Tdd intra frequency handover measurement enhancement

A technology for measurement reports and measurement control messages, applied in electrical components, wireless communications, etc., to solve problems such as inefficient system resources and reduced call quality

Inactive Publication Date: 2011-11-23
ERICSSON (CHINA) COMMUNICATION COMPANY LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is undesirable as call quality may degrade and the process is an inefficient use of system resources

Method used

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  • Tdd intra frequency handover measurement enhancement
  • Tdd intra frequency handover measurement enhancement
  • Tdd intra frequency handover measurement enhancement

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Embodiment Construction

[0027] For the convenience of illustration rather than limitation, specific details such as specific architecture, interfaces, technologies, etc. are provided in the following description for a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail. exist figure 1 The invention is described in the context of the illustrated non-limiting example of Universal Mobile Telecommunications (UMTS).

[0028] Figure 3B is a diagrammatic view showing the handover measurement mechanism employed in the prior art. After establishing the Radio Access Bearer (RAB) to the UE, the Radio Network Controller (RNC) sends a "Measurement Control" message to the ...

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Abstract

A method for performing handover measurement may comprise steps of calculating received signal code powers (RSCPs) of a serving cell and a target cell; determining if the RSCPs meet a trigger criteria; and comparing the RSCP of the serving cell with an absolute threshold. By comparing the RSCP of the serving cell with the absolute threshold, the UE may evaluate the communication quality with the current serving cell, making it possible to report to the RNC when the communication condition degrades rapidly without waiting for a fixed period as in the prior art.

Description

technical field [0001] In general, the present invention relates to switching between frequency bands in a cellular radio communication system. In particular but not exclusively, the invention relates to TDD intra-frequency handover between different cells in 3G (Third Generation) communication systems, such as TD-SCDMA. Background technique [0002] Such as figure 1 The illustrated Universal Mobile Telecommunications System (UMTS) network architecture includes a Core Network (CN), a UMTS Terrestrial Radio Access Network (UTRAN) and User Equipment (UE). There are two general interfaces in the system: the Iu interface between UTRAN and the core network and the radio interface Uu between UTRAN and UE. The UTRAN consists of several Radio Network Subsystems (RNS) interconnected by the Iur interface. This interconnection allows core network independent procedures between different RNSs. The RNS consists of a Radio Network Controller (RNC) and several base stations (Node Bs). ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W36/00
CPCH04W36/0083H04W36/0085
Inventor 董琳毛杰田锐
Owner ERICSSON (CHINA) COMMUNICATION COMPANY LTD
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