CN105474564B - Interference signal used in wireless communication system controls information acquisition method and device - Google Patents
Interference signal used in wireless communication system controls information acquisition method and device Download PDFInfo
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- CN105474564B CN105474564B CN201480046388.7A CN201480046388A CN105474564B CN 105474564 B CN105474564 B CN 105474564B CN 201480046388 A CN201480046388 A CN 201480046388A CN 105474564 B CN105474564 B CN 105474564B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0033—Systems modifying transmission characteristics according to link quality, e.g. power backoff arrangements specific to the transmitter
- H04L1/0034—Systems modifying transmission characteristics according to link quality, e.g. power backoff arrangements specific to the transmitter where the transmitter decides based on inferences, e.g. use of implicit signalling
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
- H04J11/0023—Interference mitigation or co-ordination
- H04J11/0026—Interference mitigation or co-ordination of multi-user interference
- H04J11/0036—Interference mitigation or co-ordination of multi-user interference at the receiver
- H04J11/004—Interference mitigation or co-ordination of multi-user interference at the receiver using regenerative subtractive interference cancellation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0045—Arrangements at the receiver end
- H04L1/0046—Code rate detection or code type detection
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0045—Arrangements at the receiver end
- H04L1/0047—Decoding adapted to other signal detection operation
- H04L1/0048—Decoding adapted to other signal detection operation in conjunction with detection of multiuser or interfering signals, e.g. iteration between CDMA or MIMO detector and FEC decoder
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0072—Error control for data other than payload data, e.g. control data
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0058—Allocation criteria
- H04L5/0073—Allocation arrangements that take into account other cell interferences
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Quality & Reliability (AREA)
- Mobile Radio Communication Systems (AREA)
- Noise Elimination (AREA)
Abstract
Provide a kind of interference signal information acquisition method and device for using in a wireless communication system.The interference signal information detecting method of terminal for using in a wireless communication system includes: the first control message part and the second control message part that other users are obtained from received signal；It generates and controls message part identical first control information candidate on bit length with first；Information is controlled based on the first control information candidate blind decoding first；And the interference signal of other users is detected and removed from received signal based on the first control information of blind decoding.
Description
Technical field
This disclosure relates to a kind of wireless communication system.More specifically, this disclosure relates to for making in a wireless communication system
Interference signal controls information acquisition method and device.
Background technique
Mobile communication system is developed as user and provides voice communications services on the move.With the rapid advances of technology,
Current mobile communication system has evolved to supports high speed data communication services except the service towards voice.However,
In current mobile communication system limited resource and the user of the service of higher speed is required to push evolve to it is more advanced
Mobile communication system.
If terminal can remove interference signal based on the information and inter-cell interference information about multi-access inference (MAI),
Then this receptivity for potentially contributing to enhancing terminal.Such interference information increases at multi-user's multiple-input and multiple-output (M IMO)
And the accuracy of the interference signal model in cell edge environment, it enables the terminal to more effectively eliminate interference.
However, in a wireless communication system, in such as high-speed packet access (HSPA), base station needs using terminal specific
Identifier, such as the scrambled additional operation of radio network temporary identifier (RNTI) Lai Zhihang coded data.In this feelings
Under condition, since terminal does not know the identifier of other terminals, so being difficult to obtain the control information of other terminals.
Summary of the invention
Technical problem
Therefore it needs to study the method for terminal itself, to remove interference signal.
Above- mentioned information are proposed as just background information, to help understanding of the invention.For any of above aspect whether
It can be applicable in as the prior art relative to the disclosure, not determined, also not asserted.
Solution
Each aspect of the present invention is used at least solve the above problems and/or disadvantage, and provides at least advantages described below.
Therefore, it is an aspect of the present invention to provide a kind of interference signal blind examinations for the terminal used in cellular radio Communication system
Survey method and apparatus.
According to an aspect of the present invention, a kind of interference signal of terminal for using in a wireless communication system is provided
Information detecting method.Interferer signal detection method includes controlling message part from the first of the signal acquisition other users received
With the second control message part, bit length the first control information candidate identical with the first control message part is generated, is based on
First control information candidate to carry out the first control information blind decoding, and based on the first control information of blind decoding come from connecing
The interference signal of other users is detected and removed in the collection of letters number.
Other side according to the invention is provided for being used in a wireless communication system for obtaining interference letter
The terminal of number information.The terminal includes: transceiver, be configured as to sent and received signal from base station and controller,
It is configured to control from the first information part for obtaining other users in signal and the second control message part is received, to produce
Raw bit length the first control information candidate identical with the first control message part controls information candidate based on first come to the
One control information carries out blind decoding, and is detected from received signal based on the first control information of blind decoding and removed it
The interference signal of his user.
