CN101141179A - Method and device for implementing information transfer in wireless communication system - Google Patents

Method and device for implementing information transfer in wireless communication system Download PDF

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Publication number
CN101141179A
CN101141179A CNA2006101287907A CN200610128790A CN101141179A CN 101141179 A CN101141179 A CN 101141179A CN A2006101287907 A CNA2006101287907 A CN A2006101287907A CN 200610128790 A CN200610128790 A CN 200610128790A CN 101141179 A CN101141179 A CN 101141179A
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China
Prior art keywords
information
user
scrambling
ack
different
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CNA2006101287907A
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CN101141179B (en
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李斌
阮卫
夏林峰
杜颖钢
罗毅
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Yan June
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Huawei Technologies Co Ltd
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Priority to CN2006101287907A priority Critical patent/CN101141179B/en
Priority to PCT/CN2007/070652 priority patent/WO2008040209A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2626—Arrangements specific to the transmitter only
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • 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
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0014—Three-dimensional division
    • H04L5/0016—Time-frequency-code
    • H04L5/0021—Time-frequency-code in which codes are applied as a frequency-domain sequences, e.g. MC-CDMA

Abstract

The present invention relates to a method and a device to realize information transmission in wireless communication systems. The present invention mainly comprises steps below: In a communication system featuring coexistence of OFDMA and CDMA service channels in reverse channels, single bit information to be transmitted in a frontward control channel is extended and then scrambled by means of user information. Processed and acquired information sequence receives OFDM modulation and then is transmitted through an antenna. Therefore, the present invention realizes single bit information transmission in OFDM systems featuring coexistence of OFDMA and CDMA, such as F-ACK or F-PCB information, thus greatly reducing complexity of CDMA service control signaling and scheduling in AIE systems.

Description

Realization information is transmitted in wireless communication system method and device
Technical field
The present invention relates to wireless communication technology field, relate in particular to a kind of information is transmitted in wireless communication system implementation method and system.
Background technology
At present, 3GPP2 (3G (Third Generation) Moblie collaborative project group 2) has proposed AIE (AirInterface Evolution, AIE plan) technology.AIE has adopted new air interface technologies, for example, OFDM (Orthogonal Frequency Division Multiplexing, OFDM) and MIMO (Multiple Input Multiple Output, multiple-input and multiple-output) etc., and technology such as interference eliminated, so that increase substantially spectrum efficiency and data peaks speed, to satisfy the demand of radio communication.
In the AIE technology, adopted OFDMA (Orthogonal Frequency DivisionMultiplexing Access, OFDM) and the technology that combines of CDMA (code division multiple access), wherein, CDMA user and OFDMA user be frequency division multiplexing in whole transmission bandwidth, and the user adopts a yard branch mode to carry out multiplexing in CDMA takies frequency range.
The reverse transfer band of AIE technology is 5MHz, comprises 512 subcarriers altogether, and per 16 sub carrier group become a fundamental node; Whole 5MHz bandwidth is made up of 32 fundamental nodes altogether, the corresponding index of each fundamental node, from 0 to 31.In this technology, on whole transmission bandwidth, divide the information that a part of band resource is used for the transmission of CDMA user, described part bandwidth can be divided into one or more son sections, and each field bandwidth is 1.25MHz, and all the other available resources still adopt the OFDMA mode to transmit.
In the AIE technology, suppose to have only a son section user transmission of CDMA user's information, the then corresponding transmission bandwidth method of salary distribution is as shown in Figure 1.
Based on the above-mentioned transmission bandwidth method of salary distribution, the OFDMA data, and CDMA data and control information just can carry out follow-up transmission and handle after through the subcarrier mapping, goes out by antenna transmission.
At present, in the AIE forward channel, the transmission of replying of OFDMA user and power control information etc. is carried in support.Send on F-SCCH (forward direction is shared signaling channel) channel for user's F-ACK (forward direction is replied) information, F-PCB (forward power control) information, assignation information etc.Wherein, be example with the F-ACK channel that transmits F-ACK information, it is 32 information bit sequence that the F-ACK channel sends a string length, in 32 fundamental nodes of the feedback information of each information bit one.Information bit sequence is after ovennodulation, and each information bit forms 3 QPSK (quarternary phase-shift keying (QPSK)) symbol, finally produces a length and be 96 F-ACK information sequence.Described F-ACK information sequence is modulated on the different subcarriers, just can on each forward physical frame, transmits.
If an OFDM user has been assigned a plurality of fundamental node transmission data, the F-ACK bit that then can only use that minimum fundamental node correspondence of call number is as the response message to this user.
