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Variable length PRACH message structure and its realizing method

A technology of message structure and implementation method, applied in the communication between multiple stations, radio/induction link selection arrangement, selection device and other directions, can solve the problem that the maximum length of PRACH is small, fast access is not considered, and transmission cannot be satisfied. More information requirements and other issues, to achieve the effect of reducing call setup delay or connection delay and avoiding waste

Inactive Publication Date: 2007-03-28
SPREADTRUM COMM (SHANGHAI) CO LTD
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Problems solved by technology

[0020] The purpose of the present invention is to provide a variable-length PRACH message structure and its implementation method, which mainly solves the problem that fast access is not considered when the existing system standards are established, so that the maximum length of the PRACH is small and cannot meet the requirements of transmission. The technical problem of more information requirements, and the variable PRACH message length adapts to different business needs

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  • Variable length PRACH message structure and its realizing method
  • Variable length PRACH message structure and its realizing method
  • Variable length PRACH message structure and its realizing method

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Embodiment Construction

[0051] The present invention provides a variable-length PRACH message structure, which enables the terminal to notify the network of different message length information adopted by the network according to different service requirements. In the WCDMA system, the length of the PRACH message part can be extended from 1 frame to N (N≥1) frames; the length of each frame is 10 ms or 20 ms. In the TD-SCDMA system, the length of the PRACH message part can be extended from 1 subframe to N (N≥1) subframes; the length of each subframe is 5ms.

[0052] The realization method of the PRACH message structure of this variable length, its steps are as follows:

[0053] (1) The number of message bits N in the maximum transmission time interval (Transmission Time Interval, referred to as TTI) of the allowed PRACH message is determined according to the service and coverage of the cell max ;

[0054] (2) Broadcast the settings in (1) in all cells through the system broadcast message;

[0055] (3...

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Abstract

The length-changeable PRACH message structure utilizes the different length of PARCH message section according to the different business requirement. When the system standard was established, the fast access situation was not considered so that the max PARCH length is limited and is not meet the requirement of transferring more message. This length-changeable PARCH message structure and its realization method has solved this technique problem and the length-changeable PRACH frame structure can adapt different business requirement.

Description

technical field [0001] The present invention relates to the call establishment method and process of the third generation mobile communication system (3G, 3rd Generation), especially a variable-length PRACH message structure and its implementation method, which adopts variable PRACH message length to adapt to different service requirements . Background technique [0002] In a 3G system, taking a mobile station (User Equipment, UE for short) calling a mobile station (UE) as an example, the call establishment process is shown in FIG. 1 and FIG. 2 . The figure includes several main functional entities in the 3G system: user end (UE), base station (NodeB), radio network controller (RadioNetworks Controller, RNC for short) and core network (Core Networks for short: CN). In addition, the In the diagram, it is assumed that a user initiates a PoC (Push to talk Over Cellular, Push to Talk Over Cellular) service in the Packet Service (Packet Service for short: PS) domain, and a radio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/26H04Q7/38
Inventor 吴涛吕玲
Owner SPREADTRUM COMM (SHANGHAI) CO LTD
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