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Method for increasing length of common GP (guard period) regions of TD-SCDMA (time division-synchronous code division multiplex access) and LTE-TDD (long term evolution-time division duplex) subframes and evolved Node

A technology of TD-SCDMA and evolved base stations, which is applied in the field of evolved base stations, and can solve problems such as failure to meet system requirements, short public equivalent GP area, etc.

Active Publication Date: 2015-01-21
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] The technical problem to be solved by the embodiments of the present invention is to provide a method for expanding the length of the common GP area of ​​TD-SCDMA and LTE-TDD subframes, aiming to solve the problem that the public equivalent GP area in the prior art is short and cannot meet the system requirements question

Method used

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  • Method for increasing length of common GP (guard period) regions of TD-SCDMA (time division-synchronous code division multiplex access) and LTE-TDD (long term evolution-time division duplex) subframes and evolved Node
  • Method for increasing length of common GP (guard period) regions of TD-SCDMA (time division-synchronous code division multiplex access) and LTE-TDD (long term evolution-time division duplex) subframes and evolved Node
  • Method for increasing length of common GP (guard period) regions of TD-SCDMA (time division-synchronous code division multiplex access) and LTE-TDD (long term evolution-time division duplex) subframes and evolved Node

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Embodiment 1

[0031] see Figure 4 A method for expanding the length of the TD-SCDMA and LTE-TDD subframe common GP area provided by Embodiment 1 of the present invention includes:

[0032] S102. The evolved base station of the LTE-TDD system silences the DWPTS when transmitting the LTE-TDD subframe, that is, stops the PDSCH (Physical Downlink Shared Channel) scheduling on the DWPTS and stops the transmission of the pilot signal on the DWPTS ;

[0033]S103, the evolved base station of the LTE-TDD system notifies the dual-mode RRU to perform the uplink and downlink conversion of the radio frequency switch and the frame number of the corresponding LTE-TDD subframe, so that the dual-mode RRU transmits the frame number notified by the evolved base station In the LTE-TDD subframe, the uplink and downlink conversion of the RF switch is performed on the symbol notified by the evolved base station, that is, the RF switch equivalent to the dual-mode RRU performs uplink and downlink conversion after...

Embodiment 2

[0043] An evolved base station provided by Embodiment 2 of the present invention includes:

[0044] The stop module 12 is configured to silence the DWPTS when transmitting the LTE-TDD subframe, that is, stop PDSCH scheduling on the DWPTS and stop sending pilot signals on the DWPTS.

[0045] The notification module 13 is used to notify the dual-mode RRU to perform the uplink and downlink conversion of the radio frequency switch and the frame number of the corresponding LTE-TDD subframe, so that the LTE-TDD subframe of the frame number notified by the dual-mode RRU is transmitted by the evolved base station. At frame time, the uplink and downlink conversion of the RF switch is performed on the symbol notified by the evolved base station, that is, the RF switch equivalent to the dual-mode RRU performs uplink and downlink conversion after the DWPTS of TD-SCDMA is transmitted, and the RF switch turns off LTE-TDD in advance downlink frame.

[0046] In Embodiment 2 of the present in...

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Abstract

The invention is suitable for the field of communications and provides a method for increasing the length of common GP (guard period) regions of TD-SCDMA (time division-synchronous code division multiplex access) and LTE-TDD (long term evolution-time division duplex) subframes and an evolved Node B. The method comprises the following steps that: when transmitting LTE-TDD subframes, the evolved Node B of the LTE-TDD system stops scheduling a PDSCH (physical downlink shared channel) on a DWPTS (down-link pilot symbol) and sending pilot signals on the DWPTS; and the evolved Node B of the LTE-TDD system notifies a dual-mode remote radio unit (RRU) of symbols on which up-link and down-link conversion of a radio frequency switch is implemented and numbers of the corresponding LTE-TDD subframes so as to ensure that the dual-mode RRU implements up-link and down-link conversion of the radio frequency switch on the symbols notified by the evolved Node B when transmitting the LTE-TDD subframes with numbers notified by the evolved Node B. The method ensures the length of the common equivalent GP regions of the TD-SCDMA and LTE-TDD subframes to be increased to the sum of length of the GP of the TD-SCDMA and the UpPTS (up-link pilot symbol) and can meet the system requirement.

Description

technical field [0001] The invention belongs to the field of communication, and in particular relates to a method for expanding the length of a common GP area of ​​a TD-SCDMA and LTE-TDD subframe and an evolved base station. Background technique [0002] see figure 1 , In the frame structure of the LTE-TDD (Long Term Evolution-Time Division Duplex, Long Term Evolution-Time Division Duplex) system, 10ms is a radio frame, and a radio frame includes two half-frames of 5ms, and each half-frame includes five 1ms subframe. Among the 10 subframes in every 10ms, some are downlink subframes for the base station to transmit signals, some are uplink subframes for the base station to receive signals, and some are special subframes for carrying DwPTS (down-link pilot symbol, downlink pilot Time slot) signal, carrying UpPTS (Up-link pilot symbol, uplink pilot time slot) signal and GP (guard time slot) as uplink and downlink conversion. The uplink and downlink allocation of subframes ca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H04L1/06H04W88/08
Inventor 杨武涛邓爱林蓝金巧王科钻
Owner HUAWEI TECH CO LTD