CN102036291A - Method and device for processing channel quality report of backhaul link - Google Patents

Abstract

The invention provides a method for processing the channel quality report of a backhaul link, comprising the following steps: coding the generated channel quality report to obtain the coded information, wherein a relay station determines the amount of the coded information according to the format of a physical uplink control channel (PUCCH) for bearing the channel quality report and the modulation mode of the information of the channel quality report or the configuration indication of a base station; scrambling the coded information to obtain scrambled sequence, then modulating the scrambled sequence to obtain modulated complex value symbol sequence and then carrying out frequency domain extension to obtain the complex value symbol sequence after frequency domain extension; and mapping the complex value symbol sequence after frequency domain extension to the PUCCH physical resource configured by the system. The invention also provides a device for processing the channel quality report of the backhaul link. The method and the device effectively realize that the relay station bears the channel quality report of the backhaul link on the PUCCH and transmits the channel quality report to the base station.

Description

Method and device for processing channel quality report of backhaul link

Technical Field

The present invention belongs to the field of mobile communications, and in particular, to a method and an apparatus for processing a channel quality report for a Backhaul Link.

Background

Relay (Relay) technology, which is an emerging technology, attracts more and more extensive attention and is considered as a key technology of B3G/4G. This presents new challenges to wireless communication technologies as future wireless communication or cellular systems require perfect network coverage to support higher rate transmissions. At the same time, the cost of system construction and maintenance is more problematic. As transmission rates and communication distances increase, battery power consumption becomes more problematic, and future wireless communications will use higher frequencies, resulting in more severe path loss attenuation. Through the relay technology, the traditional single-hop link can be divided into a plurality of multi-hop links, and the distance is shortened, so that the path loss is greatly reduced, the transmission quality is improved, the communication range is expanded, and the service with higher speed and higher quality is provided for users.

In a network with a Relay Node (RN), as shown in fig. 1, a Link between an evolved base station (E-UTRAN NodeB, eNB) and a Macro User Equipment (M-UE) in the network is called a Direct Link (Direct Link), a Link between the base station and the Relay is called a backhaul Link, and a Link between the Relay and a Relay User Equipment (R-UE) is called an Access Link (Access Link).

In an LTE system, in order to achieve the purposes of flexible and effective scheduling and parameter configuration of an eNB for a UE, the UE reports a Channel Quality report related to a direct link according to a configuration Indication of the eNB, where the Channel Quality report includes information such as a Channel Quality Indicator (CQI), a Precoding Matrix Indicator (PMI), and a Rank Indicator (RI), and the eNB performs scheduling configuration on the UE according to the reported information.

On a direct link of an LTE system, a Channel quality report is carried on a Physical Uplink Control Channel (PUCCH), and is divided into PUCCH formats 2/2a/2b, and the Channel structures thereof are shown in fig. 2 and fig. 3.

When a system frame structure adopts a Normal Cyclic Prefix (Normal CP), each subframe contains 14 SC-FDMA (Single Carrier-Frequency Division multiple access) symbols, as shown in fig. 2, the subframe is divided into 2 slots, each slot includes 7 SC-FDMA symbols, Frequency Hopping (Hopping) is performed among the slots, where #0, #2, #3, #4, #6, #7, #9, #10, #11, #13 symbols carry channel quality reports, and the remaining #1, #5, #8, #12 symbols map pilot (RS, Reference Signal) signals.

When the system frame structure adopts Extended Cyclic Prefix (Extended CP), each subframe contains 12 SC-FDMA symbols, as shown in fig. 3, the subframe is divided into 2 slots, each slot includes 6 SC-FDMA symbols, frequency Hopping is performed among the slots, wherein channel quality report information is carried on #0, #1, #2, #4, #5, #6, #7, #8, #10, #11 symbols, and RS signals are mapped on the remaining #3, #9 symbols.

On Direct Link, the UE performs coding, scrambling, modulation, frequency domain spreading, and other processing on a channel quality report to be reported to the eNB according to system configuration, maps the channel quality report to the allocated PUCCH physical resources, and maps an RS at a corresponding symbol position and sends the mapped channel quality report to the eNB. Meanwhile, the eNB may allocate the same PUCCH physical resource to multiple UEs, since the frequency domain spreading index CS _ index used by each UE has orthogonality, channel quality reports of multiple UEs may be multiplexed on the same PUCCH physical resource, and relevant parameters and resource allocation indicate the UEs by the eNB configuration.

The M-UE processes the generated channel quality report according to the configuration indication of the eNB and the corresponding calculation mode, and the steps are as follows:

step 10, obtaining parameter configuration indication

The M-UE obtains the configuration indication of the eNB on the PUCCH related parameters:

PUCCH resource index number for carrying channel quality report, indicated by higher layer configuration;

a bandwidth for PUCCH format 2/2a/2b, in units of RBs (resource blocks), indicated by higher layer configuration;

the number of CS _ indexes used for PUCCH format 1/1a/1b in mixed RB (hybrid resource Block) allocated for carrying PUCCH format 1/1a/1b and PUCCH format 2/2a/2b simultaneously, i.e., the RB of channel quality report information.

Step 20, obtaining resource allocation

According to the configuration parameters, the M-UE may obtain resource allocation of the PUCCH format 2/2a/2b according to a corresponding calculation method, as follows:

2a) calculating n_PRB

First according to

Calculating the index number m of the RB pair corresponding to the configured PUCCH channel:

further, calculating RB resource number n of the allocated R-PUCCH actual physical resource configuration according to m_PRB：

Wherein n is_sIs a slot number within a radio frame,

for the number of sub-carriers contained per RB,the uplink bandwidth configured for the system is in units of RBs.

2b) Calculate n' (n)_s)

According to

Andcalculate n' (n)_s)：

When n is_sWhen mod 2 is 0, i.e. the first slot of each subframe

<math><mrow><msup><mi>n</mi><mo>&prime;</mo></msup><mrow><mo>(</mo><msub><mi>n</mi><mi>s</mi></msub><mo>)</mo></mrow><mo>=</mo><mfenced open='{' close=''><mtable><mtr><mtd><msubsup><mi>n</mi><mi>PUCCH</mi><mrow><mo>(</mo><mn>2</mn><mo>)</mo></mrow></msubsup><mi>mod</mi><msubsup><mi>N</mi><mi>sc</mi><mi>RB</mi></msubsup></mtd><mtd><mi>if</mi><msubsup><mi>n</mi><mi>PUCCH</mi><mrow><mo>(</mo><mn>2</mn><mo>)</mo></mrow></msubsup><mo>&lt;</mo><msubsup><mi>N</mi><mi>sc</mi><mi>RB</mi></msubsup><msubsup><mi>N</mi><mi>RB</mi><mrow><mo>(</mo><mn>2</mn><mo>)</mo></mrow></msubsup></mtd></mtr><mtr><mtd><mrow><mo>(</mo><msubsup><mi>n</mi><mi>PUCCH</mi><mrow><mo>(</mo><mn>2</mn><mo>)</mo></mrow></msubsup><mo>+</mo><msubsup><mi>N</mi><mi>cs</mi><mrow><mo>(</mo><mn>1</mn><mo>)</mo></mrow></msubsup><mo>+</mo><mn>1</mn><mo>)</mo></mrow><mi>mod</mi><msubsup><mi>N</mi><mi>sc</mi><mi>RB</mi></msubsup></mtd><mtd><mi>otherwise</mi></mtd></mtr></mtable></mfenced></mrow></math>

