WO2008040209A1

WO2008040209A1 - Method and device for realizing information transfer in wireless communication system

Info

Publication number: WO2008040209A1
Application number: PCT/CN2007/070652
Authority: WO
Inventors: Bin Li; Wei Ruan; Linfeng Xia; Yinggang Du; Yi Luo
Original assignee: Huawei Technologies Co., Ltd.
Priority date: 2006-09-08
Filing date: 2007-09-07
Publication date: 2008-04-10
Also published as: CN101141179A; CN101141179B

Abstract

A method for realizing information transfer in a wireless communication system, comprises: in an OFDM communication system which exists both OFDMA and CDMA service channels in the reverse channels simultaneously, the single-bit information waiting to be sent in the forward control channel is spreaded, and scrambled with user information; and then the information sequence obtained after the spreading and scrambling processing is performed an OFDM modulation processing, and then the modulated information is transmitted through the antenna. Also a device for realizing information transfer in a wireless communication system is provided.

Description

Method and device for realizing information transmission in wireless communication system

[1] Technical field

[2] The present invention relates to the field of wireless communication technologies, and in particular, to a method and system for implementing information transmission in a wireless communication system.

[3] Background of the invention

[4] Currently, 3GPP2 (3rd Generation Mobile Communications Cooperation Project Team 2) proposes AIE (Air Interface)

Evolution, Air Interface Evolution Program) Technology. AIE uses new air interface technology, for example, OF DM (Orthogonal Frequency Division)

Multiplexing, Orthogonal Frequency Division Multiplexing) and MIMO (Multiple Input Multiple)

Output, multiple input multiple output, etc., as well as interference cancellation techniques, to greatly improve spectral efficiency and data peak rate to meet the needs of wireless communications.

[5] In AIE technology, OFDMA (Orthogonal Frequency Division Multiplexing)

Access, Orthogonal Frequency Division Multiple Access) and CDMA (Code Division Multiple Access), in which CDMA users and OFDMA users are frequency-multiplexed in the entire transmission bandwidth, and users use the code division method in the CDMA occupied frequency band. Reuse.

[6] The reverse transmission band of AIE technology is 5MHz, which includes a total of 512 subcarriers, and each 16 subcarriers form a basic node; the entire 5MHz bandwidth is composed of 32 basic nodes, each basic node corresponds to an index, from 0 to 31. In this technique, a part of frequency band resources are allocated for transmitting information of a CD MA user over the entire transmission bandwidth, and the part of the bandwidth may be divided into one or more sub-segments, each field having a bandwidth of 1.25 MHz, and the remaining available resources are still used. OFDMA mode transmission.

[7] In the AIE technology, assuming that only one sub-segment user transmits information of a CDMA user, the corresponding transmission bandwidth allocation manner is as shown in FIG.

[8] Based on the above-mentioned transmission bandwidth allocation method, the OFDMA data, as well as the CDMA data and control information, after being mapped by the subcarriers, can be subjected to subsequent transmission processing and transmitted through the antenna.

[9] Currently, in the AIE forward channel, the transmission of the response and power control information of the OFDMA user is supported. For user F-ACK (forward response) information, F-PCB (forward power control) information, refers to The allocation information and the like are transmitted on the F-SCCH (Forward Shared Signaling Channel) channel. For example, the F-ACK channel that transmits the F-ACK information is used as an example. The F-ACK channel transmits a sequence of information bit sequences of length 32, and the information of each information bit is fed back to one of the 32 basic nodes. After the information bit sequence is modulated, each information bit forms three QPSK (Quadrature Phase Shift Keying) symbols, which ultimately produces a sequence of F-ACK information of length 96. The F-ACK information sequence is modulated onto different subcarriers and transmitted on each forward physical frame.

[10] If an OFDM user is assigned multiple base nodes to transmit data, then only the F-ACK bit corresponding to the lowest base node of the number of the chops I can be used as the response information to the user.

[11] However, if CDMA users in the same sub-section use the same basic node to transmit data, the F-ACK channel cannot carry multiple F-ACK bit information for a certain basic node, but can only be carried by a certain basic node. One F-ACK bit information. Therefore, the current F-ACK channel cannot carry the response information for the CDM A user using the basic node. For the same reason, for F-PCB channels, there is also no way to carry power control information for CDMA users using the basic node.

