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Communication system

A technology of a communication system and a communication device, applied in the field of communication systems, can solve problems such as inapplicability to dual-connection scenarios

Active Publication Date: 2018-05-11
NEC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such a configuration is considered unsuitable for dual connectivity scenarios, where a primary base station (MeNB) provides control plane communication in a PCell and a secondary base station (SeNB) provides user plane communication in one or more SCells

Method used

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Embodiment Construction

[0031]

[0032] Figure 1a and Figure 1b A mobile (cellular) telecommunication network 100 is schematically shown in which a mobile device 3 (or other such user equipment) can communicate via an E-UTRAN base station 5 operating an associated primary cell (PCell) 9 on a primary component carrier (PCC) , and / or any of a plurality of low-power nodes (LPNs) 7-1, 7-2 of each secondary cell (SCell) 11-1, 11-2 operating on an associated secondary component carrier (SCC) to communicate with other such devices and / or other communicating entities. Communications via base stations 5 and / or LPNs 7 are typically routed via a core network (not shown) accessed using E-UTRAN Radio Access Technology (RAT). As will be understood by those skilled in the art, while one mobile device 3, one base station 5, and two LPNs 7 are shown in Figure 1 for illustration purposes, the system will typically include other base stations, LPNs, and mobile devices when implemented.

[0033] Low Power Nodes (...

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Abstract

A communication system is disclosed in which a communication device communicates with communication apparatus that operates a cell within which the communication device is located. The cell is operated as a licensed assisted access (LAA) cell and has an associated physical uplink control channel (PUCCH). The communication device has a controller that is adapted to: generate a control signal for transmitting to said communication apparatus; perform a clear channel assessment (CCA) on said PUCCH before the control signal is transmitted; and block transmission of the control signal on said PUCCHwhen said CCA indicates that said channel is not clear. The communication device is further adapted, when said controller has not blocked said transmission of the control signal, to transmit the control signal to said communication apparatus in said PUCCH.

Description

technical field [0001] The present invention relates to communication systems. In particular, but not exclusively, the present invention relates to standards according to the Third Generation Partnership Project (3GPP) or equivalents or derivatives thereof such as the Universal Terrestrial Radio Access Network (UTRAN) and the Long Term Evolution (LTE) UTRAN (E-UTRAN) ), etc., including LTE-Advanced) and wireless communication systems and their devices. In particular, but not exclusively, the invention relates to the implementation of the Physical Uplink Control Channel (PUCCH) in carrier aggregation scenarios. Background technique [0002] More recently LTE-Advanced, including LTE-A, has proven to be a very successful platform for meeting the growing demand for wireless broadband data capabilities. In parallel with this ever-increasing demand, LTE-related technologies have been further enhanced by new features such as carrier aggregation (CA), in which multiple component c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W74/08
CPCH04W16/14H04W74/0808H04L5/0053H04L5/001H04L5/0055H04L1/1896Y02D30/70H04W72/21H04W72/00H04W74/00H04W72/20H04W72/23H04L1/1812H04W74/004H04W74/085
Inventor 查狄·基尔阿拉维韦克·夏尔马亚辛·亚丁·阿瓦德罗伯特·阿诺特
Owner NEC CORP