From in conjunction with attached drawing, disclose the various embodiments of the disclosure it is described in detail below in, other aspects of the present invention,
Advantage and notable feature will become apparent for those skilled in the art.
Beneficial effect
The interference signal control information acquisition method and device of the disclosure are capable of the control information of blind Detecting other users.This
Disclosed interference signal control information acquisition method and device are for the control information acquisition based on the blind Detecting from other users
Interference signal information be advantageous for interference signal to remove.
Detailed description of the invention
In the following description which refers to the attached drawing, above and other aspects, features and advantages of some embodiments of the disclosure
It will be apparent from, in the accompanying drawings:
Fig. 1 is shown according to the embodiment of the present disclosure, is taken for generating high speed signaling control channel (HS-SCCH)
Control letter of the band about the high-speed downlink shared channel (HS-DSCH) in the access of downlink packet at high speeds (HSDPA)
The figure of the configuration of the device of the common control channel of breath；
Fig. 2 is the figure for showing the process of the generation control information according to the embodiment of the present disclosure；
Fig. 3 is the block diagram for showing the configuration of the common HSDPA receiver according to the embodiment of the present disclosure；
Fig. 4 is the figure for showing the control information processing method according to the embodiment of the present disclosure；
Fig. 5 is shown according to the embodiment of the present disclosure, is wherein being located at the terminal of cell edge in cellular radio Communication system
The figure of the exemplary cases of influence is disturbed in system；
Fig. 6 is the block diagram for showing the configuration of receiver according to an embodiment of the present disclosure；
Fig. 7 is the side for showing the configuration that information blind Detecting unit is controlled according to the interfered cell of Fig. 6 of the embodiment of the present disclosure
Block diagram；And
Fig. 8 is the flow chart for showing the interference cancellation process of the terminal according to the embodiment of the present disclosure.
It will be noted that throughout the appended drawings, similar reference number is for describing the same or similar element, feature
And structure.
Specific embodiment
Being described below to assist each of the disclosure as defined by the spirit and scope of the invention referring to attached drawing is provided
The comprehensive understanding of kind embodiment.Including various specific details to help to understand, but these will be regarded as merely illustrative.
Therefore, those skilled in the art will recognize that, various embodiments described herein can be carried out with variations and modifications and
The scope of the present disclosure and spirit are not departed from.In addition, can be omitted for clarity and conciseness for well known function and structure
Description.
The term used in following described and claimed and word are not limited to literal meaning, but only by
Inventor is for enabling the disclosure to understand and consistent understanding.Therefore, it will be clear for those skilled in the art that providing
Being described below for the various embodiments of the disclosure is merely illustrative purpose, rather than in order to limit by appended claims and its
The purpose of the disclosure defined by equivalent.
It is understood that singular " one ", "one" and "the" include plural, unless context is clearly another
There is regulation.Thus, for example, referring to that " assembly surface " includes referring to surface as one or more.
In addition, in the detailed description of function and structure well known in the art, and technology not directly related with the present invention
Appearance can be omitted.This purpose is to omit unnecessary description, so that the theme of the disclosure is clear.
For the same reason, some elements are exaggerated, are omitted or simplified in the accompanying drawings, and element in practice can
With from the accompanying drawings shown in those of different size and/or shapes.Identical reference label is used to refer to throughout the drawings
For the same or similar component.
The advantages of disclosure and feature and realize that their method can be by reference to various embodiments in detailed below
Description and attached drawing and be understood more readily by.But the disclosure can be presented as many different forms, and should not be explained
To be limited to various embodiments set forth herein.Make the disclosure that will be thorough and complete on the contrary, providing these various embodiments
, and the concept of the disclosure is comprehensively communicated to those skilled in the art, and the disclosure will be only by the attached claims
Book limits.Throughout the specification, the similar element of similar reference numbers.
It should be appreciated that the combination of each of flowchart and or block diagram piece and the block in flowchart and or block diagram can
To be realized by computer program instructions.These computer program instructions be provided to general purpose computer, special purpose computer or
The processor of other programmable data processing units of person is to generate a kind of machine, so that via computer or other programmable datas
Instruction performed by the processor of processing unit generates to specify in the block of flowchart and or block diagram or multiple pieces
The device of function action.These computer program instructions, which can also be stored in, can guide computer or other programmable datas
In processing unit computer-readable memory operate in a specific manner, so that being stored in the instruction in computer-readable memory
Generating includes the manufacture object for realizing the command device for the function action specified in the block of flowchart and or block diagram or multiple pieces
Product.The computer program instructions can also be loaded into computer or other programmable data processing units, so that a series of
Operating procedure will execute to generate computer implemented process on a computer or other programmable device, count so that executing
Instruction on calculation machine or other programmable devices provides to specify in the block of flowchart and or block diagram or multiple pieces
The step of function action.