Yet, use identical fundamental node transmission data the CDMA user of same son section, because the F-ACK channel can't carry a plurality of F-ACK bit informations for certain fundamental node, and can only carry a F-ACK bit information for certain fundamental node.Therefore, present F-ACK channel can't carry response message for the CDMA user who uses fundamental node.For the F-PCB channel then by the same token, also exist and to carry power control information for the CDMA user who uses fundamental node.
From above-mentioned prior art as can be seen, the present transmission that in the AIE technical field, can't realize at CDMA user's single bit of information.Simultaneously, in other similar techniques fields, there is not similar techniques can be used to carry out the transmission of single bit of information such as above-mentioned F-ACK, F-PCB yet.
Summary of the invention
The purpose of this invention is to provide a kind of realization information is transmitted in wireless communication system method and device, thereby can be in wireless communication system, realize the transmission of CDMA user's single bit of information based on the OFDM technology, be convenient to realize effective control and management professional in the wireless communication system.
The objective of the invention is to be achieved through the following technical solutions:
The invention provides a kind of method that realization information is transmitted in wireless communication system, comprising:
There is the orthogonal frequency division multiplex OFDM communication system of cdma service channel at backward channel, single bit of information to be sent in the forward control channel is expanded and scrambling is handled, handle in the information sequence that obtains to comprise user profile;
Carry out the modulating in OFDM processing to handling the information sequence that obtains, and send by antenna.
Described expand and scrambling is handled and specifically to be comprised:
Described single bit of information is carried out extended operation, obtain corresponding a plurality of bits, afterwards, utilize user profile that described a plurality of bits are carried out scrambling again and handle, obtain this user's information sequence;
Perhaps,
Utilize user profile simultaneously described single bit of information to be expanded and the scrambling processing, obtain this user's information sequence;
Perhaps,
Adopt user-dependent orthogonal code and scrambler described single bit of information to be expanded and the scrambler processing, obtain this user's information sequence.
Among the present invention, described single bit of information is carried out extended operation specifically comprise: it is a plurality of bits that described single bit of information is utilized orthogonal code or direct repetitive extension.
The user-dependent orthogonal code of described employing and scrambler is expanded and scrambling is handled and specifically to be comprised:
Partial bit in the user profile is mapped to different orthogonal codes, the single bit of information of different user is carried out extended operation, obtain corresponding a plurality of bits; Afterwards, the remaining bits in the user profile is mapped to different scramblers, a plurality of bits of the described correspondence of different user is carried out scrambling handle, and, obtain this user's information sequence the information sequence addition after the different scrambling codes scrambling;
Perhaps,
Adopt the partial bit in the user profile to be mapped to different orthogonal codes, the single bit of information of different user is carried out extended operation, obtain corresponding a plurality of bits; Afterwards, adopt the remaining bits in the user profile to be mapped to different scramblers,, adopt described scrambler scrambling to handle after the addition described a plurality of bit additions of the different user that is mapped as identical scrambler, information sequence addition after the different scrambling codes scrambling obtains this user's information sequence.
Described orthogonal code includes but not limited to be Walsh sign indicating number or discrete Fourier transform DFT sign indicating number.
The described information sequence that processing is obtained carries out the OFDM modulation treatment and specifically comprises:
Described information sequence is mapped on the discrete channel resource DRCH or piece channel resource BRCH of OFDM OFDMA system, and carries out the OFDM modulation treatment.
Among the present invention, carry out described OFDM modulation treatment and also comprise before:
With a plurality of users' information sequence addition, and the information sequence of a plurality of users after the addition is carried out the information sequence of OFDM modulation treatment as needs.
Described user profile comprises: MACID (user's medium access control sign), or user's sequence number, or user's group number.
Described user's single bit of information comprises: user's the power control F-PCB information of replying F-ACK information and/or user.
Among the present invention,, then describedly expand and utilize user profile to carry out also comprising in the scrambling processing procedure difference F-ACK information and F-PCB information processing, specifically comprise if described user's single bit of information comprises F-ACK information and F-PCB information:
Described F-ACK information and F-PCB information is compound as I road signal and Q road signal respectively;
Perhaps,
Adopt different orthogonal codes to expand respectively with power control F-PCB information described F-ACK information;
Perhaps,
To expand the information sequence that obtains after the scrambling with power control F-PCB information by described F-ACK information and be mapped to different physical channel resources respectively.
Described method also comprises:
Classify according to channel quality or transmitted power to sent F-ACK that belongs to different mobile terminal and/or F-PCB, be divided into a plurality of groups;
Organize information to be sent adopts different transmitted powers to send at each.
The described processing that is divided into a plurality of groups specifically comprises:
F-ACK and/or the F-PCB that belongs to different mobile terminal sorted according to channel quality or transmitted power, and the information after the ordering is divided into groups in order;
Perhaps, classify, corresponding F-ACK and/or F-PCB are selected to be divided into different groups according to the different packet format PF of terminal under F-ACK and/or the F-PCB.
