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Channel allocation method and interaction method in large-bandwidth orthogonal frequency division multiplexing system

A technology of orthogonal frequency division and channel allocation, applied in diversity/multi-antenna system, communication between multiple stations, etc., can solve the problem that terminals without multiple capabilities and multiple bandwidths can be compatible at the same time. The effect of simple scheduling, low resource overhead, and good work performance

Inactive Publication Date: 2009-08-26
ZTE CORP
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Problems solved by technology

[0004] In the prior art, for the OFDM system, there is no system in which terminals with multiple capabilities (that is, terminals with multiple bandwidths) can be compatible at the same time

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  • Channel allocation method and interaction method in large-bandwidth orthogonal frequency division multiplexing system
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  • Channel allocation method and interaction method in large-bandwidth orthogonal frequency division multiplexing system

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Embodiment Construction

[0037] The technical solution of the present invention will be described in more detail below with reference to the drawings and embodiments.

[0038] The present invention proposes a channel allocation method in a large bandwidth OFDM system, such as figure 1 shown, including:

[0039] A. According to the basic bandwidth, the system bandwidth is divided into several sub-bandwidths. The size of each sub-bandwidth is equal to the size of any basic bandwidth. Each sub-bandwidth has a set of SCH (SynchroIluauonChannel, synchronization channel), BCH (Broadcast Channel, broadcast channel) ), and RACH (RandomAccess Channel, random access channel);

[0040] The basic bandwidths are the smallest bandwidths supported by the system, or the smallest bandwidths supported by the system for terminals accessing the system. The selection of several basic bandwidths can be determined according to the actual system. If only the smallest bandwidth—such as 20M—is selected as the basic bandwidth...

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Abstract

The invention provides a channel allocation method and an interaction method in a large-bandwidth orthogonal frequency division multiplexing system. The channel allocation method comprises the following steps that: A, the system bandwidth is divided into a plurality of sub-bandwidths according to basic bandwidths; the size of each sub-bandwidth is equal to that of any basic bandwidth; each sub-bandwidth respectively has a set of synchronous channel SCH, broadcast channel BCH and random access channel RACH; and the basic bandwidth are a plurality of minimal bandwidths among the bandwidths supported by the system or a plurality of minimal bandwidths among terminal bandwidths which are accessed into the system and supported by the system; and B, one or more sub-bandwidth is correspondingly allocated to each terminal according to the terminal bandwidth and is used as an interactive channel of each terminal. The methods are compatible for the access of the terminals with various capabilities. The system can simultaneously ensure good working performance for controlling the channels with low expenses on SCH, BCH and RACH resources. The system has simple dispatch.

Description

technical field [0001] The invention relates to a wireless communication system, in particular to a channel allocation method and an interaction method in a large bandwidth orthogonal frequency division multiplexing system. Background technique [0002] The fourth-generation 4G wireless communication system has higher spectral efficiency than the third-generation wireless communication system. The goal of the 4G system is to achieve a data transmission rate of 100Mbit / s for mobile users and 1Gbit / s for static users before 2010. Due to the needs of smooth evolution of the wireless communication system, in order to protect the interests of operators, within a certain period of time, the fourth generation wireless communication system and the third generation wireless communication system (such as time division synchronous code division multiple access TD-SCDMA system or 802.16E systems, etc.) will be compatible or coexist. [0003] The bandwidth of the 4G wireless communicati...

Claims

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Application Information

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IPC IPC(8): H04B7/26H04B7/02
Inventor 韩小江苟伟
Owner ZTE CORP
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