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Signal transmission method of physical descending control channel in descending pilot frequency time slot

A technology of physical downlink control and pilot time slot, which is applied in the field of communication, can solve problems such as the conflict of the main synchronization signal, achieve the effect of small delay, and solve the conflict between the physical downlink control channel and the main synchronization signal

Active Publication Date: 2012-10-10
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 physical downlink control channel transmission method in the downlink pilot time slot, which solves the problem of conflict between the physical downlink control channel and the primary synchronization signal in DwPTS

Method used

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  • Signal transmission method of physical descending control channel in descending pilot frequency time slot
  • Signal transmission method of physical descending control channel in descending pilot frequency time slot
  • Signal transmission method of physical descending control channel in descending pilot frequency time slot

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Embodiment Construction

[0053] In order to facilitate a deep understanding of the present invention, the following in conjunction with the attached Figure 1-6 , some specific examples incorporating the method of the invention are given.

[0054] figure 2 It is a specific embodiment of the physical downlink control channel signal transmission of the present invention. In the LTE system, a 10ms radio frame is divided into two half-frames, each half-frame is divided into 10 time slots with a length of 0.5ms, and two time slots form a subframe with a length of 1ms, and a radio frame contains 10 subframes (numbered from 0 to 9), and a radio frame contains 20 time slots (numbered from 0 to 19). In a conventional cyclic prefix, a subframe includes 14 OFDM symbols, assuming that the DwPTS includes 3 OFDM symbols, and the uplink and downlink switching period is 5ms. The base station sends the primary synchronization signal on the first symbol in the DwPTS, one OFDM symbol is used to transmit the physical...

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Abstract

The invention relates to a physical downlink control channel signal sending method in a downlink pilot frequency time slot; physical downlink control channel signals are sent from one or a plurality of symbols of the downlink pilot frequency time slot by a base station; the resource for transmitting the physical downlink control channel signals is different from the resource for transmitting master synchronizing signals of synchronizing signals. When the ratio of the base station in an uplink time slot and a downlink time slot is 3:1, the number of symbols for transmitting the physical downlink control channel in the downlink pilot frequency time slot can be four; under other conditions, the number of symbols for transmitting the physics downlink control channel in the downlink pilot frequency time slot can be one, two or three; when the number of symbols is one, the signals can be sent from a second signal of the downlink pilot frequency time slot. The physical downlink control channel signal sending method of the invention has little time delay and small influence on other channels and solves the problems of collision between the physical downlink control channel and the master synchronizing signals.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method for sending a physical downlink control channel in a downlink pilot time slot. Background technique [0002] The frame structure of LTE (Long Term Evolution, long-term evolution) system TDD mode is as follows figure 1 shown. In this frame structure, a 10ms radio frame is divided into two half-frames, each half-frame is divided into 10 time slots with a length of 0.5ms, and two time slots form a subframe with a length of 1ms. It includes 10 subframes (numbered from 0 to 9), and one radio frame includes 20 time slots (numbered from 0 to 19). For the conventional cyclic prefix (Cyclic Prefix, CP) with a length of 5.21us and 4.69us, a time slot contains 7 uplink / downlink symbols with a length of 66.7us, of which the length of the first symbol cyclic prefix is ​​5.21us, and the remaining 6 The cyclic prefix length of the symbol is 4.69us; for the extended cyclic prefix wi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/26
CPCH04W72/14H04L5/0053H04L5/0007H04L5/14H04L5/0048H04W72/23
Inventor 戴博夏树强郝鹏梁春丽
Owner ZTE CORP