When n is_sWhen mod 2 is 1, i.e. the second slot of each subframe

<math><mrow><msup><mi>n</mi><mo>&prime;</mo></msup><mrow><mo>(</mo><msub><mi>n</mi><mi>s</mi></msub><mo>)</mo></mrow><mo>=</mo><mfenced open='{' close=''><mtable><mtr><mtd><mo>[</mo><msubsup><mi>N</mi><mi>sc</mi><mi>RB</mi></msubsup><mrow><mo>(</mo><msup><mi>n</mi><mo>&prime;</mo></msup><mrow><mo>(</mo><msub><mi>n</mi><mi>s</mi></msub><mo>-</mo><mn>1</mn><mo>)</mo></mrow><mo>+</mo><mn>1</mn><mo>)</mo></mrow><mo>]</mo><mi>mod</mi><mrow><mo>(</mo><msubsup><mi>N</mi><mi>sc</mi><mi>RB</mi></msubsup><mo>+</mo><mn>1</mn><mo>)</mo></mrow><mo>-</mo><mn>1</mn></mtd><mtd><mi>if</mi><msubsup><mi>n</mi><mi>PUCCH</mi><mrow><mo>(</mo><mn>2</mn><mo>)</mo></mrow></msubsup><mo>&lt;</mo><msubsup><mi>N</mi><mi>sc</mi><mi>RB</mi></msubsup><msubsup><mi>N</mi><mi>RB</mi><mrow><mo>(</mo><mn>2</mn><mo>)</mo></mrow></msubsup></mtd></mtr><mtr><mtd><mrow><mo>(</mo><msubsup><mi>N</mi><mi>sc</mi><mi>RB</mi></msubsup><mo>-</mo><mn>2</mn><mo>-</mo><msubsup><mi>n</mi><mi>PUCCH</mi><mrow><mo>(</mo><mn>2</mn><mo>)</mo></mrow></msubsup><mo>)</mo></mrow><mi>mod</mi><msubsup><mi>N</mi><mi>sc</mi><mi>RB</mi></msubsup></mtd><mtd><mi>otherwise</mi></mtd></mtr></mtable></mfenced></mrow></math>

2c) Calculating n_cs(n_s，l)

According to n' (n)_s) Can further obtain n_cs(n_s，l)：

<math><mrow><msub><mi>n</mi><mi>cs</mi></msub><mrow><mo>(</mo><msub><mi>n</mi><mi>s</mi></msub><mo>,</mo><mi>l</mi><mo>)</mo></mrow><mo>=</mo><mrow><mo>(</mo><msubsup><mi>n</mi><mi>cs</mi><mi>cell</mi></msubsup><mrow><mo>(</mo><msub><mi>n</mi><mi>s</mi></msub><mo>,</mo><mi>l</mi><mo>)</mo></mrow><mo>+</mo><msup><mi>n</mi><mo>&prime;</mo></msup><mrow><mo>(</mo><msub><mi>n</mi><mi>s</mi></msub><mo>)</mo></mrow><mo>)</mo></mrow><mi>mod</mi><msubsup><mi>N</mi><mi>SC</mi><mi>RB</mi></msubsup></mrow></math>

Wherein,

<math><mrow><msubsup><mi>n</mi><mi>cs</mi><mi>cell</mi></msubsup><mrow><mo>(</mo><msub><mi>n</mi><mi>s</mi></msub><mo>,</mo><mi>l</mi><mo>)</mo></mrow><mo>=</mo><msubsup><mi>&Sigma;</mi><mrow><mi>i</mi><mo>=</mo><mn>0</mn></mrow><mn>7</mn></msubsup><mi>c</mi><mrow><mo>(</mo><mn>8</mn><msubsup><mi>N</mi><mi>symb</mi><mi>UL</mi></msubsup><mo>&CenterDot;</mo><msub><mi>n</mi><mi>s</mi></msub><mo>+</mo><mn>8</mn><mi>l</mi><mo>+</mo><mi>i</mi><mo>)</mo></mrow><mo>&CenterDot;</mo><msup><mn>2</mn><mi>i</mi></msup></mrow></math>

l is the SC-FDMA symbol number in each slot,

is the number of SC-FDMA symbols contained in each slot.

2d) Calculating alpha (n)_s，l)

According to n_cs(n_sL) the cyclic shift α (n) can be further obtained_s，l)：

<math><mrow><mi>&alpha;</mi><mrow><mo>(</mo><msub><mi>n</mi><mi>s</mi></msub><mo>,</mo><mi>l</mi><mo>)</mo></mrow><mo>=</mo><mn>2</mn><mi>&pi;</mi><mo>&CenterDot;</mo><msub><mi>n</mi><mi>cs</mi></msub><mrow><mo>(</mo><msub><mi>n</mi><mi>s</mi></msub><mo>,</mo><mi>l</mi><mo>)</mo></mrow><mo>/</mo><msubsup><mi>N</mi><mi>sc</mi><mi>RB</mi></msubsup></mrow></math>

Step 30, mapping of processing of channel quality reports

The M-UE processes the generated channel quality report according to the resource allocation and finally maps the channel quality report to the allocated PUCCH resources, and the steps are as follows:

3a) encoding

The M-UE encodes the generated channel quality report, and uses a linear coding scheme based on the basic sequence encoder (20, a) shown in table 1. The input end of the encoder inputs an A bit sequence a₀，a₁，a₂，a₃，...，a_A-1Then encode and output B bit sequence B₀，b₁，b₂，b₃，...，b_B-1Comprises the following steps:

<math><mfenced open='' close=''><mtable><mtr><mtd><msub><mi>b</mi><mi>i</mi></msub><mo>=</mo><munderover><mi>&Sigma;</mi><mrow><mi>n</mi><mo>=</mo><mn>0</mn></mrow><mrow><mi>A</mi><mo>-</mo><mn>1</mn></mrow></munderover><mrow><mo>(</mo><msub><mi>a</mi><mi>n</mi></msub><mo>&CenterDot;</mo><msub><mi>M</mi><mrow><mi>i</mi><mo>,</mo><mi>n</mi></mrow></msub><mo>)</mo></mrow><mi>mod</mi><mn>2</mn></mtd><mtd><mi>i</mi><mo>=</mo><mn>0,1,2,3</mn><mo>,</mo><mo>.</mo><mo>.</mo><mo>.</mo><mo>,</mo><mi>B</mi><mo>-</mo><mn>1</mn><mo>.</mo></mtd></mtr></mtable></mfenced></math>

wherein, B is 20.

