Communication system

a communication system and communication technology, applied in the field of communication systems, can solve the problems that the absence of a macro cell can also add to the complexity of addressing the problem, and achieve the effect of solving the problem of unable to meet the needs of the user, and solving the problem of unable to meet the needs of the user

Inactive Publication Date: 2016-01-07
NEC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0061]Although for efficiency of understanding for those of skill in the art, the invention will be described in detail in the context of a 3G system (UMTS, LTE), the principles of the invention can be applied to other systems (such as WiMAX) in which (home) base stations communicate via a signalling gateway with the corresponding elements of the system changed as required.

Problems solved by technology

The increasing geographic density of small cells presents challenges in achieving successful and efficient handover procedures in HetNets.
In the case of the scenario in which macro cell coverage is not present, whilst the absence of a macro cell may reduce interference from the macro on the same carrier as one or more of the small cells, the absence of a macro cell can also add to the complexity of addressing the issues highlighted above.

Method used

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Embodiment Construction

Overview

[0078]FIGS. 1 and 2 each schematically illustrates a mobile (cellular) telecommunication system 1 including a mobile communication device 3 comprising a mobile telephone (or other compatible user equipment) and a plurality of small cell base stations 5-1 to 5-3 (which may be any suitable small cell base station for example, Home evolved NodeBs (HeNBs), pico or femto base stations or the like) but which may be any suitable small cell base station) each of which operates an associated small cell 10-1 to 10-3 arranged in a cluster.

[0079]Each base station 5 is coupled to a core network 7 via a small cell gateway 14 and the core network 7 is also coupled to other networks (e.g. the Internet) via one or more gateways (not shown). The core network 7 includes a mobility management entity (MME) 12, a serving gateway (S-GW) 16 (and other communication entities such as a Packet Data Network (PDN) Gateway (PGW), which have also been omitted for sake of simplicity). The mobile communicat...

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Abstract

A gateway is described which facilitates a change of communication cell for a mobile device in a communication system, which includes a core network. The gateway receives messages from a base station operating a cell and forwards the messages received from the base station to the core network. The gateway intercepts a message relating to a change of communication cell, from a source cell in which the mobile communication device is located to a target cell, to determine if the core network needs to be notified of the change of cell. When it is determined that the core network needs to be notified, the gateway generates a message for providing information relating to the change of cell to the core network and transmits the message to the core network.

Description

TECHNICAL FIELD[0001]The present invention relates to a communication system and to components thereof for providing communication services to mobile or fixed communication devices. The invention has particular but not exclusive relevance to the implementation of so-called ‘small’ cells or Low Power Nodes (LPNs) in Long Term Evolution (LTE) communication systems currently being developed by the 3rd Generation Partnership Project (3GPP).BACKGROUND ART[0002]In 3GPP LTE networks, a base station (i.e. evolved NodeB, eNB) of a Radio Access Network (RAN) transmits data and signalling between a core network (CN) and User Equipment (UEs) located within the base station's coverage area.[0003]Recent developments in communication networks have seen increased deployment of so called ‘small’ cells operated by Low Power Nodes (LPNs), such as pico eNBs, femto cells, Home eNBs (HeNBs) or the like, which cells have a smaller coverage area than existing macro cells operated by a higher power macro ba...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): H04W36/04
CPCH04W36/04H04W92/045H04W84/045H04W36/08H04W88/12H04W36/0005H04W88/16
Inventor SHARMA, VIVEKWANG, MENGAWAD, YASSIN ADEN
Owner NEC CORP
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