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Mobile telephone, apparatus, method and computer implementable instructions product

a technology of mobile telephones and products, applied in the field of communication systems, can solve the problems of different overall energy consumption of mobile telephones (both active and idle) served by base stations, and achieve the effect of minimising the failure of system message reception and optimizing power savings

Inactive Publication Date: 2016-03-17
NEC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention improves communication and components to save power and minimize failures in receiving system messages on mobile phones.

Problems solved by technology

Different inactivity timer values can be set and broadcast by the radio access network, which result in different overall energy consumption of the mobile telephones (both active and idle) served by the base stations of that RAN.

Method used

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  • Mobile telephone, apparatus, method and computer implementable instructions product
  • Mobile telephone, apparatus, method and computer implementable instructions product
  • Mobile telephone, apparatus, method and computer implementable instructions product

Examples

Experimental program
Comparison scheme
Effect test

first embodiment

DRX Cycle Synchronisation Using Current Time Information

[0110]FIG. 5 shows an example timing diagram illustrating a method performed by components of the communication system 1 when carrying out paging of a mobile telephone 3 configured with an extended DRX cycle.

[0111]In this embodiment, the mobile telephone 3 obtains current time information from the respective RAN(s) it is currently using. In this example, the current time information is broadcast as part of the System Information (SI) message, as generally shown in steps S501a and S501b performed by (the base stations 5 of) RAN-A and RAN-B, respectively. The current time information allows the mobile telephone 3 to synchronise the operation of its modules to the RAN it is using. In this example, the SI message broadcast by RAN-B (at S501b) also includes an indicator (e.g. an ‘Extended DRX feature support indicator’ flag, IE, or the like) informing the mobile telephone 3 that the RAN-B supports the extended DRX cycle feature. The...

second embodiment

DRX Cycle Synchronisation Using Time of Location Registration

[0122]FIG. 6 shows an example timing diagram illustrating a method performed by components of the communication system 1 when carrying out paging of a mobile telephone 3 configured with an extended DRX cycle. This embodiment generally follows the first embodiment, however, instead of the core network selecting an arbitrary start time for the mobile telephone's 3 extended DRX cycle, a request-response procedure is carried out between the core network 7 and the RAN to derive a UE specific start time for the extended DRX cycle.

[0123]Steps S601a and S601b generally correspond to the respective SI broadcast messages at S501a and S501b described above with reference to FIG. 5. However, the messages sent at S601a (by RAN-A) and at S601b (by RAN-B) do not carry the current time information for the given RAN. Alternatively, if the messages at steps S601a / S601b include the current time information, in this embodiment the mobile tele...

third embodiment

Extended DRX Cycle without RAN Support

[0131]FIG. 7 shows an example timing diagram illustrating another method performed by components of the communication system 1 when carrying out paging of a mobile telephone 3 configured with an extended DRX cycle. This embodiment generally follows the first embodiment, however, the core network 7 provides support for the extended DRX operation without involving the RAN(s).

[0132]In this example, the mobile telephone 3 initially registers its current location with a core network entity (e.g. the MME 9) by sending, at step S703, an appropriately formatted NAS message, as explained above with reference to step S503 of FIG. 5. The NAS message (which may comprise an Attach / RAU / TAU Request) includes the mobile telephone's 3 Na and Nd parameters (i.e. the number of active and dormant SFs in its extended DRX cycle) thereby informing the core network 7 about its capability for the extended DRX cycle functionality.

[0133]When an entity in the core network ...

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Abstract

A communication system (100) is disclosed which uses system frames of a first and a second type. In a system frame of the first type communication with a mobile telephone (3) is subject to a restriction and in a system frame of the second type communication with said mobile telephone (3) is not subject to said restriction. It is determined whether or not to communicate with said mobile telephone (3), in a current system frame, in dependence on whether the current system frame is a first type of system frame or a second type of system frame.

Description

TECHNICAL FIELD[0001]The present invention relates to a communication system and to components thereof for transmitting paging messages to mobile or fixed communication devices. The invention has particular, but not exclusive, relevance to paging user equipment employing discontinuous reception in Long Term Evolution (LTE) Advanced systems as currently defined in associated 3rd Generation Partnership Project (3GPP) standards documentation.BACKGROUND ART[0002]In communication systems operating according to the LTE Advanced standards, a radio access network (RAN) provides User Equipment (UE), such as mobile telephones, access to a core network (and hence to other user equipment or other network nodes) via one or more of its cells. A radio access network typically comprises a plurality of base stations (eNB), each of which operates one or more cells of that RAN. Communication between the mobile telephones and the radio access network is controlled using a Radio Resource Control (RRC) p...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): H04W52/02H04W68/02H04W74/00
CPCH04W52/0212H04W88/06H04W68/025H04W74/006H04W52/0216H04W52/0229H04W76/28Y02D30/70
Inventor HANEJI, HAYATOIANEV, ISKRENLAIR, YANNICK
Owner NEC CORP
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