Time delay control method and time delay control system

Abstract

The invention provides a time delay control method and system .The time delay control method comprises the steps that a first transmitting time interval adopted for data transmission in a network is obtained, wherein the first transmitting time interval is used for receiving, transmitting and processing communication network data; the number of OFDM symbols of the first transmitting time interval is determined; approximate numbers of the number of the OFDM symbols of the first transmitting time interval are obtained; any approximate number is set as the number of OFDM symbols of a second transmitting time interval, wherein the second transmitting time interval is used for receiving, transmitting and processing communication network data .According to the technical scheme, the borders of the upstream and the downstream of a user using sTTI are aligned to the borders of the upstream and the downstream of a user using TTI, upstream and downstream cross interference is avoided, the condition that transmitting and receiving are both carried out at the same time is avoided, and the implementation difficulty of a base station product is reduced .

Description

technical field [0001] The present invention relates to the technical field of communications, and in particular, to a delay control method and a delay control system. Background technique [0002] At present, with the development of the mobile Internet, a large number of application services that meet various specific functions have emerged. Some of these services have lower requirements on data delay, such as sending and receiving emails, downloading movies, etc., while others have strict requirements on data delay. Requirements, such as online games, snapping up, grabbing red envelopes, etc., such services usually require the shortest possible delay of user data. In an LTE (Long Term Evolution of Universal Mobile Technology) network, TTI (Transmission Time Interval, transmission time interval) is an important indicator affecting user data delay. CP (Cyclic Prefix, cyclic prefix) includes two cases of ordinary cyclic prefix and extended cyclic prefix. The TTI used by the ...

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Problems solved by technology

When the number of OFDM symbols contained in the sTTI is 5, the uplink and downlink TTI boundaries of user 2 cannot be aligned with the uplink and downlink boundaries of user 1, and there will be uplink and downlink interleaved interference. As far as the base station is concerned, both data transmission and data reception need to be performed at a specific moment, and the difficulty of realizing base station products has also increased.

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