Radio equipment (RE)-based synchronization

A technology of radio equipment and radio base stations, applied in wireless communication, electrical components, time-division multiplexing systems, etc., can solve problems such as reducing base station reliability, increasing base station cost, and increasing fatal failures

Inactive Publication Date: 2011-02-23
TELEFON AB LM ERICSSON (PUBL)
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this method reduces the reliability of the base station by increasing the probability of fatal failure (extra cable may be disconnected), and increases the cost of the base station

Method used

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  • Radio equipment (RE)-based synchronization
  • Radio equipment (RE)-based synchronization
  • Radio equipment (RE)-based synchronization

Examples

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Embodiment Construction

[0026] In the following description, for purposes of illustration and not limitation, specific details are set forth, such as particular nodes, functional entities, techniques, protocols, standards, etc., in order to provide an understanding of the described techniques. For example, certain example embodiments use a CPRI based system. But the technique is not limited to CPRI-based systems. In other instances, detailed descriptions of well-known methods, devices, techniques, etc. are omitted so as not to obscure the description with unnecessary detail. The individual functional blocks are shown in the figures. Those skilled in the art will recognize that individual hardware circuits, using software programs and data in conjunction with a suitably programmed microprocessor or general purpose computer, using application specific integrated circuits (ASICs), programmable logic arrays, and / or using one or more A digital signal processor (DSP) implements the functions of those blo...

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Abstract

A distributed radio base station includes a first radio equipment controller (REC) node (12), a second radio equipment controller (REC) node (14), and a radio equipment (RE) node (16) for transceiving information over a radio interface with one or more radio terminals. The first REC node and the second REC node are physically separate from the RE node. The first REC node and / or the second REC node are / is connected to the RE node by a transmission link. Synchronization reference information is provided to one of the REC and RE nodes. The synchronization reference information in the one node is compared with timing information received from another of the REC nodes to generate a timing difference. The timing difference is used to adjust a timing unit at the another node in order to achieve timing synchronization between the RE node, the first REC node, and the second REC node.

Description

technical field [0001] The technical field relates to radio communications, and the technology in this application relates to synchronous distributed radio base stations. Background technique [0002] A distributed radio base station (RBS) typically includes a radio equipment controller (REC) coupled to one or more local or remote radio equipment (REs). But there are situations where it would be desirable to include multiple RECs in a distributed radio base station. For example, it is technically feasible for an RE to support multiple wireless communication standards at the same time. Multiple low-cost RECs connected to one RE can be used to serve radio communication based on different radio wireless standards such as WCDMA and Long Term Evolution (LTE) of the Universal Mobile Telecommunications System (UMTS) wireless communication standard. Multiple RECs connected to one RE can also be used to increase the capacity and / or performance of a radio base station. [0003] In ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W88/08H04J3/06
CPCH04W88/085H04J3/0647H04J3/0638
Inventor J·厄斯特林
Owner TELEFON AB LM ERICSSON (PUBL)
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