The processing that the different transmitted power of described employing sends comprises:
Each is organized the mode of information to be sent by orthogonal multiplex be mapped to physical channel resources, and adopt different transmitted powers to send processing.
The processing that the different transmitted power of described employing sends comprises:
With the information sequence addition after the scrambling of different user correspondence in each group, the result after the addition is multiplied by the power gain factor of each group, the mode by orthogonal multiplex is mapped to physical channel resources, and sends.
The mode of described orthogonal multiplex comprises: frequency division multiplexing, time division multiplexing or time-frequency hybrid multiplex.
The invention provides a kind of device that realization information is transmitted in wireless communication system, be applied to the ofdm communication system that there is the cdma service channel in backward channel, comprising:
Single bit of information expansion scrambling processing unit is used for expanding and utilizing user profile to carry out scrambling and handle to sent user's single bit of information;
Information sends processing unit, is used for the information sequence that single bit of information expansion scrambling processing unit obtains is carried out the OFDM modulation treatment, and sends by antenna.
Described single bit of information expansion scrambling processing unit specifically comprises: extension process unit and scrambling processing unit, perhaps, scrambling extension process unit, wherein:
The extension process unit is used for single bit of information is carried out extended operation, obtains corresponding a plurality of bit;
Scrambling processing unit, a plurality of bits that utilize user profile that the extension process unit is obtained carry out scrambling to be handled, and obtains this user's information sequence;
Perhaps,
Scrambling extension process unit is used to utilize the scrambler of user profile single bit of information to be expanded and the scrambling processing, obtains this user's information sequence.
Described information sends processing unit and comprises:
The mapping processing unit is mapped to described information sequence on the discrete channel resource or piece channel resource of OFDM OFDMA system;
Modulation sends processing unit, is used for described information sequence is carried out the OFDM modulation treatment, and is transferred to antenna, passes through antenna transmission.
Described information sends processing unit and also comprises multi-user's processing unit, is used for the information sequence addition with a plurality of users, and a plurality of users' of obtaining after the addition information sequence is passed to modulation sends processing unit.
Described user profile comprises: user's medium access control sign MACID, or user's sequence number, or user's group number;
Described user's single bit of information comprises: user's the power control F-PCB information of replying F-ACK information and/or user.
As seen from the above technical solution provided by the invention, the present invention mainly is a channel of having expanded original transmission single bit of information, as F-ACK channel, F-PCB channel etc., makes this channel both can support the OFDM business, can support cdma service again.
And, adopt the relevant orthogonal code of MACID among the present invention or/and scrambler expansion and scrambling send corresponding single bit of information, make receiving terminal (as portable terminal) as long as by distributing to the MACID information of oneself, can determine scrambler and extended code, thereby demodulate the single bit of information of this terminal correspondence, as F-ACK information and/or F-PCB information.
Therefore, realization of the present invention can significantly reduce the control signaling and the scheduling complexity of the cdma service of AIE system.
Description of drawings
Fig. 1 is the schematic diagram of the transmission bandwidth method of salary distribution in the prior art;
Fig. 2 is the specific implementation structural representation of device of the present invention;
Fig. 3 is the specific implementation structural representation of embodiment one among the present invention;
Fig. 4 is the specific implementation structural representation of embodiment two among the present invention;
Fig. 5 is the specific implementation structural representation of embodiment three among the present invention;
Fig. 6 is the specific implementation structural representation one of embodiment four among the present invention;
Fig. 7 is the specific implementation structural representation two of embodiment four among the present invention;
Fig. 8 is the specific implementation structural representation of embodiment five among the present invention;
Fig. 9 is the specific implementation structural representation of embodiment six among the present invention;
Figure 10 is the specific implementation structural representation of embodiment seven among the present invention;
Figure 11 is the specific implementation structural representation of embodiment eight among the present invention.
Embodiment
The present invention mainly is by expanding the channel of present transmission single bit of information, make in the network of OFDM transmission technology, and the channel after the expansion can carry out the transmission of user's single bit of information.
For example, the present invention makes that by expansion present F-ACK channel and F-PCB channel the F-ACK channel after the expansion can think that OFDMA user transmits response message, simultaneously, also can transmit response message for the user; Equally, the F-PCB channel after the expansion can think that OFDMA user provides power control information, simultaneously, also can provide power control information for the user
To be example with the F-ACK and/or the F-PCB information of transmission user below, specific implementation of the present invention will be elaborated.
The invention provides a kind of improvement implementation that is applicable to the forward control channel of cdma service channel under the wireless mobile communications ofdm system, this control channel comprises: F-ACK (forward direction is replied), F-PCB (forward power control) information.