TABLE 1(20, A) encoded base sequence Listing

i	Mi，0	Mi，1	Mi，2	Mi，3	Mi，4	Mi，5	Mi，6	Mi，7	Mi，8	Mi，9	Mi，10	Mi，11	Mi，12
														0	1	1	0	0	0	0	0	0	0	0	1	1	0
1	1	1	1	0	0	0	0	0	0	1	1	1	0
														2	1	0	0	1	0	0	1	0	1	1	1	1	1
3	1	0	1	1	0	0	0	0	1	0	1	1	1
														4	1	1	1	1	0	0	0	1	0	0	1	1	1
5	1	1	0	0	1	0	1	1	1	0	1	1	1
														6	1	0	1	0	1	0	1	0	1	1	1	1	1
7	1	0	0	1	1	0	0	1	1	0	1	1	1
														8	1	1	0	1	1	0	0	1	0	1	1	1	1
9	1	0	1	1	1	0	1	0	0	1	1	1	1
														10	1	0	1	0	0	1	1	1	0	1	1	1	1
11	1	1	1	0	0	1	1	0	1	0	1	1	1
														12	1	0	0	1	0	1	0	1	1	1	1	1	1

13	1	1	0	1	0	1	0	1	0	1	1	1	1
														14	1	0	0	0	1	1	0	1	0	0	1	0	1
15	1	1	0	0	1	1	1	1	0	1	1	0	1
														16	1	1	1	0	1	1	1	0	0	1	0	1	1
17	1	0	0	1	1	1	0	0	1	0	0	1	1
														18	1	1	0	1	1	1	1	1	0	0	0	0	0
19	1	0	0	0	0	1	1	0	0	0	0	0	0

3b) Scrambling

The output of the encoded channel quality report is 20-bit encoded information b (0) after encoding, and then b (19), the M-UE further scrambles the information to obtain a scrambled sequence:

$\tilde{b}\left(i\right)=(b\left(i\right)+c\left(i\right))\mathrm{<figure-callout\; id="2"\; label="mod"\; filenames="H2009101778616E0000022.png"\; state="\{\{state\}\}">mod</figure-callout>}2$

the scrambled sequence is represented as

The generation method of a Gold pseudo-random sequence c (i) with the length of 31 adopted by scrambling is as follows:

c(n)＝(x₁(n+N_C)+x₂(n+N_C))mod 2

x₁(n+31)＝(x₁(n+3)+x₁(n))mod 2

x₂(n+31)＝(x₂(n+3)+x₂(n+2)+x₂(n+1)+x₂(n))mod 2

wherein N is_C1600, c (i) is generated from two sets of length 31 m-sequences, where:

the initial value of the first m-sequence is: x is the number of₁(0)＝1，x₁(n)＝0，n＝1，2，...，30；

The initial values for the second m-sequence are expressed as: <math><mrow><msub><mi>c</mi><mi>init</mi></msub><mo>=</mo><msubsup><mi>&Sigma;</mi><mrow><mi>i</mi><mo>=</mo><mn>0</mn></mrow><mn>30</mn></msubsup><msub><mi>x</mi><mn>2</mn></msub><mrow><mo>(</mo><mi>i</mi><mo>)</mo></mrow><mo>&CenterDot;</mo><msup><mn>2</mn><mi>i</mi></msup></mrow></math>

here, ,

n_RNTInamely the C-RNTI (Cell Radio Network Temporary Identifier) of the UE,

is the cell identity.

3c) Modulation

M-UE will scramble the post sequence

QPSK modulated into 10 modulated symbols, denoted d (0).

3d) Frequency domain spreading

The M-UE performs frequency domain spreading on information d (0) carried by PUCCH firmat 2/2a/2 b.

<math><mrow><mi>z</mi><mrow><mo>(</mo><msubsup><mi>N</mi><mi>seq</mi><mi>PUCCH</mi></msubsup><mo>&CenterDot;</mo><mi>n</mi><mo>+</mo><mi>i</mi><mo>)</mo></mrow><mo>=</mo><mi>d</mi><mrow><mo>(</mo><mi>n</mi><mo>)</mo></mrow><mo>&CenterDot;</mo><msubsup><mi>r</mi><mrow><mi>u</mi><mo>,</mo><mi>v</mi></mrow><mrow><mo>(</mo><mi>&alpha;</mi><mo>)</mo></mrow></msubsup><mrow><mo>(</mo><mi>i</mi><mo>)</mo></mrow><mo>,</mo><mi>n</mi><mo>=</mo><mn>0,1</mn><mo>,</mo><mo>.</mo><mo>.</mo><mo>.</mo><mo>,</mo><mn>9</mn><mo>,</mo><mi>i</mi><mo>=</mo><mn>0,1</mn><mo>,</mo><mo>.</mo><mo>.</mo><mo>.</mo><mo>,</mo><msubsup><mi>N</mi><mi>sc</mi><mi>RB</mi></msubsup><mtext>-1</mtext></mrow></math>

Wherein, $N_{\mathrm{seq}}^{\mathrm{PUCCH}}=12;$

<math><mrow><msubsup><mi>r</mi><mrow><mi>u</mi><mo>,</mo><mi>v</mi></mrow><mrow><mo>(</mo><mi>&alpha;</mi><mo>)</mo></mrow></msubsup><mrow><mo>(</mo><mi>n</mi><mo>)</mo></mrow><mo>=</mo><msup><mi>e</mi><mi>j&alpha;n</mi></msup><msub><mover><mi>r</mi><mo>&OverBar;</mo></mover><mrow><mi>u</mi><mo>,</mo><mi>v</mi></mrow></msub><mrow><mo>(</mo><mi>n</mi><mo>)</mo></mrow><mo>,</mo></mrow></math> <math><mrow><mn>0</mn><mo>&le;</mo><mi>n</mi><mo>&lt;</mo><msubsup><mi>M</mi><mi>sc</mi><mi>RS</mi></msubsup><mo>,</mo></mrow></math> $M_{\mathrm{sc}}^{\mathrm{RS}}=N_{\mathrm{seq}}^{\mathrm{PUCCH}}$

according to a cyclic shift parameter alpha (n)_sL) obtaining:

<math><mrow><msubsup><mi>r</mi><mrow><mi>u</mi><mo>,</mo><mi>v</mi></mrow><mrow><mo>(</mo><mi>&alpha;</mi><mo>)</mo></mrow></msubsup><mrow><mo>(</mo><mi>n</mi><mo>)</mo></mrow><mo>=</mo><msup><mi>e</mi><mi>j&alpha;n</mi></msup><msub><mover><mi>r</mi><mo>&OverBar;</mo></mover><mrow><mi>u</mi><mo>,</mo><mi>v</mi></mrow></msub><mrow><mo>(</mo><mi>n</mi><mo>)</mo></mrow><mo>,</mo></mrow></math> <math><mrow><mn>0</mn><mo>&le;</mo><mi>n</mi><mo>&lt;</mo><msubsup><mi>M</mi><mi>sc</mi><mi>RS</mi></msubsup></mrow></math>

where α is α (n)_s，l)，

The sequence is used as a basic sequence and is, $M_{\mathrm{sc}}^{\mathrm{RS}}=N_{\mathrm{seq}}^{\mathrm{PUCCH}}.$

3e) mapping

And the M-UE sequentially fills the z (i) sequence after the time domain expansion to the distributed RB pairs according to the sequence of the frequency domain first and the time domain later, and finally completes the mapping of the channel quality report to the physical resources.

