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Information interaction method

A technology for information interaction and transmission of information, applied in the field of information interaction, can solve problems such as insufficient base station processing time, inability to feedback, insufficient terminal processing time, etc., to meet the needs of large throughput, increase system capacity, and reduce service delay Effect

Inactive Publication Date: 2009-09-09
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But for subframe 6, because the processing time of the terminal is not enough, it cannot feed back at Tf1 and Tf2, and for subframe 1, because the processing time of the base station is not enough, it cannot retransmit at T11, so the retransmission time will be greater than one frame long

Method used

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Embodiment Construction

[0032] The specific implementation manners of the present invention will be described in detail below with reference to the accompanying drawings.

[0033] figure 1 is a flowchart of an information interaction method according to an embodiment of the present invention. Such as figure 1 As shown, the information exchange method includes the following steps: S102, the base station configures a wireless frame for information exchange with the terminal; S104, the base station performs information exchange with the terminal through the wireless frame.

[0034] Among them, in a TDD OFDM wireless system, information is transmitted and received at the same frequency point with a fixed frame length (wireless frame), and this frame length can be fixed to a required value according to design requirements. Among them, a wireless frame is divided into several equal-length subframes, called wireless subframes, Figure 2a is a radio subframe. A wireless subframe includes several OFDM sy...

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Abstract

The invention discloses an information interaction method, which comprises the following steps that: a base station performs configuration on a radio frame used for performing information interaction with a terminal; and the base station performs information interaction with the terminal through the radio frame, wherein the frame length of the radio frame is fixed; the radio frame comprises a plurality of equilong wireless subframes; the terminal transmits information to the base station through one or more uplink subframes of the plurality of the wireless subframes; and the base station transmits information to the base station through one or more downlink subframes of the plurality of the wireless subframes. The method can reduce the service time delay of a wireless communication system and improve the system capacity of the wireless communication system.

Description

technical field [0001] The present invention relates to the communication field, and more specifically relates to an information interaction method. Background technique [0002] As a multi-carrier transmission mode, OFDM converts the high-speed transmission data stream into a set of low-speed parallel transmission data streams, which greatly reduces the sensitivity of the system to the frequency selectivity of multipath fading channels, while the loop The introduction of the prefix further enhances the ability of the system to resist Inter-symbol Interference (ISI). In addition, the characteristics of high bandwidth utilization and simple implementation make Orthogonal Frequency Division Multiplexing (OFDM) Multiplex (OFDM for short) is more and more widely used in wireless communication domains, such as wireless local area network (WLAN) system, Worldwide Interoperability for Microwave Access (WiMax) system based on Orthogonal Frequency Division Multiplexing Multiple Acces...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W80/02H04B7/26
Inventor 孙长印
Owner ZTE CORP
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