Transmission method and apparatus for long term evolution TDD system

A technology of a time division duplex system and a transmission method, which is applied in the implementation field of a long term evolution time division duplex system, and can solve the problems of inflexible coverage support, waste of guard interval, affecting transmission efficiency, etc.

Active Publication Date: 2009-04-22
DATANG MOBILE COMM EQUIP CO LTD
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  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

Such a configuration method is not flexible enough to support coverage. For example, for a cell with a coverage requirement of 50km, its frame structure must be configured to support a maximum coverage of 120km. At this time, a large part of the time slot is wasted as a guard interval. , which actually affects the transmission efficiency
[0013] It can be seen that in the prior art, the length and position of the special time slot area are fixed, and the cov

Method used

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  • Transmission method and apparatus for long term evolution TDD system
  • Transmission method and apparatus for long term evolution TDD system
  • Transmission method and apparatus for long term evolution TDD system

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Embodiment Construction

[0088] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples.

[0089] The transmission method and device of the Long-Term Evolution Time Division Duplex (LTE TDD) system of the present invention reconfigures the half-frame structure of the wireless frame used by the system for service transmission, and the reconfigured half-frame contains more than one regular time slots and one or more special time slot areas used to transmit downlink pilot time slots, guard intervals, and uplink pilot time slots; and determine the downlink pilot time slots, The guard interval and the length of the uplink pilot time slot determine the wireless frame structure used for service transmission; the wireless frame determined by the system is used for service transmission.

[0090] The key of the present invention is to realize the flexi...

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Abstract

The invention discloses a transmission method for a long-term evolution time division duplex system; by carrying out reconfiguration to a half-frame structure, the invention leads the quantity of a special time slot area, and a downlink pilot time slot, a protection interval or an uplink pilot slot included in the special time slot area to be capable of realizing flexible configuration according to the requirement of a system to covering ranges, thereby achieving flexible support of different covering ranges. The invention simultaneously discloses a transmission device for the long-term evolution time division duplex system which uses the method, and achieves flexible support of different covering ranges.

Description

technical field [0001] The present invention relates to the realization technology of the long-term evolution time-division duplex (LTE TDD) system, in particular to a transmission method and device of the long-term evolution time-division duplex (LTE TDD) system. Background technique [0002] Currently, the Third Generation Mobile Communication System Standardization Organization (3GPP) has initiated a research project on the Long Term Evolution (LTE) of the 3G radio interface technology. According to the research progress, the LTE system determines to support 2 frame structures: [0003] The first type of frame structure see figure 1 , this type of frame structure is applicable to FDD and TDD systems: [0004] Such as figure 1 As shown, the frame length of the first type of wireless frame is 10ms, which consists of 20 time slots, each time slot length is 0.5ms, such as figure 1 As shown, the labels are from 0 to 19. Two consecutive time slots are defined as a subframe...

Claims

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Application Information

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IPC IPC(8): H04L5/26H04L1/00H04B7/26
CPCH04B7/2656H04W72/0446H04W56/003H04L5/0048H04L5/14
Inventor 潘学明索士强唐海王映民谢永斌
Owner DATANG MOBILE COMM EQUIP CO LTD
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