CN102014083B

CN102014083B - Method, system and device for channel estimation

Info

Publication number: CN102014083B
Application number: CN 200910092807
Authority: CN
Inventors: 杨宇; 李晓卡
Original assignee: China Academy of Telecommunications Technology CATT
Current assignee: China Academy of Telecommunications Technology CATT; Datang Mobile Communications Equipment Co Ltd
Priority date: 2009-09-08
Filing date: 2009-09-08
Publication date: 2013-07-10
Anticipated expiration: 2029-09-08
Also published as: CN102014083A

Abstract

The embodiment of the invention relates to a wireless communication technology, in particular to a method, a system and a device for channel estimation. The method, the system and the device are used for concentrating transmitting power to part of channel estimation windows, thereby improving the channel estimation precision of a receiving end. The method comprises the following steps that sending equipment sends a data stream comprising all pilot frequencies in a first pilot frequency set, wherein the first pilot frequency set is formed by part of pilot frequencies in all the pilot frequencies corresponding to the data stream; the receiving end carries out channel estimation on the received data stream according to all the pilot frequencies in a second pilot frequency set, wherein pilot frequency identifications corresponding to the pilot frequencies in the first pilot frequency set are the same as the pilot frequency identifications corresponding to the pilot frequencies in the second pilot frequency set. By adopting the method, the power of each pilot frequency can be improved, the noise resistance and the interference resistance are improved and the channel estimation precision is improved.

Description

A kind of mthods, systems and devices of channel estimating

Technical field

The present invention relates to wireless communication technology, particularly a kind of mthods, systems and devices of channel estimating.

Background technology

In the existing standard of TDD (Time division duplex, time division duplex), always have 128 basic midamble sign indicating numbers (basic midamble), 1 basic midamble sign indicating number of each cell allocation.

The midamble sign indicating number is training sequence, is used for receiving terminal and carries out channel estimating, power control, adjustment synchronously, wave beam forming etc.The midamble sign indicating number sends in the middle of each conventional time slot, and length is 144 chips.The midamble sign indicating number that the different UEs (user terminal) of the identical time slot in same residential quarter is used is produced after cyclic shift by same basic midamble sign indicating number, i.e. the midamble shift code.The transmitting power of various piece need be consistent in time slot, and namely the transmitting power of the transmitting power of midamble part and data division is identical, does not carry out spread spectrum and scrambling.

The midamble sign indicating number method of salary distribution of stipulating in the agreement has Default (acquiescence) method of salary distribution, Common (public) method of salary distribution, Specific (special use) method of salary distribution and the Special Default method of salary distribution at present.

Wherein, Default (acquiescence) method of salary distribution:

Each midamble shift code and code channel resource are given tacit consent to binding.For example when amount of displacement is 16 chips, a basic midamble sign indicating number can derive 8 midamble shift codes altogether, each midamble shift code correspondence 2 SF (Spreading Factor so, spreading factor)=16 code channel, the channel code of same code character can not be distributed to different UEs and use, and namely different UEs can not be used identical midamble shift code.

The Special Default method of salary distribution:

On the basis of the default method of salary distribution, corresponding relation between midamble sign indicating number and the channel code is divided into two kinds of pattern (pattern), being about to the base station is that the corresponding midamble sign indicating number of code channel resource that UE distributes is divided into 2 groups by the odd even mode, is called pattern 1 and pattern 2.These two pattern can be respectively applied to each data flow of double-current UE, also can be used for two UE of pairing among the MU-MIMO (Multi User Multiple InputMultiple Output, multi-user's multiple-input and multiple-output).

The applicant finds in existing system, when the base station is a plurality of channel estimation windows of each distribution of flows of terminal according to default or special default mode, when transmitting data between base station and the terminal, if transmitting terminal in a plurality of windows, can reduce the receiving terminal precision of channel estimation with midamble sign indicating number transmit power allocations partly.

Summary of the invention

The embodiment of the invention provides a kind of mthods, systems and devices of channel estimating, in order to transmitting power is focused in the part pilot tone, thereby has improved the receiving terminal precision of channel estimation.

The method of a kind of channel estimating that the embodiment of the invention provides, this method comprises:

Transmitting apparatus sends the data flow that comprises all pilot tones in first pilot set, the set that the part pilot group becomes in all pilot tones that described first pilot set is this data flow correspondence;

Receiving terminal carries out channel estimating according to all pilot tones in second pilot set of determining to the data flow that receives;

Wherein, the pilot tone of the pilot tone correspondence in the pilot tone of the pilot tone correspondence in first pilot set sign and second pilot set identifies identical.

The system of a kind of channel estimating that the embodiment of the invention provides, this system comprises:

Transmitting apparatus is used for the data flow that transmission comprises all pilot tones of first pilot set, the set that the part pilot group becomes in all pilot tones that described first pilot set is this data flow correspondence;

Receiving equipment is used for according to all pilot tones of second pilot set of determining the data flow that receives being carried out channel estimating;

A kind of transmitting apparatus that the embodiment of the invention provides, this transmitting apparatus comprises:

The first pilot tone determination module is for all pilot tones of determining first pilot set;

Sending module is used for the data flow that transmission comprises all pilot tones of first pilot set, the set that the part pilot group becomes in all pilot tones that described first pilot set is this data flow correspondence;

Wherein, the pilot tone of the pilot tone correspondence in the pilot tone of the pilot tone correspondence in described first pilot set sign and second pilot set identifies identical; Pilot tone in second pilot set is that receiving equipment carries out the used pilot tone of channel estimating to the data flow that receives.

A kind of receiving equipment that the embodiment of the invention provides, this receiving equipment comprises:

The second pilot tone determination module is for all pilot tones of determining second pilot set;

Receiver module is used for according to all pilot tones of second pilot set of determining the data flow that receives being carried out channel estimating;

Wherein, the pilot tone of the pilot tone correspondence in the pilot tone of the pilot tone correspondence in first pilot set sign and second pilot set identifies identical; Pilot tone in described first pilot set is the pilot tone that comprises in the data flow of described transmitting apparatus transmission.

Embodiment of the invention transmitting apparatus sends the data flow comprise all pilot tones in first pilot set, and first pilot set is the set that the part pilot group becomes in all pilot tones of this data flow correspondence; Receiving terminal carries out channel estimating according to all pilot tones in second pilot set of determining to the data flow that receives; The pilot tone of the pilot tone correspondence in the pilot tone of the pilot tone correspondence in first pilot set sign and second pilot set identifies identical.Because the base station is a plurality of pilot tones of each distribution of flows of terminal, when transmitting data between base station and the terminal, under the certain prerequisite of total transmitting power, transmitting terminal focuses on transmitting power on the part pilot tone, receiving terminal selects the part pilot tone to carry out channel estimating from a plurality of pilot tones of determining, thereby improved the power of each pilot tone, increased antinoise and interference capability, improved precision of channel estimation.

