the less then correlation of difference is stronger.

For hybrid feedback mode: when the frequency band correlation of auxiliary carrier units and main carrier unit is stronger, the MCS grade MCS that auxiliary carrier units channel condition information obtains with auxiliary carrier units measurement _iwith the difference DELTA of main carrier unit MCS grade MCS _irepresent.Difference DELTA _iaccount form as shown in formula (1):

Δ _i ＝MCS _i-MCS (1)

In the LTE system of prior art, MCS is divided into 16 grades, therefore MCS grade needs 4 bit quantization codings.When carrier aggregation, the main carrier unit that existing LTE system is specified according to the MCS grade measured, choice for use 5 bit feedback state information.For the difference DELTA of auxiliary carrier units MCS grade and main carrier unit MCS grade _i, in an encoding process, need the information instruction Δ of 1 bit _ipositive and negative situation.Consider that the frequency band correlation of main carrier unit and auxiliary carrier units is comparatively large, i.e. Δ _ivalue span is not too large, Δ _iadopt 3 bit quantization codings can meet the requirement of information feedback precision, wherein the 1st bit instruction Δ _ipositive and negative situation, after 2 bits determine quantize scope (i.e. Δ _iabsolute value).Except adopting 3 bit quantization codings, can certainly adopt 4 bit quantization codings, then wherein the 1st bit indicates Δ _ipositive and negative situation, after 3 bits determine quantize scope.

For independent feedback mode: auxiliary carrier units and main carrier unit frequency band correlation more weak, auxiliary carrier units selects dynamic time feedback system, at the transmission time slot of specific transmission time or agreement (as T ₁) feedback quantizes according to channel condition information the MCS grade that obtains, MCS grade adopts 5 bit quantizations to encode; At the transmission time slot of other constant transmissions times or agreement (as T ₂) difference DELTA of MCS grade transmitted with the transmission time slot in specific transmission time or agreement of feedback, this difference can adopt the quantization encoding of 3 bits (or some bits), the wherein positive and negative situation of the 1st bit instruction Δ, after 2 bits (or some bits) determine the scope (i.e. the absolute value of Δ) that quantizes.Difference DELTA account form as shown in formula (2):

$\mathrm{\Δ}={\mathrm{MCS}}_{T_1}-{\mathrm{MCS}}_{T_2}---\left(2\right)$

Can certainly adopt 4 bit quantization codings, then wherein the 1st bit indicates Δ _ipositive and negative situation, after 3 bits determine quantize scope.

In the embodiment of the present invention, the feedback system schematic diagram of the channel condition information of auxiliary carrier units as shown in Figure 5.

Therefore, no matter adopt any mode, and directly use compared with 5 bit feedback state informations in prior art, effectively can reduce overhead bit.

(2) on PUSCH, by the mode of difference quantization encoding, the channel condition information of multiple subcarrier in main carrier unit and auxiliary carrier units is fed back.

Each carrier units (comprising main carrier unit and auxiliary carrier units), according to high-level signaling, when feeding back the channel quality information of multiple subcarrier, needs the channel quality information of feedback to be directly proportional with the carrier units number N be polymerized.Consider that feedack amount is comparatively large, current PUCCH channel can not meet transmission requirement, therefore, and can at the channel condition information of multiple subcarriers of PUSCH transmission carrier units.

For the channel condition information of multiple subcarriers of main carrier unit, its feedback system is: the broadband MCS grade measured according to previous moment main carrier unit, obtain the MCS grade of multiple subcarrier with current time measurement, calculate the MCS grade MCS of current time subcarrier _subcarrierwith the MCS grade MCS of main carrier unit _widebanddifference.This difference reflects the channel condition information of current sub-carrier.Difference DELTA account form as shown in formula (3):

$\mathrm{\Δ}={\mathrm{MCS}}_{\mathrm{wideband}}-{\mathrm{MCS}}_{\mathrm{subcarrie}{r}_i}---\left(3\right)$

Wherein i is for identifying different subcarriers.This difference can adopt the quantization encoding of 3 bits (or some bits) equally, wherein the positive and negative situation of the 1st bit instruction Δ, after 2 bits (or some bits) determine the scope (i.e. the absolute value of Δ) that quantizes.

