Networking method for multimedia broadcasting and multicast service in N frequency point cell

Abstract

The invention relates to a method of network organizing for an N-frequency point cell to provide multi-media broadcasting and multicast service. The method comprises the steps as follows: (1) a plurality of frequency points in the N-frequency point cell are designated to be specially used for bearing the MBMS service; (b) a frequency point is selected by each cell from a plurality of designated frequency points in step (a) in cells of a continuous overlay area to be used for bearing the multi-media broadcasting and multicast service MBMS to ensure that the carrier frequency of each adjacent cell and used for bearing the MBMS service is in a different frequency point; (c) each cell uses a plurality of frequency points designated in step (a) to transmit the MBMS service which is borne on the frequency point chosen in step (b). The method of the invention can basically guarantee that the carrier frequency bearing the MBMS service can not produce any co-channel interference to the carrier frequency bearing other services and also guarantee the power for transmitting the MBMS service under the circumstance that no intelligent antenna is used for molding and gain, the method also provides simple implementation that the existing network can provide the MBMS service by the small-scale modification of software.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a networking method for providing multimedia broadcast and multicast services (MBMS: MultimediaBroadcast / Multicast Service) in an N-frequency point cell in a Time Division Synchronous Code Division Multiple Access (TD-SCDMA) system. Background technique [0002] In order to meet the growing demand of the mobile communication market and improve the system capacity coverage in hotspot areas, the concept of N-frequency cell in TD-SCDMA system is to combine multiple cells (each carrier frequency is a cell) in the same geographic coverage area. , share the same set of common channel resources, thereby forming an N-frequency cell. The application of N-frequency cells in actual networking not only reduces the complexity of radio resource management, but also configures the main carrier frequencies of adjacent cells at different frequency points, which can not only effectively reduc...

AI Technical Summary

Problems solved by technology

Since the smart antenna cannot be used to perform beamforming on the user equipment (UE) on the common channel, there is no forming gain, and the MBMS service transmitted on the common channel cannot guarantee the quality of reception due to the limited power

Similarly, due to the use of omnidirectional antennas, strong co-channel interference will be generated to other surrounding cells

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