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Activation of carriers

A carrier and carrier communication technology, which is applied to the separation device of the transmission path, signaling distribution, digital transmission system, etc., can solve the problems of reducing performance and reducing deployment flexibility, and achieve the effect of reducing battery consumption

Inactive Publication Date: 2017-08-18
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0024] Tight time synchronization adds stringent requirements on the backhaul between transmitters and receivers on different carriers, which will reduce deployment flexibility, and listening to all carrier downlink control channels will consume additional power in the WD, and Potentially resulting in reduced performance (assuming the WD is not expected to send and receive useful data all the time)

Method used

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  • Activation of carriers
  • Activation of carriers
  • Activation of carriers

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Experimental program
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Embodiment Construction

[0065] This disclosure is aimed at supporting same-or-different Dual or multiple connectivity between different carriers associated with a radio access technology.

[0066]This disclosure describes providing fast activation in a WD receiving a downlink (DL) control channel on an additional carrier. The downlink control channel can include downlink scheduling assignments and uplink scheduling grants. One example of a downlink control channel is the Physical Downlink Control Channel (PDCCH) in LTE. The WD is initially (pre)configured with two or more carriers, where the carriers can be of the same or different radio access technology (RAT) (e.g., LTE, LTE-NX, GSM, UMTS, Wi-Fi, etc.) . LTE-NX indicates a further evolution of LTE to cover higher frequency bands than are possible for LTE today and may or may not be backward compatible with current LTE. The WD is arranged to monitor downlink control channels of a subset of the one or more carriers. The WD's monitoring of the do...

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Abstract

A mobile device may be configured to communicate across at least a first carrier and a second carrier. The mobile device can be configured to monitor a downlink control channel on the first carrier. The device can receive a first command from the network node to monitor a downlink control channel on the second carrier. Based on receiving the first command from the network node, the device can monitor the downlink control channel on the first carrier or the downlink control channel on the second carrier or both the downlink control channel on the first carrier and the downlink control channel on the second carrier.

Description

technical field [0001] This disclosure pertains to the activation of a carrier, and more particularly to the fast activation of an additional downlink control channel for a wireless device. Background technique [0002] Long Term Evolution (LTE) uses Orthogonal Frequency Division Multiplexing (OFDM) in the downlink (DL) and discrete Fourier transform extended OFDM in the uplink (UL). The underlying LTE downlink physical resources can thus be viewed as a time-frequency grid, where each resource element corresponds to one OFDM subcarrier during one OFDM symbol interval. figure 1 is a schematic diagram showing a time-frequency grid of LTE downlink physical resource elements. [0003] In the time domain, LTE downlink transmissions are organized into radio frames of 10 ms, each radio frame consists of length T 子帧 = 1 ms of ten equally sized subframes. figure 2 is a schematic diagram of the LTE time domain structure. [0004] Furthermore, resource allocation in LTE is usually...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L5/00H04W72/54
CPCH04L5/0085H04L5/0087H04L5/0098H04L5/0007H04L5/0053H04W72/23H04W72/542H04L43/16H04W28/0278
Inventor M.斯塔丁J.吕纳G.吕纳J.维克贝里G.米尔德
Owner TELEFON AB LM ERICSSON (PUBL)