[12] As can be seen from the above prior art, the transfer of single bit information for CDMA users is currently not possible in the AIE technology field. Similarly, similar techniques are not available in other similar technical fields for the transmission of single-bit information such as F-ACK and F-PCB described above.

[13] Summary of the invention

[14] An object of the embodiments of the present invention is to provide a method and apparatus for implementing information transmission in a wireless communication system, so that CDMA technology can be used to implement single-bit information transmission in a wireless communication system, which is convenient for realizing Effective control management of services in wireless communication systems.

[15] The purpose of the embodiment of the present invention is achieved by the following technical solutions:

[16] An embodiment of the present invention provides a method for implementing information transmission in a wireless communication system, including: [17] an Orthogonal Frequency Division Multiplexing (OFDM) OFDM communication system having a CDMA traffic channel in a reverse channel, for forward control The single-bit information to be transmitted in the channel is extended and scrambled, and the obtained information sequence includes user information, and the extension is information that expands the single-bit information into multiple bits;

[18] The information sequence obtained by the processing is subjected to orthogonal frequency division multiplexing (OFDM) modulation processing and transmitted through an antenna.

An embodiment of the present invention provides an apparatus for implementing information transmission in a wireless communication system, including: [20] a single-bit information spread scrambling processing unit, in an OFDM communication system in which a CDMA traffic channel exists in a reverse channel, a single-bit information for a user to be transmitted is extended and a scrambling process is performed using the user information, An extension is information that expands single-bit information into multiple bits;

[21] The information transmission processing unit is configured to perform the information sequence obtained by the single-bit information expansion scrambling processing unit

The OFDM modulation process is performed and transmitted through an antenna.

[22] It can be seen from the technical solution provided by the present invention that the present invention mainly expands the original channel for transmitting single-bit information, so that the channel can support both OFDM service and CDMA service, thereby greatly reducing the AIE system. Control signaling and scheduling complexity of CDMA services.

[23] BRIEF DESCRIPTION OF THE DRAWINGS

[24] FIG. 1 is a schematic diagram of a transmission bandwidth allocation manner in the prior art;

2 is a schematic structural diagram of a specific implementation of the device according to the present invention;

[26] FIG. 3 is a schematic structural diagram of a specific implementation of Embodiment 1 of the present invention;

4 is a schematic structural diagram of a specific implementation of Embodiment 2 of the present invention;

[28] FIG. 5 is a schematic structural diagram of a specific implementation of Embodiment 3 of the present invention;

Figure 6 is a schematic structural view 1 of a specific implementation structure of Embodiment 4 of the present invention;

[30] FIG. 7 is a second schematic diagram of a specific implementation structure of Embodiment 4 of the present invention;

FIG. 8 is a schematic structural diagram of a specific implementation of Embodiment 5 of the present invention; FIG.

FIG. 9 is a schematic structural diagram of a specific implementation of Embodiment 6 of the present invention; FIG.

FIG. 10 is a schematic structural diagram of a specific implementation of Embodiment 7 of the present invention; FIG.

FIG. 11 is a schematic structural diagram of a specific implementation of Embodiment 8 of the present invention.

[35] Mode for carrying out the invention

[36] The implementation scheme for implementing information transmission in a wireless communication system provided by the embodiment of the present invention specifically includes: an Orthogonal Frequency Division Multiplexing OFDM communication system in which a CDMA traffic channel exists in a reverse channel, in a forward control channel. The single-bit information to be transmitted is expanded and scrambled, and the obtained information sequence includes user information, and the extension is to expand the single-bit information into a plurality of bits of information; and then, the information sequence obtained by the processing is positive. Performing frequency division multiplexing OFDM modulation processing, and transmitting through an antenna, for example, mapping the information sequence to a discrete resource channel DRCH or a block resource channel BRCH of an orthogonal frequency division multiple access OFDMA system, and performing OFDM modulation processing , and then send processing through the antenna. Optional Further, before performing the OFDM modulation process, the method further includes: adding the information sequences of the plurality of users, and using the added information sequence of the plurality of users as the information sequence requiring OFDM modulation processing.