In addition, corresponding block diagram can show including for execute specific logical function at least one or more is executable
The module, section of instruction or the part of code.It is additionally noted that the function of block can be in many variations with different
Sequence come carry out.For example, two continuous blocks can be executed substantially simultaneously, or may be with opposite according to their function
Sequence executes.
Term " module " according to an embodiment of the present disclosure is it is meant that but be not limited to use in the software for executing certain tasks or hard
Part component, such as field programmable gate array (FPGA) or specific integrated circuit (ASIC).Module can be advantageously configured for
It resides on addressable storage medium, and is configured as executing on the one or more processors.Therefore, side by way of example
Formula, module may include component, as component software, the component software of object-oriented, class component and task component, process, function,
Attribute, process, subprogram, the section of program code, driver, firmware, microcode, circuit, data, database, data structure, table,
Array and variable.The function of providing in component and module can be combined into less component and module, or be further separated into
Additional component and module.In addition, component and module may be implemented such that it is executed in equipment or secure multimedia card
One or more CPU.
This disclosure relates to interference signal information is based on, in particular, the interference elimination method of interference signal control information, is used for
The extractive technique of receptivity enhancing in interference region in cellular radio Communication system.
By removing interference signal based on multi-access inference (MAI) or inter-cell interference (ICI) information, terminal obtains acceptance
It can gain.Such interference information increases the interference letter neutralized in cell edge environment at multi-user's multiple-input and multiple-output (MI MO)
The accuracy of number model, enables the terminal to more effectively eliminate interference.
This disclosure relates to a kind of for blind Detecting interference letter in the third generation (3G) high-speed packet access (HSPA) system
The method of breath.
In a wireless communication system, if terminal is attached to base station, base station is by unique user equipment (UE) identifier
(ID) terminal is distributed to be identified.Meanwhile with by common downlink control channel come to target terminal, that is, mesh
The mode that UE sends data channel information and target UE ID is marked, data channel is distributed to target UE in base station.
Then, each terminal compares as the decoded result of control channel and the UE ID of the UE ID obtained and distribution, with
Determine whether to execute data channel decoding.
Fig. 1 is shown according to the embodiment of the present disclosure, is taken for generating high speed signaling control channel (HS-SCCH)
Control letter of the band about the high-speed downlink shared channel (HS-DSCH) in the access of downlink packet at high speeds (HSDPA)
The figure of the configuration of the device of the common control channel of breath.
It can produce the first control information creating unit 110 of the part HS-SCCH 1 and can produce the part HS-SCCH 2
The second control information creating unit 120 generate modulation index and code and distribute information to each data channel, such as HS-DSCH.
Cyclic redundancy check (CRC) generates & radio network temporary identifier (RNTI) masking unit 130 using such as
First control information of the part HS-SCCH 1 and the second of such as part HS-SCCH 2 control information to generate as error detection
16 CRC informations of code, to check in decoding result in the presence/absence of mistake.CRC generates &RNTI masking unit 130 and utilizes
UE ID, that is, RNTI shelters 16 CRC, to check whether the resource allocation of corresponding terminal can be used.The CRC generates &
The CRC of masking is added to the second control information for being transferred to coding unit by RNTI masking unit 130, that is, the part HS-SCCH
2 ending.
Coding unit includes: the first channel encoding unit 140, single with the coding and the second channel coding that execute channel 1
Member 150 is each responsible for coding the first control information, that is, the part HS-SCCH 1 and the second control to execute the coding of channel 2
Information, that is, the part HS-SCCH 2.
Similarly, de-rate matching unit includes: first rate matching unit 160 to execute rate-matched 1 and the second rate
Matching unit 170 is to execute rate-matched 2.
The specific scrambling unit 180 of UE is only to carry out scrambled functional block to the first control information.UE specifically scrambles list
Member 180 generates the random scrambled code for being based on UE ID (such as RNTI), and is executed using generated code for first rate
The scrambling of the output of matching unit 160.In addition, the device of Fig. 1 includes physical channel map unit 190.
If analogized from the description above, the second control information can be solved in the case where not having UE ID (i.e. RNTI)
Code, and the first control information cannot be descrambled using UE ID.
Fig. 2 is the figure for showing the process of the generation control information according to the embodiment of the present disclosure.
Due in addition to information with the length of bit come other than indicating, the feature described in Fig. 2 is similar in Fig. 1,
So omitting detail explanation herein.
