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Time division duplex system as well as dynamic frame structure and configuration method thereof

A technology of time division duplex system and configuration method, applied in transmission systems, digital transmission systems, error prevention and other directions, can solve problems such as mutual interference, wireless frame uplink and downlink interference, and achieve the effect of eliminating interference

Active Publication Date: 2011-04-20
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] The technical problem to be solved by the present invention is to provide a time-division duplex system and its dynamic frame structure and configuration method, which are used to solve the problem of uplink and downlink interference between wireless frames configured with uplink and downlink configurations during uplink and downlink transmission and the problem of uplink and downlink interference. Mutual interference before and after configuration conversion

Method used

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  • Time division duplex system as well as dynamic frame structure and configuration method thereof
  • Time division duplex system as well as dynamic frame structure and configuration method thereof
  • Time division duplex system as well as dynamic frame structure and configuration method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0080] As shown in Table 3, a composition table of a radio frame of the TDD system in Embodiment 1 is shown.

[0081] table 3:

[0082]

[0083] The radio frame includes 10 subframes, and the subframe numbers are respectively marked as: 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9. "D" indicates that the subframe is a downlink subframe; "U" indicates that the subframe is an uplink subframe; "S" indicates that the subframe is a special subframe; C indicates that the subframe is a dynamic subframe. In Table 3, subframe 0 is a downlink subframe; subframe 1 is a special subframe (that is, the subframe includes both uplink transmission and downlink transmission); subframes 2, 3, and 4 are uplink subframes frame; subframe 5 is a downlink subframe; subframe 6 is a special subframe; subframes 7 and 8 are uplink subframes; subframe 9 is a dynamic subframe.

[0084] Wherein, the subframe 9 is a dynamic subframe C, and the state types of the dynamic subframe C include at least two types, at lea...

Embodiment 2

[0094] As shown in Table 4, a subframe list of a radio frame of the TDD system in Embodiment 2 is shown.

[0095] Table 4:

[0096]

[0097]

[0098] The radio frame includes 10 subframes, and the subframe numbers are respectively marked as: 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9. "D" indicates that the subframe is a downlink subframe; "U" indicates that the subframe is an uplink subframe; "S" indicates that the subframe is a special subframe; C indicates that the subframe is a dynamic subframe. In Table 4, subframe 0 is a downlink subframe; subframe 1 is a special subframe (that is, the subframe includes both uplink transmission and downlink transmission); subframes 2 and 3 are uplink subframes; Subframe 4 is a dynamic subframe; subframe 5 is a downlink subframe; subframe 6 is a special subframe; subframes 7 and 8 are uplink subframes; subframe 9 is a downlink subframe.

[0099] Wherein, subframe 4 is a dynamic subframe C, and the dynamic subframe includes at least two type...

Embodiment 3

[0108] As shown in Table 5, a subframe list of a radio frame of the TDD system in Embodiment 3 is shown.

[0109] table 5:

[0110]

[0111] The radio frame includes 10 subframes, and the subframe numbers are respectively marked as: 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9. "D" indicates that the subframe is a downlink subframe; "U" indicates that the subframe is an uplink subframe; "S" indicates that the subframe is a special subframe; C indicates that the subframe is a dynamic subframe. In Table 5, subframe 0 is a downlink subframe; subframe 1 is a special subframe (that is, the subframe includes both uplink transmission and downlink transmission); subframes 2 and 3 are uplink subframes; Subframe 4 is a dynamic subframe; subframes 5, 6, 7, 8, and 9 are downlink subframes.

[0112] Wherein, subframe 4 is a dynamic subframe C, and the dynamic subframe includes at least two types of states, at least one of which is a downlink subframe state. This includes at least two states: a d...

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Abstract

The invention discloses a time division duplex system, a dynamic frame structure based on the time division duplex (TDD) system and a configuration method. In a wireless frame, a subframe is selected as a dynamic subframe which has various states, and the states comprise an uplink subframe state, a downlink subframe state and an empty subframe state. In the time division duplex (TDD) system, when the adjacent boundaries of domains adopting different uplink and downlink configurations or the subdomain in the domain adopting certain uplink and downlink configuration changes the uplink and downlink configuration, the state of the dynamic subframe is adjusted so as to avoid the overlapping phenomenon of the uplink subframe and the downlink subframe of the adjacent cells adopting different uplink and downlink configurations, thus eliminating interference between the uplink subframe and the downlink subframe; and when a service type in certain subdomain is changed, the uplink and downlink configuration can be flexibly converted into other uplink and downlink configurations.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a time division duplex system, and a dynamic frame structure and configuration method based on the time division duplex (Time Division Duplex, TDD) system. Background technique [0002] In a wireless system that transmits data in units of radio frames, the up / down link of wireless air interface transmission generally transmits data in units of radio frames; wherein, each radio frame consists of several subframes ( Subframe), and each subframe is composed of an Orthogonal Frequency Division Multiplexing (OFDM) symbol (Symbol) as a basic unit. For the Long-Term Evolution system LTE (Long-Term Evolution), each radio frame consists of 10 subframes. [0003] The current LTE, Worldwide Interoperability for Microwave Access (Wimax), and Ultra Mobile Broadband (UMB) systems all have two duplex methods: frequency division duplex FDD (Frequency Division Duplex) and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/26
CPCH04L1/0083
Inventor 辛雨郝鹏郁光辉胡留军
Owner ZTE CORP
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