For the channel condition information of multiple subcarriers of auxiliary carrier units, its feedback system is: according to the broadband MCS grade of the auxiliary carrier units that previous moment measurement obtains, with the MCS grade of multiple subcarriers that current time measurement obtains, calculate the MCS grade of current time subcarrier with the broadband MCS grade MCS of auxiliary carrier units _{wideband, T, PUCCH}difference.This difference reflects the channel condition information of current sub-carrier.Difference DELTA _pUSCHaccount form as shown in formula (4):

${\mathrm{\Δ}}_{\mathrm{PUSCH}}={\mathrm{MCS}}_{\mathrm{wideband},T,\mathrm{PUCCH}}-{\mathrm{MCS}}_{{\mathrm{subcarrier}}_j,t}---\left(4\right)$

Wherein j is for identifying different subcarriers.This difference DELTA _pUSCHthe quantization encoding of 3 bits (or some bits) can be adopted equally, wherein the positive and negative situation of the 1st bit instruction Δ, after 2 bits (or some bits) determine the scope (i.e. the absolute value of Δ) that quantizes.

In the embodiment of the present invention, the feedback system schematic diagram of the channel condition information of above-mentioned unit of sub-carriers as shown in Figure 6.

Due to the broad-band channel state information utilizing the measurement of previous moment to obtain carrier units, when therefore transmitting the channel condition information of multiple subcarrier, only need the difference transmitting the MCS grade of current time subcarrier and the broadband MCS grade of carrier units, do not need the broad-band channel state information simultaneously transmitting all carrier units.

In embodiments of the invention, network equipment, when receiving terminal equipment at the channel condition information fed back, is decoded to the channel condition information received.Concrete, in PUCCH, according to the correlation of main carrier unit and auxiliary carrier units and the channel condition information of auxiliary carrier units that fed back by the mode of difference quantization encoding, obtain the channel condition information of auxiliary carrier units; In PUSCH, according to the channel condition information of multiple subcarrier in the channel condition information of main carrier unit and auxiliary carrier units and the main carrier unit fed back by the mode of difference quantization encoding and auxiliary carrier units, obtain the channel condition information of multiple subcarrier in main carrier unit and auxiliary carrier units.

Below respectively the obtain manner of the channel condition information fed back in PUCCH and PUSCH is described.

(1) on PUCCH, obtain the main carrier unit of terminal equipment feedback and the channel condition information of auxiliary carrier units.

Obtain manner for the channel condition information of main carrier unit:

The quantification MCS class information of the regular length (such as length is 5 bits) that network equipment directly can feed back according to terminal equipment on PUCCH, obtains the channel condition information of main carrier unit; Or network equipment according to the terminal equipment received in specific transmission time or agreement time slot feedback through the MCS class information that quantizes and the difference of MCS class information transmitted with specific transmission time or predetermined time slot in the MCS grade obtained when pre-test that other transmission times transmit, and then the channel condition information of acquisition main carrier unit.

Obtain manner for the channel condition information of auxiliary carrier units:

When the frequency band correlation of main carrier unit and auxiliary carrier units is stronger, namely when the mode of hybrid feedback taked by terminal equipment, network equipment can be corresponding with the channel condition information of main carrier unit according to the MCS grade that the channel condition information of the auxiliary carrier units of MCS grade corresponding to the channel condition information of main carrier unit and terminal equipment feedback is corresponding the absolute value of difference of MCS grade and positive and negative situation, and then obtained the channel condition information of auxiliary carrier units by differential decoding.

When the frequency band correlation of main carrier unit and auxiliary carrier units is more weak, namely, when the mode of independent feedback taked by terminal equipment, network equipment can obtain terminal equipment in MCS grade corresponding to the channel condition information of the auxiliary carrier units of fixing one or more special time slots feedbacks; At other transmission time slots, network equipment can obtain the absolute value of the difference of the MCS grade that MCS grade corresponding to the channel condition information of auxiliary carrier units of terminal equipment feedback and special time slot feed back and positive and negative situation, and then is obtained the channel condition information of auxiliary carrier units by differential decoding.