Fig. 3 is the block diagram for showing the configuration of the HSDPA receiver according to the embodiment of the present disclosure.
Referring to Fig. 3, HSDPA receiver may include: serving cell control information detecting unit 310,320 and of demodulating unit
Decoding unit 330.
The serving cell control information detecting unit 310 of detection HS-SCCH using the UE ID distributed by serving cell (i.e.
RNTI) come to received control information, HS-SCCH is demodulated and decoded.Serving cell controls information detecting unit 310 and verifies
The validity of decoding result.If decoding result is that effectively, serving cell controls information detecting unit 310 to demodulating unit
320 send from the first control information, the solution of (i.e. the part HS-SCCH 1) and the second control information (i.e. the part HS-SCCH 2)
The information about data channel (i.e. HS-DSCH) extracted in code result.
Execute HS-DSCH demodulation demodulator 320 using from control information (i.e. HS-SCCH) in extract modulation index and
Received signal solution is transferred to data channel, i.e. HS-DSCH by the code resource of distribution.Demodulating unit 320 is to decoding unit 330
Send demodulation result.
330 decoding data channel of decoding unit, to obtain the data sent by base station.
Fig. 4 is the figure for showing the control information processing method according to the embodiment of the present disclosure.
For controlling information (i.e. HS-SCCH), according to the first control information bit, i.e. part 1 bit and the second control
Information bit, i.e. part 2 bit generate CRC bit.Therefore, in order to decode all control information bits, i.e. HS-SCCH
Information bit should then execute detection and decoding for the first and second control both informations, and the inspection for CRC result
It looks into.
At this point, the channelization codes of the other users of higher notice up to 4, the control information including corresponding terminal
The channelization codes of (i.e. HS-SCCH).As a result, control information (i.e. HS-SCCH) inspection that terminal needs for about up to 4
All CRC are looked into as a result, distributing to the control information bit of the terminal, i.e. HS-SCCH information bit with selection.
Referring to Fig. 4, demapping physical channels unit 490 is for the semiology analysis physics that is included in the time slot 0 of subframe
Channel demapping, with decoding the first control information bit, i.e. 1 information bit of part.
Then, UE specific Descrambling unit 480 is executed using UE ID and the symbol of demapping is gone to shelter, in this feelings
Under condition, 3G partner program (3GPP) standard can be suitable for 40 bits to obtain benefit by the unique UE ID of extension
The UE ID of masking is removed with the first control information.
First drop volume (derate) matching unit 460, which executes, matches the drop volume for removing the symbol of masking.
First channel decoding unit 440, which executes, decodes the Viterbi (Viterbi) for dropping the matched symbol of volume.
During UE ID goes masking, the being corrected property of code word for controlling information (i.e. HS-SCCH) accordingly is restored, and
The code word of the HS-SCCH of another user is further modified, so that distribute to the control information (i.e. HS-SCCH) of other users
The decoder output degree magnitude of decoder output metric (metric) value and the control information (i.e. HS-SCCH) of corresponding terminal is not
Together.First channel decoding unit 440 relatively between metric select to have the control information of highest reliability (i.e.
HS-SCCH) as the first control information, the i.e. bit of the part HS-SCCH 1.
Then, the first control information resolution unit 410 uses selected control information, i.e. the channelizing generation of HS-SCCH
Code controls information bit to detect and decode be comprised in the first and second time slots second.
Similarly, the second control information decoding process is carried out with the opposite sequence of cataloged procedure.
Using channelization codes detection second control information symbol sequentially by demapping physical channels unit 490, hold
Second drop volume matching unit 470 of row drop volume matching 2 and 450 place of second channel decoding unit that Veterbi decoding can be executed
Reason.CRCJiao Yan &RNTI demasking unit 430 adds decoded first control information bit to the ratio obtained by above-mentioned processing
It on spy, and executes whether CRC is succeeded with determining decoding on it, and the bit added is provided and is parsed to the second control information
Unit 420.
Fig. 5 is shown according to the embodiment of the present disclosure, is wherein being located at the terminal of cell edge in cellular radio Communication system
The figure of the exemplary cases of influence is disturbed in system.
Referring to Fig. 5, there may be from neighboring community at the cell edge region 500 in cellular radio Communication system
Interference.In general, may include the inter-cell interference signals from neighboring community 510 by 530 received signal of terminal, and from clothes
Business base station 520 is sent to the signal of terminal 530.Therefore, the interference signal from neighboring community 510 causes small from servicing in demodulation
Performance decline in 520 received signal of area.
