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ALOHA-based control method of time slots (TSs) of base station (BS)

A control method and time slot technology, applied in communication between multiple stations, network traffic/resource management, electrical components, etc., can solve problems such as unsatisfactory effects, and achieve the effect of small average delay and large throughput

Inactive Publication Date: 2014-04-16
NEOLINK COMM TECH HANGZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since there is no unified adjustment method at present, each manufacturer is implementing it according to its own set of theories, and the effect of its implementation is not ideal

Method used

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  • ALOHA-based control method of time slots (TSs) of base station (BS)
  • ALOHA-based control method of time slots (TSs) of base station (BS)
  • ALOHA-based control method of time slots (TSs) of base station (BS)

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Embodiment

[0059] A method for controlling base station time slot ALOHA, comprising the following steps:

[0060] S1: Estimate the number of terminals that need to send information, that is, estimate the number of users User in the next frame;

[0061] S2: Estimate the dynamic frame length T according to the number of users User in the next frame;

[0062] S3: Estimate the number of time slots waiting for retransmission WT according to the dynamic frame length T;

[0063] S4: Use the obtained T and WT as the setting standard for the next frame.

[0064] Wherein, in the step S1, the number of users in the next frame is equal to the sum of the number of conflicting users in the previous frame and the number of newly arrived users; the number of conflicting time slots in the frame is set to Ncoll, and the number of time slots successfully sent is Nsuc;

[0065] When multiple users (more than one) choose to transmit on the same time slot, a collision occurs. These users are called conflict...

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Abstract

The invention discloses an ALOHA-based control method of time slots (TSs) of a base station (BS). The control method comprises the following steps: S1. estimating the number of terminals to which information needs to be sent, namely the number of users for next frame; S2. estimating the length T of a dynamic frame according to the number of the users for next frame; S3. estimating the number WT of the TSs to be resent according to the length T of the dynamic frame; and S4. taking the obtained T and WT as setting standards of next frame. By adopting the control method, the frame length can be reasonably adjusted and the resource utilization ratio can be improved, wherein, the frame length can be dynamically adjusted according to the use condition of the previous frame so as to reduce the probability of collision and idleness of the TSs of the frame. Compared with a plurality of common ALOHA-related algorithms in the prior art, the control method has the characteristics of higher throughput and shorter average delay.

Description

technical field [0001] The present invention relates to the communication field of time division multiple access (TDMA) wireless communication system, in particular to a control method of a base station time slot ALOHA concerning terrestrial radio broadcasting channel contention. Background technique [0002] DMR is the abbreviation of Digital Mobile Radio, which is a protocol standard used by European digital walkie-talkies. ETSI TS 102 361X. [0003] The DMR protocol standard is mostly used in dedicated digital walkie-talkies. At the same time, the dPMR protocol standard is mostly used for public digital walkie-talkies. The radio frequency index of the digital walkie-talkie determined by the Ministry of Information Industry is applicable to three frequency bands of 137-167MHZ, 403-425MHz and 915-917MHz and adopts two channel spacings of 12.5kHz and 6.25kHz. The former is TDMA2 time slot and the latter is FDMA. [0004] The shortcomings of traditional analog walkie-talki...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W28/16H04B7/26
Inventor 戎骏戴辉发盛建峰吴峰
Owner NEOLINK COMM TECH HANGZHOU