Cell search method and device of multicast communication system

A communication system and cell search technology, applied in wireless communication, access restriction, electrical components, etc., can solve problems such as UE camping failure

Inactive Publication Date: 2012-12-26
POTEVIO INFORMATION TECH
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Problems solved by technology

[0004] For this kind of multicast communication system, if the cell search is still carried out according to the provisions of the existing 3GPP protocol, it will cause the user terminal UE to fail when the signal strength is not the best because only a specific cluster is searched during the cell search. Cluster camping, or make the UE fail to camp on the cell

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  • Cell search method and device of multicast communication system
  • Cell search method and device of multicast communication system
  • Cell search method and device of multicast communication system

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Embodiment Construction

[0032] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples.

[0033] The present invention mainly aims at the characteristics of the multicast communication system, and enables the UE to search all the clusters in the cell instead of only searching for a specific cluster, so that the UE can reside in the cluster with the best signal strength in the cell.

[0034] figure 1 It is a flowchart of a cell search method in a multicast communication system according to an embodiment of the present invention, such as figure 1 As shown, the method includes the following steps:

[0035] Step 101, measure the broadcast signal reference signal received power RSRP of all clusters in the cell;

[0036] Step 102, selecting an optimal cluster whose difference between the broadcast signal RSRP and all other broadcast signal RSRPs...

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Abstract

The embodiment of the invention discloses a cell search method of a multicast communication system, which comprises the following steps that RSRP (Reference Signal Receiving Power) of broadcast signals of all clusters in a cell is measured; an optimal cluster is selected from the measurement result to be determined as an access cluster for access, and the difference between the RSRP of a broadcast signal of the optimal cluster and the RSRP of other broadcast signals is greater than a preset threshold; and if no difference between the RSRP of the broadcast signal and the RSRP of other broadcast signals is greater than the preset threshold, one cluster is randomly selected to be determined as the access cluster for access. The invention further discloses a cell search device of the multicast communication system. According to the method and the device, UE (User Equipment) is used for searching all of the clusters instead of searching a special cluster in the cell, so that the UE can be resided in the cluster with the best signal intensity in the cell.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a cell search method and device of a multicast communication system. Background technique [0002] In the current 3G system or Long Term Evolution LTE / LTE-A system that follows 3GPP, for multi-carrier cells, only synchronization channels and broadcast channels are set on the main carrier or some specific carriers. Therefore, in the existing 3GPP protocol, cell search only searches The synchronization channel and broadcast channel of the main carrier or some specific carriers can only be accessed when the signal strength of the main carrier or specific carriers meets the conditions. [0003] However, for communication systems with relatively high frequency band discreteness such as the national grid communication system, in order to improve spectrum utilization, relatively continuous spectrum (called clusters or carriers) is used as a unit, and each cluster is set w...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W48/16
Inventor 陈永冯世英
Owner POTEVIO INFORMATION TECH
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