Method and device for implementing information transfer in wireless communication system

A wireless communication system and information transmission technology, applied in the field of information transmission, can solve the problem that the F-ACK channel carries multiple F-ACK bit information, CDMA users cannot carry power control information, and CDMA users cannot realize single-bit information transmission, etc. problems, to achieve the effect of reducing the complexity of control signaling and scheduling

Inactive Publication Date: 2008-03-12
闫俊娥
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] However, if CDMA users in the same sub-segment use the same basic node to transmit data, since the F-ACK channel cannot carry multiple F-ACK bit information for a certain basic node, it can only carry one F-ACK bit information for a certain basic node. ACK bit information
Therefore, the current F-ACK channel cannot carry acknowledgment information for CDMA users using basic nodes
For the F-PCB channel, due to the same reason, t...

Method used

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  • Method and device for implementing information transfer in wireless communication system
  • Method and device for implementing information transfer in wireless communication system
  • Method and device for implementing information transfer in wireless communication system

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Embodiment 1

[0107] The specific implementation of this embodiment is shown in Figure 3, and the corresponding processing process includes:

[0108]After determining the F-ACK information and F-PCB information to be transmitted, the F-ACK information bits are expanded by Walsh code1 (Walsh code 1), and the F-PCB information bits are expanded by Walshcode2 (Walsh code 2) expand. Wherein, the multiplication in the figure means dot multiplication, which is used to perform a dot multiplication operation on Walsh codes and corresponding information.

[0109] After obtaining two extended information bit sequences by dot product processing, the two extended information bit sequences are added through a SUM (summation) unit, and the result after the addition is passed through MACID (that is, in the figure scrambling code SC1...n, where SC (scrambling code, scrambling code))-related scrambling codes perform scrambling operations, and users with different MACIDs can use different scrambling codes f...

Embodiment 2

[0113] The specific implementation structure of this embodiment is shown in Figure 4, and the corresponding processing process includes:

[0114] The F-ACK channel and the F-PCB channel are extended by the extension code, that is, the F-ACK and F-PCB information is extended, specifically, the same Walsh code is used to perform the corresponding point product extension processing operation;

[0115] Composite the expanded F-ACK and F-PCB information as the I-channel signal and the Q-channel signal respectively (that is, add and process through the SUM unit);

[0116] Use the scrambling code of the user's MACID to scramble the compounded signal, and add the scrambled information of multiple users;

[0117] Perform channel resource mapping, OFDM modulation and other processing on the signals containing the F-ACK and F-PCB information of multiple users obtained after the addition. The specific mapping and modulation processing methods are the same as those in Figure 3; the mapped ...

Embodiment 3

[0120] The specific implementation structure of this embodiment is shown in Figure 5, and the corresponding processing process includes:

[0121] The F-ACK information bit and the F-PCB information bit are respectively used as an I-channel signal and a Q-channel signal to compound (ie add) together to obtain an information sequence including F-ACK and F-PCB information;

[0122] Then expand the information sequence through the MACID-related scrambling code;

[0123] Adding the extended information sequences corresponding to each user;

[0124] Channel resource mapping is performed on the added information sequence, mapped to a physical channel, and after processing such as OFDM modulation, the corresponding F-ACK and F-PCB information is sent through the antenna.

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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

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a method and system for realizing information transmission in a wireless communication system. Background technique [0002] At present, 3GPP2 (third generation mobile communication cooperation project group 2) has proposed an AIE (Air Interface Evolution, Air Interface Evolution Plan) technology. AIE adopts new air interface technologies, such as OFDM (Orthogonal Frequency Division Multiplexing, Orthogonal Frequency Division Multiplexing) and MIMO (Multiple Input Multiple Output, Multiple Input Multiple Output), etc., as well as technologies such as interference cancellation, so as to facilitate Improve spectral efficiency and peak data rates to meet the demands of wireless communications. [0003] In AIE technology, a combination of OFDMA (Orthogonal Frequency Division Multiple Access, Orthogonal Frequency Division Multiple Access) and CDMA (Code Divisio...

Claims

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Application Information

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IPC IPC(8): H04B7/26H04L27/26H04Q7/38
CPCH04J13/00H04L5/0021H04L27/2626
Inventor 李斌阮卫夏林峰杜颖钢罗毅
Owner 闫俊娥
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