Fig. 7 is the schematic diagram obtaining the main carrier unit of terminal equipment feedback and the channel condition information of auxiliary carrier units in the embodiment of the present invention.

(2) on PUSCH, obtain the unit of sub-carriers channel condition information of terminal equipment feedback.

For the multiple subcarriers in main carrier unit, network equipment can according to MCS grade corresponding to the channel condition information of previous moment main carrier unit and the MCS grade of each subcarrier of current time of terminal equipment feedback and the absolute value of the difference of the MCS grade of main carrier unit and positive and negative situation, and then by the channel condition information of multiple subcarrier in differential decoding acquisition current time main carrier unit;

For the multiple subcarriers in auxiliary carrier units, network equipment can according to MCS grade corresponding to the channel condition information of the auxiliary carrier units of previous moment and the MCS grade of each subcarrier of current time of terminal equipment feedback and the absolute value of the difference of the MCS grade of auxiliary carrier units and positive and negative situation, and then by the channel condition information of multiple subcarrier in the auxiliary carrier units of differential decoding acquisition current time.

Fig. 8 is the schematic diagram of the channel condition information of the unit of sub-carriers obtaining terminal equipment feedback in the embodiment of the present invention.

The said method that the application of the invention provides, when multi-carrier polymerizing, by the mode of difference quantization encoding, the channel condition information of multiple subcarrier in multiple subcarrier in auxiliary carrier units, main carrier unit and described auxiliary carrier units is fed back, saved overhead bit required in the information feedback of multiple carrier units.

Embodiments of the invention additionally provide a kind of terminal equipment, as shown in Figure 9, comprising:

Main carrier location mode information feedback unit 10, in PUCCH, feeds back the channel condition information of main carrier unit;

Auxiliary carrier units status information feedback unit 20, in PUCCH, is fed back by the channel condition information of mode to auxiliary carrier units of difference quantization encoding;

Unit of sub-carriers status information feedback unit 30, for in PUSCH, according to the difference of the channel condition information of subcarrier multiple in main carrier unit and the channel condition information of main carrier unit, fed back by the channel condition information of mode to subcarrier multiple in main carrier unit of difference quantization encoding; According to the difference of the channel condition information of subcarrier multiple in auxiliary carrier units and the channel condition information of auxiliary carrier units, fed back by the channel condition information of mode to subcarrier multiple in auxiliary carrier units of difference quantization encoding.

Wherein, channel condition information is represented by modulating-coding form MCS grade.

Main carrier location mode information feedback unit 10, specifically for: in PUCCH, by the coding (as 5 bit quantization codings) of regular length, the channel condition information of main carrier unit is fed back; Or fed back by the channel condition information of mode to main carrier unit of difference quantization encoding, concrete: at fixing one or more special time slots, feed back the MCS grade that the channel condition information of main carrier unit is corresponding; At other transmission time slots, obtain the difference of the MCS grade that MCS grade corresponding to the channel condition information of main carrier unit and special time slot feed back, the absolute value of difference and the positive and negative situation bit respectively by length-specific is fed back.

Wherein, auxiliary carrier units status information feedback unit 20 may further include:

First feedback subelement 21, for when the frequency band correlation of main carrier unit and auxiliary carrier units is stronger, the channel condition information of mode to auxiliary carrier units of the difference quantization encoding of hybrid feedback is used to feed back, concrete: the difference obtaining MCS grade corresponding to the channel condition information of auxiliary carrier units, the MCS grade corresponding with the channel condition information of main carrier unit, the absolute value of difference and the positive and negative situation bit respectively by length-specific is fed back; And/or

Second feedback subelement 22, for when the frequency band correlation of main carrier unit and auxiliary carrier units is more weak, the channel condition information of mode to auxiliary carrier units of the difference quantization encoding of hybrid feedback is used to feed back, concrete: at fixing one or more special time slots, feed back the MCS grade that the channel condition information of auxiliary carrier units is corresponding; At other transmission time slots, obtain the difference of the MCS grade that MCS grade corresponding to the channel condition information of auxiliary carrier units and special time slot feed back, the absolute value of difference and the positive and negative situation bit respectively by length-specific is fed back.