It, may be by by the letter about interference signal if terminal 530 can obtain the information about interference signal
The demodulation for receiving signal is arrived in breath reflection, or, in other words, by demodulating received letter according to the information about interference signal
Number, Lai Tigao receptivity.In order to extract the information about interference signal, the interference that enhancing can be used in terminal 530, which is eliminated, is calculated
Method, such as joint detection algorithm guarantee good receptivity.
However, as in common HSPA, the service that terminal 530 can only receive own is small in wireless communication standard
Area RNTI.This means that terminal 530 cannot extract the information about interfered cell and interference signal, and therefore, it is limited to
Inter-cell interference cancellation.Under the exemplary cases of HSPA, since the RNTI that coded data is utilized as terminal identifier adds
It disturbs, so HSPA controls information, that is, HSPA HS-SCCH will not be decoded in the case where the RNTI of not corresponding terminal.
The present disclosure proposes a kind of methods for being able to solve the above problem.In detail, according to an embodiment of the present disclosure
Control information about other terminals of terminal blind decoding and detection, and reflect in processing received signal the control of other terminals
Signal.The characteristic of the disclosure is described more detail below.
Fig. 6 is the block diagram for showing the configuration of receiver according to an embodiment of the present disclosure.
Serving cell controls information detecting unit 610, is alternatively referred to as serving cell HS-SCCH detector 610, execution pair
The demodulation and decoding of received control information (i.e. HS-SCCH) using the UEID (i.e. RNTI) distributed by serving cell, and test
Card institute it is received control information validity.If control information is effective, serving cell control information detecting unit 610
It sends about the decoding knot from the first control information (i.e. the part HS-SCCH 1) and the second control information (i.e. the part HS-SCCH 2)
The information of the HS-DSCH extracted in fruit is alternatively referred to as HS-DSCH demodulator 620 to data demodulation unit 620.
Interfered cell controls information blind Detecting unit 640, is referred to as interfered cell HS-SCCH blind tester 640,
Execute the demodulation to interfered cell signal.Interfered cell control information blind Detecting unit 640 generates candidate UEID, i.e., candidate
RNTI, and the decoded control information detected by blind HS-SCCH.Interfered cell controls information blind Detecting unit 640 and will wait
UE ID and decoded control information are selected, is sent to control information reliability inspection unit 650 together with reliability information, it can also
Referred to as HS-SCCH information reliability detector 650.
The control information reliability inspection unit 650 for executing the inspection of HS-SCCH information reliability determines use about decoding
As a result reliability information, for example, the soft metric of decoding unit and whether the interference information of Blind extracting effective.If interference information
Effectively, then control information reliability inspection unit 650 to data demodulation unit 620 (it is alternatively referred to as HS-DSCH demodulator 620)
It sends for eliminating decoded information used in interference.
Data decoding unit 630 can provide the reliability information (such as soft metric) about final decoded data to make
For decoded byproduct.
In best channel circumstance, for example, having high s/n ratio (SNR), decoding error is hardly happened, also,
This when, reliability have very high value.In the case where high reliablity, it may be determined that successfully decoded and therefore is related
The control information (i.e. HS-SCCH) of other users be effective.
In a similar way, data decoding unit 630 can recompile decoded data, to be based on from input data extraction
The reliability information of difference.It is judged as effective control information, i.e. HS-SCCH is sent to interference cancellation receiver, to be used for
It is used in demodulation data channel.
Data demodulation unit 620 (i.e. HS-DSCH demodulator 620) can be used modulation index (such as modulation order) and from clothes
The code resource for the distribution extracted in business and interference control information, to remove interference signal from received signal.Modulation unit
620 can demodulate the data of serving cell, and send data decoding unit 630 for demodulation result.
Although description be for wherein terminal includes the illustrative situation of multiple units, the present disclosure is not limited to
This.For example, terminal may include for the transceiver that is sent and received signal from base station, and for controlling the whole of the terminal
The controller that gymnastics is made.
In this case, control unit obtains the first and second control letters about other users from received signal
Part is ceased, the first candidate control information of the bit length for corresponding to the first control message part is generated, based on the first candidate control
Information processed executes the blind decoding to the first control information, and based on the first control information of blind decoding come from received data
The interference signal of detection and removal other users.
Terminal can be implemented according to various embodiments, and be not only restricted to any embodiment of the disclosure.
Fig. 7 is the side for showing the configuration that information blind Detecting unit is controlled according to the interfered cell of Fig. 6 of the embodiment of the present disclosure
Block diagram.
Referring to Fig. 7, interfered cell controls information blind Detecting unit 640 can include: other cell demapping physical channels lists
Member 710, second controls info decoder 720, first and controls information candidate information generator 730 and the first control information blind decoding
Device 740.
