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Data tramsitting method, system and network unit

A data transmission method and network unit technology are applied in the field of base station controllers to achieve the effects of improving network capacity, low voice quality, and high spectrum usage efficiency

Inactive Publication Date: 2004-10-27
NOKIA NETWORKS OY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Another problem arises from the fact that cellular networks often contain multiple disjoint clusters of cells

Method used

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  • Data tramsitting method, system and network unit
  • Data tramsitting method, system and network unit
  • Data tramsitting method, system and network unit

Examples

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Embodiment Construction

[0016] refer to figure 1 , we examine an example of a data transmission system to which the preferred embodiment of the invention may be applied. The present invention can be used in various wireless communication systems using frequency hopping. An example of such a communication system is the GERAN or GSM / EDGE radio access network. It is a wireless access network that includes GPRS and EDGE technology and can be connected to the UMTS core network, allowing IP-based real-time services such as IP telephony (IPT), IP-based streaming and IP multimedia services.

[0017] As used herein, frequency hopping is a technique of periodically changing the temporary carrier frequency of a signal in a predetermined manner to another location within a selected frequency spectrum that is wider than the minimum required frequency spectrum for transmission.

[0018] It is obvious to those skilled in the art that the method of the present invention can be applied to systems using different mo...

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Abstract

A data transmission method in a telecommunication system utilizing frequency hopping and the system having a limit for allowable interference. The method includes performing at least two frequency hopping layers, each layer comprising one or more frequency hopping areas, the frequency hopping layers having frequency hopping parameters divergent from each other, setting the frequency hopping layers one on the other in such a way that the overlapping of the border zones of the frequency hopping areas is minimized, estimating interference in the system or in a predetermined part of the system, and if the interference is too high, transferring one or more users to another frequency hopping layer.

Description

technical field [0001] The invention relates to a data transmission method and a network element, such as a base station controller in a telecommunication system using frequency hopping. Background technique [0002] Frequency hopping involves changing the frequency used by a channel at regular intervals. Frequency hopping is used to reduce the effects of attenuation such as Rayleigh fading. One improvement that has been achieved is interference diversity: in high traffic areas the capacity of cellular systems is limited by their own interference from frequency reuse. The carrier-to-interference ratio of different calls may vary greatly. The carrier level varies with how far the mobile station is from the base station and the number of obstacles in between. The level of interference varies depending on whether the carrier frequency is being used by another call in an adjacent cell, and it also varies with the distance and level of the source of interference. Using freque...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/713
CPCH04B2001/7154H04B1/715H04W16/12
Inventor 玛蒂·塞尔曼凯塔
Owner NOKIA NETWORKS OY
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