Apparatus realizing distributed wireless cell and communication method
A wireless cell and distributed technology, which is applied in wireless communication, communication between multiple stations, and selection devices, etc., can solve the problem of reducing handover between large networks, mobile terminals unable to communicate normally, and signal strength reduction in edge areas and other issues to achieve the effect of extending the stay, meeting the needs of mobile communication, and improving the quality of calls
A wireless cell and distributed technology, which is applied in wireless communication, communication between multiple stations, and selection devices, etc., can solve the problem of reducing handover between large networks, mobile terminals unable to communicate normally, and signal strength reduction in edge areas and other issues to achieve the effect of extending the stay, meeting the needs of mobile communication, and improving the quality of calls
CN101394658AActive Publication Date: 2009-03-25ZTE CORP
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[0033] The specific implementation manner of the present invention will be described below in conjunction with the accompanying drawings.
[0034] The baseband unit BBU in the present invention is just connected with a plurality of radio frequency remote units RRU through an optical fiber, and the mode of cascading is connected between a plurality of radio frequency remote unit RRU, because each radio frequency remote unit RRU has certain network Coverage, therefore, multiple cascaded radio frequency remote units RRU form a chain network coverage along the railway, and support the same cell at the same time.
[0035] For the erection of radio frequency remote unit RRU, the coverage antenna of each radio frequency remote unit RRU does not need to be erected too high, and the antenna height of about 5 meters is appropriate, so that the network coverage is only for mobile users on high-speed trains, In order to ensure that the network coverage area has strong signal strength and ...
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The invention discloses a device and a communication method thereof for achieving a distributed type radio cell. The method comprises the following steps: after being received by a radio frequency remote unit, an uplink signal sent by a mobile terminal is forwarded to a base band unit; after being received by the base band unit, the uplink signal is resolved and synthesized, and sent to a base station controller; the base station controller sends a downlink signal to the base band unit; after being received by the base band unit, the downlink signal is resolved, and then distributed to a plurality of radio frequency remote units; and the radio frequency remote units forward the downlink signal to the mobile terminal through an aerial interface. The invention expands the effective coverage scope of the cell through the distributed type collaboration of the radio frequency unit at the remote end, thereby prolonging the sojourn time of a high speed mobile terminal passing through the cell, improving the measuring and switching effects of the mobile terminal passing through an adjacent cell, improving the communication quality of a mobile user, and satisfying the mobile communication demands on the occasions like express railway lines in a pertinence manner and the like.
Description
technical field [0001] The present invention mainly relates to the field of mobile communication, in particular to a device and a communication method for realizing distributed wireless cells. Background technique [0002] In the field of new-generation communication equipment manufacturing, the remote radio system is gradually attracting attention. Its typical architecture is to divide the base transceiver station (BTS, Base Tranceiver Station) into a baseband unit (BBU, Baseband Unit) and a remote radio unit (RRU, Remote Radio Unit) two parts. [0003] After the RRU and BBU are installed separately, they are connected remotely through optical fibers to provide a basis for distributed network coverage. For example, in some specific occasions, multiple different RRUs are used to transmit the same carrier to form a distributed network coverage. [0004] For the high-speed railways in economically developed areas, although the existing network coverage is very complete, seam...
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Patent Timeline
25 Mar 2009
Publication
CN101394658A
- IPC
- H04Q7/38; H04B7/26
- CPC
- H04W16/30
- Inventors
- ιι; ηε»Ίε©