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Scheduling an uplink transmission over an unlicensed radio resource

A technology for radio resource and link transmission, applied in the field of scheduling uplink transmission on unlicensed radio resources, which can solve the problems of complex scheduling, difficulty in optimizing resource efficiency, delay, overhead and throughput, etc.

Active Publication Date: 2018-12-21
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These aspects complicate scheduling in that it is difficult to optimize resource efficiency, latency, overhead, and throughput.

Method used

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  • Scheduling an uplink transmission over an unlicensed radio resource
  • Scheduling an uplink transmission over an unlicensed radio resource
  • Scheduling an uplink transmission over an unlicensed radio resource

Examples

Experimental program
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Embodiment Construction

[0039] figure 1 A wireless communication system 10 is shown. In some embodiments, wireless communication system 10 operates at least partially on unlicensed radio resources (eg, on unlicensed spectrum 12 ). System 10 may be, for example, a Long Term Evolution Unlicensed (LTE-U) system utilizing anchors in licensed spectrum but also employing unlicensed spectrum (e.g. based on 3GPPP Rel. 10 / 11 / 12 and defined by the LTE-U Forum ) or a License Assisted Access (LAA) system (eg, defined by 3GPP Release 13). Alternatively, system 10 may be a MulteFire (ie, LTE Standalone) system that does not require an anchor in licensed spectrum.

[0040]Where operating at least in part on unlicensed radio resources such as the unlicensed spectrum 12, the transmissions are contention or contention-based, for example among many different types of systems. For example, in some embodiments, a Clear Channel Assessment (CCA) or Listen Before Talk (LBT) period must be performed before performing a tr...

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PUM

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Abstract

A scheduling node (14) in a wireless communication system is configured for scheduling an uplink transmission on an unlicensed radio resource. The scheduling node (14) is configured to detect whetheror not the scheduling node (14) has transmitted or scheduled to receive on the unlicensed radio resource in a subframe. The scheduling node (14) is also configured to transmit a joint grant with a grant delay that is based on whether or not the scheduling node (14) has transmitted or scheduled to receive on the unlicensed radio resource in a subframe according to the detecting. The grant delay isa delay between transmission of the joint grant and an earliest one of multiple subframes granted by the joint grant for uplink transmission on the unlicensed radio resource.

Description

Background technique [0001] A licensed radio resource is a resource (eg, in terms of frequency) granted to a licensee by a governmental agency, such as the FCC, for example. With exclusive rights, licensees can transmit on licensed radio resources without interference or resource congestion. This may allow licensees to maximize resource efficiency and signal quality. However, the number of licensed radio resources is limited, which in turn limits their ability to meet the increasing demand for greater throughput from applications and services. Furthermore, obtaining licensed radio resources is difficult and expensive. [0002] In contrast, unlicensed radio resources are resources for which no exclusive rights are granted to any licensee (for example, in terms of frequencies). Thus, such resources are available for simultaneous use by multiple operators or technologies without the difficulties and expense associated with licensing radio resources. However, because the resou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/12
CPCH04W72/23H04W72/20H04W16/14H04W72/0446H04W72/0453H04W74/0808
Inventor R.卡拉基郑荣富
Owner TELEFON AB LM ERICSSON (PUBL)