Switching method and system based on distributed base station system

A distributed base station and switching system technology, applied in the field of switching methods and systems, can solve problems affecting call quality, call interruption, multi-signaling bandwidth, etc., to ensure uninterrupted services, fast switching speed, and reduce signaling processing The effect of delay

Active Publication Date: 2012-04-04
ZTE CORP
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Problems solved by technology

[0004] However, as mentioned above, frequent handovers will occupy more signaling bandwidth, and because signaling transmission has a certain delay, it may affect the quality of the call, and even cause the call to be interrupted

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  • Switching method and system based on distributed base station system
  • Switching method and system based on distributed base station system
  • Switching method and system based on distributed base station system

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example

[0046] Such as figure 2 As shown, the distributed base station system includes a BBU and several RRUs, the BBU and the RRUs are connected, and the data transmission and reception of the antenna ports of all the RRUs are synchronized with the BBU. Several RRUs form a virtual cell, such as RRU0-RRU9, and this group of RRUs can transmit the same wireless signal to serve a mobile station. Wherein, the BBU specifically includes a signaling processing and control unit, a baseband processing unit, an RRU interface processing unit, and a radio resource exchange unit; and each RRU includes a transceiver unit and an antenna unit (not shown in the figure).

[0047] When the mobile station is located at position A, the RRUs serving the mobile station are RRU2, RRU3, and RRU4, where the numbers 2, 3 and 4 are the IDs of the RRUs, and the BBU generates the RRU ID list {2, 3, 4}. The mobile station periodically reports the measurement report, and the RRU forwards the measurement report to...

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Abstract

The invention discloses a shifting method and system based on a distributed base station system. The method is that a radio frequency unit retransmits a measurement report submitted by a mobile station to a baseband unit periodically and a radio frequency unit identification which is used to identify the radio frequency unit is carried in the measurement report; the baseband unit identifies the location of the baseband unit mobile station according to the radio frequency unit; the baseband unit selects one or more radio frequency units communicated with the mobile station according to the measurement report and the judged location of the mobile station, and updates a list of the radio frequency unit identification corresponding to the mobile station; the baseband unit switches the radio resource needed by the mobile station to one or more radio frequency units selected. Rapid switching is realized by the invention, the communication quality can not be affected in switching and uninterrupted service can be ensured.

Description

technical field [0001] The present invention relates to a distributed base station system in the field of wireless communication, in particular to a handover method and system based on a distributed base station system. Background technique [0002] In recent years, the architecture development of wireless communication systems has gradually evolved into a trend of distributed base station systems. The so-called distributed base station system is to separate the base band unit (Base Band Unit, referred to as BBU) and radio frequency unit (Remote Radio Unit, referred to as RRU) of the base station, and connect the BBU to multiple RRUs through optical fiber and other transmission means. The BBU centrally handles the baseband part of the distributed base station system, and the RRU handles the data transmission and reception of the antenna port. Distributed base stations have changed the architecture of integrating baseband and radio frequency in traditional base stations. The...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W36/32
Inventor 赵志勇
Owner ZTE CORP
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