[37] In the above processing, the corresponding expansion and scrambling processing may be any one of the following ways: [38] (1) performing an extended operation on the single-bit information (such as using the single-bit information Transmitting or directly repeating to a plurality of bits), obtaining a corresponding plurality of bits, and then scrambling the plurality of bits by using user information to obtain a sequence of information of the user;

[39] (2) expanding and scrambling the single-bit information by using user information to obtain a sequence of information of the user;

[40] (3) Extending and scrambling the single-bit information with user-related orthogonal codes and scrambling codes

Obtaining a sequence of information of the user; for example, mapping part of bits in the user information into different orthogonal codes (for example, may be Walsh codes or discrete Fourier transform DFT codes, etc.), and using the orthogonal code pairs to different The user's single-bit information is extended to obtain corresponding multiple bits; the remaining bits in the user information are also mapped into different scrambling codes, and the corresponding multiple bits of different users are scrambled and different The information sequence scrambled by the scrambling code is added to obtain the information sequence of the user; or, the partial bits in the user information are mapped into different orthogonal codes, and the single bit information of different users is used by using the orthogonal codes. Performing an expansion operation to obtain a corresponding plurality of bits; further mapping the remaining bits in the user information into different scrambling codes, adding the plurality of bits mapped to different users of the same scrambling code, adding and using The scrambling code scrambling process adds the information sequences scrambled by different scrambling codes to obtain the information sequence of the user.

The user information in the embodiment of the present invention may include, but is not limited to, a user's media access control identifier MA CID, or a user serial number, or a user group number, and the like.

[42] The single bit information of the user in the embodiment of the present invention may include, but is not limited to, at least one of the user's response F-ACK information and the user's power control F-PCB information. Wherein, if the single-bit information of the user includes F-ACK information and F-PCB information, the process of performing the expansion and the scrambling process by using the user information further includes distinguishing the F-ACK information and the F-PCB information. The processing may specifically include any one of the following:

[43] (1) The F-ACK information and the F-PCB information are combined as an I channel signal and a Q channel signal, respectively;

[44] (2) The F-ACK information and the power control F-PCB information are respectively used by different orthogonal codes. Expansion

[45] (3) The information sequence obtained by scrambling the F-ACK information and the power control F-PCB information extension is respectively mapped to different physical channel resources.

[46] Optionally, in the embodiment of the present invention, the F-ACK and/or the F-PCB belonging to different mobile terminals that are to be sent are further classified according to channel quality or transmission power, and are divided into multiple groups; The information to be sent is transmitted by using different transmission powers. For example, each group of to-be-transmitted information is mapped to physical channel resources by orthogonal multiplexing, and different transmission powers are used for transmission processing, or, in each group. The scrambled information sequences corresponding to different users are added, and the added results are multiplied by the power gain coefficients of each group, mapped to physical channel resources by orthogonal multiplexing, and transmitted, where orthogonal multiplexing The method may include: frequency division multiplexing, split multiplexing, or frequency division hybrid multiplexing; wherein, the processing divided into multiple groups includes any one of the following methods:

[47] (1) Sorting the F-ACK and/or F-PCB belonging to different mobile terminals according to channel quality or transmission power, and grouping the sorted information in order;

[48] (2) According to the different packet format PF of F-ACK and / or F-PCB belongs to the terminal, the corresponding F-

The ACK and / or F-PCB selections are divided into different groups.

[49] In the embodiment of the present invention, the channel for transmitting single-bit information is extended, so that in the network of the OFDM transmission technology, the extended channel can perform transmission of single-bit information of the user.

[50] For example, the embodiment of the present invention enables the extended F-ACK channel to transmit response information for the OFDMA user by extending the current F-ACK (Forward Answer) channel and the F-PCB (Forward Power Control) channel.

Similarly, the acknowledgment information can also be transmitted for other (such as CDMA) users; similarly, the extended F-PCB channel can provide power control information for OFDMA users, and can also provide power for other (such as CDMA) users. Control information, and so on.

The specific implementation manners of the embodiments of the present invention are described in detail below by taking the F-ACK and/or F-PCB information of the transmission user as an example.

An embodiment of the present invention provides an improved implementation scheme of a forward control channel applicable to a CDMA service channel in a wireless mobile communication OFDM system, where the control channel includes: F-ACK, F-PCB information.

[53] In the improved implementation, each user's F-ACK bit is first subjected to on-off keying modulation to generate an F-ACK symbol, where "ten 1" indicates a positive response, and a vacancy indicates a negative response; each user's F -PCB ratio First, BPSK modulation is performed first, where "ten 1" indicates the added power, indicating the power reduction.

