Transmission method for TD-SCDMA/HSDPA multi-code channel

Abstract

The invention relates to a TD-SCDMA / HSDPA multi-code transmission method. The method comprises: the data frame format during code transmission is changed in the same time slot; when the data transmitted in multiple code channels is framed, only a Midamble code of a certain length is reserved in one code channel of a plurality of channels assigned to users, while the positions of the Midamble code in other code channels can be fill with other data symbols to be transmitted. Under condition of the same resource consumption, the method allows more data to be transmitted, thereby making full use of the prior system resources and improving the performance and capacity of the system.

Description

technical field [0001] The invention relates to the field of communication, in particular to a time slot format for multi-code channel transmission in the same time slot, and a TD-SCDMA / HSDPA multi-code transmission method for greatly improving the transmission efficiency of multi-code channel transmission data. Background technique [0002] With the popularization of mobile phones, the demand for data services of communication users continues to grow. TD-SCDMA / HSDPA can well support asymmetrical services, and is very effective in solving the ever-increasing data service demands of mobile communication users. HSDPA (High Speed ​​Downlink Packet Access) technology is a technology that provides high-speed downlink data services for multiple users, and can satisfy packet services with burst characteristics in the downlink, such as streaming data services and interactive applications. Compared with voice services, data services can tolerate time delay and short-term rate change...

AI Technical Summary

Problems solved by technology

Since the UE only needs the Midamble code on one of the code channels to complete channel estimation, the estimation result can be used to process other code channels allocated to the user in the same frequency point and the same time slot, so when the same time slot When assigning multiple consecutive code channels for multi-code channel transmission, each code channel in the multi-code channel adopts exactly the same time slot format, which does not make full use of system resources, resulting in waste

[0006] Application No. 03109756.1 for the invention patent of "Method for Improving Transmission Rate in Multi-slot CDMA Wireless Communication System", although the method of combining multi-slots can improve data transmission capability, reduce the number of code channels or maximum transmission power transmitted by the terminal, and expand the cell Coverage, reduced power consumption, etc., since the data framing format during multi-code channel transmission is not changed, when multiple consecutive code channels are allocated in the same time slot for multi-code channel transmission, each code channel in the multi-code channel Using exactly the same time slot format does not make full use of system resources, resulting in wasteful disadvantages

Application No. 200510130030.5 for the invention patent "Configuration Method of Channelization Codes for High-Speed ​​Physical Downlink Shared Channel", although it solves the problem of continuity of channelization code configuration of UE's HS-PDSCH, it reduces the complexity of system configuration of HS-PDSCH channelization codes However, since it is a code channel allocation strategy for multi-code channel transmission (in the same time slot or across time slots), has the data framing format during multi-code channel transmission been changed, and multiple consecutive When the code channel performs multi-code channel transmission, each code channel in the multi-code channel adopts exactly the same time slot format, which does not make full use of system resources and causes waste

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