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Master-slave relation deterministic method for far-end radio frequency unit in wireless communication system

A remote radio frequency unit, wireless communication system technology, applied in wireless communication, communication between multiple stations, radio/inductive link selection and arrangement, etc., can solve problems such as inability to guarantee accuracy and time-consuming

Active Publication Date: 2009-11-18
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method is time-consuming and its accuracy cannot be guaranteed

Method used

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  • Master-slave relation deterministic method for far-end radio frequency unit in wireless communication system
  • Master-slave relation deterministic method for far-end radio frequency unit in wireless communication system
  • Master-slave relation deterministic method for far-end radio frequency unit in wireless communication system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] When chain networking is used, the method for determining the RRU master-slave relationship is as follows:

[0031] 1. After the BBU is powered on successfully, use the fiber-optic clock to extract the priority indicator signal, and send the signal to the RRU connected to the BBU. The priority indicator signal can be a clock symbol inserted on the line, and the clock symbol has Priority, and the clock mark is sent from the baseband radio frequency interface of the BBU;

[0032] 2. The RRU receives the priority indication signal, sets the link port receiving the priority indication signal as the slave flag, and sets the other link port as the master flag. The link port with the master flag set is the master port, and the link port with the slave flag set is the slave port. In order to ensure the reliability of setting the flag, it can be pre-set to set the link port connected to the BBU as the slave flag after the above-mentioned RRU receives a certain number of priorit...

Embodiment 2

[0036] When the ring networking mode is used, the method for determining the master-slave relationship of the RRU is as follows:

[0037] 1. After the BBU is powered on successfully, use the channel-associated clock of the optical fiber to extract the priority indication signal, and send the signal to the RRU connected to the BBU. The priority indication signal may be a clock mark inserted on the line, the clock mark has a priority, and the clock mark is sent from the baseband radio frequency interface of the BBU. Since both ports of the BBU are connected to the RRU, only one port of the BBU sends a priority indication signal in this step, and the other port does not send a priority indication signal or sends a priority indication signal with a lower priority level, and the RRU connected to it receives a priority indication signal. The master-slave relationship is not determined for priority indication signals with lower priority levels;

[0038] 2. If the device receiving th...

Embodiment 3

[0042] When the star networking mode is adopted, the method for determining the master-slave relationship of the RRU is as follows:

[0043] 1. After the BBU is successfully powered on, use the fiber-optic clock to extract the priority indication signal and send it to all RRUs connected to it at the same time. The priority indication signal can be a clock mark inserted on the line, and the clock mark has priority. And the clock flag is sent from the baseband radio frequency interface of the BBU;

[0044] 2. After the RRU receives the priority indication signal, it sets the link port receiving the priority indication signal as the slave flag, and sets the other link port as the master flag. The link port with the master flag set is the master port, and the link port with the slave flag set is the slave port. In order to ensure the reliability of setting the flag, it can be pre-set to set the link port connected to the BBU as the slave flag after the above-mentioned RRU receive...

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Abstract

A method for determining the master-slave relationship of a remote radio frequency unit in a wireless communication system, comprising the following steps: (1) a baseband pool unit sends a priority indication signal to a corresponding remote radio frequency unit according to the network topology; (2) the remote radio unit After receiving one or more priority indication signals, set the link port connected to the baseband pool unit as the slave port, and set the other link port as the master port; (3) After the setting is completed, determine the remote radio frequency unit Whether the physical link signal of the main port of the main port is lost, if not, go to the next step; (4) After the remote radio frequency unit sends a priority indication signal to the next device connected to its main port, jump to step (2). Using the method can automatically determine the master-slave relationship of the remote radio frequency unit in the network quickly and conveniently.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a method for determining a reliable master-slave relationship of a remote radio frequency unit. Background technique [0002] There is a trend in the development of wireless communication system architecture: separate the radio frequency unit from the baseband control unit, and connect the two through long-distance transmission means (optical fiber or cable), so that the radio frequency unit can be placed in various places where needed. The advantage of this architecture is that the whole system can be divided into two relatively independent parts for independent development. At the same time, multiple radio frequency units share a baseband control unit, which not only reduces the cost, but also improves the flexibility of networking and network coverage. It is also convenient for engineering installation. [0003] Here, the two divided parts are respectively referred to as...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04Q7/36H04B7/26H04Q7/30H04W88/08
Inventor 孙号令
Owner ZTE CORP
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