[54] After determining the corresponding F-ACK symbol and/or F-PCB symbol, the network side (such as the base station) will transmit the FA CK bit and/or F-PCB bit by orthogonal code or directly repeat the extension. Converting single-bit F-ACK or F-PCB information into N-bit information; for the extended information code sequence, scrambling the MAC ID-related scrambling code to obtain information of different users Sequence (ie, symbol sequence); After that, the sequences of different users are added and mapped to OFDMA (Orthogonal Frequency Division Multiplexing Access) system (DRCH) (distributed resource channel) or BRCH (block) Resource

Channel, block resource channel) On the channel; finally, the information sequence obtained by the single bit information is subjected to OFDM modulation processing and transmitted through the antenna. Wherein the orthogonal code comprises a Walsh code, DF

T (Discrete Fourier Transform) code, etc.

In the implementation provided by the embodiment of the present invention, the F-ACK information bits of the same user and/or the F-PCB bit transmission processing manner may specifically select any one of the following:

[56] (1) After the extension 吋 is mapped to mutually orthogonal code sequences, add and multiplex together;

[57] (2) After expansion, map to I and Q, respectively, and add them together.

[58] (3) After scrambling, mapping to different OFDM physical channel resource blocks is multiplexed together.

[0] Moreover, in the implementation provided by the embodiment of the present invention, the MACID-related scrambling code may be generated by using all bits of the MACID, or may be generated by using a partial bit of the MACID.

[60] The same channel (e.g., F-ACK channel or F-PCB channel) for different users of different MACIDs may be extended by the same code, or may be extended by different orthogonal codes. The same channel of different users can be divided into two groups, which are sent through I and Q respectively.

The specific implementation structure of the device for implementing information transmission in the wireless communication system according to the embodiment of the present invention is as shown in FIG. 2, and mainly includes the following processing units:

[62] (1) a single-bit information extended scrambling processing unit, configured to expand single-bit information of a user to be transmitted and perform scrambling processing using the user information;

[63] the user information includes: a media access control identifier MACID of the user;

[64] The single-bit information of the user includes: a user's response F-ACK information and/or a user's F-PCB information. [65] The user in the embodiment of the present invention may be a CDMA user, or may also be an OFDMA user.

[66] In the device, the single-bit information extended scrambling processing unit may specifically adopt different implementation manners, for example, may specifically include an extended processing unit and a scrambling processing unit, or only include scrambling extension processing. Unit, the specific implementation structure of each unit is as follows:

[67] an extended processing unit, configured to perform an extended operation on the single-bit information to obtain a corresponding multiple bits;

[68] The scrambling processing unit performs scrambling processing on the plurality of bits obtained by the extended processing unit by using the user information, and obtains an information sequence of the user, such as an information sequence corresponding to the F-ACK information, or an F-PCB information corresponding to the F-PCB information. Information sequence, or a sequence of information corresponding to F-ACK and F-PCB information;

[69] The scrambling extension processing unit is configured to expand and scramble the single-bit information by using the scrambling code of the user information, that is, the single-bit information can be directly scrambled directly by using the MACID of the user, and the same is implemented for the single-bit information. The extended operation of the bit information, so that the information sequence of the user, such as the information sequence corresponding to the F-ACK information, or the information sequence corresponding to the F-PCB information, or the information sequence corresponding to the F-ACK and the F-PCB information, may be obtained. .

[70] (2) an information transmission processing unit, configured to perform OFDM modulation processing on the information sequence obtained by the single-bit information expansion and scrambling processing unit, and transmit the information through the antenna;

[71] In the device, the information sending and processing unit may specifically include:

[72] a mapping processing unit, mapping the information sequence to a physical channel of an OFDMA system, such as a discrete resource channel or a block resource channel;

[73] a modulation transmission processing unit, configured to perform OFDM modulation processing on the information sequence, and transmit the signal to an antenna

, sent through the antenna;

[74] It should be noted that the information transmission processing unit may further include a multi-user processing unit, configured to add information sequences of the plurality of users, and transmit the information sequence of the plurality of users obtained after the addition to the information sequence. The modulation transmission processing unit; the unit is configured such that transmission of single-bit information of a plurality of users, such as transmission of F-ACK or F-PCB information, can be performed simultaneously.