Improve in the implementation at this, every road user's F-ACK bit at first carries out the on-off keying modulation, produces the F-ACK symbol, wherein "+1 " expression affirmative acknowledgement, and vacancy is represented negative response; Every road user's F-PCB bit at first carries out the BPSK modulation, and wherein "+1 " expression adds power, and " 1 " expression subtracts power.
After determining corresponding F-ACK symbol and/or F-PCB symbol, network side (as the base station) is F-ACK bit to be sent and/or F-PCB bit, by orthogonal code or directly the mode of repetitive extension be the information of N bit with the F-ACK or the F-PCB information translation of single-bit; For the information code sequence that the expansion back obtains, adopt the relevant scrambler of MACID that it is carried out scrambling and handle, to obtain the information sequence (being symbol sebolic addressing) of different user; Afterwards, sequence addition with different user, and be mapped to OFDMA (Orthogonal Frequency Division Multiplexing Access, OFDM) DRCH of system (distributed resource channel, discrete channel resource) or on BRCH (blockresource channel, the piece channel resource) channel; At last, will go out by antenna transmission by the information sequence process OFDM modulation treatment of described single bit of information acquisition.Wherein, described orthogonal code comprises the Walsh sign indicating number, DFT (discrete Fourier transform) sign indicating number etc.
In the implementation provided by the invention, same user's the F-ACK information bit and the transmission processing mode of F-PCB bit specifically can select following any:
(1) can be after expansion the time be mapped as mutually orthogonal sign indicating number sequence, addition is together multiplexing;
(2) after expansion, be mapped to I road and Q road respectively, addition is together multiplexing.
(3) after scrambling, be mapped on the different OFDM physical channel resources pieces together multiplexing.
And in the implementation provided by the invention, the scrambler that described MACID is relevant can produce for all bits by MACID, also can produce for the partial bit by MACID.
The same channel (as F-ACK channel or F-PCB channel) of the different user of corresponding different MACID can perhaps, also can be expanded by different orthogonal codes by identical sign indicating number expansion.The same channel of different user can be divided into two groups, sends by I road and Q road respectively.
The specific implementation structure of the device that realization information is transmitted in wireless communication system of the present invention mainly comprises following processing unit as shown in Figure 2:
(1) single bit of information expansion scrambling processing unit is used for expanding and utilizing user profile to carry out scrambling and handle to sent user's single bit of information;
Described user profile comprises: user's medium access control sign MACID;
Described user's single bit of information comprises: user's the F-PCB information of replying F-ACK information and/or user.
User described in the present invention can be CDMA user, perhaps, also can be OFDMA user.
In this device, described single bit of information expansion scrambling processing unit specifically can adopt different implementations, for example, specifically can comprise extension process unit and scrambling processing unit, perhaps, only comprise scrambling extension process unit, the specific implementation structure of each unit is as follows:
The extension process unit is used for single bit of information is carried out extended operation, obtains corresponding a plurality of bit;
Scrambling processing unit, a plurality of bits that utilize user profile that the extension process unit is obtained carry out scrambling to be handled, and obtains this user's information sequence, as the information sequence of F-ACK information correspondence, perhaps, the information sequence of F-PCB information correspondence, perhaps, the information sequence of F-ACK and F-PCB information correspondence;
Scrambling extension process unit, be used to utilize the scrambler of user profile single bit of information to be expanded and the scrambling processing, promptly can directly utilize user's MACID directly single bit of information to be carried out the scrambling processing, realize extended operation simultaneously, thereby can obtain this user's information sequence, as the information sequence of F-ACK information correspondence at single bit of information, perhaps, the information sequence of F-PCB information correspondence, perhaps, the information sequence of F-ACK and F-PCB information correspondence.
(2) information sends processing unit, is used for the information sequence that single bit of information expansion scrambling processing unit obtains is carried out the OFDM modulation treatment, and sends by antenna;
In this device, described information sends processing unit and specifically can comprise:
The mapping processing unit is mapped to described information sequence on the physical channel of OFDMA system, as discrete channel resource or piece channel resource etc.;
Modulation sends processing unit, is used for described information sequence is carried out the OFDM modulation treatment, and is transferred to antenna, passes through antenna transmission;
Need to prove that described information sends processing unit can also comprise multi-user's processing unit, is used for the information sequence addition with a plurality of users, and a plurality of users' of obtaining after the addition information sequence is passed to modulation send processing unit; Being arranged so that of this unit can be carried out the transmission of a plurality of users' single bit of information simultaneously, as the transmission of F-ACK or F-PCB information.
Below in conjunction with accompanying drawing several specific embodiments provided by the invention are elaborated.