On the Backhaul Link, because the RN needs a certain switching time interval between the transceiving switching of the signal relay forwarding, on a configured Backhaul Link uplink subframe, the number of SC-FDMA symbols which can be actually used for uplink transmission is smaller than the number of symbols contained in one subframe, that is, the number of available symbols is smaller than 14 in Normal CP and smaller than 12 in Extended CP, so the channel structure of a physical uplink control channel (R-PUCCH) of the Backhaul Link is also different from that of the PUCCH. Due to different uplink control channel structures, the processing of the channel quality report of the Backhaul Link cannot be performed according to the Direct Link method.

Disclosure of Invention

The invention provides a processing method and a processing device for a channel quality report of Backhaul Link, which effectively realize that an RN carries the channel quality report on an R-PUCCH and transmits the channel quality report to an eNB.

In order to solve the above problem, the present invention provides a method for processing a channel quality report for a backhaul link, including:

a coding step, coding the generated channel quality report to obtain coded information; the relay station determines the information quantity of the coded information according to the format of a physical uplink control channel for bearing the channel quality report and the modulation mode of the channel quality report information; or, determining the information quantity of the coded information according to the configuration indication of the base station;

scrambling, namely scrambling the coded information to obtain a scrambled sequence;

a modulation step, modulating the scrambled sequence to obtain a modulated complex value symbol sequence;

a frequency domain expansion step, namely performing frequency domain expansion on the modulated complex value symbol sequence to obtain a complex value symbol sequence after the frequency domain expansion;

and mapping, namely mapping the complex value symbol sequence after the frequency domain expansion to physical uplink control channel physical resources configured by a system.

Further, the above method may have a feature that the coding step encodes the generated channel quality report using linear coding or convolutional coding.

Further, the method may further include scrambling the encoded information by using a scrambling sequence in the scrambling step, where an initialization parameter of the scrambling sequence is determined according to a relay station identifier of the relay station and/or a cell identifier of a cell in which the relay station is located.

Further, the method may further have a characteristic that, in the modulating step, the relay station selects a modulation mode according to a format of a physical uplink control channel used for carrying the channel quality report, or determines the modulation mode according to a configuration instruction of the base station.

Furthermore, the method can also have the following characteristics,in the frequency domain spreading step, frequency domain spreading is performed on the modulated complex value symbol sequence using a frequency domain spreading sequence, and the frequency domain spreading sequence is determined according to one or more of the following parameters: cell identification of cell where relay station is located and resource index of corresponding physical uplink control channel configured to relay station by system

High layer configuration parameters

And

the present invention also provides a processing apparatus for channel quality report of backhaul link, including:

the coding module is used for coding the generated channel quality report to obtain coded information; the coding module determines the information quantity of coded information according to the format of a physical uplink control channel for bearing a channel quality report and the modulation mode of the channel quality report information; or, determining the information quantity of the coded information according to the configuration indication of the base station;

the scrambling module is used for scrambling the coded information to obtain a scrambled sequence;

a modulation module, configured to modulate the scrambled sequence to obtain a modulated complex value symbol sequence;

a frequency domain expansion module, configured to perform frequency domain expansion on the modulated complex value symbol sequence to obtain a complex value symbol sequence after the frequency domain expansion;

and the mapping module is used for mapping the complex value symbol sequence after the frequency domain expansion to physical uplink control channel physical resources configured by a system.

Further, the apparatus may have the feature of the encoding module encoding the generated channel quality report using linear coding or convolutional coding.

Further, the foregoing apparatus may further have a feature that the scrambling module is configured to determine an initialization parameter of a scrambling sequence according to the relay station identifier and/or a cell identifier of a cell in which the relay station is located, and perform scrambling processing on the encoded information using the scrambling sequence.

Further, the apparatus may further have a feature that the modulation module is configured to select a modulation scheme according to a format of a physical uplink control channel used for carrying the channel quality report, or determine the modulation scheme according to a configuration indication of the base station.

Further, the apparatus may further have the following feature, wherein the frequency domain spreading module is configured to determine the frequency domain spreading sequence according to one or more of the following parameters: cell identification of cell where relay station is located and resource index of corresponding physical uplink control channel configured to relay station by systemHigh layer configuration parametersAnd

and performing frequency domain spreading on the modulated complex value symbol sequence by using the frequency domain spreading sequence.

The invention provides a processing method and a device for a Backhaul Link channel quality report, which effectively realize that the RN carries the Backhaul Link channel quality report on an R-PUCCH and transmits the Backhaul Link channel quality report to an eNB. In addition, the Backhaul Link generally has channel conditions obviously superior to Direct Link, and the uplink transmitting capability of the RN is superior to UE.

Drawings

Fig. 1 is a schematic diagram of a relay network architecture;

fig. 2 is a diagram illustrating a PUCCH structure for carrying a channel quality report under normal CP in an LTE system;

fig. 3 is a schematic diagram of a PUCCH structure for carrying a channel quality report under extended CP in an LTE system;

fig. 4 is a schematic diagram of RB pair configuration of PUCCH in LTE system;

FIG. 5 is a diagram of a channel structure of R-PUCCH format 2 in Normal CP;

FIG. 6 is a diagram of a second R-PUCCH format 2 channel structure in Normal CP;

FIG. 7 is a diagram of the structure of the R-PUCCH format 2 channel in Normal CP;

FIG. 8 is a diagram illustrating an R-PUCCH format 2 channel structure in Extended CP;

FIG. 9 is a diagram of a second R-PUCCH format 2 channel structure in Extended CP;

FIG. 10 is a diagram of the structure of the R-PUCCH format 2 channel in Extended CP;

fig. 11 is a flow chart of a processing method of the present invention for channel quality reporting of the backhaul link;

fig. 12 is a block diagram of a processing apparatus for channel quality reporting for a backhaul link in accordance with the present invention.

Detailed Description

And the eNB configures and indicates the R-PUCCH physical resources of the RN, namely the RB pair resources obtained according to the index number M and the PUCCH physical resource RB pair of the M-UE are at two ends of the system bandwidth, the R-PUCCH and the PUCCH can be configured and multiplexed on the same RB pair, and independent RB pair resources can also be allocated for the R-PUCCH.

There are many R-PUCCH channel structures for carrying channel quality reports, and when the system adopts Normal CP, there are three structures, as shown in fig. 5-7, which are referred to as R-PUCCH format 2 channel structure one, structure two, and structure three in Normal CP, respectively, the allocated physical resource is one RB on each slot, the configured RB pair includes 14 SC-FDMA symbols in total, frequency hopping is performed between slots, and RS signals are carried on #1, #5, #8, #12 symbols in a subframe. For the first structure, symbols #0 and #13 cannot carry signals due to the transceiving switching time interval of the RN, and symbols #2, #3, #4, #6, #7, #9, #10, and #11 carry channel quality reports. For configuration two, #13 symbol cannot carry signals due to the transmit-receive switching time interval of RN, and channel quality reports are carried on #0, #2, #3, #4, #6, #7, #9, #10, #11 symbols. For structure three, #0 symbol cannot carry signals due to the transmit-receive switching time interval of RN, and #2, #3, #4, #6, #7, #9, #10, #11, #13 symbol carries channel quality reports.

