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Interference code allocation method for multimedia broadcast and multicast service in time division duplex system

A technology of time division duplex system and multimedia broadcasting, which is applied in the field of communication and can solve problems such as not being realized

Inactive Publication Date: 2008-09-10
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] It can be seen from the above description that because there are two implementations in TDD MBMS, it is undoubtedly ideal to change the configuration method of the scrambling code according to the difference in service category and transmission method. However, this technology has not been implemented yet

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  • Interference code allocation method for multimedia broadcast and multicast service in time division duplex system
  • Interference code allocation method for multimedia broadcast and multicast service in time division duplex system

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Embodiment Construction

[0017] The embodiment of the present invention provides a method for allocating scrambling codes of Multimedia Broadcast Multicast Service (MBMS) in Time Division Duplex (TDD) system.

[0018] The embodiment of the present invention will be described in detail below by taking the PtM (Point-to-Multipoint Transmission) mode MBMS service in the TD-SCDMA communication system as an example and referring to the accompanying drawings. Wherein, in the TD-SCDMA system, one control network (CN) controls multiple RNCs, one RNC controls multiple Node Bs, and one Node B can include multiple cells.

[0019] Such as figure 1 As shown, the MBMS scrambling code allocation method in the TDD system according to the embodiment of the present invention includes the following steps: step S102, respectively assigning service numbers to each MBMS, and respectively assigning service numbers corresponding to the service numbers to the cells in the coverage area of ​​each MBMS area number; and step S1...

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Abstract

The invention discloses a distribution method of the scrambling codes of MBMS in a TDD system. The distribution method comprises the steps of S102 that service codes are respectively distributed for each MBMS and area codes corresponding to the service codes are respectively distributed for cells in the overlay area of the MBMS; and S104 that the scrambling codes are distributed according to the area codes of the cells and the emission type of the MBMS. By adopting the method for correctly and reasonably distributing the scrambling codes of the MBMS, the MBMS of PtM mode with different emission methods are effectively and flexibly supported in a TD-SCMDA system.

Description

technical field [0001] The present invention relates to the field of communications, and in particular, to a method for allocating scrambling codes for multimedia broadcast and multicast services in a Time Division Duplex (TDD) system. 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 at the same time. MBMS utilizes the resources of the mobile communication network to transmit multimedia broadcasting signals, so that service functions can only be added to the existing mobile communication network, thereby avoiding redundant construction. [0003] Generally, there are two methods for implementing MBMS in a TDD system. One method is the single frequency network (SFN) method, which is to transmit an MBMS service in a group of cells, and each cell in the group uses the same scrambling ...

Claims

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Application Information

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IPC IPC(8): H04Q7/22H04L1/00H04B7/26
Inventor 史凡曾召华
Owner ZTE CORP
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