Wherein, unit of sub-carriers status information feedback unit 30 specifically for:

The MCS grade that the channel condition information of the MCS grade corresponding according to the channel condition information of previous moment main carrier unit and the multiple subcarrier of current time is corresponding, obtain the difference of the MCS grade of current time each subcarrier and the MCS grade of main carrier unit, the absolute value of difference and the positive and negative situation bit respectively by length-specific is fed back;

The MCS grade that the channel condition information of the MCS grade corresponding according to the channel condition information of the auxiliary carrier units of previous moment and the multiple subcarrier of current time is corresponding, obtain the difference of the MCS grade of current time each subcarrier and the MCS grade of auxiliary carrier units, the absolute value of difference and the positive and negative situation bit respectively by length-specific is fed back.

Embodiments of the invention additionally provide a kind of network equipment, as shown in Figure 10, comprising:

Main carrier location mode information acquisition unit 40, in PUCCH, according to the channel condition information of the main carrier unit of feedback, obtains the channel condition information of main carrier unit;

Auxiliary carrier units state information acquisition unit 50, in PUCCH, according to the channel condition information of the auxiliary carrier units that the mode of difference quantization encoding is fed back, obtains the channel condition information of auxiliary carrier units;

Unit of sub-carriers state information acquisition unit 60, for in PUSCH, according to the channel condition information of multiple subcarrier in the channel condition information of main carrier unit and the main carrier unit that fed back by the mode of difference quantization encoding, obtain the channel condition information of multiple subcarrier in main carrier unit; According to the channel condition information of multiple subcarrier in the channel condition information of auxiliary carrier units and the auxiliary carrier units that fed back by the mode of difference quantization encoding, obtain the channel condition information of multiple subcarrier in auxiliary carrier units.

Wherein, channel condition information is represented by modulating-coding form MCS grade.

Wherein, main carrier location mode information feedback unit 40 specifically for:

In PUCCH, according to the channel condition information of the main carrier unit that the coded system by regular length is fed back, obtain the channel condition information of main carrier unit; Or the channel condition information of the main carrier unit to feed back according to the mode by difference quantization encoding, obtain the channel condition information of main carrier unit, concrete: to obtain in MCS grade corresponding to the channel condition information of the main carrier unit of fixing one or more special time slot feedbacks; At other transmission time slots, obtain the absolute value of the difference of the MCS grade that MCS grade corresponding to the channel condition information of main carrier unit of feedback is fed back with special time slot and positive and negative situation, the channel condition information of acquisition main carrier unit.

Wherein, auxiliary carrier units state information acquisition unit 50 comprises:

First obtains subelement 51, for when the frequency band correlation of main carrier unit and auxiliary carrier units is stronger, the absolute value of the difference of the MCS grade that the MCS grade that the channel condition information of auxiliary carrier units of the MCS grade corresponding according to the channel condition information of main carrier unit and feedback is corresponding is corresponding with the channel condition information of main carrier unit and positive and negative situation, obtain the channel condition information of auxiliary carrier units; And/or

Second obtains subelement 52, for when the frequency band correlation of main carrier unit and auxiliary carrier units is more weak, obtains in MCS grade corresponding to the channel condition information of the auxiliary carrier units of fixing one or more special time slot feedbacks; At other transmission time slots, obtain the absolute value of the difference of the MCS grade that MCS grade corresponding to the channel condition information of auxiliary carrier units of feedback and special time slot feed back and positive and negative situation, obtain the channel condition information of auxiliary carrier units.

Wherein, unit of sub-carriers state information acquisition unit 60 specifically for:

The absolute value of the MCS grade of each subcarrier of current time of the MCS grade corresponding according to the channel condition information of previous moment main carrier unit and feedback and the difference of the MCS grade of main carrier unit and positive and negative situation, obtain the channel condition information of multiple subcarrier in current time main carrier unit;

The absolute value of the MCS grade of each subcarrier of current time of the MCS grade corresponding according to the channel condition information of the auxiliary carrier units of previous moment and feedback and the difference of the MCS grade of auxiliary carrier units and positive and negative situation, obtain the channel condition information of multiple subcarrier in the auxiliary carrier units of current time.