Embodiment one
The specific implementation of this embodiment as shown in Figure 3, corresponding processing procedure comprises:
After determining F-ACK information and F-PCB information to be passed, described F-ACK information bit by Walsh code1 (Walsh sign indicating number 1) expansion, is expanded described F-PCB information bit by Walshcode2 (Walsh sign indicating number 2).Wherein, the expression dot product that multiplies each other among the figure is used for Walsh sign indicating number and corresponding information are carried out the dot product operation.
After the information bit sequence after two expansions of dot product processing acquisition, information bit sequence after described two expansions is carried out addition by SUM (summation) unit, to the result after the addition by MACID (i.e. scrambling code SC1...n among the figure, wherein, SC (scrambling code, scrambler)) Xiang Guan scrambler carries out scrambling operation, and the user of different MACID can use different scrambler scramblings, promptly adopts whole bits of MACID to produce scramblers.
All users' that obtain after the scrambling information sequence carries out addition again to be handled, and the information sequence after the addition will be mapped on the interior physical channel resources (as DRCH or BRCH) of a physical frame.
At last, after each the OFDM symbol process OFDM modulation in the physical frame, obtain time-domain signal, and go out by antenna transmission.
Embodiment two
The specific implementation structure of this embodiment as shown in Figure 4, corresponding processing procedure comprises:
F-ACK channel and F-PCB channel are expanded by extended code, promptly F-ACK and F-PCB information are carried out extension process, be specially and adopt identical Walsh sign indicating number to carry out corresponding dot product extension process operation;
F-ACK after the expansion is in the same place as I road signal and Q road signal compound (promptly carrying out addition by the SUM unit handles) respectively with F-PCB information;
Utilize the scrambler of user's MACID that the signal after compound is carried out the scrambling processing, and the information after a plurality of user's scramblings is carried out addition handle;
Signal to the F-ACK that comprises a plurality of users that obtains after the addition and F-PCB information carries out the channel resource mapping, processing such as OFDM modulation, and concrete mapping and modulation treatment mode are identical with processing mode among Fig. 3; To go out by antenna transmission through the signal after mapping and the modulation treatment.
In this embodiment, the extended code of F-ACK channel and F-PCB channel can be identical, also can be inequality.The extended code of F-ACK channel and F-PCB channel can be an orthogonal code, random code or any sign indicating number.
Embodiment three
The specific implementation structure of this embodiment as shown in Figure 5, corresponding processing procedure comprises:
F-ACK information bit and F-PCB information bit are obtained to comprise together the information sequence of F-ACK and F-PCB information respectively as I road signal and Q road signal compound (being addition);
By the relevant scrambler of MACID information sequence is expanded again;
Information sequence after the expansion of each user's correspondence is carried out addition to be handled;
Information sequence after the addition is carried out channel resource mapping, be mapped on the physical channel, and after carrying out the OFDM modulation and waiting processing, by corresponding F-ACK of antenna transmission and F-PCB information.
Embodiment four
In this embodiment, specifically describe the processing implementation that respectively user's F-ACK information or F-PCB information is transmitted, as shown in Figure 6 and Figure 7.
In Fig. 6, specifically be to use scheme provided by the invention to transmit to the F-ACK information bit separately, the respective handling process comprises:
Adopt the Walsh sign indicating number to carry out extension process the F-ACK information bit, obtain a plurality of bit informations;
Afterwards, adopt the corresponding scrambler of MACID to carry out scrambling to described a plurality of bit informations and handle, so that receiving terminal can be determined the reception user of F-ACK information correspondence;
Information sequence to each user after handling through scrambling carries out the addition processing successively, is mapped to the processing of physical channel, and the OFDM modulation treatment, and by the described information sequence that comprises F-ACK information of antenna transmission.
In Fig. 7, specifically be to use scheme provided by the invention to transmit to the F-PCB information bit separately, corresponding processing procedure comprises:
Adopt the Walsh sign indicating number to carry out extension process the F-PCB information bit, obtain a plurality of bit informations;
Afterwards, adopt the corresponding scrambler of MACID to carry out scrambling to described a plurality of bit informations and handle, so that receiving terminal can be determined the reception user of F-PCB information correspondence;
Information sequence to each user after handling through scrambling carries out the addition processing successively, is mapped to the processing of physical channel, and the OFDM modulation treatment, and by the described information sequence that comprises F-PCB information of antenna transmission.
Embodiment five
In this embodiment, as shown in Figure 8, corresponding processing procedure comprises:
At first, respectively F-ACK information bit and F-PCB information bit are expanded, and after the scrambling processing, obtained each self-corresponding information sequence, i.e. F-ACK information sequence and F-PCB information sequence;
Corresponding a plurality of users' F-ACK information sequence is carried out the addition processing, and also the F-PCB information sequence with corresponding a plurality of users carries out the addition processing;
Afterwards, F-PCB information sequence and F-ACK information sequence after the addition processing are shone upon processing respectively, on the different physical channel resources pieces that are mapped to;
At last, the information sequence that comprises F-PCB information and F-ACK information after will shining upon again is multiplexing in same physical frame, after the OFDM modulation, goes out by antenna transmission.
