OTDOA measurement, and positioning assist data transmission method, system and apparatus

An OTDOA and auxiliary data technology, applied in electrical components, wireless communication, etc., can solve problems such as OTDOA positioning failure, and achieve the effects of saving related signaling interactions, simplifying complexity, and ensuring sending and receiving data
CN102724699AInactive Publication Date: 2012-10-10CHINA ACAD OF TELECOMM TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA ACAD OF TELECOMM TECH
Publication Date
2012-10-10
Estimated Expiration
Not applicable · inactive patent

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Abstract

The embodiment of the invention discloses OTDOA (Observed Time Difference of Arrival) measurement, and a positioning assist data transmission method, a positioning assist data transmission system and a positioning assist data transmission apparatus, pertaining to the technical field of wireless communication, so as to solve the problem of OTDOA positioning failure caused by UE inability to perform the OTDOA measurement. According to the invention, a terminal determines residence communities which can detect signals by themselves, and on the basis of the determination result, information of the residence communities which can detect the signal by themselves is transmitted to a positioning server. The positioning server, on the basis of the residence community information, selects an OTDOA measurement residence community for the terminal, and transmits the OTDOA assist data which comprises the OTDOA measurement residence community information to the terminal. The terminal carries out the OTDOA measurement on the basis of the OTDOA assist data. According to the invention, the possibility of the OTDOA positioning failure can be reduced.
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Description

technical field

[0001] The present invention relates to the field of wireless communication, in particular to an OTDOA measurement and positioning auxiliary data transmission method, system and device. Background technique

[0002] In the Universal Mobile Telecommunications System (UMTS), the observed time difference (OTDOA) method is mainly based on the measurement results of the system observed time difference type 2 (SFN-SFN observed time difference type 2), and can refer to the first path type of each cell ( First Path Type), downlink pilot time slot received signal strength (RSS on DwPTS) and terminal related speed (UE Related Speed) measurement results to estimate the location of the terminal (UE). These measurement results can be used to effectively estimate the location of the UE in combination with the results of the actual drive test and network planning. The measurement accuracy of this method depends on the number of measurable cells, measurement cycle, measurem...

Claims

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