Method, apparatus and system for configuring transmission time interval for supporting high speed mobile transmission

Abstract

The invention discloses a transmission time interval (TTI) configuration method supporting high speed mobile transmission. The method comprises the following steps: setting at least one type of the TTI, wherein, the length of each type of the TTI is an integral multiple of that of a subframe; selecting a TTI corresponding to a mobile station from the set TTI, determining the amount of pilot frequency symbols in the TTI to get the TTI information of the mobile station, and then sending the TTI information to the mobile station. The invention further discloses a TTI configuration device supporting the high speed mobile transmission and a system thereof. The scheme of the invention can effectively ensure the reliability of information transmission in the case that the mobile station moves at a high speed.

Description

technical field [0001] The present invention relates to a time division-synchronous code division multiple access (TD-SCDMA) long-term evolution (LTE) system, in particular to a transmission time interval (TTI) configuration method supporting high-speed mobile transmission in a TD-SCDMA LTE system, devices and systems. Background technique [0002] The third generation mobile communication system (3G) adopts the code division multiple access (CDMA) mode, which can support multimedia services, and the system will have higher competitiveness in the next few years. However, in order to ensure that such competitiveness is maintained for a longer period of time, 3GPP has initiated a research project on Long Term Evolution (LTE) of 3G radio interface technology. Important parts of this research project include: reducing latency, increasing user data rates, improving system capacity and coverage, and reducing operator costs. [0003] TD-SCDMA is the only standard among the three ...

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Problems solved by technology

Then, this configuration method of adding pilot symbols in one TTI requires a large pilot symbol overhead, and the service information that can be transmitted in each TTI will be correspondingly reduced, so that the transmission time of a service is longer. That is, this TTI allocation method can only support services that require low mobile speed; and due to the long service transmission time, users will conclude that the network service quality is poor

[0009] In addition, in this way of determining whether each TTI needs to contain multiple pilot symbols, the base station needs to detect the moving speed of the mobile station in real time, which will make the control operation of the base station for the channel estimation of the mobile station very complicated

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