Generating channel access patterns for networks that are not coordinated with one another

A channel access and mode technology, applied in the field of communication systems, can solve the problems of time asynchrony and the risk of the same frequency hopping mode, and achieve the effects of improving performance, high utilization, and reducing packet error rate

Pending Publication Date: 2021-04-30
FRAUNHOFER GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG EV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] If the networks are not coordinated with each other in the frequency domain, and possibly also in time, the methods described above (tabularization, precomputed frequency hopping patterns) can be applied in principle, however, both networks randomly use the same frequency hopping There are risks in changing the model

Method used

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  • Generating channel access patterns for networks that are not coordinated with one another
  • Generating channel access patterns for networks that are not coordinated with one another
  • Generating channel access patterns for networks that are not coordinated with one another

Examples

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Embodiment 1

[0264] In each step size n, the associated pseudorandom number R can be obtained from n Integer r from n , which can take r min and r max Values ​​between, that is, r min ≤r n ≤r max . After each slot is active in channel access mode 110, several r n time slots, therefore, they are not used for channel access. exist Figure 10 This process is exemplarily shown in .

[0265] In detail, according to one embodiment, Figure 10 The resource elements 112 of the channel access pattern 110 projected onto the time access are shown schematically, resulting in unused time slots.

[0266] in other words, Figure 10 An exemplary sequence of used and unused slots according to an embodiment is shown.

[0267] If a number r is derived from a number R such that the elements of r are in r min and r max (equally distributed) occur with the same frequency, giving the following activity rates:

[0268] A=2 / (2+r min + r max ).

[0269] An advantage of the approach presented in th...

Embodiment 2

[0272] In the implementation according to example 1, it may happen that longer regions locally have significantly higher or lower activity rates than desired. This effect is avoided in the following examples.

[0273] In this case, groups of consecutive time slots are assigned periodically, in which an active time slot of the channel access mode is respectively placed. exist Figure 11 , the case where the activity rate is 1 / 4 (25%) is exemplarily shown here.

[0274] in detail, Figure 11 The resource elements 112 of the channel access pattern 110 projected onto the time access with an activity rate A=1 / 4 according to an embodiment are schematically shown.

[0275] in other words, Figure 11 An exemplary sequence of used and unused slots is shown according to one embodiment.

[0276] From Figure 11 As can be seen in , slots can be grouped into clusters 114 (in Figure 11 has a length of 4 in the example). Exactly one slot of the channel access pattern 110 is placed i...

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Abstract

Embodiments relate to a controller for a participant of a communications system, wherein the communications system wirelessly communicates in a frequency band which is used by a plurality of communications systems for communication, wherein the controller is designed to determine a channel access pattern, wherein the channel access pattern specifies a frequency- and / or time-hop-based allocation of the frequency band which can be used for the communication of the communications system, wherein the controller is designed to determine the channel access pattern according to individual information of the communications system and according to a status of a number sequence generator for generating a number sequence or a number of a number sequence.

Description

technical field [0001] Embodiments of the present invention relate to a controller for a participant of a communication system, a base station of a communication system, a terminal point of a communication system, and a communication system, wherein the communication system communicates at a frequency for communication performed by a plurality of communication systems Wireless communication is performed in the communication frequency band. Some embodiments relate to the generation of channel access patterns for mutually uncoordinated networks. Background technique [0002] In wireless communication between participants of a communication system in a frequency band used for communication by a plurality of communication systems, it is necessary to avoid interference of disturbance signals of other communication systems (=communications between participants of other communication systems) . [0003] General method used to avoid interference [0004] Disturbance of participa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/04H04W72/08H04B1/7143H04B1/7156
CPCH04B1/7143H04B1/7156H04B1/715H04W74/006H04W72/044H04B2001/7154H04W72/541H04W76/11H04L1/1642H04L9/0662H04W72/0453H04W72/53
Inventor 弗兰克·奥伯诺斯特雷蒙·迈耶格尔德·克里安约瑟夫·伯恩哈德约翰内斯·韦克斯勒雅克布·克奈索斯特凡·艾瑞斯约尔格·罗伯特
Owner FRAUNHOFER GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG EV
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