Method for transmitting high-speed data service based on time-division duplex mode

Abstract

The invention relates to a method of transmitting high-speed data based on the time duplex mode. First, the upstream transmitting time segments and downstream transmitting time segments are distributed in a time frame, in the upstream and downstream transmitting time segments the sync time slots for realizing upstream and downstream sync are distributed, as well as the control time slots for transmitting upstream and downstream instructions. And the business slots for transmitting high-speed data are also distributed in the time segments. The different business slots are set up to be different time intervals. When the business data are transmitted, the business slots of diverse period are allocated to users according to practical condition. By this method, the users with high service grade or with good transmitting condition could be provided long-time slots.

Description

technical field [0001] The invention relates to a service transmission method in a wireless communication system adopting the time division duplex (TDD) standard, especially a high-speed data service transmission method. Background technique [0002] In the third-generation wireless communication system currently adopting the TDD standard, such as in the Time Division Synchronous Code Division Multiple Access (TD-SCDMA) system, the transmission of services is usually carried out by the following method: using 96-chip downlink pilot time slots (DwPTS) realizes the synchronization of downlink reception; uses the uplink pilot time slot (UpPTS) added to the 96-chip guard period (GP) to realize the synchronization of uplink reception; finally provides transmission services for the services of different users through service time slots with the same time length . The time slot structure reference used by the above method figure 2 , which describes the time slot structure in a 5m...

AI Technical Summary

Problems solved by technology

Since the existing method does not take advantage of the characteristics of different user data services with different rates and low real-time requirements for data services, and at the same time due to the limitations of channel conditions or other conditions, the transmission of data services will inevitably cause a certain loss of spectrum efficiency. , resulting in that this part of resources cannot be fully utilized, and can only communicate at a very low rate

In addition, the time slot structure adopted by the existing method is independent, and each time slot is provided with a separate pilot frequency

For customers who need high data rate services, they can only ensure the realization of high-speed data communication by allocating a few more time slots, so that the repeated pilot part cannot be used to transmit business data, thus substantially reducing time resources. The waste is not conducive to the realization of high-speed data transmission

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