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Transmission and receiving method for multi-carrier time slot multimedia broadcast and multicast service

A technology for multimedia broadcasting and multicast services, applied in the direction of broadcasting service distribution, etc., can solve the problems of discontinuous or intermittent service reception, increase of redundant signals, co-channel interference in cells, etc., to avoid data interference, reduce complexity, improve quality effect

Inactive Publication Date: 2013-03-27
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Generally, in a TDD system, if the point-to-multipoint transmission (PtM) mode MBMS data is transmitted in the same-frequency network, and each cell transmits different MBMS data according to the traditional mobile communication system, there will be very Severe co-channel interference causes the UE to fail to receive MBMS signals correctly
In this case, the quality of MBMS signal reception cannot be improved even if the transmit power of the cell is increased
[0005] In addition, in the TDD system, each cell transmits different MBMS data, which will cause service handover between cells. Since the cell coverage of the mobile communication system is much smaller than the coverage area of ​​general wireless TV, when the user equipment ( When the UE) moves, the handover of the cell will be relatively frequent, and the number of handovers between services will also increase accordingly, which will lead to an increase in redundant signals or discontinuous or intermittent service reception
[0006] To sum up, in a TDD system, it is ideal to provide a transmission and reception method that can avoid inter-cell MBMS service interference and provide continuous and high-quality multimedia broadcast services. However, this technology has not yet been realized

Method used

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  • Transmission and receiving method for multi-carrier time slot multimedia broadcast and multicast service
  • Transmission and receiving method for multi-carrier time slot multimedia broadcast and multicast service
  • Transmission and receiving method for multi-carrier time slot multimedia broadcast and multicast service

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Embodiment 1

[0026] In this embodiment, a method for transmitting MBMS with multi-carrier time slots is provided.

[0027] In this embodiment, preferably, according to actual service coverage requirements, MBMS is assigned a service number, and an area number is assigned to a cell involved in the MBMS service, and the relevant CN, RNC, and Node B correspond to the area number; Node B. The RNC allocates specific resources such as time slots, frequency points, code division channels, scrambling codes, and training sequence codes (midamble codes) according to actual physical resource requirements. When there is an MBMS service to be transmitted, the CN assigns the MBMS service with the corresponding service number to the RNC corresponding to the same area number, and the RNC then allocates specific MBMS service content to the Node B corresponding to the same area number, and finally the Node B assigns the MBMS service content to the Node B corresponding to the same area number. Send it to the...

Embodiment 2

[0041] In this embodiment, a multi-carrier time slot MBMS receiving method is provided for receiving MBMS transmitted by using the MBMS transmitting method of the previous embodiment.

[0042] Such as image 3 As shown, the multi-carrier timeslot MBMS receiving method according to this embodiment includes the following steps: step S302, perform channel estimation on each effective cell respectively, and obtain the channel impulse response of each effective cell; step S304, generate each effective cell according to the channel impulse response The system matrix of the cell; step S306, combining the system matrices generated in step S304 to obtain a composite system matrix; and step S308, performing joint monitoring on the composite system matrix to obtain the original data of MBMS.

[0043] The following will refer to Figure 4 The processing procedure of the specific application example of the method according to the embodiment of the present invention is described in detail....

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Abstract

The invention discloses an emission method of MBMS in a TDD system. The emission method comprises the steps of step S102 of respectively distributing service numbers for each MBMS, and respectively distributing area numbers corresponding to the service numbers for cells in overlay areas of the MBMS; step S104 of distributing physical resources occupied by each MBMS according to the plan of the cells; step S106 of utilizing a wireless network controller in the overlay areas to distribute the same MBMS for the cells provided with same area numbers, and causing the cells to use the physical resources distributed in step S104 to carry the MBMS; and step S108 of carrying out physical layer processing to the obtained service data of the MBMS by the cells distributed with the MBMS, and obtaining the data to be emitted. In addition, the invention also discloses a receiving method of the MBMS in the TDD system.

Description

technical field [0001] The present invention relates to the communication field, and in particular, relates to a method for transmitting and receiving multi-carrier time slot multimedia broadcast multicast services, which is especially suitable for Time Division Duplex (Time Division Duplex, TDD) systems. Background technique [0002] Multimedia Broadcast / Multicast Service (MBMS) is a high-speed one-way service transmitted in the form of broadcast or multicast. It can effectively transmit high-speed multimedia data to multiple users within a cell range at the same time. MBMS utilizes the resources of the mobile communication network to transmit multimedia broadcast signals, so that it only needs to add corresponding service functions to the established mobile communication network to provide high-quality multimedia services, thereby avoiding redundant construction. [0003] MBMS requires that users can ideally receive and transmit signals anywhere in a cell. In a TDD wirele...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/06
Inventor 史凡曾召华
Owner ZTE CORP
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