Wireless telecommunications systems

A wireless telecommunications and distributed communication technology, applied in wireless communication, electrical components, network planning, etc., can solve problems such as asynchronous random access of mobile terminals, optimized performance, and communication harassment

Inactive Publication Date: 2009-09-16
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, when a mobile terminal approaches a cell boundary, high transmit power can cause the mobile terminal to disturb communications in neighboring cells
Additionally, or alternatively, communications from mobile terminals may be disturbed by communications in neighboring cells
[0005] Moreover, handover from one base station to another will cause the mobile terminal to perform asynchronous random access in the target cell
This random access increases handover interruption time
[0006] In addition, it is difficult to plan the frequency of mobile terminals at the cell border: either use a static allocation (for example, 1 / 3) reuse scheme, or use a fractional load (fractional load) scheme
However, none of these schemes can provide optimized performance

Method used

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Examples

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Embodiment Construction

[0035] figure 1 is a schematic diagram of a wireless telecommunications system 1 operating in accordance with an aspect of the present invention. figure 1 The system 1 includes a core network (CN) resource 2 , a first base station 6 , and a second base station 8 . The first base station 6 defines a first communication cell within which communication with mobile terminals is handled by the first base station 6 . Likewise, the second base station 8 defines a second communication cell within which communication with the mobile terminal is handled by the second base station 8 . exist figure 1 An exemplary mobile terminal (or user equipment UE) 4 is illustrated in . As is well known and understood, using signaling link S1 1 and S1 2 , each base station can communicate with core network resources 2 for call routing and other tasks. Also, the first base station 6 and the second base station 8 are able to communicate with each other using the communication route (or interface) X...

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Abstract

A wireless telecommunications system is provided in which mobile terminals requiring high transmission power are identified as being potentially disturbing to neighbouring cells. Information relating to the identified mobile terminals is sent to the neighbouring basestation, so that resource allocation decision can be made using such information.

Description

technical field [0001] The present invention relates to wireless telecommunication systems, and more particularly to resource allocation in wireless telecommunication systems. Background technique [0002] Wireless telecommunication systems generally use a cellular structure in which a plurality of base stations define respective communication cells, and mobile terminals within these cells communicate with corresponding base stations. The base station allocates to each mobile terminal within its cell communication resources (typically time-frequency blocks) for enabling communication between the mobile terminal and the base station. [0003] As the mobile terminal moves within a cell, the radio conditions experienced by the mobile terminal change. In some locations, such as the edge area of ​​a cell, higher transmission power is required in order to successfully transmit data between the mobile terminal and the base station. [0004] However, when a mobile terminal approac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W16/10H04W24/10H04W36/08H04W88/08H04W36/30
CPCH04W36/20
Inventor 雅各布·厄斯特林马茨·莫兰德
Owner TELEFON AB LM ERICSSON (PUBL)
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