Terminal access method

A terminal access and routing technology, applied in the field of communications, can solve the problems of inflexible configuration and effective application, and achieve the effect of satisfying backward compatibility

Inactive Publication Date: 2009-09-30
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the definition of the frame structure of the 16e system, a Time Division duplex (TDD) frame only includes one downlink subframe and one uplink subframe, and the feedback of information sent by the downlink subframe of this frame will be sent in the next frame at the earliest. Sent in the uplink subframe, some services and functions that require fast feedback and low delay cannot be effectively applied in the current mobile WiMAX system
In addition, the OFDM symbol length is composed of a cyclic prefix (CP for short) and a useful OFDM symbol. The CP can effectively combat inter-symbol interference and adjacent channel interference caused by multipath. In the current mobile WiMAX system, the CP length is set at It cannot be changed in a frame, and the frame structure cannot be flexibly configured according to different application scenarios

Method used

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Embodiment Construction

[0021] The specific implementation manners of the present invention will be described in detail below with reference to the accompanying drawings.

[0022] figure 1 It is a flowchart of a terminal access method according to an embodiment of the present invention. Such as figure 1 As shown, the terminal access method includes the following steps: S102, the base station determines the specific composition structure of each uplink and downlink subframe in the frame structure according to the cyclic prefix configuration of the wireless communication system, and sends each uplink and downlink subframe to the terminal through a broadcast message Frame composition structure information; S104, the terminal selects a specific uplink subframe to send access information to the base station according to the composition structure information of each uplink and downlink subframe, wherein the frame structure includes one or more downlink subframes, and one or more A plurality of uplink sub...

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Abstract

The invention discloses a terminal access method. The terminal access method comprises the following steps that: a base station configures and determines the specific composition structures of uplink and downlink subframes of a frame structure according to a cyclic prefix of a mobile communication system and sends the composition structure information of the uplink and downlink subframes to a terminal through a broadcasting message; and the terminal selects a particular uplink subframe to send the access information to the base station according to the composition structure information of the uplink and downlink subframes, wherein the frame structure comprises one or more downlink subframes and one or more uplink subframes. Each downlink subframe and each uplink subframe are formed by one or more basic subframe units and an idle time slot respectively. The method can meet the requirements of the IMT-Advanced on the systematic performance.

Description

technical field [0001] The present invention relates to the field of communications, and more particularly to a terminal access method. Background technique [0002] Orthogonal Frequency Division Multiplexing (OFDM) is a multi-carrier transmission mode. By converting the high-speed transmission data stream into a low-speed parallel transmission data stream, the system is frequency-selective to multipath fading channels. Sensitivity is greatly reduced. The Microwave Access Global Access (WiMAX) system based on Orthogonal Frequency Division Multiple Access (OFDMA) is a system using OFDM technology. From the perspective of the frequency domain, different users occupy a certain The number of orthogonal subcarrier resources is used to achieve the purpose of multiple access. [0003] With the rapid development of communication technology, the mobile WiMAX system based on the IEEE 802.16e air interface standard can no longer meet people's needs for high transmission rate, high th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W48/10H04L27/26
Inventor 方惠英曲红云
Owner ZTE CORP
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