Embodiment six
In this embodiment, scrambler can produce by the partial bit of MACID, at this moment, the expansion Walsh sign indicating number of same channel (F-ACK channel or F-PCB channel) may be different, and for example, the bit number of MACID is 9 bits, the available Walsh sign indicating number number in expansion back is 128, promptly 2 7Like this, just can adopt low 7 of MACID to be mapped as different Walsh sign indicating numbers, promptly low 7 the different users of MACID are by different Walsh sign indicating number expansions.Remaining two bits produce different scramblers among the MACID, and promptly high 2 different users pass through the different scrambling codes scrambling among the MACID.
With above-mentioned example is example, the concrete enforcement structure of this embodiment as shown in Figure 9, concrete processing procedure comprises following process:
At first, each F-ACK information is divided into four groups, adopt 7 Walsh sign indicating numbers to carry out extension process respectively to each F-ACK information in every group, and the F-ACK information sequence in each group after will expanding carry out addition, the corresponding F-ACK information sequence of each group after the acquisition addition;
Afterwards, the F-ACK information sequence that each group is corresponding adopts scrambler to carry out scrambling respectively and handles, the information sequence after the acquisition scrambling;
At last, the information sequence after the scrambling is carried out addition, obtain one road symbol, and processing backs such as this road symbol shines upon are sent.
With reference to shown in Figure 9, similar for the transmission processing procedure of F-PCB information with it, so no longer describe in detail.
Embodiment seven
In this embodiment, F-ACK can distinguish by different Walsh sign indicating numbers with F-PCB, perhaps also can distinguish by different scramblers, perhaps also can pass through I respectively, and the Q road sends.For example, distinguishing by the Walsh sign indicating number, can be that the Walsh sign indicating number of odd and even number is distributed to F-ACK and F-PCB respectively with Walsh sign indicating number index.
If distinguish by scrambler, then need for the scrambler of F-PCB scrambling different with scrambler for the F-ACK scrambling; Concrete adopt specific implementation structure that scrambler distinguishes as shown in figure 10, corresponding processing procedure specifically comprises:
At first, adopt the scrambler of user profile correspondence to carry out the scrambling extension process respectively F-ACK information and F-PCB information, and respectively with the multiline message sequence addition after the expansion of F-ACK information, the multiline message sequence addition after the expansion of F-PCB information;
Afterwards, the information sequence that obtains after the road addition with F-ACK information correspondence adopts first scrambler to carry out scrambling and handles, the information sequence that obtains after the road addition with F-PCB information correspondence adopts second scrambler to carry out scrambling and handles, and with the addition once more of the information sequence after two scramblings;
At last, the information sequence that obtains after the addition is shone upon etc. and to handle and to send.
Embodiment eight
The present invention according to the efficiency of transmission requirement of F-ACK and/or F-PCBB, need carry out transmission power control to the transmission of F-ACK/F-PCB in the specific implementation process, corresponding concrete controlling schemes comprises:
At first, carry out classifying according to channel quality to sent F-ACK that belongs to different mobile terminal and/or F-PCB in the base station; The respective classified mode can for: F-ACK and/or the F-PCB that belongs to different mobile terminal sorted according to channel quality, and to the ordering after information divide into groups in order, F-ACK to be sent and/or F-PCB number that each group comprises can be basic identical, also can be different;
Corresponding group technology also can for: by reverse traffic channel 3 kinds of PF (Packet Format are arranged, packet format), the channel quality that PF representative itself is different, big PF means good channel quality, little PF means poor channel quality, therefore, can classify according to the different PF of terminal under F-ACK and/or the F-PCB.Promptly corresponding F-ACK and/or F-PCB are selected to be divided into different groups according to PF.
Afterwards, organize information to be sent at each and adopt different transmitted powers to send processing, concrete transmission processing mode can adopt any one among above each embodiment; But the physical channel resources that each group is shone upon is inequality, specifically can be undertaken multiplexing by methods such as frequency division multiplexing, time division multiplexing or time-frequency hybrid multiplexs; For example, F-ACK and/or F-PCB take the physical channel resources of a fundamental node, but F-ACK/F-PCB is divided into two groups, at this moment, just the physical channel resources of half base node can be distributed to wherein one group, the physical channel resources of remaining half base node is distributed to another group;
If transmitting terminal is the grouping of carrying out according to PF, then also need in different groups, to go corresponding F-ACK of demodulation and/or F-PCB information according to the PF information of receiving at receiving terminal.