Other cell demapping physical channels units 710 demodulate the signal of other cells from received signal, and export the
One control information, that is, the part HS-SCCH 1 demodulated and the second control information, that is, the part HS-SCCH 2.
In this case, because not needing UE ID, i.e. RNTI, so the second control information, that is, the part HS-SCCH 2
Volume matching unit 722 can drop and for executing by second for executing drop volume matching 2 of the first control info decoder 720
The second channel decoding unit 724 of channel decoding 2 decodes.
For the first control information blind decoding, that is, 1 blind decoding of the part HS-SCCH, by being sheltered using CRC and RNTI
Decoded, decoded second control information, that is, the part HS-SCCH 2 and decoded second control information, that is, HS-
16 bits of the tail portion of the part SCCH 2 are sent to the first control information blind decoding device 740.
First control information includes 8 bit informations.That is, the first control information can be made of 8 information bits.Phase
Ying Di, the first control information can indicate up to 256 kinds of candidate data, and allow to execute the candidate production in the part HS-SCCH 1
The first raw control information candidate information generator 731 arrives corresponding coded data.
First control information candidate of the CRC generation unit 732 based on hypothesis, that is, the part HS-SCCH 1 is candidate, and by executing
The part HS-SCCH 2 decoded second controls the second control information that information decoding unit 720 obtains and waits to generate 256 CRC
Choosing.
CRC demasking unit 733 is using 16 bit of candidate's CRC demasking tail portion as the second control information (i.e. HS-
The part SCCH 2) decoding result, to generate 256 candidate RNTI.
Candidate UE specifically shelters sequence production unit 734 and generates 256 using candidate RNTI according to scheduled rule
Candidate scramble sequence is used for scrambling control information coded data, i.e. HS-SCCH coded data.
256 generated by candidate the first control information candidate generation unit 731 generated in the part HS-SCCH 1 can be executed
A candidate's HS-SCCH data are by that can execute the first control information coding unit 735 and rate that the part HS-SCCH 1 encodes
Matching unit 736 is handled, to generate the control information datas of candidate first of 256 codings, i.e. the candidate part HS-SCCH 1
Coded data.
First control information blind decoding device 740, is referred to as blind 1 decoder 740 of the part HS-SCCH, measures in UE
The data of specific scrambling coding are candidate and utilize the related coefficient between the data of the first control information demodulation by demodulating unit.
The first control selection of information blind decoding device 740 has the first control information candidate of highest related coefficient.
Executing UE, specifically the specific scrambling unit 741 of scrambled UE uses the data candidates of 256 codings and corresponding
Scrambling code candidate generates scrambling result.
Maximum likelihood (ML) decoding unit 742 calculates received through adjusting from other cell demapping physical channels units 710
First control information data (i.e. the part HS-SCCH 1) of system solves adjusting data and by 256 caused by the specific scrambling unit of UE
Related coefficient between a scrambled coded data.
Fig. 8 is the flow chart for showing the interference cancellation process of terminal according to an embodiment of the present disclosure.
Interference cancellation process according to the terminal of the embodiment of the present disclosure includes: to obtain the first and second information of another user
Part generates the first control information candidate of the first control of matching information on bit length, based on the first control information candidate
Blind decoding first controls information, and the based on blind decoding first control information detects the interference of other users from received signal
The operation of signal.
Referring to Fig. 8, a kind of method that first based on blind decoding controls information to detect and eliminate interference signal is provided.
Interference cancellation process is more fully described below with reference to Fig. 8.
Terminal executes control information demodulation and demapping in operation S810 first.This may include detection terminal use by
Higher notice channelization codes and currently monitoring, other users second control information symbol, that is, another use
2 symbol of the part HS-SCCH at family.By this process, available the first and second control letters about other users of terminal
Cease part.
Then, terminal the second control of decoding message part at operation S820.For this purpose, terminal is believed by physics
Road demapping, the matching of drop volume and channel decoding are to detect and decode the second control information.As this process as a result, terminal
The decoded bits information of available second control information.Terminal can determine the second decoded control message part as second
Control information.
Next, the bits that terminal generates 256 codings for controlling message part for first in operation S830 are candidate.
In the case where HS-SCCH Class1, the first control message part (i.e. part 1) is 8 bit longs.Therefore, it is necessary to consider 256
The candidate that a bit sequence controls message part as first.
Next, terminal generates 256 CRC for corresponding to 256 first control message part candidates in operation S840
It is candidate.As noted previously, as only CRC bit shelters UE ID during coding second controls information, so information bit is protected
It holds as former state, without processed.