The above-mentioned terminal equipment that the application of the invention provides, when multi-carrier polymerizing, by the mode of difference quantization encoding, the channel condition information of multiple subcarrier in multiple subcarrier in auxiliary carrier units, main carrier unit and described auxiliary carrier units is fed back, saved overhead bit required in the information feedback of multiple carrier units.

Such as, when multi-carrier polymerizing, when feeding back according to the broad-band channel status information feedback mode of existing LTE system, need (5 × N) bit, N is the carrier units quantity of polymerization.When adopting differential feedback mode provided by the invention, for the channel condition information of main carrier unit and auxiliary carrier units, if differential quantization bit numerical digit is 3 bits, then need (3 × N+2) bit.Compared with independent broadband feedback, the expense of (2 × N-2) bit can be saved.For main carrier unit and auxiliary carrier units sub-carriers location mode information, Uplink Shared Channel no longer needs the broad-band channel state information transmitting current time, therefore compared with prior art can save the expense of (5 × N) bit.

Through the above description of the embodiments, those skilled in the art can be well understood to the present invention can by hardware implementing, and the mode that also can add necessary general hardware platform by software realizes.Based on such understanding, technical scheme of the present invention can embody with the form of software product, it (can be CD-ROM that this software product can be stored in a non-volatile memory medium, USB flash disk, portable hard drive etc.) in, comprise some instructions and perform method described in each embodiment of the present invention in order to make a computer equipment (can be personal computer, server, or the network equipment etc.).

It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, the unit in accompanying drawing or flow process might not be that enforcement the present invention is necessary.

It will be appreciated by those skilled in the art that the unit in the device in embodiment can carry out being distributed in the device of embodiment according to embodiment description, also can carry out respective change and be arranged in the one or more devices being different from the present embodiment.The unit of above-described embodiment can merge into a unit, also can split into multiple subelement further.

The invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.

Claims (14)

1. a feedback method for channel condition information, is characterized in that, comprising:

Physically in row control channel PUCCH, the channel condition information of main carrier unit is fed back, and fed back by the channel condition information of mode to auxiliary carrier units of difference quantization encoding;

Physically in row shared channel PUSCH, according to the difference of the channel condition information of multiple subcarrier in described main carrier unit and the channel condition information of described main carrier unit, by the mode of difference quantization encoding, the channel condition information of multiple subcarrier in described main carrier unit is fed back; According to the difference of the channel condition information of multiple subcarrier in described auxiliary carrier units and the channel condition information of described auxiliary carrier units, by the mode of difference quantization encoding, the channel condition information of multiple subcarrier in described auxiliary carrier units is fed back;

Wherein, described channel condition information is represented by modulating-coding form MCS grade;

The described channel condition information of mode to described auxiliary carrier units by difference quantization encoding feeds back, and comprising:

When the frequency band correlation of described main carrier unit and auxiliary carrier units is strong, the channel condition information of mode to auxiliary carrier units of the difference quantization encoding of hybrid feedback is used to feed back, concrete: the difference obtaining MCS grade corresponding to the channel condition information of the auxiliary carrier units MCS grade corresponding with the channel condition information of main carrier unit, the absolute value of described difference and the positive and negative situation bit respectively by length-specific is fed back;

When the frequency band correlation of described main carrier unit and auxiliary carrier units is weak, the channel condition information of mode to auxiliary carrier units of the difference quantization encoding of hybrid feedback is used to feed back, concrete: at fixing one or more special time slots, feed back the MCS grade that the channel condition information of described auxiliary carrier units is corresponding; At other transmission time slots, obtain the difference of the MCS grade that MCS grade corresponding to the channel condition information of described auxiliary carrier units and described special time slot feed back, the absolute value of described difference and the positive and negative situation bit respectively by length-specific is fed back;

Wherein, the described difference according to the channel condition information of multiple subcarrier in described main carrier unit and the channel condition information of described main carrier unit, by the mode of difference quantization encoding, the channel condition information of multiple subcarrier in described main carrier unit is fed back, comprising:

The MCS grade that the channel condition information of the MCS grade corresponding according to the channel condition information of previous moment main carrier unit and the multiple subcarrier of current time is corresponding, obtain the difference of the MCS grade of current time each subcarrier and the MCS grade of main carrier unit, the absolute value of described difference and the positive and negative situation bit respectively by length-specific is fed back.