So that F-ACK information is treated to example, in the respective embodiments eight, the implementation structure that F-ACK information transmits as shown in figure 11, concrete processing procedure comprises:
At first, 4 group codes after the division of F-ACK information are carried out scrambling and extension process respectively, and wherein the F-ACK1 group comprises K1 F-ACK information, and the F-ACK2 group comprises K2 F-ACK information, the F-ACK3 group comprises K3 F-ACK information, and the F-ACK4 group comprises K4 F-ACK information;
Afterwards, the information sequence after every group the scrambling expansion is distinguished addition, and the power demand that the information sequence after the addition transmits is as required carried out the power adjustment, specifically carry out power adjustment control by introducing the power capture signal;
At last, each group is carried out multiplexing operation through the adjusted information sequence of power, mapping processing etc., and by the corresponding F-ACK information of antenna transmission.
In sum, the present invention has expanded original F-ACK channel and F-PCB channel, makes this channel both can support the OFDM business, can support cdma service again.And adopt the relevant orthogonal code of MACID or/and scrambler expansion and scrambling send these information bits.Make receiving terminal (portable terminal) as long as by distributing to the MACID information of oneself, can determine scrambler and extended code, thereby the F-ACK information that demodulates this terminal correspondence is or/and F-PCB information, thereby can significantly reduce the control signaling and the scheduling complexity of cdma service.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.

Claims (20)

1. the method that realization information is transmitted in wireless communication system is characterized in that, comprising:
There is the orthogonal frequency division multiplex OFDM communication system of cdma service channel at backward channel, single bit of information to be sent in the forward control channel is expanded and scrambling is handled, handle in the information sequence that obtains to comprise user profile;
Carry out the modulating in OFDM processing to handling the information sequence that obtains, and send by antenna.
2. method according to claim 1 is characterized in that, described expand and scrambling is handled and specifically to be comprised:
Described single bit of information is carried out extended operation, obtain corresponding a plurality of bits, afterwards, utilize user profile that described a plurality of bits are carried out scrambling again and handle, obtain this user's information sequence;
Perhaps,
Utilize user profile simultaneously described single bit of information to be expanded and the scrambling processing, obtain this user's information sequence;
Perhaps,
Adopt user-dependent orthogonal code and scrambler described single bit of information to be expanded and the scrambler processing, obtain this user's information sequence.
3. method according to claim 2 is characterized in that, described single bit of information is carried out extended operation specifically comprise:
It is a plurality of bits that described single bit of information is utilized orthogonal code or direct repetitive extension.
4., method according to claim 2 is characterized in that, the user-dependent orthogonal code of described employing and scrambler is expanded and scrambling is handled and specifically to be comprised:
Partial bit in the user profile is mapped to different orthogonal codes, the single bit of information of different user is carried out extended operation, obtain corresponding a plurality of bits; Afterwards, the remaining bits in the user profile is mapped to different scramblers, a plurality of bits of the described correspondence of different user is carried out scrambling handle, and, obtain this user's information sequence the information sequence addition after the different scrambling codes scrambling;
Perhaps,
Adopt the partial bit in the user profile to be mapped to different orthogonal codes, the single bit of information of different user is carried out extended operation, obtain corresponding a plurality of bits; Afterwards, adopt the remaining bits in the user profile to be mapped to different scramblers,, adopt described scrambler scrambling to handle after the addition described a plurality of bit additions of the different user that is mapped as identical scrambler, information sequence addition after the different scrambling codes scrambling obtains this user's information sequence.
5. according to claim 2,3 or 4 described methods, it is characterized in that described orthogonal code comprises Walsh sign indicating number or discrete Fourier transform DFT sign indicating number.
6. method according to claim 1 is characterized in that, the described information sequence that processing is obtained carries out the OFDM modulation treatment and specifically comprises:
Described information sequence is mapped on the discrete channel resource DRCH or piece channel resource BRCH of OFDM OFDMA system, and carries out the OFDM modulation treatment.
7. method according to claim 1 is characterized in that, carries out described OFDM modulation treatment and also comprises before:
With a plurality of users' information sequence addition, and the information sequence of a plurality of users after the addition is carried out the information sequence of OFDM modulation treatment as needs.
8. according to claim 1,2,3,4,6 or 7 described methods, it is characterized in that described user profile comprises:
User's medium access control sign MACID, or user's sequence number, or user's group number.
9. according to claim 1,2,3,4,6 or 7 described methods, it is characterized in that described user's single bit of information comprises:
User's the power control F-PCB information of replying F-ACK information and/or user.