Description of drawings

Fig. 1 is the system configuration schematic diagram of embodiment of the invention channel estimating;

Fig. 2 is the structural representation of embodiment of the invention transmitting apparatus;

Fig. 3 is the structural representation of embodiment of the invention receiving equipment;

Fig. 4 is the method flow schematic diagram of embodiment of the invention channel estimating.

Embodiment

Wherein, the embodiment of the invention can be applied in TDD (Time division duplex, the time division duplex) system, also can be applied in other communication system of having used dedicated pilot.

According to system's difference of using, the form of pilot tone also can be different, and in the TDD system, pilot tone is exactly the channel estimation window that midamble sign indicating number allocative decision is determined.

Below in conjunction with Figure of description the embodiment of the invention is described in further detail.

As shown in Figure 1, the system of embodiment of the invention channel estimating comprises: transmitting apparatus 10 and receiving equipment 20.

Transmitting apparatus 10 be used for to send the data flow of all pilot tones that comprise first pilot set, and wherein first pilot set is the set that the part pilot group becomes in all pilot tones of this data flow correspondence.

Receiving equipment 20 is used for according to all pilot tones of second pilot set of determining the data flow that receives being carried out channel estimating.

Because the pilot tone that transmitting apparatus 10 sends can have channel fading information through behind the channel, so after receiving equipment 20 carries out channel estimating according to all pilot tones in second pilot set to the data flow that receives, just can receive business datum according to the channel impulse response that estimates.

Each pilot tone has unique pilot tone sign, and first pilot set is all identical with all pilot tones in second pilot set, such as pilot tone 1, pilot tone 2 and pilot tone 3 are arranged in first pilot set, pilot tone 1, pilot tone 2 and pilot tone 3 is arranged also in second pilot set then.

Wherein, transmitting apparatus 10 can be base station or user terminal, and receiving equipment 20 can be user terminal or base station, describes respectively below.

If mode one transmitting apparatus 10 is base stations, receiving equipment 20 is user terminals.That is to say, carry out downlink transfer.

At this moment transmitting apparatus 10 is determined all pilot tones of this data flow according to the code channel resource that is the data flow of receiving equipment 20 distribution, and notifies the code channel resource of this data flow of receiving equipment 20 distribution by control channel;

Accordingly, receiving equipment 20 is determined all pilot tones of this data flow according to the code channel resource of the data flow of transmitting apparatus distribution.

Concrete, after the base station is terminal distribution time-slot code channel resource, according to Default in the existing standard or the Special Default midamble sign indicating number method of salary distribution, corresponding relation by code channel resource and midamble window, when as each basic midamble sign indicating number 8 displacements being arranged, each window correspondence the code channel of 2 SF=16, can learn used midamble window.

If between transmitting apparatus 10 and the receiving equipment 20 a plurality of data flow are arranged.Such as the scheduling of SU-MIMO double fluid, then transmitting apparatus 10 can be determined all pilot tones of each data flow respectively, and notice receiving equipment 20;

Accordingly, receiving equipment 20 can be determined all pilot tones of each data flow.

Be example with the TDD system, during such as the scheduling of SU-MIMO double fluid, descending double-current transfer of data can be carried out to user terminal in the base station, the base station can be the time-slot code channel resource of terminal distribution by the control channel notice, according to the Special Default midamble sign indicating number method of salary distribution in the existing standard, whole windows of code channel resource correspondence are divided into 2 pattern by the odd even mode, each stream uses a pattern, the code channel of 16 SF=16 corresponding 8 windows altogether for example, data flow 1 adopts window numbers 1,3,5,7, and data flow 2 adopts windows numbers 2,4,6,8.Transmitting terminal uses the window that comprises among the corresponding pattern when each data flow of emission, the window among the different pattern of receiving terminal utilization goes each data flow is carried out channel estimating and data reception.

If transmitting apparatus 10 carries out downlink data transmission to a plurality of user terminals on identical physical resource, divide MU-MIMO scheduling such as sky, then transmitting apparatus 10 can be determined all pilot tones of each receiving equipment 20 respectively, and notice receiving equipment 20;

Accordingly, each receiving equipment 20 can be determined all pilot tones of self each data flow.

Be example with the TDD system, divide MU-MIMO scheduling such as sky, then downlink data transmission can be carried out to a plurality of terminals in the base station on identical physical resource, the code channel of 16 SF=16 corresponding 8 windows altogether for example, and a plurality of empty branch terminals are used the different window in these 8 windows.Do empty the branch as 2 terminals, then each terminal is used 4 windows wherein, and namely terminal 1 adopts window numbers 1,3,5,7, and terminal 2 adopts windows numbers 2,4,6,8.

Wherein, transmitting apparatus 10 according to predefined selecting sequence and quantity, selects the part pilot tone as the pilot tone in first pilot set from all pilot tones of this data flow of self determining when determining to carry the part pilot tone in data flow.

Predefined selecting sequence includes but not limited to a kind of in the following order:

Arrange from big to small according to the pilot tone sign;

Arrange from small to large according to the pilot tone sign.

The quantity of selecting can be set as required, such as 1 of selection from all pilot tones or more than 1.

When implementing, in the transmitting apparatus 10 in predefined selecting sequence and quantity and the receiving equipment 20 predefined selecting sequence identical with quantity.

Specifically can inform what order and quantity receiving equipment adopts, and also can stipulate in agreement by transmitting apparatus 10, select the minimum pilot tone of pilot tone sign such as acquiescence.

In specific implementation process, transmitting apparatus 10 can adopt physical layer signaling notice receiving equipment to adopt the part pilot tone to carry out channel estimating, such as representing that with 1 bit then can set for: the part pilot tone is adopted in " 1 " expression; Whole pilot tones are adopted in " 0 " expression.

Accordingly, receiving equipment 20 also can select the part pilot tone as the pilot tone in second pilot set from all pilot tones of self established data stream according to predefined selecting sequence and quantity after receiving the notice that adopts the part pilot tone.

Further, transmitting apparatus 10 can also carry the pilot tone sign of the pilot tone correspondence in first pilot set in the notice that adopts the part pilot tone;

Accordingly, receiving equipment 20 is according to the pilot tone sign of carrying in the notice, selects the part pilot tone as the pilot tone in second pilot set from all pilot tones of self established data stream.

Receiving equipment 20 just can be known the pilot tone sign that whole pilot tones are corresponding according to window in the time-slot code channel resource of base station assigns and the standard and the corresponding relation of code channel resource.

Be example with the TDD system, high-rise informing base station and terminal adopt default mode or the special defaultmidamble sign indicating number method of salary distribution.When dispatch terminal the base station, can indicate whether adopt new midamble sign indicating number allocative decision (scheme of the distribution pilot tone that the embodiment of the invention proposes) when the business data transmission by physical layer signaling.

Wherein, physical layer signaling can carry by the control channel when the base station scheduling terminal, can be newly-increased signaling bit, or the signaling bit state that is not used.

Dispatch terminal the base station, be the physical resource of its distribution by control channel notice terminal, and carry out the transmission of Traffic Channel according to the timing relationship that has now in the standard, for the physical resource of terminal distribution comprises time slot, code channel etc.