Therefore, terminal combinations correspond to the first control message part and the second control message part, that is, 2 information of part
256 candidate bit sequences, to generate 256 CRC candidates.
Next, terminal exports 256 UE ID, such as RNTI from 256 CRC candidates in operation S850.For reality
Existing this point, the part CRC of the second control information bit that terminal compares 256 CRC candidates and determined, so as to by reference to
First controls information sequence (1 information sequence of part) to estimate the UE ID of masking.
By the above process, it is candidate that 256 16 bit UE ID are produced.
Then, terminal generates in relation to and/or is associated in 256 scrambling sequences of 256 RNTI candidates in operation S860
Column.In detail, the UE ID or RNTI for 256 16 bits that terminal processes are estimated in prior operation, to generate 40 according to standard
The masking sequence of bit.
Next, terminal utilizes the first control information bit in operation S870, that is, 256 candidates of bit sequence come
Scrambling, that is, the bit sequence of coding is sheltered, or, in other words, scramble 256 first controls associated with scrambler bits sequence
Message code bit sequence processed.In detail, terminal is sequestered in it using coding and the first control information candidate of rate-matched
The masking pattern (pattern) of 256 40 bits generated in preceding operation.In embodiment of the disclosure, masking processing can be with
Referred to as blind decoding operates.
Then, terminal calculates in operation S880 in candidate bit sequence, that is, first controls the masking candidate of information and connect
Related coefficient between the first demodulated control information of the signal of receipts.That is, terminal calculating generates in operation before
256 masking 40 bit informations and other users it is decoded first control information between related coefficient.Terminal is most
The the first control information for selecting and/or determining afterwards the sequence for corresponding to highest related coefficient, the first control as other users
Information.
The related coefficient used in above process can be expressed as formula 1.
[mathematical expression 1]
ck[i]: the ith bit value of k-th of scrambled coded data candidate
Y [i]: i-th of soft bit values of adjusting data are solved
mk: the related coefficient between adjusting data is conciliate in k-th of scrambled coded data candidate
Nbit: the quantity of the coded-bit of coded data
Finally, terminal is sent in operation S890, the first control information with maximum correlation coefficient, RNTI is candidate and uses
Equipment is checked to control information reliability in the related coefficient of marginal testing, or, in other words, terminal, which determines, has highest
The sequence of related coefficient controls information as the first of other users.
If reliability is verified, terminal determines the control information of the first control information as other users.
The identified first information of other users may include letter associated with the data channel of other users is used for
Road code and modulation index information.Believed using channelization codes associated with the data channel of other users and modulation index
Breath, terminal can check the interference signal of other users.
Therefore, terminal can remove the interference signal as caused by other users from received signal, needed for acquisition
Signal.
In a manner of the control signal of blind Detecting other users and the information extracted about the interference signal of other users, this
Disclosed interference signal control information acquisition method and device are advantageous in terms of removing interference signal from received signal.
As described above, the interference signal control information acquisition method and device of the disclosure are capable of the control of blind Detecting other users
Information processed.The interference signal control information acquisition method and device of the disclosure are in the control letter based on the blind Detecting from other users
The interference signal information obtained is ceased to be advantageous to remove interference signal aspect.
Although the disclosure has shown and described referring to various embodiments, it will be appreciated by those skilled in the art that can be with
In the case where not departing from the spirit and scope of the present disclosure as defined by the following claims and their equivalents, here in form
With various changes can be carried out in details.
Claims (18)
1. a kind of interference signal information detecting method of terminal in a wireless communication system, which comprises
The the first control message part and the second control message part of other terminals are obtained from received signal；
Generate multiple first control information candidates corresponding with the first control bit length of message part；
Information is controlled based on the multiple first control information candidate blind decoding first；And
The interference signal of other terminals is detected and removed from received signal based on the first control information of blind decoding.
2. according to the method described in claim 1, the first control message part of the acquisition and the second control message part include:
The second control of decoding information from the second control message part.
3. the first control message part is 8 bit longs according to the method described in claim 2, wherein, and
Wherein, the generation of the multiple first control information candidate includes 256 candidates for generating the first control information bit.
4. according to the method described in claim 3, wherein, the generation of the multiple first control information candidate includes:
Candidate cyclic redundancy check (CRC) is generated based on the candidate of the first control information bit and decoded second control information
Information；And
Candidate terminal identifier is obtained from generated candidate CRC information.
5. according to the method described in claim 4, wherein, blind decoding first controls information and includes:
Masking sequence is generated based on acquired candidate terminal identifier；And
Based on the masking sequence, the candidate of coding the first control information bit.