2. the method for claim 1, is characterized in that,

The described difference according to the channel condition information of multiple subcarrier in described auxiliary carrier units and the channel condition information of described auxiliary carrier units, by the mode of difference quantization encoding, the channel condition information of multiple subcarrier in described auxiliary carrier units is fed back, comprising:

The MCS grade that the channel condition information of the MCS grade corresponding according to the channel condition information of the auxiliary carrier units of previous moment and the multiple subcarrier of current time is corresponding, obtain the difference of the MCS grade of current time each subcarrier and the MCS grade of auxiliary carrier units, the absolute value of described difference and the positive and negative situation bit respectively by length-specific is fed back.

3. method as claimed in claim 1 or 2, it is characterized in that, the described channel condition information to main carrier unit carries out feedback and comprises:

In PUCCH, the coding by regular length or the channel condition information of mode to main carrier unit by difference quantization encoding feed back.

4. method as claimed in claim 3, is characterized in that, described in PUCCH, carries out feedback comprise by the mode of difference quantization encoding to the channel condition information of main carrier unit:

At fixing one or more special time slots, feed back the MCS grade that the channel condition information of described main carrier unit is corresponding; At other transmission time slots, obtain the difference of the MCS grade that MCS grade corresponding to the channel condition information of described main carrier unit and described special time slot feed back, the absolute value of described difference and the positive and negative situation bit respectively by length-specific is fed back.

5. an acquisition methods for channel condition information, is characterized in that, comprising:

Physically in row control channel PUCCH, according to the channel condition information of the main carrier unit of feedback, obtain the channel condition information of main carrier unit; According to the channel condition information of the auxiliary carrier units that the mode by difference quantization encoding is fed back, obtain the channel condition information of auxiliary carrier units;

Physically in row shared channel PUSCH, according to the channel condition information of multiple subcarrier in the channel condition information of main carrier unit and the described main carrier unit that fed back by the mode of difference quantization encoding, obtain the channel condition information of multiple subcarrier in described main carrier unit; According to the channel condition information of multiple subcarrier in the channel condition information of auxiliary carrier units and the described auxiliary carrier units that fed back by the mode of difference quantization encoding, obtain the channel condition information of multiple subcarrier in described auxiliary carrier units;

Wherein, described channel condition information is represented by modulating-coding form MCS grade;

The channel condition information of the auxiliary carrier units that described basis is fed back by the mode of difference quantization encoding, obtains the channel condition information of auxiliary carrier units, comprising:

When the frequency band correlation of described main carrier unit and auxiliary carrier units is strong, the absolute value of the difference of the MCS grade that the MCS grade that the channel condition information of auxiliary carrier units of the MCS grade corresponding according to the channel condition information of main carrier unit and feedback is corresponding is corresponding with the channel condition information of main carrier unit and positive and negative situation, obtain the channel condition information of auxiliary carrier units; Or

When the frequency band correlation of described main carrier unit and auxiliary carrier units is weak, obtain in MCS grade corresponding to the channel condition information of the described auxiliary carrier units of fixing one or more special time slots feedbacks; At other transmission time slots, obtain the absolute value of the difference of the MCS grade that MCS grade corresponding to the channel condition information of described auxiliary carrier units of feedback and described special time slot feed back and positive and negative situation, obtain the channel condition information of auxiliary carrier units;

Wherein, the channel condition information of multiple subcarrier in the described channel condition information according to main carrier unit and the described main carrier unit that fed back by the mode of difference quantization encoding, obtain the channel condition information of multiple subcarrier in described main carrier unit, comprising:

The absolute value of the MCS grade of each subcarrier of current time of the MCS grade corresponding according to the channel condition information of previous moment main carrier unit and feedback and the difference of the MCS grade of main carrier unit and positive and negative situation, obtain the channel condition information of multiple subcarrier in main carrier unit described in current time.