Also having a kind of mode is by RNC (Radio Network Controller, radio network controller) notice transmitting apparatus 10 and receiving equipment 20, and transmitting apparatus 10 just can not send the notice that adopts the part pilot tone to receiving equipment like this.

Concrete, RNC is after notice transmitting apparatus 10 and receiving equipment 20 employing default modes or special default mode, and further notice transmitting apparatus 10 and receiving equipment 20 adopt the part pilot tone;

Further, RNC also can carry the selection pilot frequency information in the notice that adopts the part pilot tone, is used for informing what pilot tone transmitting apparatus 10 and receiving equipment 20 select.

Accordingly, transmitting apparatus 10 receives the notice of the employing part pilot tone of RNC transmission;

In the notice that adopts the part pilot tone, comprise when selecting pilot frequency information, according to selecting pilot frequency information, from all corresponding pilot tones of self established data stream, select the part pilot tone as the pilot tone in first pilot set;

In the notice that adopts the part pilot tone, do not comprise when selecting pilot frequency information, according to predefined selecting sequence and quantity, from all corresponding pilot tones of self established data stream, select the part pilot tone as the pilot tone in first pilot set.

Receiving equipment 20 receives the notice of the employing part pilot tone of RNC transmission;

In the notice that adopts the part pilot tone, comprise when selecting pilot frequency information, according to selecting pilot frequency information, from all corresponding pilot tones of established data stream, select the part pilot tone as the pilot tone in second pilot set;

In the notice that adopts the part pilot tone, do not comprise when selecting pilot frequency information, according to selecting sequence and quantity, from all corresponding pilot tones of established data stream, select the part pilot tone as the pilot tone in second pilot set.

If mode two transmitting apparatus 10 are user terminals, receiving equipment 20 is base stations.That is to say, carry out uplink.

At this moment receiving equipment 20 is determined all pilot tones of this data flow according to the code channel resource that is the data flow of transmitting apparatus 10 distribution, and notifies the code channel resource of this data flow of transmitting apparatus 10 distribution by control channel;

Accordingly, transmitting apparatus 10 is determined all pilot tones of this data flow according to the code channel resource of the data flow of receiving equipment distribution.

If between transmitting apparatus 10 and the receiving equipment 20 a plurality of data flow are arranged.Such as the scheduling of SU-MIMO (Single UserMultiple Input Multiple Output, single user's multiple-input and multiple-output) double fluid, then receiving equipment 20 can be determined all pilot tones of each data flow respectively, and notice receiving equipment 20;

Accordingly, transmitting apparatus 10 can be determined all pilot tones of each data flow.

If receiving equipment 20 carries out transmitting uplink data to a plurality of user terminals on identical physical resource, divide MU-MIMO scheduling such as sky, then receiving equipment 20 can be determined all pilot tones of each transmitting apparatus 10 respectively, and notice transmitting apparatus 10;

Accordingly, each transmitting apparatus 10 can be determined all pilot tones of self each data flow.

Wherein, receiving equipment 20 according to predefined selecting sequence and quantity, selects the part pilot tone as the pilot tone in second pilot set from all pilot tones of this data flow of self determining when determining to carry the part pilot tone in data flow.

Arrange from big to small according to the pilot tone sign;

Arrange from small to large according to the pilot tone sign.

The quantity of selecting can be set as required.

In specific implementation process, receiving equipment 20 adopts physical layer signaling notice transmitting apparatus to adopt the part pilot tone to carry out data stream transmission, such as representing that with 1 bit then can set for: the part pilot tone is adopted in " 1 " expression; Whole pilot tones are adopted in " 0 " expression.

Accordingly, transmitting apparatus 10 also can select the part pilot tone as the pilot tone in first pilot set from all pilot tones of self established data stream according to predefined selecting sequence and quantity after receiving the notice that adopts the part pilot tone.

Specifically can inform what order and quantity transmitting apparatus adopts, and also can stipulate in agreement by receiving equipment 20, select the minimum pilot tone of pilot tone sign such as acquiescence.

Further, receiving equipment 20 can also carry the pilot tone sign of the pilot tone correspondence in second pilot set in the notice that adopts the part pilot tone;

Accordingly, transmitting apparatus 10 is according to the pilot tone sign of carrying in the notice, selects the part pilot tone as the pilot tone in first pilot set from all pilot tones of self established data stream.

Be example with the TDD system, high-rise informing base station and terminal adopt default mode or the special defaultmidamble sign indicating number method of salary distribution, when dispatch terminal the base station, can indicate whether adopt new midamble sign indicating number allocative decision (scheme of the distribution pilot tone that the embodiment of the invention proposes) when the business data transmission by physical layer signaling.

Also having a kind of mode is that concrete content is identical with the particular content of RNC advice method in the mode one, does not repeat them here by RNC notice transmitting apparatus 10 and receiving equipment 20.

The notice that adopts the part pilot tone is to be sent by base station or RNC, can stipulate in agreement, also can be consulted to determine by network side.

As shown in Figure 2, embodiment of the invention transmitting apparatus comprises: the first pilot tone determination module 100 and sending module 110.

The first pilot tone determination module 100 is for all pilot tones of determining first pilot set;

Sending module 110 is used for the data flow that transmission comprises all pilot tones of first pilot set, is used to indicate receiving equipment and according to all pilot tones in second pilot set data flow of receiving is carried out channel estimating.

Wherein, first pilot set is the set that the part pilot group becomes in all pilot tones of this data flow correspondence; The pilot tone of the pilot tone correspondence in the pilot tone of the pilot tone correspondence in first pilot set sign and second pilot set identifies identical; Pilot tone in second pilot set is that receiving equipment carries out the used pilot tone of channel estimating to the data flow that receives.

Wherein, transmitting apparatus can be base station or user terminal, describes respectively below.

Mode one, transmitting apparatus are the base stations.

The first pilot tone determination module 100 is determined all pilot tones of this data flow according to the code channel resource of the data flow of distributing for receiving equipment, and notifies the code channel resource of this data flow of receiving terminal distribution by control channel.

If a plurality of data flow are arranged between transmitting apparatus and the receiving equipment.Such as the scheduling of SU-MIMO double fluid, then the first pilot tone determination module 100 can be determined all pilot tones of each data flow respectively, and the notice receiving equipment.

If transmitting apparatus carries out downlink data transmission to a plurality of user terminals on identical physical resource, divide MU-MIMO scheduling such as sky, then the first pilot tone determination module 100 can be determined all pilot tones of each receiving equipment respectively, and the notice receiving equipment.

Wherein, the first pilot tone determination module 100 according to predefined selecting sequence and quantity, selects the part pilot tone as the pilot tone in first pilot set from all pilot tones of this data flow of self determining when determining to carry the part pilot tone in data flow.

Arrange from big to small according to the pilot tone sign;

Arrange from small to large according to the pilot tone sign.

