Data receiving and transmitting method, device and system applied to MBMS service

Abstract

The invention discloses a data receiving and transmitting method, a transceiver and a system applied to an MBMS service. The data transmitting method applied to a broadcast / multicast MBMS service comprises the following steps that: all cells sending the same MBMS service data are divided into three groups; a base station of each group of the cells performs constellation rotation of a modulation symbol of the MBMS service data to be transmitted and performs space-time coding on the data after the constellation rotation according to a branch in an MDC model, and the branches used by the base stations of the same group of the cells are same and the branches used by the base stations of different groups of the cells are different; the base station of each group of the cells modulates the dataafter the space-time coding into radio-frequency signals and transmits the radio-frequency signals. The data receiving and transmitting method, the transceiver and the system can improve the space diversity gain and the coding gain of the signals.

Description

technical field [0001] The present invention relates to the MBMS technology in the communication field, in particular to a data sending method, a data receiving method, a transmitting device, a receiving device, and a system applied to MBMS services. Background technique [0002] MBMS (Multimedia Broadcast / Multimedia Service, multimedia broadcast / multicast service, or multimedia broadcast / multicast service) aims to provide a flexible and effective mechanism for broadcast and multicast services. Multiple base stations (Base Station, BS) A user equipment (UE) sends data covering the same information, and the same UE can receive signals from its own cell and a neighboring cell BS. If the BSs in all cells send the same signal, such as the MBMSFN scheme, the UE receives an enhanced signal-to-noise ratio, but the system cannot effectively obtain space diversity gain. If the cells whose broadcast information can be received by the same UE are grouped, each group processes the broa...

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Problems solved by technology

[0026] Embodiments of the present invention provide a data sending method, a receiving method, and a data sending and receiving system applied to MBMS services, to solve the problem that the transmit diversity schemes in the prior art cannot obtain complete space diversity gain and coding gain or need to be in a specific The problem that the full space diversity gain can only be obtained under the condition of

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