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Signal transceiving method in a broadcast multicast system and equipment

A broadcast multicast and broadcast multicast service technology, applied in the field of wireless broadcast multicast, can solve problems such as loss of synchronization, AGC gain error saturation, saturation distortion, etc., to achieve the effect of convenient implementation, lightening of transmission tasks, and saving power

Active Publication Date: 2009-09-16
SPREADTRUM COMM (SHANGHAI) CO LTD
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Problems solved by technology

[0025] The purpose of the present invention is to provide a method and device for transmitting and receiving signals in a broadcast multicast system, which can solve the problem of incorrect saturation of the AGC gain of the UE, loss of synchronization, and saturation distortion when the signal is restored due to the absence of broadcast and multicast service data delivery and other technical issues

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  • Signal transceiving method in a broadcast multicast system and equipment
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  • Signal transceiving method in a broadcast multicast system and equipment

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Embodiment Construction

[0053] In order to make the objectives, technical solutions and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0054] The technical solutions of the present invention are described below by taking a TD-MBMS system as an example, but these technical solutions are not limited to TD-MBMS, and can also be used in other wireless broadcast multicast systems, such as Wideband Code Division Multiple Access (Wideband Code Division Multiple Access). The MBMS system in the Multiple Access (“WCDMA”) network, the Multicast Broadcast Service (Multicast Broadcast Service, “MBS”) system in the Worldwide Interoperability for Microwave Access (“WiMAX”) network, etc.

[0055] The first embodiment of the present invention relates to a signal transmission method in a broadcast multicast system, image 3 The processing flow of the NodeB when the MBMS service data is discon...

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Abstract

The invention relates to the field of wireless communication, discloses a signal transceiving method in a broadcast multicast system and equipment and is capable of solving the problems of AGC gain error saturation of UE and desynchronizing caused by no broadcast multicast service data issuing, as well as saturation distortion caused in signal recovery, etc. In the invention, when the broadcast multicast service data is not issued, an SB signal is transmitted through FACH. In TTI without issued MBMS service data, the MBMS time slot of each radio frame transmits the SB signal, or the SB signal is transmitted only at the MBMS service time slot of a first radio frame. Under the condition that no MBMS service data is issued in a plurality of continuous TTIs, the SB signal can be transmitted only in the first one of the continuous TTIs. And all NodeBs belonging to one single frequency network can adopt the same rule to transmit the SB signal.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to the technology of wireless broadcast and multicast. Background technique [0002] Mobile TV is considered to be one of the most promising multimedia services in the third generation mobile communication (The Third Generation, referred to as "3G") era. It integrates many media features such as multimedia, real-time, interaction, etc. obtain services. At present, the research of this service is very active, and there are more than ten kinds of relevant transmission standards, which can be divided into three categories, which are based on terrestrial broadcasting, satellite broadcasting and mobile communication technology. [0003] Among them, the technology based on mobile network was first realized by means of mobile streaming media. Although the demand is met to a certain extent, it is not satisfactory in terms of bandwidth, effect, number of users, cost, etc. Ther...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/005H04L1/00
Inventor 刘志东陈国础张治师延山
Owner SPREADTRUM COMM (SHANGHAI) CO LTD
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