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Methods and devices for link adaptation under conditions of intermittent interference in wireless communication systems

A wireless communication system and wireless communication equipment technology, applied in the field of wireless communication systems, can solve problems such as low throughput and spectrum efficiency, frequent retransmission, and waste

Active Publication Date: 2019-07-19
JRD COMM (SHENZHEN) LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, this does not necessarily correspond to the optimum operating point of the system
Furthermore, lower MCS results in lower throughput and waste of spectral efficiency
On the other hand, setting MCS too high will cause demodulation errors and require frequent retransmissions

Method used

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  • Methods and devices for link adaptation under conditions of intermittent interference in wireless communication systems
  • Methods and devices for link adaptation under conditions of intermittent interference in wireless communication systems
  • Methods and devices for link adaptation under conditions of intermittent interference in wireless communication systems

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Embodiment Construction

[0034] Those skilled in the art will recognize and understand that the details of the described examples are merely illustrative of some embodiments and that the teachings herein apply to various alternatives.

[0035] now as figure 1 As shown, an example of a portion of an LTE cellular communication system operating in accordance with an embodiment of the present invention is shown and generally designated 100 and includes an evolved Node B (eNB) 101 supporting an LTE cell 102 . In other embodiments, eNB 101 may support multiple cells. Cell 102 may be considered a cell using licensed spectrum or a LAA cell using unlicensed spectrum. LAA downlink is set in a subframe. The eNB 101 and UE 103 are capable of running a listen before talk procedure. The eNB 101 comprises part of a radio access network, which in this example is E-UTRAN. UE 103 is located within the coverage area of ​​cell 102 . figure 1 Only one user equipment is shown in , but multiple user equipments may be l...

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Abstract

A method for assisting link adaptation of a downlink between an eNB (101) and a User Equipment (103) in an LTE system operating in unlicensed spectrum which is subject to intermittent interference, relies on the UE sending to the eNB additional information included in channel quality indicator (CQI) reports notifying the eNB of the duty cycle of the interferer. Based on the information contained in this modified CQI report the eNB can choose to use a higher order modulation coding scheme (MCS) which will provide a higher throughput but will necessitate frequent retransmissions or a lower orderMCS which will not require frequent retransmissions but will have the disadvantage of a lower throughput.

Description

technical field [0001] Embodiments of the present invention generally relate to a wireless communication system, and in particular relate to a device and a method for optimizing the performance of a communication link through an air interface in the presence of burst interference or intermittent interference. Background technique [0002] Wireless communication systems, such as the third-generation (3G) mobile phone standards and technologies, are well known. This 3G standard and technology is developed by the Third Generation Partnership Project (Third Generation Partnership Project, 3GPP). Third generation wireless communications have generally been developed to support macrocellular mobile telephone communications. Such macro cells utilize high-powered base stations (ie, NodeBs) to communicate with wireless communication devices over a relatively large geographic coverage area. Generally, a wireless communication device (also called user equipment (User Equipment, UE)) ...

Claims

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Application Information

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IPC IPC(8): H04W24/02
CPCH04L1/0001H04L1/0003H04L1/0009H04L1/0015H04L1/0026H04L1/0027H04L1/0071H04L1/1812H04L1/1825H04W24/10H04W72/54H04W72/541H04W72/542
Inventor 托马斯·威尼肯埃夫斯塔西奥斯·格德拉纳若斯柳光
Owner JRD COMM (SHENZHEN) LTD