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Uplink Synchronization method for one-way service in mobile communication system

A mobile communication system, one-way service technology, applied in branch offices providing special service devices, transmission systems, data exchange through path configuration, etc.

Inactive Publication Date: 2008-10-29
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the terminal can move at high speed, if the TA is not updated in time, the change of the transmission delay caused by the moving distance of the terminal may exceed the Tab mentioned above.

Method used

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  • Uplink Synchronization method for one-way service in mobile communication system
  • Uplink Synchronization method for one-way service in mobile communication system
  • Uplink Synchronization method for one-way service in mobile communication system

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Embodiment Construction

[0033] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0034] Figure 7 It is a flow chart of an uplink synchronization method for a one-way service in a mobile communication system according to the present invention. Such as Figure 7 As shown, the method includes the following steps:

[0035] Step S702, in the case of only downlink unidirectional service, the terminal periodically sends an uplink signal to the base station; and

[0036] In step S704, the base station evaluates the timing advance according to the received uplink signal, and then performs a periodic timing advance updating process.

[0037] When the discontinuous transmission technology is used for the downlink unidirectional service, the method may in...

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Abstract

The invention provides an uplink synchronization method of a one-way traffic in a mobile communication system, which can include the following steps: a terminal periodically sends uplink signals to a base station when only a downlink one-way traffic exists; and the base station estimates time advance on the basis of the received uplink signals, and then carries out the renewal process of the periodic time advance. Therefore, by adopting the method of the invention, network access can be more quickly realized in the process of receiving the one-way traffic so as to improve the customer satisfaction to the services, thus maintaining the synchronization of the uplink.

Description

technical field [0001] The present invention relates to a distributed cellular wireless communication system, and more specifically relates to an uplink synchronization method for one-way services in a mobile communication system. Background technique [0002] refer to figure 1 , the distributed cellular wireless communication system mainly includes terminals, base stations and core networks. There can be logical or physical connections between base stations according to needs. The network composed of base stations is called the radio access network (RAN), which is responsible for access layer affairs, such as the management of wireless resources, and the uplink and downlink wireless resources according to the shared channel. way of scheduling. Each base station can be connected to one or more core network nodes (CN). The core network is responsible for non-access stratum affairs, such as mobility management. A terminal refers to a device that can communicate with a netw...

Claims

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Application Information

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IPC IPC(8): H04B7/26H04B1/707H04Q7/38H04L12/28H04L12/18
Inventor 杜忠达柯雅珠
Owner ZTE CORP
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