CN101420260B - Radio electric device node, distributed radio communication base station and communication method therefor - Google Patents
Radio electric device node, distributed radio communication base station and communication method therefor Download PDFInfo
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- CN101420260B CN101420260B CN 200710163736 CN200710163736A CN101420260B CN 101420260 B CN101420260 B CN 101420260B CN 200710163736 CN200710163736 CN 200710163736 CN 200710163736 A CN200710163736 A CN 200710163736A CN 101420260 B CN101420260 B CN 101420260B
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Abstract
The present invention discloses radio installation nodes, distributed radio communication base stations comprising the radio installation nodes and a communication method thereof, wherein, the radio installation nodes realize data transmitting to the radio installation control nodes in the adjacent radio base station by using different optical wavelengths. The radio installation nodes are positioned in the area covered by the distributed radio communication base station, the radio installation nodes in the edge of the covered area communicate with the radio installation control nodes of two or more adjacent distributed radio communication base stations, and the radio installation nodes are controlled and managed by the radio installation control nodes of the two or more adjacent distributed radio communication base stations. According to the present invention, communication between the radio installation nodes in a radio communication base station and the radio installation control nodes of the adjacent radio communication base stations is realized.
Description
Technical field
The present invention relates to wireless communication field, relate in particular to wireless device node, distributed radio communication base station and communication means thereof.
Background technology
In order to improve the network coverage, to improve power system capacity and reduce costs, cellular carrier is just progressively adopted distributed base station architecture.Two tissues that are born in the 3G camp: general public radio frequency interface (Common Public Radio Interface, be called for short CPRI) and Open Base Station Architecture (Open Base Station Architecture Initiative, be called for short OBSAI), specialize in the standardization of distributed base station architecture, promote base station of new generation to distributed evolution.Distributed base station is realized separating of baseband portion and radio frequency part, and this can allow base station baseband process resource-sharing, improves the flexibility of disposing, and the cost that reduces base station system.
CPRI is that Ericsson phone Co., Ltd, Huawei Tech Co., Ltd, Nippon Electric Company, Ltd., Nortel Networks Ltd., Siemens Company initiate a new industry cooperative association setting up, and the core technology of the general public radio frequency interface of CPRI is used for realizing that the wireless device of radio base station controls communicating by letter between node and remote radio devices node.
Fig. 1 shows the basic characteristics of this patent application, it has described a kind of for control interface, device and the method for communicating by letter between (REC) node and wireless device (RE) node at the wireless device of radio base station, wherein, radio base station utilizes a plurality of antenna carrier to receive and send messages by radio interface.REC node and RE node are separated and are coupled by transmission link.
Concrete methods of realizing comprises the steps: to produce control information and user profile, so that from REC node and RE node is transferred to another by transmission link.User profile comprises a plurality of data flow, each data flow corresponding to data that antenna is associated for a radio carrier; Control information and user profile are formatted as a plurality of time division multiplexinges (TDM) frame, wherein each TDM frame comprises the control slot for control information, with a plurality of data slots that are used for user profile, and a plurality of data slot is corresponding to the data flow of one of antenna carrier; And by transmission link, frame is transferred to another node.
The distributing architecture of base station has moved on to radio circuit each antenna port from the base station, allow radio system needn't concentrate on a place.These long-distance radio frequency units (RE) can produce interconnect delay and stationary problem, and central base station is caused interference, technically still have many problems to wait to solve.CPRI serial/deserializer adopts high accuracy to postpone the calibration measurement circuit, and transmission wherein and receiving system phase-locked loop are all independent separately, therefore system need not to add in addition any element, need not to carry out complicated intervention, but Measurement accuracy time of delay, and guarantee that long-distance radio frequency unit and central base station keep synchronizeing.
For further transmission quantity and the coverage that improves mobile phone, thus the transmission cost of reduction unit data quantity, and an important direction is exactly that remote radio unit (RRU) adopts smart antenna and the multi-input/output antenna that possesses the wave beam forming ability.But these multiaerial systems have stricter requirement to accurate timing, and adopt traditional Logic Circuit Design to be difficult to accurate delay of calibrating between base station and these long-distance radio frequency units.In order to ensure can follow the tracks of little optical fiber delay change to 200ps, the integrated delay calibration measurement of CPRI serial/deserializer circuit, can Measurement accuracy the base station to the optical fiber delay time between long-distance radio frequency unit and each long-distance radio frequency unit.