6. method as claimed in claim 5, is characterized in that,

The channel condition information of multiple subcarrier in the described channel condition information according to auxiliary carrier units and the described auxiliary carrier units that fed back by the mode of difference quantization encoding, is obtained the channel condition information of multiple subcarrier in described auxiliary carrier units, comprising:

The absolute value of the MCS grade of each subcarrier of current time of the MCS grade corresponding according to the channel condition information of the auxiliary carrier units of previous moment and feedback and the difference of the MCS grade of auxiliary carrier units and positive and negative situation, obtain the channel condition information of multiple subcarrier in auxiliary carrier units described in current time.

7. the method as described in claim 5 or 6, is characterized in that, the channel condition information of the described main carrier unit according to feedback, the channel condition information of acquisition main carrier unit comprise:

In PUCCH, according to by the coding of regular length or the channel condition information of main carrier unit that fed back by the mode of difference quantization encoding, obtain the channel condition information of main carrier unit.

8. method as claimed in claim 7, it is characterized in that, described in PUCCH, according to by the coding of regular length or the channel condition information of main carrier unit that fed back by the mode of difference quantization encoding, the channel condition information obtaining main carrier unit comprises:

Obtain in MCS grade corresponding to the channel condition information of the described main carrier unit of fixing one or more special time slot feedbacks; At other transmission time slots, obtain the absolute value of the difference of the MCS grade that MCS grade corresponding to the channel condition information of described main carrier unit of feedback is fed back with described special time slot and positive and negative situation, the channel condition information of acquisition main carrier unit.

9. a terminal equipment, is characterized in that, comprising:

Main carrier location mode information feedback unit, in PUCCH, feeds back the channel condition information of main carrier unit;

Auxiliary carrier units status information feedback unit, in PUCCH, is fed back by the channel condition information of mode to auxiliary carrier units of difference quantization encoding;

Unit of sub-carriers status information feedback unit, for in PUSCH, according to the difference of the channel condition information of multiple subcarrier in described main carrier unit and the channel condition information of described main carrier unit, by the mode of difference quantization encoding, the channel condition information of multiple subcarrier in described main carrier unit is fed back; According to the difference of the channel condition information of multiple subcarrier in described auxiliary carrier units and the channel condition information of described auxiliary carrier units, by the mode of difference quantization encoding, the channel condition information of multiple subcarrier in described auxiliary carrier units is fed back;

Wherein, described channel condition information is represented by modulating-coding form MCS grade;

Described auxiliary carrier units status information feedback unit comprises:

First feedback subelement, for when the frequency band correlation of described main carrier unit and auxiliary carrier units is strong, the channel condition information of mode to auxiliary carrier units of the difference quantization encoding of hybrid feedback is used to feed back, concrete: the difference obtaining MCS grade corresponding to the channel condition information of the auxiliary carrier units MCS grade corresponding with the channel condition information of main carrier unit, the absolute value of described difference and the positive and negative situation bit respectively by length-specific is fed back; And/or

Second feedback subelement, for when the frequency band correlation of described main carrier unit and auxiliary carrier units is weak, the channel condition information of mode to auxiliary carrier units of the difference quantization encoding of hybrid feedback is used to feed back, concrete: at fixing one or more special time slots, feed back the MCS grade that the channel condition information of described auxiliary carrier units is corresponding; At other transmission time slots, obtain the difference of the MCS grade that MCS grade corresponding to the channel condition information of described auxiliary carrier units and described special time slot feed back, the absolute value of described difference and the positive and negative situation bit respectively by length-specific is fed back;

Wherein, described unit of sub-carriers status information feedback unit specifically for:

The MCS grade that the channel condition information of the MCS grade corresponding according to the channel condition information of previous moment main carrier unit and the multiple subcarrier of current time is corresponding, obtain the difference of the MCS grade of current time each subcarrier and the MCS grade of main carrier unit, the absolute value of described difference and the positive and negative situation bit respectively by length-specific is fed back.

10. terminal equipment as claimed in claim 9, is characterized in that, described unit of sub-carriers status information feedback unit also for:

The MCS grade that the channel condition information of the MCS grade corresponding according to the channel condition information of the auxiliary carrier units of previous moment and the multiple subcarrier of current time is corresponding, obtain the difference of the MCS grade of current time each subcarrier and the MCS grade of auxiliary carrier units, the absolute value of described difference and the positive and negative situation bit respectively by length-specific is fed back.