The quantity of selecting can be set as required

When implementing, in the transmitting apparatus in predefined selecting sequence and quantity and the receiving equipment predefined selecting sequence identical with quantity.

Specifically can inform what order and quantity receiving equipment adopts, and also can stipulate in agreement by the first pilot tone determination module 100, select the minimum pilot tone of pilot tone sign such as acquiescence.

Wherein, embodiment of the invention transmitting apparatus can also improve and comprise: the first pilot tone notification module 120.

The first pilot tone notification module 120 is used for adopting physical layer signaling notice receiving equipment to adopt the part pilot tone to carry out channel estimating.

Such as representing that with 1 bit then can set for: the part pilot tone is adopted in " 1 " expression; Whole pilot tones are adopted in " 0 " expression.

Further, the first pilot tone notification module 120 can also carry the pilot tone sign of the pilot tone correspondence in first pilot set in the notice that adopts the part pilot tone.

Be example with the TDD system, high-rise informing base station and terminal adopt default mode or the specialdefaultmidamble sign indicating number method of salary distribution, and the first pilot tone notification module 120 can indicate whether adopt new midamble sign indicating number allocative decision (scheme of the distribution pilot tone that the embodiment of the invention proposes) when the business data transmission by physical layer signaling.

Also having a kind of mode is by RNC notice transmitting apparatus and receiving equipment, does not so just need the first pilot tone notification module, the 120 notice receiving equipments in the transmitting apparatus.

Concrete, RNC is after notice transmitting apparatus and receiving equipment employing default mode or specialdefault mode, and further notice transmitting apparatus and receiving equipment adopt the part pilot tone;

Further, RNC also can carry the selection pilot frequency information in the notice that adopts the part pilot tone, is used for informing what pilot tone transmitting apparatus and receiving equipment select.

Accordingly, after the notice of the employing part pilot tone that the first pilot tone determination module, 100 reception RNC send, in the notice that adopts the part pilot tone, comprise when selecting pilot frequency information, according to selecting pilot frequency information, from all corresponding pilot tones of self established data stream, select the part pilot tone as the pilot tone in first pilot set;

Mode two, transmitting apparatus are user terminals.

The first pilot tone determination module 100 is determined all pilot tones of this data flow according to the code channel resource of the data flow of receiving equipment distribution.

If adopt the notice of part pilot tone to be sent by the base station:

The first pilot tone determination module 100 is being received the notice of carrying out data stream transmission from receiving equipment employing part pilot tone, and when not carrying the pilot tone sign in the notice, from all pilot tones of self established data stream, select the part pilot tone as the pilot tone in first pilot set according to predefined selecting sequence and quantity, wherein in the transmitter in predefined selecting sequence and quantity and the receiving equipment predefined selecting sequence identical with quantity;

Receiving the notice of carrying out data stream transmission from receiving equipment employing part pilot tone, and when carrying the pilot tone sign in the notice, according to the pilot tone sign of carrying in the notice, from all pilot tones of self established data stream, select the part pilot tone as the pilot tone in first pilot set.

If adopt the notice of part pilot tone to be sent by RNC:

The first pilot tone determination module 100 receives the notice of the employing part pilot tone of RNC transmission;

In the notice that adopts the part pilot tone, comprise when selecting pilot frequency information, from all corresponding pilot tones of self established data stream, select the part pilot tone as the pilot tone in first pilot set;

In the notice that adopts the part pilot tone, do not comprise when selecting pilot frequency information, according to predefined selecting sequence and quantity, from all corresponding pilot tones of self established data stream, select the part pilot tone as the pilot tone in first pilot set, wherein in the transmitter in predefined selecting sequence and quantity and the receiving equipment predefined selecting sequence identical with quantity.

As shown in Figure 3, embodiment of the invention receiving equipment comprises: the second pilot tone determination module 200 and receiver module 210.

The second pilot tone determination module 200 is for all pilot tones of determining second pilot set.

Receiver module 210 is used for according to all pilot tones of second pilot set of determining the data flow that receives being carried out channel estimating;

Wherein, the pilot tone of the pilot tone correspondence in the pilot tone of the pilot tone correspondence in first pilot set sign and second pilot set identifies identical; Pilot tone in first pilot set is the pilot tone that comprises in the data flow of transmitting apparatus transmission.

Because sending pilot tone, transmitting apparatus behind the experience channel, can have channel fading information, so after according to all pilot tones in second pilot set data flow that receives being carried out channel estimating, just can be according to the channel impulse response reception business datum that estimates.

Wherein, receiving equipment can be base station or user terminal, describes respectively below.

Mode one, receiving equipment are user terminals.

The second pilot tone determination module 200 is determined all pilot tones of this data flow according to the code channel resource of the data flow of transmitting apparatus distribution.

If adopt the notice of part pilot tone to be sent by the base station:

The second pilot tone determination module 200 is being received the notice of carrying out channel estimating from transmitting apparatus employing part pilot tone, and when not carrying the pilot tone sign in the notice, from all pilot tones of self established data stream, select the part pilot tone as the pilot tone in second pilot set according to predefined selecting sequence and quantity, wherein in the transmitter in predefined selecting sequence and quantity and the receiving equipment predefined selecting sequence identical with quantity;

Receiving the notice of carrying out channel estimating from transmitting apparatus employing part pilot tone, and when carrying the pilot tone sign in the notice, according to the pilot tone sign of carrying in the notice, from all pilot tones of self established data stream, select the part pilot tone as the pilot tone in second pilot set.

If adopt the notice of part pilot tone to be sent by RNC:

The second pilot tone determination module 200 receives the notice of the employing part pilot tone of RNC transmission;

In the notice that adopts the part pilot tone, do not comprise when selecting pilot frequency information, according to predefined selecting sequence and quantity, from all corresponding pilot tones of established data stream, select the part pilot tone as the pilot tone in second pilot set, wherein in the transmitter in predefined selecting sequence and quantity and the receiving equipment predefined selecting sequence identical with quantity.

Mode two, receiving equipment are the base stations.

The second pilot tone determination module 200 is determined all pilot tones of this data flow according to the code channel resource of the data flow of distributing for transmitting apparatus, and notifies the code channel resource of this data flow of transmitting terminal distribution by control channel.

If a plurality of data flow are arranged between transmitting apparatus and the receiving equipment.Such as the scheduling of SU-MIMO double fluid, then the second pilot tone determination module 200 can be determined all pilot tones of each data flow respectively, and the notice transmitting apparatus.

If receiving equipment carries out transmitting uplink data to a plurality of user terminals on identical physical resource, divide MU-MIMO scheduling such as sky, then the second pilot tone determination module 200 can be determined all pilot tones of each transmitting apparatus respectively, and the notice transmitting apparatus.

Wherein, the second pilot tone determination module 200 according to predefined selecting sequence and quantity, selects the part pilot tone as the pilot tone in second pilot set from all pilot tones of this data flow of self determining when determining to carry the part pilot tone in data flow.

Arrange from big to small according to the pilot tone sign;

Arrange from small to large according to the pilot tone sign.

