Data caching method and device and SCEF entity

A data buffering and buffering technology, applied in the field of communication, can solve the problems of high S-GW capacity requirements and inability to ensure that downlink data is not discarded, and achieve the effect of reducing overhead

Active Publication Date: 2019-05-14
CHINA MOBILE COMM LTD RES INST +1
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  • Abstract
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  • Claims
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Problems solved by technology

[0006] Embodiments of the present invention provide a data caching method, device, and SCEF entity to solve the problem that the existing method for caching downlink data by using the S-GW has higher requirements on the capacity of the S-GW and cannot guarantee that the downlink data will not be discarded

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  • Data caching method and device and SCEF entity
  • Data caching method and device and SCEF entity
  • Data caching method and device and SCEF entity

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Embodiment Construction

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0038] see figure 1 As shown, the embodiment of the present invention provides a data caching method, which is applied to a SCEF (Service Capability Exposure Function) entity, including the following steps:

[0039] Step 101: Obtain the power saving state of the terminal and the waiting period for the terminal to change from the power saving state to the reachable state.

[0040] Wherein, the power saving state of the terminal may be a PSM state or an...

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Abstract

The invention provides a data caching method and device and SCEF entity. The invention discloses a device and an SCEF entity. The data caching method comprises the following steps of: obtaining a power saving state of a terminal and a waiting period of the terminal from the power saving state to a reachable state, and sending a first notification message to a service platform, the first notification message being used for notifying the power saving state and the waiting period, and notifying the service platform to cache downlink data. According to the scheme of the invention, downlink data can be cached by the service platform, so that S-can be realized; The GW does not serve as a downlink data cache point, and S-is reduced. And the GW caches the overhead of downlink data and ensures thatthe downlink data of the terminal is not discarded.

Description

technical field [0001] The present invention relates to the technical field of communication, in particular to a data caching method, device and SCEF entity. Background technique [0002] Currently, NB-IoT (Narrow Band Internet of Things, Narrow Band Internet of Things), as a solution to LPWA (Low Power Wide Coverage), can connect and manage objects and open up more commercial profits for operators model to create more business value. [0003] In order to achieve the purpose of reducing terminal power consumption, NB-IoT introduces two power saving schemes, eDRX (enhanced discontinuous reception, enhanced Discontinuous Reception) and PSM (power saving mode, Power Saving Mode). Wherein, when the terminal is in the eDRX state, the network side can only page the terminal in the PTW (Paging Time Window) of the eDRX cycle, and not page the terminal in non-PTW. When the terminal is in the PSM state, it can reduce power consumption and prolong battery life. The state is similar t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/08H04W76/20
CPCY02D30/70
Inventor 刘晨
Owner CHINA MOBILE COMM LTD RES INST
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