Several specific embodiments provided by the embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[76] Embodiment 1

[77] The specific implementation of this embodiment is shown in FIG. 3, and the corresponding processing process includes: [78] After determining the F-ACK information and the F-PCB information to be delivered, the F-ACK information bits are extended by Wals h codel (Walsh code 1), and the F-PCB information bits are passed through Walsh.

Code2 (Walsh code 2) extension. The multiplication in the figure represents dot multiplication, which is used to multiply the Walsh code with the corresponding information.

[79] After obtaining two extended information bit sequences by dot multiplication processing, the two extended information bit sequences are added by a SUM (summation) unit, and the added result is passed through the user information MACID. (ie scrambling code SCl...n in the figure, where SC (scrambling

Code, scrambling code)) The related scrambling code is scrambled, and users of different MACIDs can use different scrambling codes to scramble, that is, all the bits of the MACID are used to generate scrambling codes.

[80] The sequence of information for all users obtained after scrambling is then added, and the added sequence of information is mapped to physical channel resources (such as DRCH or BRCH) within a physical frame.

[81] Finally, after each OFDM symbol in the physical frame is OFDM-modulated, a chirp signal is obtained and transmitted through the antenna.

[82] Example 2

[83] The specific implementation structure of this embodiment is shown in FIG. 4, and the corresponding processing process includes:

[84] The F-ACK channel and the F-PCB channel are extended by the spreading code, that is, the F-ACK and the F-PCB information are expanded, and specifically, the same Walsh code is used to perform the corresponding point multiplication and expansion processing operation;

[85] The extended F-ACK and F-PCB information are combined as an I signal and a Q signal (that is, added by the SUM unit);

[86] He 1" scrambles the combined signal with the user's MACID scrambling code, and adds the information scrambled by multiple users;

[87] Channel resource mapping for signals obtained by adding F-ACK and F-PCB information for multiple users

The processing such as OFDM modulation, the specific mapping and modulation processing is the same as the processing in FIG. 3; the mapped and modulated signals are transmitted through the antenna.

In this embodiment, the spreading codes of the F-ACK channel and the F-PCB channel may be the same or different.

The spreading code of the F-ACK channel and the F-PCB channel may be an orthogonal code, a random code or an arbitrary code.

[89] Example 3

[90] The specific implementation structure of this embodiment is shown in FIG. 5, and the corresponding processing process includes: [91] The F-ACK information bits and the F-PCB information bits are respectively combined as an I channel signal and a Q channel signal (ie, added

) together to obtain a sequence of information including F-ACK and F-PCB information;

[92] The information sequence is extended by the MACID related scrambling code;

[93] adding the extended information sequence corresponding to each user to each other;

[94] Channel resource mapping is performed on the added information sequence, mapped onto the physical channel, and subjected to OFDM modulation and the like, and then the corresponding F-ACK and F-PCB information are transmitted through the antenna.

[95] Embodiment 4

In this embodiment, a processing implementation scheme for transmitting F-ACK information or F-PCB information of a user, respectively, is specifically described, as shown in FIGS. 6 and 7.

[97] In FIG. 6, specifically, the F-ACK information bits are separately transmitted using the solution provided by the embodiment of the present invention, and the corresponding processing process includes:

[98] expanding the F-ACK information bits by using a Walsh code to obtain a plurality of bit information;

[99] Afterwards, the plurality of bit information is scrambled by using a scrambling code corresponding to the MACID, so that the receiving end can determine the receiving user corresponding to the F-ACK information;

[100] The information sequence of each user subjected to the scrambling process is sequentially subjected to addition processing, mapped to a physical channel, and OFDM modulation processing, and the information sequence including the F-ACK information is transmitted through an antenna.

[101] In FIG. 7, specifically, the F-PCB information bits are separately transmitted using the solution provided by the embodiment of the present invention, and the corresponding processing process includes:

[102] expanding the F-PCB information bit by using a Walsh code to obtain a plurality of bit information;

[103] Afterwards, the plurality of bit information is scrambled by using a scrambling code corresponding to the MACID, so that the receiving end can determine the receiving user corresponding to the F-PCB information;

[104] The information sequence of each user subjected to the scrambling process is sequentially subjected to addition processing, mapped to a physical channel, and OFDM modulation processing, and the information sequence including the F-PCB information is transmitted through an antenna.