The quantity of selecting can be set as required

Specifically can inform what order and quantity transmitting apparatus adopts, and also can stipulate in agreement by the second pilot tone determination module 200, select the minimum pilot tone of pilot tone sign such as acquiescence.

Wherein, embodiment of the invention transmitting apparatus can also improve and comprise: the second pilot tone notification module 220.

The second pilot tone determination module 200 is used for adopting physical layer signaling notice transmitting apparatus to adopt the part pilot tone to carry out data stream transmission.

Further, the second pilot tone notification module 22 can also carry the pilot tone sign of the pilot tone correspondence in second pilot set in the notice that adopts the part pilot tone.

Be example with the TDD system, high-rise informing base station and terminal adopt default mode or special default mode, and the second pilot tone notification module 220 can indicate whether adopt new midamble sign indicating number allocative decision (scheme of the distribution pilot tone that the embodiment of the invention proposes) when the business data transmission by physical layer signaling.

Also having a kind of mode is by RNC notice transmitting apparatus and receiving equipment, does not so just need the second pilot tone notification module, the 220 notice transmitting apparatus in the receiving equipment.

Further, RNC also can carry the selection pilot frequency information in the notice that adopts the part pilot tone, is used for informing what pilot tone transmitting apparatus selects.

Accordingly, the second pilot tone determination module 200 receives the notice of the employing part pilot tone of RNC transmission;

Need to prove that the module in embodiment of the invention transmitting apparatus and the receiving equipment can be put in the entity, uses respectively according to different transmission situations.

As shown in Figure 4, the method for embodiment of the invention channel estimating comprises the following steps:

Step 401, transmitting apparatus send the data flow that comprises all pilot tones in first pilot set, and first pilot set is the set that the part pilot group becomes in all pilot tones of this data flow correspondence.

Step 402, receiving terminal carry out channel estimating according to all pilot tones in second pilot set of determining to the data flow that receives.

Because sending pilot tone, transmitting apparatus behind the experience channel, can have the channel fading information attenuation, so in the step 402, after receiving equipment carries out channel estimating according to all pilot tones in second pilot set to the data flow that receives, just can receive business datum according to the channel impulse response that estimates.

Wherein, transmitting apparatus can be base station or user terminal, and receiving equipment can be user terminal or base station, describes respectively below.

If mode one transmitting apparatus is the base station, receiving equipment is user terminal.That is to say, carry out downlink transfer.

Can further include before the step 401:

Step a400, transmitting apparatus determine all pilot tones of this data flow according to the code channel resource of the data flow of distributing for receiving equipment, and the code channel resource of this data flow by the distribution of control channel notice receiving equipment.

The code channel resource of the data flow that step b400, receiving equipment distribute according to transmitting apparatus is determined all pilot tones of this data flow.

If a plurality of data flow are arranged between transmitting apparatus and the receiving equipment.Such as the scheduling of SU-MIMO double fluid, then transmitting apparatus can be determined all pilot tones of each data flow respectively among the step a400, and notifies receiving equipment 20;

Accordingly, receiving equipment can be determined all pilot tones of each data flow among the step b400.

If transmitting apparatus carries out downlink data transmission to a plurality of user terminals on identical physical resource, divide MU-MIMO scheduling such as sky, then transmitting apparatus can be determined all pilot tones of each receiving equipment respectively among the step a400, and notifies receiving equipment;

Accordingly, each receiving equipment can be determined all pilot tones of self each data flow among the step b400.

Wherein, can further include between step a400 and the step 401:

Transmitting apparatus according to predefined selecting sequence and quantity, selects the part pilot tone as the pilot tone in first pilot set from all pilot tones of this data flow of self determining when determining to carry the part pilot tone in data flow.

Arrange from big to small according to the pilot tone sign;

Arrange from small to large according to the pilot tone sign.

The quantity of selecting can be set as required, such as 1 in the whole pilot tones of selection or more than 1.

Specifically can inform what order and quantity receiving equipment adopts, and also can stipulate in agreement by transmitting apparatus, select the minimum pilot tone of pilot tone sign such as acquiescence.

In specific implementation process, transmitting apparatus can adopt physical layer signaling notice receiving equipment to adopt the part pilot tone to carry out channel estimating, such as representing that with 1 bit then can set for: the part pilot tone is adopted in " 1 " expression; Whole pilot tones are adopted in " 0 " expression.

Accordingly, receiving equipment also can select the part pilot tone as the pilot tone in second pilot set from all pilot tones of self established data stream according to predefined selecting sequence and quantity after receiving the notice that adopts the part pilot tone.

Further, transmitting apparatus can also carry the pilot tone sign of the pilot tone correspondence in first pilot set in the notice that adopts the part pilot tone;

Accordingly, receiving equipment is according to the pilot tone sign of carrying in the notice, selects the part pilot tone as the pilot tone in second pilot set from all pilot tones of self established data stream.

Receiving equipment just can be known the pilot tone sign that whole pilot tones are corresponding according to window in the time-slot code channel resource of base station assigns and the standard and the corresponding relation of code channel resource.

Be example with the TDD system, high-rise informing base station and terminal adopt default mode or special default mode, when dispatch terminal the base station, can indicate whether adopt new midamble sign indicating number allocative decision (scheme of the distribution pilot tone that the embodiment of the invention proposes) when the business data transmission by physical layer signaling.

Also having a kind of mode is by RNC notice transmitting apparatus and receiving equipment, and transmitting apparatus just can not send the notice that adopts the part pilot tone to receiving equipment like this.

Concrete, can further include before step a400 and the step 401:

RNC is after notice transmitting apparatus and receiving equipment employing default mode or special default mode, and further notice transmitting apparatus and receiving equipment adopt the part pilot tone;

Accordingly, transmitting apparatus receives the notice of the employing part pilot tone of RNC transmission;

Accordingly, receiving equipment receives the notice of the employing part pilot tone of RNC transmission;

If mode two transmitting apparatus are user terminals, receiving equipment is the base station.That is to say, carry out uplink.

Can further include before the step 401:

Step c400, receiving equipment determine all pilot tones of this data flow according to the code channel resource of the data flow of distributing for transmitting apparatus, and the code channel resource of this data flow by the distribution of control channel notice transmitting apparatus;

The code channel resource of the data flow that steps d 400, transmitting apparatus are distributed according to receiving equipment is determined all pilot tones of this data flow.

If a plurality of data flow are arranged between transmitting apparatus and the receiving equipment.Such as the scheduling of SU-MIMO double fluid, then receiving equipment can be determined all pilot tones of each data flow respectively among the step c400, and notifies transmitting apparatus;

Accordingly, transmitting apparatus can be determined all pilot tones of each data flow in the steps d 400.

If receiving equipment carries out transmitting uplink data to a plurality of user terminals on identical physical resource, divide MU-MIMO scheduling such as sky, then receiving equipment can be determined all pilot tones of each transmitting apparatus respectively among the step c400, and notifies transmitting apparatus;

Accordingly, each transmitting apparatus can be determined all pilot tones of self each data flow in the steps d 400.

