Inactivity handling of devices with delay-tolerant traffic

A technology of delay tolerance and equipment, applied in network traffic/resource management, electrical components, wireless communication, etc.

Active Publication Date: 2018-02-16
TELEFON AB LM ERICSSON (PUBL)
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although this process takes a long time for the UE to re-establish the connection, if it only has delay-tolerant traffic, it h

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  • Inactivity handling of devices with delay-tolerant traffic
  • Inactivity handling of devices with delay-tolerant traffic
  • Inactivity handling of devices with delay-tolerant traffic

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Embodiment Construction

[0037] For purposes of simplicity and illustration, the invention will be described primarily with reference to exemplary embodiments of the invention. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without these specific details. In this specification, well-known methods and structures have not been described in detail so as not to unnecessarily obscure the invention.

[0038] The physical capacity of a mobile communication network depends on various resources; an important one is used for the Physical Uplink Control Channel (PUCCH). One main purpose of the PUCCH is to provide dedicated channel resources for user equipment (UE) to request permission from the network to use the uplink shared channel (UL-SCH) for dedicated data transmission. The UE may send a scheduling request (SR) as...

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Abstract

To relieve signaling congestion, UEs (30) having delay-tolerant data are moved more rapidly to the non UL synchronized state, freeing up PUCCH resources for users that have not indicated a delay-tolerance. In one embodiment, a resource conservative mode is defined for a UE (30) having delay-tolerant data (e.g., from a "background" app); otherwise, the UE (30) assumes a default mode. In one embodiment, the network sends the UE a pair of first and a second values (or indices to them) for a Time Alignment Timer, TAT (56, 66) in the UE (30). The first value - which is typically smaller than the second value - is used by the UE (30) in the resource conservative mode when the user data plane is internally concluded as being delay- tolerant or has already been confirmed to be delay-tolerant; thesecond value is used otherwise (i.e., in default mode). In the resource conservative mode, the shorter TAT value moves the UE from PUCCH more rapidly, and the UE (30) uses random access for infrequentscheduling requests. In the default mode, the UE (30) retains PUCCH and has low latency for scheduling requests. The network may preconfigure the pair of TAT values. The mechanism is furthermore capable of achieving a synchronized start of a TAT value, and also stopping any TAT (56, 66) that is running.

Description

[0001] related application [0002] This application claims priority to US Provisional Application Serial No. 62 / 163,677, filed May 19, 2015, which is hereby incorporated by reference in its entirety. technical field [0003] The present invention relates generally to the field of wireless communications in mobile communications networks, and in particular to the handling of uplink time alignment and data inactivity monitoring for devices connected using the Long Term Evolution (LTE) protocol. Background technique [0004] Wireless communication networks have developed complex protocols to establish and maintain reliable connections between mobile user equipment (UE) and the network. In general, communication between the UE and the network consists of two types: Signaling (also known as control plane communication), which is "overhead" communication used to control connectivity, transmission power and technical characteristics (e.g., modulation and coding) and, IP data (als...

Claims

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Application Information

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IPC IPC(8): H04W28/02H04W72/12
CPCH04W28/0205H04W28/0289H04W72/12H04W72/52H04W28/0236
Inventor 贡纳·伯奎斯特艾哈迈德·诺阿毛罗·马丁斯帕特里克·李贞雄张培镧约翰·卡尔森
Owner TELEFON AB LM ERICSSON (PUBL)
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