WO2010148531A1

WO2010148531A1 - Method for pre-coding cooperation transmission and system for data transmission

Info

Publication number: WO2010148531A1
Application number: PCT/CN2009/000686
Authority: WO
Inventors: 蒋琦; 沈钢; 郑武; 陈继明; 张凯宾; 金珊
Original assignee: 上海贝尔股份有限公司; 阿尔卡特朗讯
Priority date: 2009-06-22
Filing date: 2009-06-22
Publication date: 2010-12-29
Also published as: CN102405606B; CN102405606A

Abstract

The present invention provides a method for pre-coding cooperation transmission in the data transmission system with Relay Node (RN). At eNB, the method includes the following steps: receiving the channel coefficient estimation result of the link from the eNB to a User Equipment (UE) and the channel coefficient estimation result of the link from the Relay Node (RN) to the UE, wherein the results are reported by the UE; according to the received channel coefficient estimation result of the link from the eNB to the UE and the channel coefficient estimation result of the link from the RN to the UE, computing the phase difference between the channel coefficient of the link from the eNB to the UE and the channel coefficient of the link from the RN to the UE; pre-coding the original transmission data by using the computed phase difference, and thus rotating the phase of the channel coefficient of the link from the eNB to the UE and enabling the rotated phase of the channel coefficient of the link from the eNB to the UE to be almost equal to the phase of the channel coefficient of the link from the RN to the UE; and transmitting the pre-coded transmission data to the UE.

Description

Same method and digital transmission system

This is related to the communication field, which involves the God's pre-same method in the medium-sized transmission system and the same digital transmission system to enhance the RF F-well effect and carbon BE performance. Background

Medium is the medium of the L E first system. At 3 PP third generation partners

56b s in 2009 3 specified support force E medium wood. In the following

* does not have a small size and therefore does not have any new small

* Medium to version 8 e 8 user terminal UE and

* At least version 8 UE does not know the presence of .

Since the existence of version E is known to provide some performance gains under the same E and B. RF F combination is

The same method does not match the version 8 UE causing any. However, as shown in Fig. 1, since the phase of the channel coefficients of E and E at the eNB UE are different, in some cases, the signal performance gain from different cities cannot be directly F-integrated. For example, the phase of the channel coefficients of the eNB to the UE and the UE is relatively large. The F-well signal from the eNB and the letter from the N will have poorer well-mixing results.

Until now, there is no mature method to solve without using direct F-well. Content

This has been proposed to overcome the existing defects of wood. Therefore, the purpose of this paper is to propose God's pre-synthesis method in the N-transmission system and the same digital transmission system to enhance the RF F-well effect and rate performance.

The purpose of this paper is to propose the same method in the digital transmission system with N. In the eNB, her method includes receiving the e B UE of E. The channel coefficient and the channel coefficient result of j E are calculated by using the received channel coefficient result of the eNB to the UE and the channel phase result of the NE, the channel coefficient of the eNB to the UE, and the channel coefficient of the N UE. The phase of the original and the phase of the channel coefficients of the eNB is such that the specific phase of the channel coefficients of the eNB to E is approximately equal to the phase of the channel coefficients of the N UE and to the UE.

At the UE, the method includes receiving the pre- and N-origin of the eNB and the pre- and N-received original radio-frequency wells received by the eNB.

The calculated phase original includes the previous interpolation, the previous resource, the respective interpolation phase matrix of the respective phases, and the multiplication of the original matrix, wherein the resource component is more basic and more basic. Each medium includes more carriers.

In addition, a pre-determined method of a digital transmission system with a medium N is proposed. The method includes receiving a channel coefficient of the UE to the UE, and using the channel coefficient of the received eN UE.

The phase of the channel coefficient of the eNB UE is calculated by the phase of the channel coefficient of the eNB E, and the phase of the channel coefficient of the eN E is specific to the predetermined phase and to the N and the N UE of the receiving method of the UE The channel coefficient result is the phase original of the channel coefficient of the NE calculated using the phase of the channel coefficient of the received channel coefficient result E of the N UE.

The phase of the channel coefficient of the N to UE is specific to the predetermined phase and to the UE.

The UE method includes receiving the pre- and N-pre-e of e B and the pre- and N-received pre-radio wells received by the eNB.

Calculated phase original of the channel coefficient of e BE Including on the front of the use, using the calculated front, front, and respective phases of the money to insert the value matrix and multiplying the original matrix, wherein the basic resources are more basic, including the multi-message carrier.

