Orthogonal frequency division multi-address access system and its device, transmission method and terminal

Abstract

The invention relates to the field of wireless communication, and discloses an orthogonal frequency division multiple access system and its equipment, a transmission method and a terminal, so that the forward transmission function of the system in the resource channel multiplexing mode can be realized. In the present invention, the resource channel type information is added on the basis of the existing control channel, and this information enables the terminal to know exactly the resource channel type it uses. The resource channel type information can be transmitted in an independent field, or the resource channel type information can be indicated in the Block type field, or a bit can be added in the Channel ID field to indicate the resource channel type information.

Description

technical field [0001] The present invention relates to the field of wireless communication, and in particular, to an Orthogonal Frequency Division Multiple Access (Orthogonal Frequency Multiple Access, "OFDMA" for short) technology. Background technique [0002] In recent years, a multi-carrier transmission technology represented by Orthogonal Frequency Division Multiplexing ("OFDM") has attracted widespread attention. Multi-carrier transmission breaks the data stream into several independent sub-data streams, each of which will have a much lower bit rate. Using the low-rate multi-state symbols formed by such a low bit rate to modulate the corresponding sub-carriers, a transmission system in which multiple low-rate symbols are sent in parallel is formed. By allocating different subcarriers to different terminals, OFDM multiple access, ie OFDMA, can be implemented. [0003] As a multi-carrier digital modulation technology, OFDM encodes data and transmits it in the frequenc...

AI Technical Summary

Problems solved by technology

[0015] In practical applications, there are the following problems: when BRCH and DRCH are multiplexed, the terminal cannot map the corresponding physical resources only according to the ChannelID

[0016] The main reason for this situation is that the system assigns physical resources to the terminal by allocating logical resources, such as ChannelID, and the terminal can map corresponding physical resources according to the received ChannelID. However, in multiple resource channels In the case of type multiplexing, due to the different mapping methods used for different resource channel types, when the terminal is not sure whether the resource channel type is BRCH or DRCH, the corresponding physical channel cannot be mapped only by ChannelID

However, in the current resource multiplexing scheme, in each data frame, the information about whether the resource channel type used by the terminal is BRCH or DRCH is not sent to the terminal through specific control information, so the terminal cannot map according to the received ChannelID corresponding physical channel

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