10. method according to claim 9, it is characterized in that, if described user's single bit of information comprises F-ACK information and F-PCB information, then describedly expand and utilize user profile to carry out also comprising in the scrambling processing procedure difference F-ACK information and F-PCB information processing, specifically comprise:
Described F-ACK information and F-PCB information is compound as 1 road signal and Q road signal respectively;
Perhaps,
Adopt different orthogonal codes to expand respectively with power control F-PCB information described F-ACK information;
Perhaps,
To expand the information sequence that obtains after the scrambling with power control F-PCB information by described F-ACK information and be mapped to different physical channel resources respectively.
11. method according to claim 9 is characterized in that, described method also comprises:
Classify according to channel quality or transmitted power to sent F-ACK that belongs to different mobile terminal and/or F-PCB, be divided into a plurality of groups;
Organize information to be sent adopts different transmitted powers to send at each.
12. method according to claim 11 is characterized in that, the described processing that is divided into a plurality of groups specifically comprises:
F-ACK and/or the F-PCB that belongs to different mobile terminal sorted according to channel quality or transmitted power, and the information after the ordering is divided into groups in order;
Perhaps, classify, corresponding F-ACK and/or F-PCB are selected to be divided into different groups according to the different packet format PF of terminal under F-ACK and/or the F-PCB.
13. method according to claim 11 is characterized in that, the processing that the different transmitted power of described employing sends comprises:
Each is organized the mode of information to be sent by orthogonal multiplex be mapped to physical channel resources, and adopt different transmitted powers to send processing.
14. method according to claim 11 is characterized in that, the processing that the different transmitted power of described employing sends comprises:
With the information sequence addition after the scrambling of different user correspondence in each group, the result after the addition is multiplied by the power gain factor of each group, the mode by orthogonal multiplex is mapped to physical channel resources, and sends.
15. method according to claim 14 is characterized in that, the mode of described orthogonal multiplex comprises: frequency division multiplexing, time division multiplexing or time-frequency hybrid multiplex.
16. the device that realization information is transmitted in wireless communication system is applied to the ofdm communication system that there is the cdma service channel in backward channel, it is characterized in that, comprising:
Single bit of information expansion scrambling processing unit is used for expanding and utilizing user profile to carry out scrambling and handle to sent user's single bit of information;
Information sends processing unit, is used for the information sequence that single bit of information expansion scrambling processing unit obtains is carried out the OFDM modulation treatment, and sends by antenna.
17. device according to claim 16 is characterized in that, described single bit of information expansion scrambling processing unit specifically comprises: extension process unit and scrambling processing unit, perhaps, scrambling extension process unit, wherein:
The extension process unit is used for single bit of information is carried out extended operation, obtains corresponding a plurality of bit;
Scrambling processing unit, a plurality of bits that utilize user profile that the extension process unit is obtained carry out scrambling to be handled, and obtains this user's information sequence;
Perhaps,
Scrambling extension process unit is used to utilize the scrambler of user profile single bit of information to be expanded and the scrambling processing, obtains this user's information sequence.
18. device according to claim 16 is characterized in that, described information sends processing unit and comprises:
The mapping processing unit is mapped to described information sequence on the discrete channel resource or piece channel resource of OFDM OFDMA system;
Modulation sends processing unit, is used for described information sequence is carried out the OFDM modulation treatment, and is transferred to antenna, passes through antenna transmission.
19. device according to claim 18, it is characterized in that, described information sends processing unit and also comprises multi-user's processing unit, is used for the information sequence addition with a plurality of users, and a plurality of users' of obtaining after the addition information sequence is passed to modulation sends processing unit.
20. according to claim 16,17,18 or 19 described devices, it is characterized in that,
Described user profile comprises: user's medium access control sign MACID, or user's sequence number, or user's group number;
Described user's single bit of information comprises: user's the power control F-PCB information of replying F-ACK information and/or user.
CN2006101287907A 2006-09-08 2006-09-08 Method and device for implementing information transfer in wireless communication system Expired - Fee Related CN101141179B (en)

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CN105207745A (en) * 2015-08-31 2015-12-30 清华大学 Multi-user coding modulation transmission method of multi-access channel

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ATE255788T1 (en) * 1999-06-28 2003-12-15 Ericsson Inc TRANSMISSION SYSTEM AND METHOD FOR ORTHOGONAL MULTI CARRIER CODING
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KR100416640B1 (en) * 2001-05-26 2004-02-05 학교법인대우학원 OFDM-CDMA Transmission Method Using Orthogonal Code Multiplexing and Its Transmitter and Receiver
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CN101562588B (en) * 2008-04-18 2012-05-30 财团法人工业技术研究院 Wireless signal transmitting method and transmitter
CN105207745A (en) * 2015-08-31 2015-12-30 清华大学 Multi-user coding modulation transmission method of multi-access channel

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