When the system adopts Extended CP, there are three structures, as shown in fig. 8-10, which are referred to as R-PUCCH format 2 channel structure one, structure two, and structure three in the Extended CP, respectively, the allocated physical resource is one RB on each slot, the configured RB pair includes 12 SC-FDMA symbols in total, frequency hopping is performed between slots, and RS signals are carried on #3 and #9 symbols in a subframe. For the first structure, symbols #0 and #11 cannot carry signals due to the transceiving switching time interval of the RN, and symbols #1, #2, #4, #5, #6, #7, #8 and #10 carry channel quality reports. For the structure two, the symbol #11 cannot carry signals due to the transceiving switching time interval of the RN, and the symbols #0, #1, #2, #4, #5, #6, #7, #8, and #10 carry channel quality reports. For structure three, symbol #0 cannot carry signals due to the transceiving switching time interval of RN, and symbols #1, #2, #4, #5, #6, #7, #8, #10, #11 carry channel quality reports.

As shown in fig. 11, the processing method for channel quality report of backhaul link provided by the present invention includes the following steps:

step 1101, an encoding step, in which RN encodes the generated channel quality report a (n), where n is 0, 1.

The encoding method may employ linear encoding, convolutional encoding, or other encoding methods.

Wherein:

the information quantity A of the channel quality report is related according to the channel quality information format reported by the RN specifically configured by the eNB, and the value is a positive integer.

The value of the information quantity p of the coded channel quality report is a positive integer, and the RN determines the value according to the following parameters:

an R-PUCCH format for carrying channel quality reports;

configuring the indication for the modulation mode of the channel quality report information by the eNB;

or the value of p indicates RN by eNB configuration.

Step 1102, scrambling step, the RN scrambles b (i):

$\tilde{b}\left(i\right)=(b\left(i\right)+c\left(i\right))\mathrm{<figure-callout\; id="2"\; label="mod"\; filenames="H2009101778616E0000022.png"\; state="\{\{state\}\}">mod</figure-callout>}2,i=\mathrm{0,1},...,p-1$

the scrambled sequence is represented asThe initialization parameter of the scrambling sequence c (i) may be determined by an RN ID and/or a Cell identity (Cell ID) of a Cell in which the RN is located.

Step 1103, modulation step, RN pair

Modulating to obtain a modulated complex value symbol sequence;

RN pairs the above scrambled sequence

And modulating, wherein the modulation mode can adopt Quadrature Phase Shift Keying (QPSK), eight-phase shift keying (8PSK), 16-phase quadrature amplitude modulation (16QAM) or 64-phase quadrature amplitude modulation (64QAM), and the specific modulation mode can be selected by the RN according to the configured R-PUCCH format or indicated by the eNB through configuration. The modulated complex-valued symbol sequence is denoted d (K), K being 0, 1. Wherein K is the number of SC-FDMA symbols which can be used for carrying channel quality report information under the configured R-PUCCH channel format.

Step 1104, a frequency domain spreading step, in which the RN performs frequency domain spreading on the modulated complex value symbol sequence d (K), where K is 0, 1.

<math><mrow><mi>z</mi><mrow><mo>(</mo><msubsup><mi>N</mi><mi>seq</mi><mi>PUCCH</mi></msubsup><mo>&CenterDot;</mo><mi>k</mi><mo>+</mo><mi>i</mi><mo>)</mo></mrow><mo>=</mo><mi>d</mi><mrow><mo>(</mo><mi>k</mi><mo>)</mo></mrow><mo>&CenterDot;</mo><mi>r</mi><mrow><mo>(</mo><mi>i</mi><mo>)</mo></mrow></mrow></math>

k＝0，1，...，K-1

$i=\mathrm{0,1},...,N_{\mathrm{sc}}^{\mathrm{RB}}-1$

Wherein the cyclic shift length $N_{\mathrm{seq}}^{\mathrm{PUCCH}}=12;$

r (i) is a frequency domain spreading sequence, determined according to one or more of the following parameters: cell ID of Cell in which RN is located, and resource index of corresponding R-PUCCH configured to RN by systemHigh layer configuration parameters

Wherein,

in the calculation of related resources, an

The same effect is achieved.

Step 1105, mapping step, RN maps the complex value symbol sequence z (i) after frequency domain expansion to the R-PUCCH physical resource configured by the system in sequence of frequency domain first and time domain second, the configured R-PUCCH physical resource is indexed according to the resource of the corresponding R-PUCCH

High layer configuration parameters

And (4) obtaining.

The RN obtains related resources for carrying a channel quality report according to the used R-PUCCH format 2 channel structure and the system configuration parameter, including physical resources, frequency domain spreading index, and the like, and further details the implementation process of the present invention through specific embodiments below.

Example one

The RN adopts a Normal CP R-PUCCH format 2 structureOne bearer channel quality report, and relevant parameter configuration instructions of the eNB to the RN are as follows:

then according to the calculation method in the summary of the invention, other parameters can be obtained in turn as follows:

$n_{\mathrm{PRB}}=\left\{\begin{array}{cc}0& \mathrm{for\; slot}0\\ N_{\mathrm{RB}}^{\mathrm{UL}}-1& \mathrm{for\; <figure-callout\; id="1"\; label="slot"\; filenames="H2009101778616E0000021.png,H2009101778616E0000022.png"\; state="\{\{state\}\}">slot</figure-callout>}1\end{array}\right.$

<math><mrow><msup><mi>n</mi><mo>&prime;</mo></msup><mrow><mo>(</mo><msub><mi>n</mi><mi>s</mi></msub><mo>)</mo></mrow><mo>=</mo><mfenced open='{' close=''><mtable><mtr><mtd><mn>7</mn></mtd><mtd><mi>for slot</mi><mn>0</mn></mtd></mtr><mtr><mtd><mn>4</mn></mtd><mtd><mi>for slot</mi><mn>1</mn></mtd></mtr></mtable></mfenced></mrow></math>

$n_{\mathrm{cs}}(n_s,l)=\left\{\begin{array}{cc}(n_{\mathrm{cs}}^{\mathrm{cell}}(n_s,l)+7)\mathrm{mod}{N}_{\mathrm{sc}}^{\mathrm{RB}}& \mathrm{for\; slot}0\\ (n_{\mathrm{cs}}^{\mathrm{cell}}(n_s,l)+4)\mathrm{mod}{N}_{\mathrm{sc}}^{\mathrm{RB}}& \mathrm{for\; <figure-callout\; id="1"\; label="slot"\; filenames="H2009101778616E0000021.png,H2009101778616E0000022.png"\; state="\{\{state\}\}">slot</figure-callout>}1\end{array}\right.$