Wherein, wherein, can further include between step a400 and the step 401:

Receiving equipment according to predefined selecting sequence and quantity, selects the part pilot tone as the pilot tone in second pilot set from all pilot tones of this data flow of self determining when determining to carry the part pilot tone in data flow.

Arrange from big to small according to the pilot tone sign;

Arrange from small to large according to the pilot tone sign.

The quantity of selecting can be set as required.

In specific implementation process, receiving equipment adopts physical layer signaling notice transmitting apparatus to adopt the part pilot tone to carry out data stream transmission, such as representing that with 1 bit then can set for: the part pilot tone is adopted in " 1 " expression; Whole pilot tones are adopted in " 0 " expression.

Accordingly, transmitting apparatus also can select the part pilot tone as the pilot tone in first pilot set from all pilot tones of self established data stream according to predefined selecting sequence and quantity after receiving the notice that adopts the part pilot tone.

Specifically can inform what order and quantity transmitting apparatus adopts, and also can stipulate in agreement by receiving equipment, select the minimum pilot tone of pilot tone sign such as acquiescence.

Further, receiving equipment can also carry the pilot tone sign of the pilot tone correspondence in second pilot set in the notice that adopts the part pilot tone;

Accordingly, transmitting apparatus is according to the pilot tone sign of carrying in the notice, selects the part pilot tone as the pilot tone in first pilot set from all pilot tones of self established data stream.

Be example with the TDD system, high-rise informing base station and terminal adopt default mode or the specialdefaultmidamble sign indicating number method of salary distribution, when dispatch terminal the base station, can indicate whether adopt new midamble sign indicating number allocative decision (scheme of the distribution pilot tone that the embodiment of the invention proposes) when the business data transmission by physical layer signaling.

Also having a kind of mode is that concrete content is identical with the particular content of RNC advice method in the mode one, does not repeat them here by RNC notice transmitting apparatus and receiving equipment.

Be elaborated for example with TDD HSDPA (High Speed Downlink Packet Access, high speed downlink packet inserts) below.

Embodiment one:

1, high-level signaling notice is used the default mode, and window length is 16, then has 8 midamble sign indicating numbers displacements in the residential quarter, i.e. totally 8 windows;

2, the high-level signaling notice is used new midamble sign indicating number allocative decision, adopts the mode of acquiescence smallest sequence number window;

3, base station scheduling user terminal is with HS-SCCH (Shared Control Channel for HS-DSCH; The shared control channel of high speed descending sharing channel) is informing user terminal distributed time slot code channel resource, such as having distributed descending TS (Time Slot, time slot) 3～TS5 bearer service data and having distributed the code channel of the whole SF=16 in these descending time slots;

4, the base station is according to the default mode, determine the window that distributes for user terminal, the i.e. code channel of 16 SF=16 corresponding 8 windows altogether, the new midamble sign indicating number allocative decision that indicate according to high level the base station again, from these 8 windows, select the window of sequence number minimum for use, the code channel transport service channel HS-PDSCH of 16 SF=16s of base station in TS3～TS5 (High Speed Physical Downlink Shared Channel, the high-speed downstream Physical Shared Channel), these code channels all use the identical window that the base station is determined.

5, user terminal is earlier according to the default mode, determine the base station and be the window of its distribution, the i.e. code channel of 16 SF=16 corresponding 8 windows altogether, user terminal is again according to the new midamble sign indicating number allocative decision of high level indication, uses the window of sequence number minimum in these 8 windows to carry out the channel estimating of HS-PDSCH channel.

Embodiment two:

1, high-level signaling notice is used special default mode, and window length is 16, then has 8 midamble sign indicating numbers displacements in the residential quarter, i.e. totally 8 windows;

2, the high-level signaling notice is used new midamble sign indicating number allocative decision, adopts the mode of acquiescence smallest sequence number window; The base station scheduling user terminal is informing user terminal distributed time slot code channel resource with HS-SCCH, such as having distributed descending TS3～TS5 bearer service data and having distributed the code channel of the whole SF=16 in these descending time slots

3, the definite window that will launch in base station, and the code channel transport service channel HS-PDSCH of 16 SF=16 in TS3～TS5, the identical window that these code channels all use the base station to determine.

Concrete,

If SU-MIMO double fluid scheduling, then descending double-current transfer of data can be carried out to user terminal in the base station, i.e. the code channel of 16 SF=16 corresponding 8 windows altogether, and data flow 1 adopts window numbers 1,3,5,7, and data flow 2 adopts windows numbers 2,4,6,8.The base station is respectively the window that two data flow are selected the sequence number minimum for use according to the new midamble sign indicating number allocative decision of high level indication, and namely data flow 1 adopts window number 1, and data flow 2 adopts windows numbers 2, and the base station utilizes the window of determining to carry out double-current HS-PDSCH channels transmit;

If empty divide MU-MIMO scheduling, then downlink data transmission can be carried out to a plurality of user terminals in the base station on identical physical resource, and the code channel of 16 SF=16 is corresponding 8 windows altogether, and a plurality of empty user terminals that divide use different window in these 8 windows.Do empty the branch as 2 user terminals, then each user terminal uses 4 windows wherein, and namely user terminal 1 adopts window numbers 1,3,5,7, and user terminal 2 adopts windows numbers 2,4,6,8.The window that the new midamble sign indicating number allocative decision that indicate according to high level the base station is each user terminal selecting sequence number minimum, be user terminal 1 and adopt window number 1, for user terminal 2 adopts windows numbers 2, the base station utilizes the window of determining that each user terminal is carried out the HS-PDSCH channels transmit;

4, user terminal is determined the base station and is the window of its distribution according to scheduling and the high-rise indication of base station.

Concrete,

If SU-MIMO double fluid scheduling, then user terminal is determined data flow 1 according to the new midamble sign indicating number allocative decision of high level indication and is adopted window number 1, data flow 2 adopts windows numbers 2, and the window that the user terminal utilization is determined carries out the channel estimating of double-current HS-PDSCH channel;

If the empty MU-MIMO of branch dispatches, then user terminal is that oneself determines window according to the new midamble sign indicating number allocative decision of high level indication respectively, be that user terminal 1 adopts window number 1, user terminal 2 adopts windows numbers 2, and the window that the user terminal utilization is determined carries out the channel estimating of HS-PDSCH channel.

From above-described embodiment as can be seen: embodiment of the invention transmitting apparatus sends the data flow comprise all pilot tones in first pilot set, and first pilot set is the set that the part pilot group becomes in all pilot tones of this data flow correspondence; Receiving terminal carries out channel estimating according to all pilot tones in second pilot set to the data flow that receives; Wherein, the pilot tone of the pilot tone correspondence in the pilot tone of the pilot tone correspondence in first pilot set sign and second pilot set identifies identical.

