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Distributed Base Station System and Method for Networking thereof and Base Band Unit

a technology of base station and network, applied in the field of base station technology, can solve the problems of high backup cost and complicated backup action, complicated network and management of system, high power consumption and cost, etc., and achieve the effect of enhancing the operational reliability of the base station system, reducing the operational cost, and small floor spa

Inactive Publication Date: 2011-06-30
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This solution reduces space occupancy, operational costs, and enhances reliability by allowing flexible capacity expansion and easier installation, while improving operational reliability and reducing backup costs.

Problems solved by technology

(1) In the macro base station, the transmission unit, the main processing & timing unit and the uplink / downlink base band signal processing unit forming the base band part are respectively placed on different functional single boards, which are connected with one another by a backboard. Different single boards or modules may be added according to different capacity expansion requirements; the duplexer, the power amplifier unit, the IF signal processing unit that form the RF part are also placed on different functional single boards, which are connected with each other by a backboard or external wirings. All the above units are configured in one indoor or outdoor cabinet. An outdoor cabinet additionally includes such functional units as temperature control equipment, power supply, environment monitoring equipment and transmission equipment. With all the components in large sizes, the cabinet is very large and heavy, resulting in high cost of transportation and installation and a hard installation site selection, thereby the network construction speed is badly affected. This kind of structure takes up a large space and leads to a high power consumption and cost. When backup is required, it needs to add some single boards or modules to achieve backup, thereby resulting in high backup cost and complicating backup action.
(2) In the mini base station, all the units in FIG. 1 are placed in a compact structural member module, thereby a mini base station having a small size and an easy installation. A mini base station generally supports configuration of 1-3 sectors. In the situation that one single cabinet supports one sector, a plurality of mini base stations are necessary for networking when more sectors should be supported or large capacity configuration is needed, thereby complicating networking and management of the system.
Therefore, mini base station are not fit for the expected applications of large capacity, furthermore, are not in favor of expanding capacity of the base part or the RF part respectively due to the base band and the RF part adopting integration design.

Method used

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  • Distributed Base Station System and Method for Networking thereof and Base Band Unit
  • Distributed Base Station System and Method for Networking thereof and Base Band Unit
  • Distributed Base Station System and Method for Networking thereof and Base Band Unit

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first embodiment

[0119]FIG. 8(a) is a schematic diagram illustrating the network structure with one BBU and three RRUs. As shown in FIG. 8(a), one BBU and three RRUs are connected respectively via a base band RF interface. Each of the RRUs belongs to a sector, and each of the RRUs adopts a networking configuration with single carrier wave. That is, the networking mode illustrated in FIG. 8(a) supports networking of 3×1 configuration, in which 3 refers to 3 sectors, and 1 means single carrier wave.

second embodiment

[0120]FIG. 8(b) is a schematic diagram illustrating network structure with two BBUs and three RRUs in the present invention. As shown in FIG. 8(b), the BBU1 and the RRU2 are connected via an Eia capacity expansion interface to form network with master-standby relationship. The BBU1 and the BBU2 are connected with three RRUs respectively via three base band RF interfaces respectively, each of the RRUs belongs to a sector, and each of the RRUs adopts a networking configuration with single carrier wave backup. That is, the networking mode illustrated in FIG. 8(b) supports networking of 3×1 configuration, in which 3 refers to 3 sectors, and 1 means single carrier wave. Suppose that the slot position label of the BBU1 is preset as a master BBU identifier, and the slot position label of the BBU2 is preset as a standby BBU identifier, then, the operation principles of the networking in FIG. 8(b) are described as follows. After accomplishing the networking as illustrated in FIG. 8(b), in no...

third embodiment

[0122]FIG. 8(c) is a schematic diagram illustrating network structure with two BBUs and three RRUs. As shown in FIG. 8(b), the BBU1 and the RRU2 are connected via an Eib capacity expansion interface and form a network with master-slave relationship. The BBU1 are connected with three RRUs respectively via three base band RF interfaces. Each of the RRUs belongs to a sector, and each of the RRUs adopts a network configuration with two-carrier wave. That is, the networking mode illustrated in FIG. 8(c) supports networking of 3×2 configuration, in which, 3 refers to 3 sectors, and 2 means 2 carrier waves. Since the BBU1 and the BBU2 have a master-slave relationship, the BBU uplink / downlink data capacity is increased to twice of that when a single BBU is used.

[0123]The operation principles of networking illustrated in FIG. 8(c) are completely the same as those in FIG. 8(b). The difference between them is in that in FIG. 8(c), failure of the BBU1 is only reported to the RNC with no backup ...

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PUM

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Abstract

The present invention discloses a distributed base station system as well as its networking method and base band unit. In this system, the base band unit (BBU) and RF unit (RFU) of the base station are separated, and the RFU is equipped with base band RF interfaces for interconnecting the BBU and transmitting data information, thereby forming the base station. Based on the separation of the BBU from the RFU, the BBU capacity is further divided at the same time, and every unit is also arranged independently. The BBU networking and capacity expansion may be achieved with capacity expansion interfaces and base band RF interfaces provided by BBU interface units in flexible and convenient ways.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]This application is a continuation of U.S. patent application Ser. No. 10 / 589,323, filed on Feb. 9, 2007. The U.S. patent application is a national stage entry of international patent application No. PCT / CN06 / 00044, filed on Jan. 12, 2006. The PCT application claims benefit of priority from Chinese patent applications CN200510070835.5, filed on May 19, 2005 and CN200510001936.7, filed on Jan. 12, 2005. The aforementioned patent applications are hereby incorporated by reference in their entireties.FIELD OF THE TECHNOLOGY[0002]The present invention relates to the base station technology, and more specifically to a distributed base station system and a method for networking thereof and base band units forming the distributed base station.BACKGROUND OF THE INVENTION[0003]In mobile communication systems, base stations are important components used for connecting user terminals to base station controllers (BSCs), receiving and transmitting radi...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): H04L27/00H04W88/08H04W88/14
CPCH04W88/08
Inventor WU, WANGJUNYU, CHENGDONGTAN, ZHUPU, TAOHE, WENSHENGLAN, PENGZHOU, JUNYU, MING
Owner HUAWEI TECH CO LTD
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