[105] Example 5

[106] In this embodiment, as shown in FIG. 8, the corresponding processing process includes:

[107] First, the F-ACK information bits and the F-PCB information bits are respectively extended, and after the scrambling process, the corresponding information sequences, that is, the F-ACK information sequence and the F-PCB information sequence are obtained;

[108] The corresponding multiple user F-ACK information sequences are added together, and the corresponding multiple users' F- The PCB information sequence is subjected to addition processing;

[109] After that, the F-PCB information sequence and the F-ACK information sequence after the addition processing are respectively mapped and mapped to different physical channel resource blocks;

[110] Finally, the mapped information sequence including F-PCB information and F-ACK information is multiplexed in the same physical frame, and after OFDM modulation, it is transmitted through the antenna.

[111] Embodiment 6

[112] In this embodiment, the scrambling code may be generated by a partial bit of the MACID, and accordingly, the extended Walsh code of the same channel (F-A CK channel or F-PCB channel) may be different, for example,

The number of bits of the MACID is 9 bits, and the number of available Walsh codes after expansion is 128.

. In this way, the lower 7 bits of the MACID can be mapped to different Walsh codes, that is, users with different MACIDs of 7 different bits are extended by different Walsh codes. The remaining two bits in the MACID generate different scrambling codes, that is, two different users in the MACID are scrambled by different scrambling codes.

[113] Taking the above example as an example, the specific implementation structure of the embodiment is shown in FIG. 9. The specific processing process includes the following processes:

[114] First, each F-ACK information is divided into four groups, and each F-ACK information in each group is extended by a 7-bit Walsh code, and the extended F-ACK information sequence in each group is used. Performing addition to obtain a sequence of F-ACK information corresponding to each group after the addition;

[115] After that, each group of corresponding F-ACK information sequences is scrambled by using a scrambling code to obtain a scrambled information sequence;

[116] Finally, the scrambled information sequence is added to obtain one symbol, and the road symbol is mapped and processed.

[117] Referring to FIG. 9, the process of transmitting F-PCB information is similar to that of the F-PCB, and therefore will not be described in detail.

[118] Example 7

In this embodiment, the F-ACK and the F-PCB may be distinguished by different Walsh codes, or may be distinguished by different scrambling codes, or may be transmitted through I and Q channels, respectively. For example, Walsh code division can be used to assign Walsh codes of odd and even Walsh codes to F-ACK and F-PCB, respectively.

[120] If the scrambling code is distinguished, the scrambling code that needs to be scrambled for F-PCB and the scrambling code that is scrambled for F-ACK are different; the specific implementation structure of the scrambling code is shown in Figure 10, corresponding The processing specifically includes: [121] First, the F-ACK information and the F-PCB information are respectively scrambled and expanded using the scrambling code corresponding to the user information, and the multiplexed information sequences of the F-ACK information are respectively added, F-PCB The information sequence after the information expansion is added;

[122] After that, the information sequence obtained by adding all the paths corresponding to the F-ACK information is scrambled by the first scrambling code, and the information sequence obtained by adding the one channel corresponding to the F-PCB information is used for the second. The scrambling code is scrambled, and the two scrambled information sequences are added again;

[123] Finally, the information sequence obtained after the addition is mapped and transmitted.

[124] Example 8

In the specific implementation process of the present invention, according to the transmission efficiency requirements of the F-ACK and/or the F-PCBB, the transmission power control of the F-ACK/F-PCB transmission needs to be performed, and the corresponding specific control scheme includes :

[126] First, the F-ACK and/or F-PCB belonging to different mobile terminals to be transmitted by the base station are classified according to channel quality; the corresponding classification manner may be: F-ACK and/or F belonging to different mobile terminals. - PC B sorts according to channel quality, and groups the sorted information in order, and the number of F-ACKs and/or F-PCBs to be sent in each group may be substantially the same or different;

[127] The corresponding grouping method can also be: There are 3 kinds of PF (Packet) from the reverse traffic channel.

Format, packet format), PF itself represents different channel quality, large PF means good channel quality, small PF means poor channel quality, therefore, according to F-ACK and / or F-PCB belongs to the terminal Different PFs are classified. That is, the corresponding F-ACK and / or F-PCB selections are divided into different groups according to the PF.