Because the base station is a plurality of pilot tones of each distribution of flows of terminal, when transmitting data between base station and the terminal, under the certain prerequisite of total transmitting power, transmitting terminal focuses on transmitting power on the part pilot tone, receiving terminal selects the part pilot tone to carry out channel estimating from a plurality of pilot tones of determining, thereby improved the power of each pilot tone, increased antinoise and interference capability, improved precision of channel estimation.

Further, be the part pilot tone because receiving terminal uses when channel estimating, therefore reduced the operand of receiving terminal.

Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.

Claims

1. the method for a channel estimating is characterized in that, this method comprises:

Wherein, the pilot tone of the pilot tone correspondence in the pilot tone of the pilot tone correspondence in first pilot set sign and second pilot set identifies identical;

Described first pilot set is determined according to the following step: described transmitting apparatus is according to predefined selecting sequence and quantity, selects the part pilot tone as the pilot tone in first pilot set from all pilot tones of this data flow of self determining.

2. the method for claim 1 is characterized in that, described transmitting apparatus is the base station, and described receiving terminal is user terminal;

Described transmitting apparatus also comprises before sending the data flow that comprises all pilot tones in first pilot set:

Described transmitting apparatus is determined all pilot tones of this data flow according to the code channel resource that is the data flow of described receiving terminal distribution, and notifies the code channel resource of this data flow of described receiving terminal distribution by control channel;

Described receiving terminal is determined all pilot tones of this data flow according to the code channel resource of the data flow of described transmitting apparatus distribution.

3. method as claimed in claim 2 is characterized in that, described transmitting apparatus also comprises before sending the data flow that comprises all pilot tones in first pilot set:

Described transmitting apparatus adopts physical layer signaling to notify described receiving terminal to adopt the part pilot tone to carry out channel estimating; Described receiving terminal selects the part pilot tone as the pilot tone in second pilot set according to described selecting sequence and quantity from all pilot tones of self established data stream after receiving described notice; Or

Described transmitting apparatus adopts physical layer signaling to notify described receiving terminal to adopt the part pilot tone to carry out channel estimating, and carries the pilot tone sign of pilot tone correspondence in described first pilot set in described notice; Described receiving terminal according to the pilot tone of carrying in described notice sign, selects the part pilot tone as the pilot tone in second pilot set from all pilot tones of self established data stream after receiving described notice.

4. the method for claim 1 is characterized in that, described transmitting apparatus is user terminal, and described receiving terminal is the base station;

Described receiving terminal is determined all pilot tones of this data flow according to the code channel resource that is the data flow of described transmitting apparatus distribution, and notifies the code channel resource of this data flow of described transmitting apparatus distribution by control channel;

Described transmitting apparatus is determined all pilot tones of this data flow according to the code channel resource of the data flow of described receiving terminal distribution.

5. method as claimed in claim 4 is characterized in that, described second pilot set is determined according to the following step:

Described receiving terminal is according to predefined selecting sequence and quantity, selects the part pilot tone as the pilot tone in second pilot set from all pilot tones of this data flow of self determining;

Described receiving terminal adopts physical layer signaling to notify described transmitting terminal to adopt the part pilot tone when data streams; Described transmitting terminal selects the part pilot tone as the pilot tone in first pilot set according to described selecting sequence and quantity from all pilot tones of this data flow of self determining after receiving described notice; Or

Described receiving terminal adopts physical layer signaling to notify described transmitting terminal to adopt the part pilot tone when data streams, and carries the pilot tone sign of pilot tone correspondence in described second pilot set in described notice; Described transmitting terminal according to the pilot tone of carrying in described notice sign, selects the part pilot tone as the pilot tone in first pilot set from all pilot tones of this data flow of self determining after receiving described notice.

6. as claim 1,2 or 4 described methods, it is characterized in that described transmitting apparatus also comprises before sending the data flow that comprises all pilot tones in first pilot set:

Described transmitting apparatus and described receiving terminal receive the notice of the employing part pilot tone of radio network controller (RNC) transmission;

In the notice of described employing part pilot tone, comprise when selecting pilot frequency information, described transmitting apparatus is according to described selection pilot frequency information, from all corresponding pilot tones of self established data stream, select the part pilot tone as the pilot tone in first pilot set, and described receiving terminal selects the part pilot tone as the pilot tone in second pilot set according to described selection pilot frequency information from all corresponding pilot tones of established data stream;

In the notice of described employing part pilot tone, do not comprise when selecting pilot frequency information, described transmitting apparatus is according to predefined selecting sequence and quantity, from all corresponding pilot tones of self established data stream, select the part pilot tone as the pilot tone in first pilot set, and described receiving terminal selects the part pilot tone as the pilot tone in second pilot set according to described selecting sequence and quantity from all corresponding pilot tones of established data stream.

7. the system of a channel estimating is characterized in that, this system comprises:

Transmitting apparatus is used for the data flow that transmission comprises all pilot tones of first pilot set, the set that the part pilot group becomes in all pilot tones that described first pilot set is this data flow correspondence; According to predefined selecting sequence and quantity, from all pilot tones of this data flow of self determining, select the part pilot tone as the pilot tone in first pilot set;

8. system as claimed in claim 7 is characterized in that, described transmitting apparatus is the base station, and described receiving equipment is user terminal;

Described transmitting apparatus also is used for:

According to the code channel resource that is the data flow of described receiving equipment distribution, determine all pilot tones of this data flow, and notify the code channel resource of this data flow of described receiving equipment distribution by control channel;

Described receiving equipment also is used for:

The code channel resource of the data flow of distributing according to described transmitting apparatus is determined all pilot tones of this data flow.

9. system as claimed in claim 8 is characterized in that, described transmitting apparatus also is used for:

Adopt physical layer signaling to notify described receiving equipment to adopt the part pilot tone to carry out channel estimating, or adopt physical layer signaling to notify described receiving equipment to adopt the part pilot tone to carry out channel estimating, and in described notice, carry the pilot tone sign of pilot tone correspondence in described first pilot set;

Described receiving equipment also is used for:

Receive described notice, and do not carrying pilot tone when sign in the described notice, from all pilot tones of self established data stream, selecting the part pilot tone as the pilot tone in second pilot set according to described selecting sequence and quantity;

Receive described notice, and carrying pilot tone when sign in the described notice, according to the pilot tone sign of carrying in the described notice, from all pilot tones of self established data stream, selecting the part pilot tone as the pilot tone in second pilot set.

10. system as claimed in claim 7 is characterized in that, described transmitting apparatus is user terminal, and described receiving equipment is the base station;

Described receiving equipment also is used for:

According to the code channel resource that is the data flow of described transmitting apparatus distribution, determine all pilot tones of this data flow, and notify the code channel resource of this data flow of described transmitting apparatus distribution by control channel;

Described transmitting apparatus also is used for:

The code channel resource of the data flow of distributing according to described receiving equipment is determined all pilot tones of this data flow.