<math><mrow><mi>&alpha;</mi><mrow><mo>(</mo><msub><mi>n</mi><mi>s</mi></msub><mo>,</mo><mi>l</mi><mo>)</mo></mrow><mo>=</mo><mn>2</mn><mi>&pi;</mi><mo>&CenterDot;</mo><msub><mi>n</mi><mi>cs</mi></msub><mrow><mo>(</mo><msub><mi>n</mi><mrow><mi>s</mi><mo>,</mo></mrow></msub><mi>l</mi><mo>)</mo></mrow><mo>/</mo><msubsup><mi>N</mi><mi>sc</mi><mi>RB</mi></msubsup></mrow></math>

according to the parameters, the RN performs physical layer processing and mapping on the channel quality report, and the steps are as follows:

and step 120, the RN encodes the generated channel quality report a (n), wherein n is 0, 1,., a-1, and a is 11, the number of SC-FDMA symbols available for carrying the channel quality report is 8 according to the configured R-PUCCH format, i.e. the R-PUCCH format 2 structure one, and the eNB configuration indicates that the QPSK modulation mode is adopted, then the encoded information amount p is 16, the encoding method adopts linear encoding, and the encoded channel quality report information sequence is denoted by b (i), i is 0, 1,. p-1.

<math><mrow><mi>b</mi><mrow><mo>(</mo><mi>i</mi><mo>)</mo></mrow><mo>=</mo><munderover><mi>&Sigma;</mi><mrow><mi>n</mi><mo>=</mo><mn>0</mn></mrow><mrow><mi>A</mi><mo>-</mo><mn>1</mn></mrow></munderover><mrow><mo>(</mo><mi>a</mi><mrow><mo>(</mo><mi>n</mi><mo>)</mo></mrow><mo>&CenterDot;</mo><msub><mi>M</mi><mrow><mi>i</mi><mo>,</mo><mi>n</mi></mrow></msub><mo>)</mo></mrow><mi>mod</mi><mn>2</mn><mo>;</mo></mrow></math>

n＝0，1，...，A-1

i＝0，1，...p-1

Wherein M is_i，nThe base sequence is linearly encoded for (16, A).

Step 1202, the RN scrambles b (i):

$\tilde{b}\left(i\right)=(b\left(i\right)+c\left(i\right))\mathrm{<figure-callout\; id="2"\; label="mod"\; filenames="H2009101778616E0000022.png"\; state="\{\{state\}\}">mod</figure-callout>}2,i=\mathrm{0,1},...,p-1$

the initialization parameter of the scrambling sequence c (i) is determined by the Cell ID of the Cell in which the RN is located and the RN ID.

Step 1203, RN pairTo perform modulation

RN pairs the above scrambled sequence

And modulating, and if a QPSK modulation mode is adopted according to the configuration instruction of the eNB, modulating a modulated complex value symbol d (k), wherein k is 0, 1.

Step 1204, frequency domain spreading

RN performs frequency domain spreading on the modulated complex value symbol d (k), k being 0, 1.

<math><mrow><mi>z</mi><mrow><mo>(</mo><msubsup><mi>N</mi><mi>seq</mi><mi>PUCCH</mi></msubsup><mo>&CenterDot;</mo><mi>k</mi><mo>+</mo><mi>i</mi><mo>)</mo></mrow><mi>d</mi><mrow><mo>(</mo><mi>k</mi><mo>)</mo></mrow><mo>&CenterDot;</mo><msubsup><mi>r</mi><mrow><mi>u</mi><mo>,</mo><mi>v</mi></mrow><mrow><mo>(</mo><mi>&alpha;</mi><mo>)</mo></mrow></msubsup><mrow><mo>(</mo><mi>i</mi><mo>)</mo></mrow></mrow></math>

k＝0，1，...，7

$i=\mathrm{0,1},...,N_{\mathrm{sc}}^{\mathrm{RB}}-1$

Here, ,

according to alpha (n)_sAnd l) calculating.

Step 1205, RN converts z (i),

the sequence is mapped to the configured RB pair according to the sequence of the frequency domain and the time domain, namely n of the first slot _PRB0, second slot

According to the above process, the RN finally maps the channel quality report to the allocated R-PUCCH resource through coding, scrambling and modulation, as shown in fig. 5, so as to realize effective carrying of the channel quality report on backhaul link.

Example two

The RN adopts a Normal CP R-PUCCH format 2 structure two-bearer channel quality report, and the eNB indicates the configuration of relevant parameters of the RN as follows:

then according to the calculation method in the summary of the invention, other parameters can be obtained in turn as follows:

$n_{\mathrm{PRB}}=\left\{\begin{array}{cc}{N}_{\mathrm{RB}}^{\mathrm{UL}}-1& \mathrm{for\; <figure-callout\; id="0"\; label="slot"\; filenames="H2009101778616E0000022.png,H2009101778616E0000031.png"\; state="\{\{state\}\}">slot</figure-callout>}0\\ 0& \mathrm{for\; <figure-callout\; id="1"\; label="slot"\; filenames="H2009101778616E0000021.png,H2009101778616E0000022.png"\; state="\{\{state\}\}">slot</figure-callout>}1\end{array}\right.$

<math><mrow><msup><mi>n</mi><mo>&prime;</mo></msup><mrow><mo>(</mo><msub><mi>n</mi><mi>s</mi></msub><mo>)</mo></mrow><mo>=</mo><mfenced open='{' close=''><mtable><mtr><mtd><mn>3</mn></mtd><mtd><mi>for slot</mi><mn>0</mn></mtd></mtr><mtr><mtd><mn>8</mn></mtd><mtd><mi>for slot</mi><mn>1</mn></mtd></mtr></mtable></mfenced></mrow></math>

$n_{\mathrm{cs}}(n_s,l)=\left\{\begin{array}{cc}(n_{\mathrm{cs}}^{\mathrm{cell}}(n_s,l)+3)\mathrm{mod}{N}_{\mathrm{sc}}^{\mathrm{RB}}& \mathrm{for\; slot}0\\ (n_{\mathrm{cs}}^{\mathrm{cell}}(n_s,l)+8)\mathrm{mod}{N}_{\mathrm{sc}}^{\mathrm{RB}}& \mathrm{for\; <figure-callout\; id="1"\; label="slot"\; filenames="H2009101778616E0000021.png,H2009101778616E0000022.png"\; state="\{\{state\}\}">slot</figure-callout>}1\end{array}\right.$

<math><mrow><mi>&alpha;</mi><mrow><mo>(</mo><msub><mi>n</mi><mi>s</mi></msub><mo>,</mo><mi>l</mi><mo>)</mo></mrow><mo>=</mo><mn>2</mn><mi>&pi;</mi><mo>&CenterDot;</mo><msub><mi>n</mi><mi>cs</mi></msub><mrow><mo>(</mo><msub><mi>n</mi><mrow><mi>s</mi><mo>,</mo></mrow></msub><mi>l</mi><mo>)</mo></mrow><mo>/</mo><msubsup><mi>N</mi><mi>sc</mi><mi>RB</mi></msubsup></mrow></math>

according to the parameters, the RN performs physical layer processing and mapping on the channel quality report, and the steps are as follows:

in step 1301, the RN encodes the generated channel quality report a (n), where n is 0, 1,., a-1, and a is 12, the number of SC-FDMA symbols available for carrying the channel quality report is 9 according to the configured R-PUCCH format, i.e., the R-PUCCH format 2 structure two, and the eNB configuration indicates that a 16QAM modulation scheme is adopted, so that the encoded information amount p is 36, the encoding method adopts tail-biting convolutional coding with a coding rate of 1/3, and a coded channel quality report information sequence b (i), i is 0, and.