[128] After that, for each group of information to be sent, different transmission powers are used for transmission processing, and the specific transmission processing manner may use any one of the above embodiments; but each group of mapped physical channel resources Different, specifically by frequency division multiplexing, split multiplexing or frequency division multiplexing multiplexing; for example, F-ACK and / or F-PCB occupy a physical resource of a basic node, but F- ACK/FP

The CB is divided into two groups. Therefore, the physical channel resources of one half of the base nodes can be allocated to one of the groups, and the physical channel resources of the remaining half of the base nodes are allocated to another group;

[129] If the sender is a packet according to the PF, the receiver needs to demodulate the corresponding F-ACK and/or F-PCB information according to the received PF information to different groups.

[130] Taking the processing of the F-ACK information as an example, in the corresponding embodiment 8, the implementation structure of the F-ACK information transmission is as shown in FIG. 11, and the specific processing process includes: [131] First, the four groups of symbols divided by the F-ACK information are scrambled and expanded respectively, wherein the F-ACK1 group contains K1 F-ACK information, and the F-ACK2 group contains K2 F-ACK information, F - The ACK3 group contains K3 F-ACK information, and the F-ACK4 group contains K4 F-ACK information;

[132] After that, the scrambled extended information sequences of each group are respectively added, and the added information sequence is adjusted according to the power requirement to be transmitted, and the power adjustment control is specifically performed by the bow I input power capture signal. ;

[133] Finally, each group of power-adjusted information sequences is multiplexed, mapped, and the like, and the corresponding F-ACK information is transmitted through the antenna.

In summary, the embodiment of the present invention mainly expands the original F-ACK channel and the F-PCB channel, so that the channel can support both the OFDM service and the CDMA service. And these information bits are transmitted using MACID related orthogonal codes or / and scrambling code spreading and scrambling. The receiving end (mobile terminal) can determine the scrambling code and the spreading code by using the MACID information allocated to itself, thereby demodulating the F-ACK information or/and the F-PCB information corresponding to the terminal, thereby greatly reducing CDMA. Control signaling and scheduling complexity of the service.

The above description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of within the technical scope disclosed by the present invention. Changes or substitutions are intended to be included within the scope of the invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

Claim

[1] 1. A method for implementing information transmission in a wireless communication system, comprising: Orthogonal Frequency Division Multiplexing (OFDM) communication system having a CDMA traffic channel in a reverse channel, waiting for a forward control channel The transmitted single-bit information is extended and scrambled, and the obtained information sequence includes user information, and the extension is to expand single-bit information into information of multiple bits; orthogonal frequency division is performed on the processed information sequence. The OFDM modulation process is multiplexed and transmitted through an antenna.

[2] 2. The method according to claim 1, wherein the performing the spreading and scrambling processing comprises:

Performing an extension operation on the single-bit information to obtain a corresponding plurality of bits, and then performing scrambling processing on the plurality of bits by using user information to obtain a sequence of information of the user; or

And expanding and scrambling the single-bit information by using user information, and acquiring the information sequence of the user;

Or,

And expanding and scrambling the single-bit information by using a user-related orthogonal code and a scrambling code to obtain a sequence of information of the user.

[3] The method according to claim 2, wherein the performing the expanding operation on the single-bit information comprises: expanding the single-bit information into multiple bits by using an orthogonal code or directly repeating

[4] The method according to claim 2, wherein the expanding and scrambling processing by using the orthogonal code and the scrambling code associated with the user specifically includes:

Mapping part of the bits in the user information into different orthogonal codes, and performing extended operations on the single bit information of different users by using the orthogonal codes to obtain corresponding multiple bits; and mapping the remaining bits in the user information into Different scrambling codes, scrambling the corresponding multiple bits of different users, and adding the information sequences scrambled by different scrambling codes to obtain the information sequence of the user; or

Aligning some of the bits in the user information into different orthogonal codes, and using the orthogonal codes to Performing an extension operation with the user's single-bit information to obtain a corresponding plurality of bits; further mapping the remaining bits in the user information into different scrambling codes, and adding the plurality of bits mapped to different users of the same scrambling code After adding, the scrambling code scrambling process is used, and the information sequences scrambled by different scrambling codes are added to obtain the information sequence of the user.

[5] 5. The method according to claim 2, 3 or 4, wherein the orthogonal code comprises a Walsh code or a Discrete Fourier Transform DFT code.