The calculated phase of the channel coefficient of the NE is not originally included in the upper front, the front, and the respective phases of the calculated upper and lower phases, and the original matrix phase is divided into a plurality of basic hulls. Each medium includes a multi-subcarrier.

In addition, the present invention proposes that the same digital transmission system including eN and N e B includes the channel coefficient result of the receiving device at the e B receiving the E to the UE and the channel coefficient result of the NE to utilize the channel of the received eNB to the UE. The phase result of the coefficient result and the channel coefficient of the N UE and the channel coefficient of the NE and the channel coefficient of the NE, the phase original calculated at the root

And the phase of the channel coefficient of the eNB UE is such that the specific phase of the channel coefficient of the eNB to the UE is approximately equal to the phase of the channel coefficient of the N UE and the first device is in the UE and the N includes the second device. Original to the UE.

In addition, the present invention proposes a live data transmission system including e B and the eNB includes a first receiving device, and the channel coefficient of the eNB receiving the E to the UE results in that the first device utilizes the channel of the received eN E The result of the coefficient result eNB UE's channel coefficient phase first device calculates the phase of the channel coefficient of the e BE

And the phase of the channel coefficient of the e B to the UE is specific to the predetermined phase and the device is used to the UE, and the channel coefficient result of the second receiving device receiving the E of the E is used by the second device to utilize the received N. UE channel coefficient result E The phase of the channel coefficient second means to phase the phase of the channel coefficients of N to E calculated by the root and to phase the phase of the channel coefficient of N to the UE to a predetermined phase and the second device to the UE

of .

Bright

Refer to the following purpose of the combination, and the special purpose.

囤1 is the schematic of the result of the well-integration of the direct F-well well in the case of different phases. 2 is the flow of the first pre-method of the present.

3 is the original indication of this

4 is the flow of the second pre-method of this

5 is the first of the same number of living systems

6 is the second of the same live system

7 a is a schematic representation of the BE performance comparison of the X system original F well and the present pre-F well for the UE speed of 3k ph 3k h) and 7 b is the X speed of the UE for 3 k ph 3 kh) An indication of the E-performance comparison of the system, the original F-well and the pre-F well. Hugh way

The description will be referred to below.

2 is the flow of the first pre-method of this.

In the present description, it is first assumed that N has been eNB "and the required original of a particular UE.

As shown in FIG. 2, the eNB receives the channel coefficient result of the e BE of E and the channel coefficient result of the NE in step 201. At step 203 eN utilizes the channel coefficients of the received eNB U and the channel coefficients of the NE The same channel phase of the eNB to the UE and the channel coefficient of the N to the UE. In step 205, the eNB calculates the phase of the original channel and the phase of the channel system of e BE so that the specific phase of the channel coefficient of the e UE is approximately equal to the phase of the channel coefficient of NU. At step 207, e B to the UE.

This, N to E original.

The UE then receives the pre-sum original of the eNB, and the pre- and N-received original radio-frequency wells received by the UE eNB. The preamble for e B and is periodically controlled by e B . Before this, it is assumed that N" "to the required original of a particular UE. The performance of the same residence periodically updates the original multiplied pre-matrix on the eNB. Assume that the period is the same as K 2 TT. It means that the B update information is due to the L E system 0.5*TT is the same as the TT 0.5 s occupied by B. The original diagram of the 3 books will be combined below.

The first of the present will calculate the channel coefficient of the eNB UE and the phase of the channel coefficient of the N UE as the original of the eNB.

3 shows the component of XN

b ock 1 N where she is and N she is.

The L basic B and the B above. Each of the multiple Bs includes more than . Assume that each B contains 12 between and then use the original phase of the 12L 2L matrix matrix without b ock . , W is normalized and can be W d . ..exp( )..exp( - 1 A short break method.

The channel coefficient information will be updated every 2 TT equal to the pre-same of this line. Now it will be every b ock. It is assumed that the UE has the channel coefficient of e B to the UE and the channel coefficient result of the NE to the eNB. And resources UE will be introduced

b ock No information. Assumed

The shared meaning means that the channel coefficient result of the previous resource and the channel coefficient can be used for the pre-matrix. The y eNB UE's savvy channel coefficient is the same as the N UE's savvy channel coefficient and represents the same phase of the eNB UE's channel coefficient and the N UE's channel coefficient A / then in each meson Each on the carrier can

Represents the child in each medium. Easily by formula 2

"

Is to use the calculated pre-resources, before

The money for each phase of the 吋 + square is not interpolated. Since the version 8 UE will not know the existence of this version of the pre-release version 8 UE still uses the unspecified reference F-well solution.