Step 1302, the RN scrambles b (i):

$\tilde{b}\left(i\right)=(b\left(i\right)+c\left(i\right))\mathrm{<figure-callout\; id="2"\; label="mod"\; filenames="H2009101778616E0000022.png"\; state="\{\{state\}\}">mod</figure-callout>}2,i=\mathrm{0,1},...,p-1$

the initialization parameter of the scrambling sequence c (i) is determined by the Cell ID of the Cell in which the RN is located and the RN ID.

Step 1303, RN pairs

To perform modulation

RN pairs the above scrambled sequence

And modulating, and if a 16QAM modulation mode is adopted according to the configuration instruction of the eNB, modulating a modulated complex value symbol d (k), wherein k is 0, 1.

Step 1304, frequency domain spreading

RN performs frequency domain spreading on the modulated complex value symbol d (k), k being 0, 1.

<math><mrow><mi>z</mi><mrow><mo>(</mo><msubsup><mi>N</mi><mi>seq</mi><mi>PUCCH</mi></msubsup><mo>&CenterDot;</mo><mi>k</mi><mo>+</mo><mi>i</mi><mo>)</mo></mrow><mi>d</mi><mrow><mo>(</mo><mi>k</mi><mo>)</mo></mrow><mo>&CenterDot;</mo><msubsup><mi>r</mi><mrow><mi>u</mi><mo>,</mo><mi>v</mi></mrow><mrow><mo>(</mo><mi>&alpha;</mi><mo>)</mo></mrow></msubsup><mrow><mo>(</mo><mi>i</mi><mo>)</mo></mrow></mrow></math>

k＝0，1，...，8

$i=\mathrm{0,1},...,N_{\mathrm{sc}}^{\mathrm{RB}}-1$

Here, ,

according to alpha (n)_sAnd l) calculating.

Step 1305, RN converts z (i),

the sequence is mapped to the configured RB pair according to the sequence of the frequency domain and the time domain, namely the sequence of the first slot

N of the second slot_PRB＝0。

According to the above process, the RN finally maps the channel quality report to the allocated R-PUCCH resource through coding, scrambling and modulation, as shown in fig. 6, so as to realize effective carrying of the channel quality report on backhaul link.

EXAMPLE III

The RN adopts an Extended CP R-PUCCH format 2 structure three-bearer channel quality report, and the eNB indicates the related parameter configuration of the RN as follows:

then according to the calculation method in the summary of the invention, other parameters can be obtained in turn as follows:

$n_{\mathrm{PRB}}=\left\{\begin{array}{cc}1& \mathrm{for\; slot}0\\ N_{\mathrm{RB}}^{\mathrm{UL}}-2& \mathrm{for\; <figure-callout\; id="1"\; label="slot"\; filenames="H2009101778616E0000021.png,H2009101778616E0000022.png"\; state="\{\{state\}\}">slot</figure-callout>}1\end{array}\right.$

<math><mrow><msup><mi>n</mi><mo>&prime;</mo></msup><mrow><mo>(</mo><msub><mi>n</mi><mi>s</mi></msub><mo>)</mo></mrow><mo>=</mo><mfenced open='{' close='' separators=' '><mtable><mtr><mtd><mn>4</mn></mtd><mtd><mi>for slot</mi><mn>0</mn></mtd></mtr><mtr><mtd><mn>7</mn></mtd><mtd><mi>for slot</mi><mn>1</mn></mtd></mtr></mtable></mfenced></mrow></math>

$n_{\mathrm{cs}}(n_s,l)=\left\{\begin{array}{cc}(n_{\mathrm{cs}}^{\mathrm{cell}}(n_s,l)+4)\mathrm{mod}{N}_{\mathrm{sc}}^{\mathrm{RB}}& \mathrm{for\; slot}0\\ (n_{\mathrm{cs}}^{\mathrm{cell}}(n_s,l)+7)\mathrm{mod}{N}_{\mathrm{sc}}^{\mathrm{RB}}& \mathrm{for\; <figure-callout\; id="1"\; label="slot"\; filenames="H2009101778616E0000021.png,H2009101778616E0000022.png"\; state="\{\{state\}\}">slot</figure-callout>}1\end{array}\right.$

<math><mrow><mi>&alpha;</mi><mrow><mo>(</mo><msub><mi>n</mi><mi>s</mi></msub><mo>,</mo><mi>l</mi><mo>)</mo></mrow><mo>=</mo><mn>2</mn><mi>&pi;</mi><mo>&CenterDot;</mo><msub><mi>n</mi><mi>cs</mi></msub><mrow><mo>(</mo><msub><mi>n</mi><mrow><mi>s</mi><mo>,</mo></mrow></msub><mi>l</mi><mo>)</mo></mrow><mo>/</mo><msubsup><mi>N</mi><mi>sc</mi><mi>RB</mi></msubsup></mrow></math>

according to the parameters, the RN performs physical layer processing and mapping on the channel quality report, and the steps are as follows:

step 1401, the RN encodes the generated channel quality report a (n), where n is 0, 1,., a-1, and a is 4, the RN may have 9 SC-FDMA symbols available for carrying the channel quality report according to the configured R-PUCCH format, i.e. R-PUCCH format 2 structure three, and the eNB configuration indicates that the QPSK modulation scheme is used, the encoded information amount p is 18, the encoding method uses linear encoding, and the encoded channel quality report information sequence b (i) is as follows:

<math><mrow><mi>b</mi><mrow><mo>(</mo><mi>i</mi><mo>)</mo></mrow><mo>=</mo><munderover><mi>&Sigma;</mi><mrow><mi>n</mi><mo>=</mo><mn>0</mn></mrow><mrow><mi>A</mi><mo>-</mo><mn>1</mn></mrow></munderover><mrow><mo>(</mo><mi>a</mi><mrow><mo>(</mo><mi>n</mi><mo>)</mo></mrow><mo>&CenterDot;</mo><msub><mi>M</mi><mrow><mi>i</mi><mo>,</mo><mi>n</mi></mrow></msub><mo>)</mo></mrow><mi>mod</mi><mn>2</mn><mo>,</mo></mrow></math>

n＝0，1，...，A-1

i＝0，1，...p-1

wherein M is_i，nThe base sequence is linearly encoded for (18, A).

Step 1402, the RN scrambles b (i):

$\tilde{b}\left(i\right)=(b\left(i\right)+c\left(i\right))\mathrm{<figure-callout\; id="2"\; label="mod"\; filenames="H2009101778616E0000022.png"\; state="\{\{state\}\}">mod</figure-callout>}2,i=\mathrm{0,1},...,p-1$

the initialization parameter of the scrambling sequence c (i) is determined by the Cell ID of the Cell in which the RN is located and the RN ID.

