ALD device scanning algorithm under unreliable communication environment

A technology of scanning algorithm and communication environment, applied in the field of ALD equipment scanning algorithm, can solve the problems of missed scanning and low scanning efficiency

Inactive Publication Date: 2015-01-28
UNIV OF ELECTRONICS SCI & TECH OF CHINA ZHONGSHAN INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In response to this problem, relevant manufacturers have proposed some scanning methods, but these methods have problems such as low scanning effici

Method used

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  • ALD device scanning algorithm under unreliable communication environment
  • ALD device scanning algorithm under unreliable communication environment
  • ALD device scanning algorithm under unreliable communication environment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] ALD equipment scanning idea based on AISG protocol:

[0061] The AISG protocol stipulates that RCS and ALD devices communicate in a master-slave manner, that is, RCS (master device) sends HDLC frames to ALD device (slave device), and the slave device responds.

[0062]When the ALD device is started, it is in the state of no address. At this time, the master device can only communicate with these ALD devices by broadcasting HDLC frames encapsulated with XID (eXchangeID) frames. The XID frame format is shown in Table 1.

[0063] Table 1 XID frame format

[0064] FI

GI

GL

P.I.

PL

PV

P.I.

PL

PV

……

[0065] Among them, FI is the format identifier, GI is the group identifier, GL indicates the length occupied by all subsequent parameters, PI is the parameter identifier, PL indicates the number of parameter bytes, PV indicates the specific value of the parameter, and the three fields of PI, PL, and PV constitute a parameter...

Embodiment 2

[0084] The UID of an ALD device generally includes information such as the manufacturer ID, product type, production batch, serial number, etc. The probability that the corresponding bits of the UID of different ALD devices are the same decreases from left to right. In order to reduce unnecessary conflicts during the scanning process, the scanning code is gradually extended from right to left, and the ALD devices in the network are scanned sequentially based on the suffix matching method, that is, during the scanning process of the ALD device, the matching code is gradually extended to the left and increased The number of mask digits is used to scan the XID frame and broadcast it. If a conflict occurs, it means that there are multiple ALD devices in the network that are consistent with the matching code string. A new search bit is added to the left of the original matching code, and the mask is moved to the left at the same time. The number of bits, and then construct the XID f...

Embodiment 3

[0099] In this embodiment, the number n of ALD devices is set to be 1 to 50, the probability p of an ALD device that cannot respond normally to a scan frame that meets the matching conditions is set to be 0.1 and 0.2 respectively, and the number of extension bits b of the scan code when a conflict occurs is respectively Take 1 and 2, and take 3 and 5 for the maximum number of retransmissions r of the scan frame.

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Abstract

The invention relates to an ALD device scanning algorithm under the unreliable communication environment. An identical scanning frame is sent repeatedly according to the algorithm so that the possibility of scanning missing can be reduced to an acceptable degree. The algorithm comprises the following step of causing a system to send the scanning frame; detecting a conflict response; determining the matching conditions of an electrically-controlled antenna device in a network and a scanning frame matching code according to the result of detecting the conflict response; and performing corresponding process according to the matching conditions. The algorithm has linear complexity, can effectively improve scanning recognition rate, basically can solve the problem of scanning missing, is good in applicability and can quickly accurately scan ALD devices such as a RCU and a TMA produced by different factories.

Description

technical field [0001] The invention relates to the field of electronically adjustable antenna equipment, in particular to an ALD equipment scanning algorithm in an unreliable communication environment. Background technique [0002] With the advent of the 3G / 4G era, how to realize remote monitoring and control of base station equipment to improve the timeliness of network optimization is a major challenge for mobile operators. The electric adjustable antenna control system (RET Control System, RCS) is mainly used for remote monitoring and control of electric adjustable antenna equipment (Antenna Line Device, ALD) such as electric adjustable antenna remote control unit RCU, tower mount amplifier TMA. [0003] The AISG (Antenna Interface Standard Group) protocol is an antenna interface standard and protocol specification proposed to achieve compatibility and interoperability between electronically adjustable antenna control systems and ALD equipment from different manufacturer...

Claims

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Application Information

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IPC IPC(8): H04W24/04
CPCH04W24/02H04W88/085
Inventor 李文生邓春健吕燚崔园刘现锋官祥飞叶立威刘伟
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA ZHONGSHAN INST
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