The original on the local eN makes the special phase of the channel coefficient of the e BE approximately equal to the phase of the channel coefficient of the UE and greatly increases the F-well effect. The force phase is the result of the channel coefficient and not the value of the channel coefficient. Therefore, the characteristic phase of the channel coefficient of the eNB E is "approximate to" and is not equal to the phase of the channel coefficient of the NE. 4 is the flow of the second pre-method of this. 4 shows in step 401 that the eNB receives the channel coefficients of the UE's eNB to E. At step 403 e, the phase of the channel coefficient of the received channel coefficient of the eN UE is transmitted to the UE. In step 405, the eNB calculates the phase of the channel coefficient of the eNB to E is not original but the eNB The phase of the UE's beat coefficient is specific to the predetermined phase. At step 407, the eNB goes to E.

of .

Further, in step 401 N, the channel coefficient result of the N IUE of E is received. At step 403 N, the received channel coefficient of the N to UE is not N [the phase of the channel coefficient of E. The phase of the channel coefficients of N to E calculated at step 405 r is original and the phase of the channel coefficients of the N UE is set to a predetermined phase. At step 407 N to E

of .

The UE then receives the pre-and pre-received e B and the pre- and N-received pre-radio wells received by the UE eNB. As described above, the phase of the channel coefficient of the eNB to the UE calculated by the second eNB is original and the phase of the channel coefficient of N to E calculated by N is original. The generation method of the pre-matrix W used in e B The first generation of the matrix W is similar to that in the formula 2. The generated pre-matrix specializes the phase of the channel coefficients of the eNB UE to the phase.

The generation method of the pre-matrix used in N is generated in the same way as in Equation 2, and the generated pre-matrix will phase the phase of the channel coefficients of l E to the phase. Therefore, the channel coefficients of e B to E The particular phase and the specific phase of the channel coefficients to the UE are approximately equal.

The above has been made to perform the phase-specific phase of the phase of the channel coefficient of the eNB to E and the channel coefficient of E at e B and N, respectively. However, the present invention is not limited thereto, but the phase of the channel coefficient of the eNB UE and the phase of the channel coefficient of the N to the UE may be specific to any predetermined phase other than the phase, or may be the channel coefficient of the e B lUE. Special The specific phases of the phase and the channel coefficients of N to E are approximately equal. 5 is the first of the number of live transmission systems.

The data transmission system shown in 5 includes eNB and N. The eNB includes a channel coefficient result of the receiving device 501 receiving the eNB of the UE to the UE and a channel coefficient result device of the N to the UE. The channel coefficient result of using the received eNB to E and the channel coefficient eNB E of the N UE. The phase of the channel coefficient calculated by the phase device 505 of the channel coefficient of the NE and the channel coefficient of the NE is more than the phase of the channel system of the eN UE, so that the special phase of the channel coefficient of the eNB UE is approximately equal to N to E. The phase of the channel coefficients and the first device 507 are to the UE. N includes the second device 507 in the original to E. 6 is the second of the same number of systems.

The data transmission system shown in Figure 6 includes eNB and N. e B includes the channel coefficient of the first receiving device 601 at the eNB E of the receiving UE

The device 603 uses the received channel coefficient of the channel coefficient of the eNB E to determine the channel coefficient of the channel coefficient of the eN to the UE calculated by the phase first device 605 of the channel coefficient of the eNB UE. The phase is specific to the predetermined phase and the first device 607 is directed to the UE. The second device 603 includes a channel coefficient result of the N UE of the UE that is received by the second receiving device 601, and is calculated by the second device 605 of the channel coefficient of the N UE using the channel coefficient result of the received N UE. The phase of the channel coefficients of the NE is original and the phase of the channel coefficients of the NE is dedicated to a predetermined phase and the second device 607 is directed to the UE. 7 a and 7 b provide the respective X system wells, existing F wells, and the present pre-F wells. The power under different conditions is equalized and 3 SE with fixed parameters is in the middle. , compare each frequency with the special 2 B TT T or 20 B 1 T. 1 has a parameter.

1 parameters and

Parameter

Carrier frequency 2 Hz

1 Hz FFT size 024)

P K

Reply model 3 PP

Configuration x, existing F-well, F-well rate 3k ph 30kmh

Good letter

Update cycle 1 TT 10 TT

1 (General P 12-subcarriers) Hugh 7a and 7b have BE performance for the X system, the existing F-well and the F-well. Since the phase of the channel of eNB E and the channel of N E can be the same, the existing F-well scheme cannot achieve performance gain. The F-well solution of this pre-synthesis method can significantly enhance BE performance. In addition, the performance with 1 T hur is close to T, especially at low rates. It means that the update cycle will get the performance gain of this method.

