US 9,320,082 B2Granted

Method and system for switching wireless devices in looped network

AssigneeZte Corporation

InventorsZhihang Deng, Jizhou Li, Xiong Tang, Diqiang Zhang

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Abstract

The disclosure discloses a method and system for switching wireless devices in a looped network. The wireless devices include a core wireless device and remote wireless devices, and the core wireless device and two or more remote wireless devices, connected through two ports of the core wireless device, constitute a looped network; the method including: when the core wireless device detects that a line error rate at each of the two ports is within a determined threshold range, the core wireless device sends a valid control character, otherwise, the core wireless device sends an invalid control character; wherein the valid control character sent at one of the two ports of the core wireless device is different from that sent at another of the two ports of the core wireless device; when the remote wireless device detects that a line error rate at a receiving end of a master port of the remote wireless device is within the determined threshold range, the remote wireless device forwards the valid control character received at a slave port to the master port, otherwise, the remote wireless device sends the invalid control character to the master port; and the remote wireless device sends the invalid control character to its slave port continuously. With the present disclosure, the stability of the networking mode through the RRUs is promoted.

Claims12

Dependent claims

A method for switching wireless devices in a looped network, wherein the wireless devices comprise a core wireless device and remote wireless devices, and the core wireless device has a first port and a second port, the remote wireless devices comprises at least a first remote wireless device and a second remote wireless device, the core wireless device is connected with the first remote wireless device and the second remote wireless device through the first port and the second port, respectively, the method comprising:

at the core wireless device, detecting whether a line error rate at each of the first port and the second port is within a determined threshold range;
when the detected line error rate is within the determined threshold range, sending a first valid control character to a slave port of the first remote wireless device through the first port of the core wireless device, and sending a second valid control character to a slave port of the second remote wireless device through the second port of the core wireless device, when the detected line error rate is not within the determined threshold range, sending an invalid control character to each of the slave port of the first and second remote wireless devices through respective ports of the core wireless device, wherein the first valid control character is different from the second valid control character;
at each remote wireless device, detecting whether a line error rate at a receiving end of a master port of the remote wireless device is within the determined threshold range;
when the detected line error rate is within the determined threshold range, forwarding the first or second valid control character received at the slave port to the master port, when the detected line error rate is not within the determined threshold range, sending the invalid control character to the master port;
wherein each remote wireless device sends the invalid control character to its slave port continuously;
in an unlinked state, when the first valid control character is received at a first port of the remote wireless device and the second valid control character, which has a priority lower than that of the first valid control character, is received at a second port of the remote wireless device, setting, by the remote wireless device, the first port of the remote wireless device as the slave port, and the second port of the remote wireless device as the master port.

3 more elements

A system for switching wireless devices in a looped network, wherein the wireless devices comprise a core wireless device and remote wireless devices, and the core wireless device has a first port and a second port, the remote wireless devices comprises at least a first remote wireless device and a second remote wireless device, the core wireless device is connected with the first remote wireless device and the second remote wireless device through the first port and the second port, respectively, wherein,

the core wireless device is configured to, when detecting that a line error rate at each of the first port and the second port is within a determined threshold range, send a first valid control character to a slave port of the first remote wireless device through the first port of the core wireless device, and send a second valid control character to a slave port of the second remote wireless device through the second port of the core wireless device, and when detecting that the line error rate at each of the first port and the second port is not within the determined threshold range, send an invalid control character to each of the slave port of the first and second remote wireless devices through respective ports of the core wireless device, wherein the first valid control character is different from the second valid control character;
and
the remote wireless device is configured to, when detecting that a line error rate at a receiving end of a master port of the remote wireless device is within the determined threshold range, forward the first or second valid control character received at the slave port to the master port, and when detecting that the line error rate at a receiving end of a master port of the remote wireless device is not within the determined threshold range, send the invalid control character to the master port;
each of the remote wireless devices is further configured to continuously send the invalid control character to its slave port,
wherein in an unlinked state, the remote wireless device is further configured to, when detecting the first valid control character is received at a first port the remote wireless device and the second valid control character, which has a priority lower than that of the first valid control character, is received at another port of the remote wireless device, set the first port of the remote wireless device as the slave port, and the second port of the remote wireless device as the master port.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/241,006Filed 17 Jan 2012
Priority: CN 2011 1 02589022 Sep 2011
Published: US 2014/0221045 A17 Aug 2014
Granted: 19 Apr 2016
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

H04L 1/203
Using signal quality detector: details of error rate determination, e.g. BER, FER or WER
H04L 1/22
Arrangements for detecting or preventing errors in the information received: using redundant apparatus to increase reliability
H04L 41/00
Arrangements for maintenance, administration or management of data switching networks
H04W 88/08
Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices: access point devices