Switching method for mobile communication system

A technology of mobile communication system and handover command, which is applied in communication between multiple stations, selection device, radio/inductive link selection arrangement, etc., can solve problems such as time delay, irrationality, and influence on success rate, and achieve shortening the effect of time

Inactive Publication Date: 2009-02-18
江苏久泰电缆有限公司
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Problems solved by technology

[0013] To sum up, in a network that schedules synchronous uplink and downlink wireless resources according to the shared channel method, in the handover process of the prior art, the following two situations may introduce time delay: 1. During the random access process between the terminal and the target base station , after the terminal receives the handover command, it may not be a

Method used

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  • Switching method for mobile communication system
  • Switching method for mobile communication system
  • Switching method for mobile communication system

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Embodiment Construction

[0034] The present invention provides a handover method in a mobile communication system, which is suitable for a synchronous system, and its core idea is: in the handover process, the target base station sends the information of the uplink physical common control channel on the target base station side to the source base station through a handover command , and then forwarded to the terminal by the source base station. After the terminal receives the handover command, after uplink synchronization and acquisition of the target base station scheduling, it can immediately perform uplink and downlink data transmission with the target base station, and the terminal can directly use the physical uplink public control channel allocated by the target base station ( The channel quality indication (CQI) and resource request (SR) are sent to the target base station on the PhysicalUplink Control Channel (PUCCH), and the target base station sends the resource grant of the handover confirmat...

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Abstract

This invention discloses a switching method in mobile communication system, which is suitable for a synchronous system, including: A, calculating a timing advance of a target base station when the terminal receives the switching command information from a source base station; B, the terminal sends a channel quality indication and resource request to the target base station and the target base station returns a resource authorization to terminal; C, the terminal sends the switching confirmation information to the target base station, then the switching is finished. The method adopting this invention is capable of reducing the time from the source base station to the target base station in the switching process so as to enable the terminal to quickly finish the synchronization with the target base station and without reducing the success rates of the other random access process.

Description

technical field [0001] The present invention relates to a mobile communication system, in particular to a handover method in the mobile communication system. Background technique [0002] like figure 1 As shown, the distributed cellular wireless communication system is mainly composed of terminals, base stations and core networks. There can be logical or physical connections between base stations as needed. The network composed of base stations is called a radio access network (Radio Access Network, RAN), which is responsible for access layer affairs, such as the management of wireless resources; The mode of the base station is responsible for scheduling. Each base station can be connected to one or more core network nodes (CN), and the core network is responsible for non-access stratum affairs, such as mobility management. A terminal refers to a device that can communicate with the network, such as a mobile phone or a laptop. Each terminal can only connect to one of the...

Claims

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Application Information

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IPC IPC(8): H04Q7/38H04B7/26
Inventor 李姣
Owner 江苏久泰电缆有限公司
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