Methods and devices for transmitting and receiving multimedia broadcast/multicast services
A technology for multimedia broadcasting and multicasting services, which is applied in the fields of receiving and sending multimedia broadcasting and multicasting services, and can solve problems such as the inability to make full use of time slot resources.
Active Publication Date: 2011-07-06
DATANG MOBILE COMM EQUIP CO LTD
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Problems solved by technology
[0008] The invention provides a method for sending and receiving multimedia broadcast and multicast services, which is used to solve the problem that time slot resources cannot be reasonably and fully utilized in the prior art
[0009] Correspondingly, the present invention also provides equipment for sending and receiving multimedia broadcast multicast services, to solve the problem that time slot resources cannot be reasonably and fully utilized in the prior art
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[0061] The present invention provides multimedia broadcast multicast service CDM sending and receiving methods and equipment. The basic idea is: divide the time slot used for carrying MBMS service into multiple code channels, and use it to carry multiple MBMS with relatively low data rate to be sent. services, so that one time slot can transmit multiple MBMS services with lower data rates at the same time, making reasonable and full use of time slot resources.
[0062] Such as Figure 4 As shown, in order to realize the flow chart of the multimedia broadcast multicast service CDM sending method, including steps:
[0063] S101: Set a time slot in the TDD system to send MBMS services based on the MBSFN mode, and according to the MBMS service center requesting the TDD system to simultaneously send the number of MBMS services whose data rate is less than a predetermined rate (for example, 192kbps), set the Defined time slots are used to divide code channels to carry MBMS services...
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The invention discloses a method for transmitting multimedia broadcast / multicast services. The method for transmitting the multimedia broadcast / multicast services comprises the following steps: a time-division duplex system is used for allocating a repeated dispatching interval, as well as a time slot used for bearing the multimedia broadcast / multicast service (MBMS) at the repeated dispatching interval for all multimedia broadcast / multicast services to be transmitted, so as to bear all the multimedia broadcast / multicast services to be transmitted; code channels are divided on the time slots used for bearing the multimedia broadcast / multicast services at the allocated dispatching intervals; and all the multimedia broadcast / multicast services to be transmitted are born on the corresponding divided code channels, and the multimedia broadcast / multicast service (MBMS) born on each code channel in the time slot of the same multimedia broadcast / multicast service (MBMS) is modulated on the basis of the same scrambling ID, and then is transmitted to user equipment based on the transmission mode of a multimedia broadcast / multicast service (MBMS) single frequency network. Correspondingly, the invention also discloses a method for receiving multimedia broadcast / multicast services as well as a device for transmitting the multimedia broadcast / multicast services and a device for receiving the multimedia broadcast / multicast services. By adopting the methods and the devices, the time slot resources used for bearing the multimedia broadcast / multicast service can be utilized more sufficiently.
Description
[0001] The application of the present invention is a divisional application of the invention application with the filing date of July 23, 2007, the application number of 200710119409.5, and the invention name of "Multimedia Broadcast Multicast Service Sending and Receiving Method and Equipment". technical field [0002] The invention relates to the field of mobile communication, in particular to a method and device for sending and receiving multimedia broadcast and multicast services. Background technique [0003] With the rapid development of mobile communications and interconnection networks, a large number of mobile multimedia services have emerged, some of which require multiple user equipment (UE, User Equipment) to receive the same data at the same time, such as TV broadcasting, video conferencing, video On-demand, online education, interactive games, etc. Compared with general data, these mobile multimedia services have the characteristics of large data volume and lon...
Claims
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IPC IPC(8): H04W4/06H04W72/12
Inventor 丁昱
Owner DATANG MOBILE COMM EQUIP CO LTD