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Scheduling in Licensing Assisted Access

A scheduling mode, neutron technology, applied to the separation device of the transmission path, network topology, electrical components, etc., to save power and battery life, and improve network efficiency.

Active Publication Date: 2021-10-01
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Thus, although the UE will not receive any downlink traffic, it keeps its receiver chain open for a given carrier

Method used

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  • Scheduling in Licensing Assisted Access
  • Scheduling in Licensing Assisted Access
  • Scheduling in Licensing Assisted Access

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0073] License Assisted Access (LAA) Using the conventional fixed format LTE frame structure for downlink and uplink transmissions may not operate efficiently. When using a fixed format, transmission delays (especially at high loads) may result if channel access is not obtained in a predetermined subframe.

[0074] It is an object of the present disclosure to avoid at least the above disadvantages and provide flexibility to LAA for any subframe including downlink or uplink transmission. Embodiments described herein include a network node that communicates information about subsequent downlink and uplink subframes to wireless devices it serves to enable scheduling flexibility and provide accurate updates of such information. Embodiments also include a wireless device operable to receive flexible uplink and downlink scheduling information and to receive or transmit subframes according to a flexible uplink / downlink pattern.

[0075] Thus, certain embodiments provide scheduling ...

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Abstract

According to some embodiments, a method in a network node comprises determining a first uplink / downlink scheduling pattern for a first plurality of consecutive subframes; communicating the first uplink / downlink scheduling pattern to a wireless device; Transmit at least one subframe to the wireless device according to a first uplink / downlink scheduling pattern; determine a second uplink / downlink scheduling pattern for a second plurality of consecutive subframes, wherein the first plurality of consecutive subframes The subframe shares at least one subframe with a second plurality of consecutive subframes; and communicating a second uplink / downlink scheduling pattern to the wireless device.

Description

technical field [0001] Certain embodiments relate generally to wireless communication networks, and more particularly to subframe scheduling for Grant Assisted Access (LAA). Background technique [0002] A 3rd Generation Partnership Project (3GPP) initiative called License-Assisted Access (LAA) enables Long Term Evolution (LTE) devices to operate in the unlicensed 5GHz radio spectrum. The unlicensed 5GHz spectrum is used as a supplement to the licensed spectrum. Hence, devices connect in licensed spectrum (primary cell or PCell) and use carrier aggregation to benefit from additional transmission capacity in unlicensed spectrum (secondary cell or SCell). To reduce the changes required to aggregate licensed and unlicensed spectrum, the LTE frame timing in the primary cell is simultaneously used in the secondary cell. [0003] However, regulatory requirements may not permit transmission in unlicensed spectrum without prior channel sensing. This is because the unlicensed spec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/12H04W74/08
CPCH04W74/08H04W72/23H04L5/0007H04W72/1263H04W72/12H04W72/1268H04W72/1273H04W84/042H04W84/12
Inventor D.拉斯森S.发拉哈蒂郑荣富H.科拉帕蒂
Owner TELEFON AB LM ERICSSON (PUBL)