11. system as claimed in claim 10 is characterized in that, described receiving equipment also is used for:

According to predefined selecting sequence and quantity, from all pilot tones of this data flow of self determining, select the part pilot tone as the pilot tone in second pilot set;

Adopt physical layer signaling to notify described transmitting apparatus when data streams, to adopt the part pilot tone, or adopt physical layer signaling to notify described transmitting apparatus when data streams, to adopt the part pilot tone, and in described notice, carry the pilot tone sign of pilot tone correspondence in described second pilot set;

Described transmitting apparatus also is used for:

Receive described notice, and do not carrying pilot tone when sign in the described notice, from all pilot tones of self established data stream, selecting the part pilot tone as the pilot tone in first pilot set according to described selecting sequence and quantity;

Receive described notice, and carrying pilot tone when sign in the described notice, according to the pilot tone sign of carrying in the described notice, from all pilot tones of self established data stream, selecting the part pilot tone as the pilot tone in first pilot set.

12. as claim 7,8 or 10 described systems, it is characterized in that described transmitting apparatus also is used for:

Receive the notice of the employing part pilot tone of radio network controller (RNC) transmission;

In the notice of described employing part pilot tone, comprise when selecting pilot frequency information, according to described selection pilot frequency information, from all corresponding pilot tones of self established data stream, select the part pilot tone as the pilot tone in first pilot set;

In the notice of described employing part pilot tone, do not comprise when selecting pilot frequency information, according to predefined selecting sequence and quantity, from all corresponding pilot tones of self established data stream, select the part pilot tone as the pilot tone in first pilot set;

Described receiving equipment also is used for:

Receive the notice of the employing part pilot tone of RNC transmission;

In the notice of described employing part pilot tone, comprise when selecting pilot frequency information, according to described selection pilot frequency information, from all corresponding pilot tones of established data stream, select the part pilot tone as the pilot tone in second pilot set;

In the notice of described employing part pilot tone, do not comprise when selecting pilot frequency information, according to described selecting sequence and quantity, from all corresponding pilot tones of established data stream, select the part pilot tone as the pilot tone in second pilot set.

13. a transmitting apparatus is characterized in that, this transmitting apparatus comprises:

The first pilot tone determination module is for all pilot tones of determining first pilot set; According to predefined selecting sequence and quantity, from all pilot tones of this data flow of self determining, select the part pilot tone as the pilot tone in first pilot set;

14. transmitting apparatus as claimed in claim 13 is characterized in that, described transmitting apparatus is the base station, and the first pilot tone determination module also is used for:

According to the code channel resource that is the data flow of described receiving equipment distribution, determine all pilot tones of this data flow, and notify the code channel resource of this data flow of described receiving terminal distribution by control channel.

15. transmitting apparatus as claimed in claim 14, it is characterized in that, in the described first pilot tone determination module, the selecting sequence of predefined pilot tone is identical with selecting sequence and the quantity of predefined pilot tone in the described receiving equipment with quantity in the described transmitter;

Described transmitting apparatus also comprises:

The first pilot tone notification module is used for adopting physical layer signaling to notify described receiving equipment to adopt the part pilot tone to carry out channel estimating; Or adopt physical layer signaling to notify described receiving equipment to adopt the part pilot tone to carry out channel estimating, and in described notice, carry the pilot tone sign of pilot tone correspondence in described first pilot set.

16. transmitting apparatus as claimed in claim 13 is characterized in that, described transmitting apparatus is user terminal;

The described first pilot tone determination module also is used for:

17. transmitting apparatus as claimed in claim 16 is characterized in that, the described first pilot tone determination module is used for:

Receiving the notice of carrying out data stream transmission from described receiving equipment employing part pilot tone, and when not carrying the pilot tone sign in the described notice, from all pilot tones of self established data stream, select the part pilot tone as the pilot tone in first pilot set according to predefined selecting sequence and quantity, in the wherein said transmitter in predefined selecting sequence and quantity and the described receiving equipment predefined selecting sequence identical with quantity;

Receiving the notice of carrying out data stream transmission from described receiving equipment employing part pilot tone, and when carrying the pilot tone sign in the described notice, according to the pilot tone of carrying in described notice sign, from all pilot tones of self established data stream, select the part pilot tone as the pilot tone in first pilot set.

18., it is characterized in that the described first pilot tone determination module also is used for as claim 13,14 or 16 described transmitting apparatus:

In the notice of described employing part pilot tone, comprise when selecting pilot frequency information, from all corresponding pilot tones of self established data stream, select the part pilot tone as the pilot tone in first pilot set;

In the notice of described employing part pilot tone, do not comprise when selecting pilot frequency information, according to predefined selecting sequence and quantity, from all corresponding pilot tones of self established data stream, select the part pilot tone as the pilot tone in first pilot set, in the wherein said transmitter in predefined selecting sequence and quantity and the described receiving equipment predefined selecting sequence identical with quantity.

19. a receiving equipment is characterized in that, this receiving equipment comprises:

20. receiving equipment as claimed in claim 19 is characterized in that, described receiving equipment is user terminal;

The described second pilot tone determination module also is used for:

21. receiving equipment as claimed in claim 20 is characterized in that, the described second pilot tone determination module is used for:

Receiving the notice of carrying out channel estimating from described transmitting apparatus employing part pilot tone, and do not carry pilot tone when sign in the described notice, from all pilot tones of self established data stream, select the part pilot tone as the pilot tone in second pilot set according to described selecting sequence and quantity;

Receiving the notice of carrying out channel estimating from described transmitting apparatus employing part pilot tone, and when carrying the pilot tone sign in the described notice, according to the pilot tone of carrying in described notice sign, from all pilot tones of self established data stream, select the part pilot tone as the pilot tone in second pilot set.

22. receiving equipment as claimed in claim 19 is characterized in that, described receiving equipment is the base station;

The second pilot tone determination module also is used for:

According to the code channel resource that is the data flow of described transmitting apparatus distribution, determine all pilot tones of this data flow, and notify the code channel resource of this data flow of described receiving terminal distribution by control channel.

23. receiving equipment as claimed in claim 22 is characterized in that, the described second pilot tone determination module is used for:

According to predefined selecting sequence and quantity, from all pilot tones of this data flow of self determining, select the part pilot tone as the pilot tone in second pilot set, in the wherein said transmitter in predefined selecting sequence and quantity and the described receiving equipment predefined selecting sequence identical with quantity;

Described receiving equipment also comprises:

The second pilot tone notification module is used for adopting physical layer signaling to notify described transmitting apparatus to adopt the part pilot tone to carry out data stream transmission; Or adopt physical layer signaling to notify described transmitting apparatus to adopt the part pilot tone to carry out data stream transmission, and in described notice, carry the pilot tone sign of pilot tone correspondence in described the secondth pilot set.

24., it is characterized in that the described second pilot tone determination module also is used for as claim 19,20 or 22 described receiving equipments:

In the notice of described employing part pilot tone, do not comprise when selecting pilot frequency information, according to predefined selecting sequence and quantity, from all corresponding pilot tones of established data stream, select the part pilot tone as the pilot tone in second pilot set, in the wherein said transmitter in predefined selecting sequence and quantity and the described receiving equipment predefined selecting sequence identical with quantity.