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Collocation method, data transmission method and device of multimedia broadcast and multicast service

A technology for multimedia broadcasting and multicasting services, applied in the field of data transmission methods and devices for multimedia broadcasting and multicasting services, capable of solving problems such as small combining gain, achieving the effect of improving link performance and increasing combining gain

Inactive Publication Date: 2009-11-11
ZTE CORP
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] In view of the problem that the combined gain obtained by the current wireless frame structure carrying unicast services and multicast services in the related art is relatively small, the present invention is proposed. For this reason, the main purpose of the present invention is to provide a multimedia broadcast multicast Service configuration method, multimedia broadcast multicast service data transmission method and device, so as to solve the above problems

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  • Collocation method, data transmission method and device of multimedia broadcast and multicast service
  • Collocation method, data transmission method and device of multimedia broadcast and multicast service
  • Collocation method, data transmission method and device of multimedia broadcast and multicast service

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Embodiment 1

[0029] According to an embodiment of the present invention, a method for configuring an MBMS service is provided.

[0030] First of all, in the frame, when assigning a subframe in the radio frame as a multicast service subframe, the subframe already occupied by the system information cannot be occupied, for example: the first subframe in the general radio frame is used to transmit Synchronization information, so the first subframe cannot be configured as a multicast service subframe.

[0031] In the MBMS service configuration method according to the embodiment of the present invention: different subcarrier intervals are configured for the unicast service subframe and the multicast service subframe in the radio frame.

[0032] Through the technical solution provided by the embodiment of the present invention, the combining gain of the overlapping part of the adjacent cells is increased, and the link performance of the cell edge users is improved.

[0033] Preferably, the subca...

Embodiment 2

[0055] Figure 4 It is a detailed processing flowchart of the data transmission method of the MBMS service according to the method embodiment of the present invention, as Figure 4 As shown, the method includes the following steps:

[0056] In step S402, the sending end performs cyclic redundancy check (Cyclic Redundancy Check, CRC for short), channel coding, and IFFT on the data to be transmitted, inserts the CP, and sends it to the terminal.

[0057] Different from the unicast service, the number of IFFT points here is specified corresponding to the subcarrier interval of the multicast service subframe, and the length of the inserted CP is also the CP length corresponding to the multicast service subframe.

[0058] Step S404, the receiving end learns the specific location of the MBMS service subframe from the control information or agreed conditions, obtains the corresponding MBMS data from the indicated subframe, performs FFT transformation of corresponding points, and the...

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Abstract

The invention provides a collocation method of multimedia broadcast and multicast service. The collocation method which is based on an orthogonal frequency division multiple access system comprises the following steps of collocating different subcarrier distances corresponding to a unicast service subframe and a multicast service subframe in a radio frame. The embodiment of the invention also provides a data transmission method and a device of the multimedia broadcast and multicast service. By adopting the collocating method, the data transmission method and the device, the combined gain is increased, and the link performance of cell-edge users is improved.

Description

technical field [0001] The invention relates to the communication field, in particular to a method for configuring a multimedia broadcast multicast service based on an orthogonal frequency division multiple access system, a data transmission method and a device for a multimedia broadcast multicast service. Background technique [0002] With the rapid development of the network, a large number of multimedia services have emerged. At the same time, a variety of high-bandwidth multimedia services have emerged, such as video conferences, TV broadcasts, video on demand, advertisements, online education, and interactive games. At the same time, with the popularization of large-screen multifunctional mobile terminals (for example, mobile phones), mobile data services are more and more widely used, and people's demand for mobile communications is no longer satisfied with services such as telephone calls, messages, and mobile Internet access. [0003] The rapid development of mobile ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/06H04W72/04H04L27/26
Inventor 苟伟王斌
Owner ZTE CORP
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