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Cellular communication system support for limited bandwidth communication devices

A technology of a cellular communication system and a communication device, which is applied to the support fields of both full bandwidth and limited bandwidth devices, and can solve the problems of too strict restrictions, insufficient decoding performance, incompatibility of MTC devices, etc.

Active Publication Date: 2014-03-05
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But if all cellular networks support powerful and cost-effective MTC devices, asking them to limit themselves to small bandwidths would become too restrictive
[0011] Currently, there are incompatibilities between MTC devices that only support low bandwidth and / or have insufficient decoding performance (for example, the requirement for longer delays between possible data on PDCCH and PDSCH), which prevents such devices from being able to connect The LTE system so far defined by the 3rd Generation Partnership Project (3GPP) standard

Method used

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  • Cellular communication system support for limited bandwidth communication devices
  • Cellular communication system support for limited bandwidth communication devices
  • Cellular communication system support for limited bandwidth communication devices

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Embodiment Construction

[0057] The various features of the invention will now be described with reference to the drawings, wherein like parts are identified by like numerals.

[0058] Various aspects of the invention will now be described in more detail with reference to a number of exemplary embodiments. To facilitate an understanding of the invention, many aspects of the invention are described in terms of sequences of actions performed by elements of a computer system or other hardware capable of executing programmed instructions. In each embodiment it will be appreciated that the various acts can be performed by special purpose circuitry (e.g., analog and / or discrete logic gates interconnected to perform a dedicated function), by one or more processors programmed with a suitable instruction set implementer, or a combination of both. The term "circuitry" configured to perform one or more described actions is used herein to refer to any such embodiment (ie, one or more dedicated circuits and / or on...

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Abstract

A network node that serves a host cell in a cellular communication system transmits, at (a) first time interval(s), first control channel information on a control channel that extends over a first bandwidth of a radiofrequency spectrum. The first control channel communicates information necessary to enable a first type of communication device to receive data from the host cell. The first type of communication device can receive first bandwidth-wide signals. At (a) second time interval(s), second control channel information is transmitted on a second control channel of a first M-cell. The second control channel occupies a second bandwidth that is smaller than the first bandwidth. The second time interval(s) do(es) not coincide with any of the first time interval(s).; A second type of communication device having reduced receive bandwidth capabilities compared to those of the first type of communication device is thereby made capable of being served by the node.

Description

Background technique [0001] The present invention relates to cellular communication systems, and more particularly, to support for both full bandwidth and limited bandwidth devices in cellular communication systems. [0002] A cellular communication system typically includes a land-based network that provides wireless coverage to mobile terminals that can continue to receive service as they move around within the coverage area of ​​the network. The term "cellular" derives from the fact that the entire coverage area is divided into so-called "cells", each of which is typically served by a specific radio transceiver station (or equivalent) associated with a land-based network. Such transceiver stations are often referred to as "base stations". When a mobile device moves from one cell to another, the network hands over responsibility for serving the mobile device from the current serving cell to the "new" cell. In this way, the user of the mobile device experiences continuity o...

Claims

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Application Information

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IPC IPC(8): H04W48/12H04W48/16
CPCH04W48/16H04L5/00H04W48/12H04L5/0053H04W72/53
Inventor B.林多夫A.瓦尔伦L.维赫姆斯森E.埃里克斯森J.阿西蒙
Owner TELEFON AB LM ERICSSON (PUBL)