The combination of the above and the above can be used to introduce the version 8 UE to improve the F-well performance.

It is necessary to be able to use the same scheme in e B or the group. In the same residence of the eNB, it can multiply the matrix e B by the same multi-Tx xo P . The same as the first of N The number is not particularly high performance gain. The introduction of the N-pass will have a greater enhancement of the different phases of all the channel coefficients to the same phase.

The same scheme provides system performance in full compatibility with Release 8 UEs. In addition, it is easy to fold into the o P and multi-system.

In the F-well, there is no performance gain, because the eNB UE and the UE props have the same performance gain. This pre-same solution solves the large performance gain in the full compatibility of the version 8 UE. However, this is not limited to, but can be used in other middle.

The above has been combined with this book, but the wood people in this field will understand that the Bank can modify, replace and modify it in the same spirit. Therefore, this is not limited by the above.

And its limitations.

Claims

Requirements 1. God's pre-determined method in a digital transmission system with a medium N

Receive the channel coefficient result of e B E of user terminal E and the channel coefficient result of N UE

Using the channel coefficient result of the received eNB UE and the channel coefficient of N, the same phase of the channel coefficient of the eNB to the UE and the channel coefficient of N E

The calculated phase is original and the phase of the channel coefficients of e E is reversed so that the specific phase of the channel coefficients of the eNB UE is approximately equal to the phase of the channel coefficients of the N UE and

To the UE.

2. The method of claim 1 characterized in that, in the UE, the method includes receiving the pre- and N originals of the eNB and

Pre- and N-received originals received by the eNB

RF integration well.

3. The method of requirement 1 is characterized by the phase calculated by the root.

Using the calculated upper and previous resources, the first phase of the money, the interpolation matrix, and the matrix

Multiply the original matrix

Among them, the resources are more divided, and the basic ones include multiple sub-carriers.

4. God's pre-determined method in the digital transmission system.

The channel coefficient result of receiving the eN UE of the user E utilizes the channel coefficient result e B of the received eNB to E to Phase of the channel coefficient of E

The phase of the calculated channel coefficient of the eNB UE

And the phase of the channel coefficient of the eNB UE is specific to a predetermined phase and

To E and

In the N method includes

Channel coefficient of the received N E of the UE

Using the channel coefficient of the received N UE, the phase of the channel coefficient of the N UE

The phase of the calculated channel coefficient of the N UE

And the phase of the channel coefficient of the N UE is set to a predetermined phase and

To the UE.

5. The method of claim 4 is characterized in that the UE method includes receiving pre- and N pre-of e B and

The pre-received and N-received pre-radio wells received by the eNB.

6. The method of requirement 4 is characterized in that the phase of the channel coefficient of the calculated e B U is originally included

Using the calculated anterior, anterior, and 吋 respective interpolated values of the matrices on the front and the matrices

Multiplying the original matrix

Wherein the component is more basic and more basic, each of which includes a multi-subcarrier.

7. The method of claim 4, characterized in that the phase of the calculated channel coefficient of the UE is originally included

The 前 of the previous one, the front, and the Matrix and

Multiply the original matrix

Among them, the basic component of the basic multi-basic kanban includes multiple sub-carriers.

8. The digital transmission system in the same residence

The base station eNB e B includes

The receiving device is configured to receive the channel coefficient of the eNB UE of the user terminal E and the channel coefficient of the N to the UE.

The device uses the channel coefficients of the received eNB UE and the channel coefficients of the UE, the channel coefficients of the eNB UE, and the same phase of the channel coefficients of the UE.

The phase calculated by the root is originally retrograde and the phase of the channel coefficient of the eNB UE is such that the specific phase of the channel coefficient of the eNB IUE is approximately equal to the phase of the channel coefficient of E and

The first device is for the UE

N includes

The second device is original to the UE.

9, in the same number of transmission systems including

The eNB eNB includes

a channel coefficient of the eNB UE receiving the user UE by the first receiving device

The first device is configured to utilize the channel coefficients of the received eNB E, the phase of the channel coefficients of the eNB to E

The first device calculates the phase of the channel coefficient of the e B to the UE at the root, and sets the phase of the channel coefficient of the eNB E to a predetermined phase and

The first device is included in the UE, and the N N is included

Channel coefficient of the second receiving device receiving E to E Result

The second means uses the channel coefficient of the received N E result N to the phase of the channel coefficient of the UE

Second, the phase of the channel coefficient of the N E calculated at the root is original and the phase of the channel coefficient of N E is set to a predetermined phase and

The second is to the UE.