[6] 6. The method according to claim 1, wherein the performing OFDM modulation processing on the information sequence obtained by the processing specifically includes:

The information sequence is mapped to a discrete resource channel DRCH or a block resource channel BRCH of an orthogonal frequency division multiple access OFDMA system, and OFDM modulation processing is performed.

[7] 7. The method according to claim 1, wherein before performing the OFDM modulation process, the method further comprises: adding information sequences of a plurality of users, and adding the plurality of users The information sequence serves as a sequence of information that requires OFDM modulation processing.

[8] 8. The method according to claim 1, 2, 3, 4, 6 or 7, wherein the user information comprises: a media access control identifier MACID of the user, or a user serial number, or , user group number.

[9] 9. The method according to claim 1, 2, 3, 4, 6 or 7, wherein the single bit information of the user comprises: a user's response F-ACK information and a power control of the user At least one of the F-PCB information.

[10] 10. The method according to claim 9, wherein if the single bit information of the user includes F-ACK information and F-PCB information, the expanding and utilizing user information is performed. The processing of the interference process further includes the process of distinguishing the F-ACK information and the F-PCB information, and the specifics include: combining the F-ACK information and the F-PCB information as the I channel signal and the Q channel signal respectively; or

And expanding the F-ACK information and the power control F-PCB information by using different orthogonal codes respectively;

Or,

Information sequence obtained by scrambling the F-ACK information and power control F-PCB information extension Map to different physical channel resources separately.

[11] The method according to claim 9, wherein the method further comprises:

The F-ACKs and/or F-PCBs belonging to different mobile terminals to be transmitted are classified according to channel quality or transmission power, and are divided into a plurality of groups;

The information to be transmitted for each group is transmitted with different transmission power.

[12] 12. The method according to claim 11, wherein the processing divided into a plurality of groups comprises:

The F-ACK and/or F-PCB belonging to different mobile terminals are sorted according to channel quality or transmission power, and the sorted information is grouped in order;

Or,

According to the different packet format PF of the F-ACK and / or F-PCB belongs to the terminal, the corresponding F-AC K and / or F-PCB selection is divided into different groups.

[13] 13. The method according to claim 11, wherein the processing of transmitting by using different sending powers comprises:

Mapping each group of to-be-transmitted information to physical channel resources by orthogonal multiplexing, and transmitting processing using different transmission powers;

Or,

The scrambled information sequences corresponding to different users in each group are added, and the added result is multiplied by the power gain coefficients of each group, mapped to physical channel resources by orthogonal multiplexing, and transmitted.

[14] 14. The method according to claim 13, wherein the orthogonal multiplexing manner comprises: frequency division multiplexing, split multiplexing or frequency division hybrid multiplexing.

[15] 15. An apparatus for implementing information transmission in a wireless communication system, comprising: a single bit information spread scrambling processing unit, for treating an OFDM communication system having a CDMA traffic channel in a reverse channel, The transmitted single-bit information of the user is expanded and scrambled by using user information, the extension is information for expanding single-bit information into a plurality of bits; and the information transmission processing unit is configured to perform scrambling processing on the single-bit information. The information sequence obtained by the unit is subjected to OFDM modulation processing and transmitted through an antenna.

[16] 16. The apparatus according to claim 15, wherein the single bit information is expanded and added The interference processing unit specifically includes: an extended processing unit and a scrambling processing unit, or a scrambling extension processing unit, where:

An extension processing unit, configured to perform an expansion operation on the single-bit information to obtain a corresponding plurality of bits; and a scrambling processing unit, performing scrambling processing on the plurality of bits obtained by the extension processing unit by using the user information, to obtain an information sequence of the user;

Or,

The scrambling extension processing unit is configured to expand and scramble the single-bit information by using the scrambling code of the user information to obtain the information sequence of the user.

[17] 17. The device according to claim 15, wherein the information transmission processing unit comprises:

Mapping processing unit, mapping the information sequence to an isolated resource channel or a block resource channel of an orthogonal frequency division multiple access OFDMA system;

A modulation transmission processing unit is configured to perform OFDM modulation processing on the information sequence, and transmit the signal to an antenna for transmission through an antenna.

[18] 18. The device according to claim 17, wherein the information transmission processing unit further comprises a multi-user processing unit, configured to add information sequences of the plurality of users, and obtain the obtained information after adding The information sequence of the plurality of users is passed to the modulation transmission processing unit.