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Scrambling configuration method for multimedia broadcast and multicast service of single carrier frequency network

A technology for multimedia broadcast and multicast services, which is applied in the field of configuration of time slot scrambling code resources occupied by multimedia broadcast and multicast services, can solve the problem of inability to meet application requirements, imperfect MBMS service time slot scrambling code configuration strategies, and cell deletion and reconstruction. It is not very reasonable to meet the application requirements and save system resources.

Inactive Publication Date: 2009-01-21
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the scrambling code used for ordinary services in the original cell changes, it will affect all users in the entire cell. It is reasonable to reconfigure the scrambling code by deleting the cell and then rebuilding the cell; but when the MBMS service ends, it only involves the MBMS of a part of the SFN network. For business users, it is not very reasonable to delete and rebuild the entire cell in order to release the scrambling resources occupied by the MBMS service corresponding time slot of the SFN network
All in all, the existing 3GPP protocol configuration strategies for MBMS service time slot scrambling codes in SFN networks are not perfect and cannot meet actual application requirements.

Method used

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  • Scrambling configuration method for multimedia broadcast and multicast service of single carrier frequency network
  • Scrambling configuration method for multimedia broadcast and multicast service of single carrier frequency network
  • Scrambling configuration method for multimedia broadcast and multicast service of single carrier frequency network

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Experimental program
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Embodiment 1

[0052] refer to figure 2 As shown, it is a flow chart of the scrambling code configuration method according to the first embodiment of the present invention. The present invention completes the configuration and release of MBMS time slot scrambling codes in the SFN mode through the common transmission channel reconfiguration process between RNC and NodeB.

[0053] Generally speaking, this process includes: 1) In the common transport channel reconfiguration request message sent by RNC to Node B, the common cell identity is established, configured and deleted for the timeslot using MBMS service; 2) After receiving the message, Node B , sending a common transport channel reconfiguration response message to the RNC.

[0054] Add the SCCPCH (Secondary Common Control Physical Channel, Secondary Common Transport Channel) corresponding to the MBMS service in the common transport channel reconfiguration request information element, as shown in Table 1. Add the indication information...

Embodiment 2

[0088] In this embodiment, the RNC and the NodeB complete the resource configuration of the public cell ID in the SFN mode through the common transport channel establishment process; complete the resource modification and release of the public cell ID in the SFN mode through the common transport channel reconfiguration process.

[0089] The difference between this embodiment and the preferred embodiment 1 is: the establishment of the public cell identity corresponding to the MBMS service is completed during the establishment of the common transmission channel. In preferred embodiment 1, after the common transport channel is established, the establishment of the public cell identity corresponding to the MBMS service is completed through the common transport channel reconfiguration process. In this way, in Embodiment 2, the time slot scrambling code configuration is performed when the SCCPCH occupied by the MBMS service is established, and there is no need to initiate a common tr...

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Abstract

The present invention discloses a scramble configuration method of multimedia broadcast multicast business of single carrier frequency network, which is used for configuring the scrambling information in the identification of public districts which correspond to the MBMS business. The method comprises the following steps: (1) when the MBMS business begins, a radio network controller RNC transmitsthe request information of reconfiguration of public transmission channels to the node NodeB; the request information of reconfiguration comprises the scrambling information of the time slot corresponding to the MBMS business; (2) after the node NodeB receives the request information of reconfiguration, the identification of the public districts corresponding to the MBMS business is established according to the scrambling information; and the response information of reconfiguration of the public transmission channels is transmitted to the RNC. The scramble configuration method is more reasonable, and can better satisfy the application requirements.

Description

technical field [0001] The invention relates to a method for configuring scrambling code resources of a Time Division Synchronous Code Division Multiple Access (TD-SCDMA) system in the field of mobile communications, in particular to a time slot occupied by a Multimedia Broadcast Multicast Service (MBMS) of a Single Carrier Frequency Network (SFN) A method for configuring scrambling code resources. Background technique [0002] The scrambling code is used to distinguish signals from different sources (that is, different transmitting ends, which can be understood as cells and base stations), and does not change the bandwidth of the spread spectrum signal. There are 128 scrambling codes in the TD-SCDMA system, and each cell is configured with 4 scrambling codes, but generally only one of them is used, and the remaining three are reserved for different operators. The scrambling code of the TD-SCDMA system corresponds to the training sequence (Midamble) one by one. The receiver...

Claims

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Application Information

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IPC IPC(8): H04J13/00H04J3/17H04W28/16
Inventor 赵静马子江马志锋
Owner ZTE CORP
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