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Downlink and uplink data transmission method and apparatus

A technology of downlink data and transmission method, which is applied in the field of communication, and can solve problems such as inconsistency of optical fiber length, limitation of transmission location, failure of reasonable utilization of optical fiber transmission capacity, etc.

Active Publication Date: 2015-11-18
DATANG MOBILE COMM EQUIP CO LTD
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  • Abstract
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  • Claims
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Problems solved by technology

[0023] To sum up, in the existing two ways of performing remote buffering for the baseband data of the community, the length of the optical fiber is inconsistent, and the baseband data of the community is required to be divided into optical fibers for remote buffering; the system of the community is different, and the baseband data of the community is required to be separated Remote buffering in the cell, neither of the two methods can flexibly perform remote buffering according to the length of the fiber and the standard of the cell, and thus limit the transmission position of the baseband data of the cell in the fiber, and the transmission capacity of the fiber cannot be reasonably utilized

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  • Downlink and uplink data transmission method and apparatus
  • Downlink and uplink data transmission method and apparatus
  • Downlink and uplink data transmission method and apparatus

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Embodiment Construction

[0081] The specific implementation manners of a downlink and uplink data transmission method and device provided by the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0082] The downlink and uplink data transmission methods and devices provided by the embodiments of the present invention are compatible with TDS single-mode base stations, TDL single-mode base stations, and TDS and TDL dual-mode base stations, and are suitable for single-antenna, two-antenna and eight-antenna RRUs.

[0083] An embodiment of the present invention provides a downlink data transmission method, such as image 3 As shown, the method includes:

[0084] Step 302: When the remote radio unit RRU receives baseband data of multiple cells on the same optical fiber, store the baseband data of multiple cells in a pre-configured storage space;

[0085] Step 304: Regarding the baseband data of each cell in the baseband data of multiple cells, when th...

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Abstract

The invention discloses a downlink and uplink data transmission method and apparatus. According to the invention, base band data of communities can be remotely buffered in a flexible manner on the basis of the length of a fiber and the standard of the communities so as not to be restricted in transmission position in the fiber, and then the transmission capability of the fiber can be utilized reasonably. The downlink data transmission method includes the following steps: storing base band data of the communities to a pre-configured storage space when a radio frequency remote unit RRU receives the base band data of the communities through the same fiber; and for the base band data of one of the communities, reading by the RRU the base band data of the community from the storage space when a preset time is up, and sending the read base band data of the community to user equipment in the community, wherein a time difference between the preset time and the time when the base band data of the community is stored is equal to the remote compensation time of the community.

Description

Technical field [0001] The present invention relates to the field of communication technology, and in particular to a method and device for downlink and uplink data transmission. Background technique [0002] The base station equipment used by China Mobile's third-generation mobile communication technology (3rd-Generation, 3G) and the fourth-generation mobile communication technology (the4thGenerationmobilecommunicationtechnology, 4G) adopts a distributed structure, consisting of a baseband processing unit (BuildingBasebandUnit, BBU) and a radio remote unit (RadioRemoteUnit, RRU) structure. The BBU and the RRU are connected through one or two pairs of optical fibers, and the data transmission follows the IR interface (Interface between the RRU and the BBU) protocol. The baseband processing module of the RRU Field Programmable Gate Array (FieldProgrammable Gate Array, FPGA) is located between the IR interface module and the intermediate frequency processing module. The mapping re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/2575
Inventor 陈聃青王伟余浩
Owner DATANG MOBILE COMM EQUIP CO LTD
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