Step 1403, RN Pair

To perform modulation

RN pairs the above scrambled sequence

And modulating, and if a QPSK modulation mode is adopted according to the configuration instruction of the eNB, modulating a modulated complex value symbol d (k), wherein k is 0, 1.

Step 1404, frequency domain spreading

RN performs frequency domain spreading on the modulated complex value symbol d (k), k being 0, 1.

<math><mrow><mi>z</mi><mrow><mo>(</mo><msubsup><mi>N</mi><mi>seq</mi><mi>PUCCH</mi></msubsup><mo>&CenterDot;</mo><mi>k</mi><mo>+</mo><mi>i</mi><mo>)</mo></mrow><mi>d</mi><mrow><mo>(</mo><mi>k</mi><mo>)</mo></mrow><mo>&CenterDot;</mo><msubsup><mi>r</mi><mrow><mi>u</mi><mo>,</mo><mi>v</mi></mrow><mrow><mo>(</mo><mi>&alpha;</mi><mo>)</mo></mrow></msubsup><mrow><mo>(</mo><mi>i</mi><mo>)</mo></mrow></mrow></math>

k＝0，1，...，8

$i=\mathrm{0,1},...,N_{\mathrm{sc}}^{\mathrm{RB}}-1$

Here, ,

and calculating according to the parameters.

Step 1405, RN converts z (i),

the sequence is mapped to the configured RB pair according to the sequence of the frequency domain and the time domain, namely n of the first slot _PRB1, second slot

According to the above process, the RN finally maps the channel quality report to the allocated R-PUCCH resource through coding, scrambling and modulation, as shown in fig. 10, so as to realize effective carrying of the channel quality report on backhaul link.

The present invention also provides a processing apparatus for channel quality report of backhaul link, which is located on a relay, as shown in fig. 12, and includes:

the coding module is used for coding the generated channel quality report to obtain coded information; the coding module determines the information quantity of coded information according to the format of a physical uplink control channel for bearing a channel quality report and the modulation mode of the channel quality report information; or, determining the information quantity of the coded information according to the configuration indication of the base station;

the scrambling module is used for scrambling the coded information to obtain a scrambled sequence;

the modulation module is used for modulating the scrambled sequence to obtain a modulated complex value symbol sequence;

a frequency domain expansion module, configured to perform frequency domain expansion on the modulated complex value symbol sequence to obtain a complex value symbol sequence after the frequency domain expansion;

and the mapping module is used for mapping the complex value symbol sequence after the frequency domain expansion to physical uplink control channel physical resources configured by a system.

Wherein the encoding module is configured to encode the generated channel quality report using linear coding or convolutional coding.

The scrambling module is used for determining initialization parameters of scrambling sequences according to the relay station identification and/or the cell identification of the cell in which the relay station is located, and scrambling the coded information by using the scrambling sequences.

The modulation module is configured to select a modulation scheme according to a format of a physical uplink control channel used for carrying a channel quality report, or determine the modulation scheme according to a configuration indication of a base station. The modulation mode is Quadrature Phase Shift Keying (QPSK), eight phase shift keying (8PSK), 16 quadrature amplitude modulation (16QAM) or 64 quadrature amplitude modulation (64 QAM).

Wherein the frequency domain spreading module is configured to determine a frequency domain spreading sequence according to one or more of the following parameters: cell identification of cell where relay station is located and resource index of corresponding physical uplink control channel configured to relay station by system

High level configurationParameter(s)

And

and performing frequency domain spreading on the modulated complex value symbol sequence by using a frequency domain spreading sequence.

Claims (10)

1. A method for processing channel quality reports for a backhaul link, comprising:

a coding step, coding the generated channel quality report to obtain coded information; the relay station determines the information quantity of the coded information according to the format of a physical uplink control channel for bearing the channel quality report and the modulation mode of the channel quality report information; or, determining the information quantity of the coded information according to the configuration indication of the base station;

scrambling, namely scrambling the coded information to obtain a scrambled sequence;

a modulation step, modulating the scrambled sequence to obtain a modulated complex value symbol sequence;

a frequency domain expansion step, namely performing frequency domain expansion on the modulated complex value symbol sequence to obtain a complex value symbol sequence after the frequency domain expansion;

and mapping, namely mapping the complex value symbol sequence after the frequency domain expansion to physical uplink control channel physical resources configured by a system.

2. The method of claim 1, wherein in the encoding step, the generated channel quality report is encoded using linear coding or convolutional coding.

3. The method of claim 1, wherein in the scrambling step, the encoded information is scrambled by using a scrambling sequence, and an initialization parameter of the scrambling sequence is determined according to a relay station identifier of the relay station and/or a cell identifier of a cell in which the relay station is located.

4. The method of claim 1, wherein in the modulating step, the modulation scheme is selected by the relay station according to a format of a physical uplink control channel used for carrying the channel quality report, or is determined according to a configuration indication of the base station.

5. The method of claim 1, wherein in the frequency domain spreading step, the sequence of complex valued symbols is frequency domain spread using a frequency domain spreading sequence determined based on one or more of the following parameters: cell identification of cell where relay station is located and resource index of corresponding physical uplink control channel configured to relay station by system

High level configuration parameterNumber of

And

6. a processing apparatus for channel quality reporting for a backhaul link, comprising:

the coding module is used for coding the generated channel quality report to obtain coded information; the coding module determines the information quantity of coded information according to the format of a physical uplink control channel for bearing a channel quality report and the modulation mode of the channel quality report information; or, determining the information quantity of the coded information according to the configuration indication of the base station;

the scrambling module is used for scrambling the coded information to obtain a scrambled sequence;

a modulation module, configured to modulate the scrambled sequence to obtain a modulated complex value symbol sequence;

a frequency domain expansion module, configured to perform frequency domain expansion on the modulated complex value symbol sequence to obtain a complex value symbol sequence after the frequency domain expansion;

and the mapping module is used for mapping the complex value symbol sequence after the frequency domain expansion to physical uplink control channel physical resources configured by a system.

7. The apparatus of claim 6, wherein the encoding module is configured to encode the generated channel quality report using linear coding or convolutional coding.

8. The apparatus of claim 6, wherein the scrambling module is configured to determine an initialization parameter of a scrambling sequence according to a relay station identifier and/or a cell identifier of a cell in which the relay station is located, and perform scrambling processing on the encoded information using the scrambling sequence.

9. The apparatus of claim 6, wherein the modulation module is configured to select a modulation scheme according to a format of a physical uplink control channel used for carrying the channel quality report, or determine the modulation scheme according to a configuration indication of the base station.

10. The apparatus of claim 6, wherein the frequency domain spreading module is configured to determine a frequency domain spreading sequence based on one or more of the following parameters: cell identification of cell where relay station is located and resource index of corresponding physical uplink control channel configured to relay station by system

High layer configuration parameters

And

and performing frequency domain spreading on the modulated complex value symbol sequence by using the frequency domain spreading sequence.

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