11. terminal equipments as described in claim 9 or 10, is characterized in that, described main carrier location mode information feedback unit, specifically for:

In PUCCH, fed back by the channel condition information of coding to main carrier unit of regular length; Or fed back by the channel condition information of mode to main carrier unit of difference quantization encoding, concrete: at fixing one or more special time slots, to feed back the MCS grade that the channel condition information of described main carrier unit is corresponding; At other transmission time slots, obtain the difference of the MCS grade that MCS grade corresponding to the channel condition information of described main carrier unit and described special time slot feed back, the absolute value of described difference and the positive and negative situation bit respectively by length-specific is fed back.

12. 1 kinds of network equipments, is characterized in that, comprising:

Main carrier location mode information acquisition unit, in PUCCH, according to the channel condition information of the main carrier unit of feedback, obtains the channel condition information of main carrier unit;

Auxiliary carrier units state information acquisition unit, in PUCCH, according to the channel condition information of the auxiliary carrier units that the mode by difference quantization encoding is fed back, obtains the channel condition information of auxiliary carrier units;

Unit of sub-carriers state information acquisition unit, for in PUSCH, according to the channel condition information of multiple subcarrier in the channel condition information of main carrier unit and the described main carrier unit that fed back by the mode of difference quantization encoding, obtain the channel condition information of multiple subcarrier in described main carrier unit; According to the channel condition information of multiple subcarrier in the channel condition information of auxiliary carrier units and the described auxiliary carrier units that fed back by the mode of difference quantization encoding, obtain the channel condition information of multiple subcarrier in described auxiliary carrier units;

Wherein, described channel condition information is represented by modulating-coding form MCS grade;

Described auxiliary carrier units state information acquisition unit comprises:

First feedback subelement, for when the frequency band correlation of described main carrier unit and auxiliary carrier units is strong, the absolute value of the difference of the MCS grade that the MCS grade that the channel condition information of auxiliary carrier units of the MCS grade corresponding according to the channel condition information of main carrier unit and feedback is corresponding is corresponding with the channel condition information of main carrier unit and positive and negative situation, obtain the channel condition information of auxiliary carrier units; And/or

Second feedback subelement, for when the frequency band correlation of described main carrier unit and auxiliary carrier units is weak, obtains in MCS grade corresponding to the channel condition information of the described auxiliary carrier units of fixing one or more special time slot feedbacks; At other transmission time slots, obtain the absolute value of the difference of the MCS grade that MCS grade corresponding to the channel condition information of described auxiliary carrier units of feedback and described special time slot feed back and positive and negative situation, obtain the channel condition information of auxiliary carrier units;

Wherein, described unit of sub-carriers state information acquisition unit specifically for:

The absolute value of the MCS grade of each subcarrier of current time of the MCS grade corresponding according to the channel condition information of previous moment main carrier unit and feedback and the difference of the MCS grade of main carrier unit and positive and negative situation, obtain the channel condition information of multiple subcarrier in main carrier unit described in current time.

13. network equipments as claimed in claim 12, is characterized in that, described unit of sub-carriers state information acquisition unit also for:

The absolute value of the MCS grade of each subcarrier of current time of the MCS grade corresponding according to the channel condition information of the auxiliary carrier units of previous moment and feedback and the difference of the MCS grade of auxiliary carrier units and positive and negative situation, obtain the channel condition information of multiple subcarrier in auxiliary carrier units described in current time.

14. network equipments as described in claim 12 or 13, is characterized in that, described main carrier location mode information feedback unit, specifically for:

In PUCCH, according to the channel condition information of the main carrier unit that the coded system by regular length is fed back, obtain the channel condition information of main carrier unit; Or the channel condition information of the main carrier unit to feed back according to the mode by difference quantization encoding, obtain the channel condition information of main carrier unit, concrete: to obtain in MCS grade corresponding to the channel condition information of the described main carrier unit of fixing one or more special time slot feedbacks; At other transmission time slots, obtain the absolute value of the difference of the MCS grade that MCS grade corresponding to the channel condition information of described main carrier unit of feedback is fed back with described special time slot and positive and negative situation, the channel condition information of acquisition main carrier unit.