6. according to the method described in claim 5, wherein, blind decoding first control information include: based on received signal and
First controls the candidate coding result of information bit to determine the first control information of other terminals.
7. according to the method described in claim 6, wherein, blind decoding first controls information and comprises determining that with received with institute
The candidate of first control information bit of the highest correlation of signal is the first control information.
8. according to the method described in claim 7, wherein, the first control message part and the second control message part are to use
In high speed signaling control channel (HS-SCCH), and
Wherein, the candidate terminal identifier is radio network temporary identifier (RNTI).
9. according to the method described in claim 1, wherein, the detection and removal interference signal include:
The channelization codes and modulation index of the data channel of other terminals are applied to from the first control information inspection；And
Interference signal is removed from received signal based on the channelization codes and modulation index.
10. a kind of for obtaining the terminal of interference signal information in a wireless communication system, the terminal includes:
Transceiver is configured as sending signal to base station and from base station received signal；With
Controller is configured as controlling the first control message part for obtaining other terminals from reception signal and the second control
Message part processed generates multiple first control information candidates corresponding with the first control bit length of message part, is based on institute
Multiple first control information candidates are stated to carry out blind decoding to the first control information, and the based on blind decoding first control information
The interference signal of other terminals is detected and removed from received signal.
11. terminal according to claim 10, wherein the controller is further configured to control from second control
The second control of decoding information in message part processed.
12. terminal according to claim 11, wherein the first control message part is 8 bit longs, and
Wherein, the controller is further configured to generate 256 candidates of the first control information bit.
13. terminal according to claim 12, wherein the controller is further configured to based on the first control information
The candidate of bit and decoded second controls information to generate candidate cyclic redundancy check (CRC) information；And from generated
Candidate terminal identifier is obtained in candidate CRC information.
14. terminal according to claim 13, wherein the controller is further configured to control based on acquired
Candidate terminal identifier generates masking sequence, and control encodes the first control information bit based on the masking sequence
It is candidate.
15. terminal according to claim 14, wherein it is received based on institute that the controller is further configured to control
Signal and first controls the candidate coding result of information bit to determine the first control information of other terminals.
16. terminal according to claim 15, wherein the controller is further configured to control and determines have and institute
The candidate of first control information bit of the highest correlation of received signal is the first control information.
17. terminal according to claim 16, wherein the first control message part and the second control information portion
Point be for high speed signaling control channel (HS-SCCH), and
Wherein, the candidate terminal identifier is radio network temporary identifier (RNTI).
18. terminal according to claim 10, wherein the controller is further configured to control from first control
Information inspection processed is applied to the channelization codes and modulation index of the data channel of other terminals, and control is based on the channel
Change code and modulation index to remove interference signal from received signal.
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| US201361869260P | 2013-08-23 | 2013-08-23 | |
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| KR10-2014-0000537 | 2014-01-03 | ||
| KR1020140000537A KR102167856B1 (en) | 2013-08-23 | 2014-01-03 | Method and apparatus for detecting an interference signal control information in wireless communication system |
| PCT/KR2014/007892 WO2015026214A1 (en) | 2013-08-23 | 2014-08-25 | Interference signal control information acquisition method and apparatus for use in wireless communication system |
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| CN101682382A (en) * | 2007-06-19 | 2010-03-24 | 株式会社Ntt都科摩 | Base station device, user device, and method in mobile communication system |
| WO2013066935A1 (en) * | 2011-11-02 | 2013-05-10 | Qualcomm Incorporated | Blindly decoding interfering cell pdcch to acquire interfering cell pdsch transmission information |
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| US8687745B2 (en) | 2007-12-13 | 2014-04-01 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and apparatus for blind decoding |
| US9622228B2 (en) | 2009-05-04 | 2017-04-11 | Qualcomm Incorporated | Data and control multiplexing in wireless communications |
| US9106378B2 (en) | 2009-06-10 | 2015-08-11 | Qualcomm Incorporated | Systems, apparatus and methods for communicating downlink information |
| US8483215B2 (en) * | 2011-11-08 | 2013-07-09 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and apparatus for identifying other user equipment operating in a wireless communication network |
| EP3937570B1 (en) | 2011-12-22 | 2024-01-31 | InterDigital Patent Holdings, Inc. | Resource grant cancellation |
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| CN101682382A (en) * | 2007-06-19 | 2010-03-24 | 株式会社Ntt都科摩 | Base station device, user device, and method in mobile communication system |
| WO2013066935A1 (en) * | 2011-11-02 | 2013-05-10 | Qualcomm Incorporated | Blindly decoding interfering cell pdcch to acquire interfering cell pdsch transmission information |
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