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Method, device and medium for search space configuration of mtc device

A search space, radio device technology, applied to receiver-specific devices, signaling allocation, transmission path sub-channel allocation, etc., can solve problems such as excessive delay

Active Publication Date: 2021-05-11
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this problem can be solved by prioritizing latency-critical transmissions over non-critical transmissions, there is still a risk of excessive delays in the blind decoding process for receiving the required DCI (e.g. DL SA or UL SG)

Method used

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  • Method, device and medium for search space configuration of mtc device
  • Method, device and medium for search space configuration of mtc device
  • Method, device and medium for search space configuration of mtc device

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Embodiment Construction

[0022] Hereinafter, concepts according to exemplary embodiments of the present invention will be explained in more detail with reference to the accompanying drawings. The illustrated embodiments relate to control of radio transmissions in a wireless communication network, in particular to providing control information to a radio device, such as a UE. A wireless communication network may be organized as a cellular network and include a number of access nodes serving corresponding coverage areas (which may also be referred to as "cells"). In the following examples it will be assumed that the wireless communication network is based on LTE radio technology. In this case, the access node may correspond to an eNB (eNB: "evolved Node B") of LTE radio technology. However, it will be appreciated that the concepts shown are also applicable to other radio technologies, such as 5G (5th Generation) radio access technologies.

[0023]In the shown concept it is assumed that radio transmiss...

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PUM

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Abstract

An access node of the wireless communication network determines a configuration of a first search space (210) from first time domain coordinates and first frequency domain coordinates of a time-frequency grid of radio resource elements. Furthermore, the access node determines the configuration of the second search space (220) based on the second time coordinate and the second frequency domain coordinate of the time-frequency grid. The second search space (220) differs from the first search space at least with respect to temporal coordinates. In radio resource elements of a first search space (210), an access node transmits downlink control information for a first class of radio devices subject to a first timing requirement. In the radio resource elements of the second search space (220), the access node transmits downlink control information for a second class of radio devices subject to a second timing requirement that is stricter than the first timing requirement.

Description

technical field [0001] The present invention relates to a method and corresponding apparatus for controlling radio transmissions in a wireless communication network. Background technique [0002] In a wireless communication network based, for example, on a radio technology specified by 3GPP (Third Generation Partnership Project), radio transmissions are controlled using various kinds of control information. In LTE (Long Term Evolution) radio technology, as specified for example in 3GPP TS 36.211V13.0.0 (2015-12), the PDCCH (Physical Downlink Control Channel) established between the wireless communication network and UE (User Equipment) ) or EPDCCH (Enhanced Physical Downlink Control Channel) to transmit downlink control information (DCI). For example, DCI may be utilized to provide uplink scheduling grants (UL SGs) and / or downlink scheduling assignments (DLSAs) to UEs. The UL SG indicates radio resources assigned to the UE for radio transmission in an uplink (UL) direction...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L5/00
CPCH04L1/0038H04L5/0053H04L5/0064H04W4/70H04W72/20H04L5/0023
Inventor S.A.阿施拉夫R.包德麦J.胡施克B.林多弗
Owner TELEFON AB LM ERICSSON (PUBL)