Under distribution-type base station architecture, allowing a plurality of RE communicate by letter with the wireless terminal realization in the mode of diversity is the effective way that further promotes the air interface spectrum efficiency, when wireless terminal is positioned at the edge in the zone that distributed base station covers, in order to reach diversity preferably, need to belong to cooperating between the REC of different distributions formula base station, this just require in current serving BS RE not only the REC in the macrocell of its covering send control and management data and user data, also to send control and management data and user data to the REC in the macrocell that is adjacent.And the interfacing of the companies such as Ericsson phone Co., Ltd does not provide wireless device (RE) node and interface, device and the method for wireless device control (REC) enabling communication between nodes in adjacent radio base station with it in a radio base station.
Therefore, expectation provides wireless device (RE) node and the device and method of wireless device control (REC) enabling communication between nodes in adjacent radio base station with it in radio base station.
Summary of the invention
Technical problem to be solved by this invention is to realize wireless device (RE) node and the communication between wireless device control (REC) node in adjacent radio base station with it in radio base station, makes the present invention according to this technical problem.
According to an aspect of the present invention, a kind of wireless device (RE) node is provided, comprise physical layer, link layer, and with management and chain of command service access point, synchronous service accessing points and user's face service access point, wherein, management and the chain of command service access user face data of naming a person for a particular job is linked on the channel that is carried by different wave length.Then, the channel of different wave length carrying is realized the transfer of data between wireless device node and a plurality of wireless device control (REC) node, and the data of transmitting comprise control and management data and user data.
Wireless device (RE) node will be sent to respectively a plurality of wireless devices control (REC) nodes on different wave length control and management data and format of user data turn to a plurality of time division multiplexing frames, and control the described time division multiplexing frame of transmission between (REC) node by specific wavelength at wireless device (RE) node and a plurality of wireless device, wherein, each time division multiplexing frame comprises for the time slot of control and management data and the time slot that is used for user data.
According to a further aspect in the invention, a kind of distributed radio communication base station is provided, it comprises the wireless device node that wireless device is controlled node and had above-mentioned feature, wherein, the wireless device node is in the distributed radio communication base station overlay area, and is in wireless device node in the fringe region of described overlay area and the wireless device in two or more adjacent distributions formula radio communication base station and controls node and communicate.
Wherein, being in the resource of the wireless device node in the fringe region of overlay area and working method is subjected to wireless device in two or more adjacent distributions formula radio communication base stations to control the control and management of node.
according to another aspect of the invention, a kind of communication means of distributed radio communication base station is provided, wherein, distributed radio communication base station comprises the wireless device node that wireless device is controlled node and communicated with two or more wireless devices control nodes that belong to different distributions formula radio communication base station, the wireless device node is controlled node by the transmission link on different wave length and two or more wireless device that belongs to different distributions formula radio communication base station and is coupled, wherein, this communication means comprises following processing:: the wireless device node uses different wavelength and described two or more wireless device control node that belongs to different distributions formula radio communication base station to carry out transfer of data, the data of transmitting comprise control and management data and user data, the wireless device node turns to a plurality of time division multiplexing frames with control and management data and format of user data respectively on different wave length, and control transmission time division multiplexing frame between node by specific wavelength at wireless device node and a plurality of wireless device, wherein, each time division multiplexing frame comprises for the time slot of control and management data and the time slot that is used for user data.
Wherein, the control and management data comprise the resource use designation data of current wireless electricity device node.
In addition, the resource of wireless device node is used designation data be transferred to all and need to be carried out to the wireless device node wireless device control node of control and management.
Resource uses designation data to comprise at least a in following data: whole bandwidth of operation of wireless device node, different wireless devices are controlled node the frequency resource of wireless device node are taken.And different wireless devices is controlled node and the frequency resource of wireless device node is taken comprised at least a in following parameter: different wireless devices is controlled the shared bandwidth of node, different wireless devices is controlled node to the holding time of wireless device node specific bandwidth.
Single frequency network structure proposed by the invention and method have the characteristics that are easy to realize simple in structure, both can independent utility, also can be used in combination with mobile communication system, particularly and time division duplex (TDD) when the base station is used in combination, can overcome the not enough problem of transmitting power that the TDD base station exists when realizing that full cell multimedia broadcast covers.
Other features and advantages of the present invention will be set forth in the following description, and, partly become apparent from specification, perhaps understand by implementing the present invention.Purpose of the present invention and other advantages can realize and obtain by specifically noted structure in the specification of writing, claims and accompanying drawing.
Description of drawings
Accompanying drawing is used to provide a further understanding of the present invention, and consists of the part of specification, is used for together with embodiments of the present invention explaining the present invention, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the schematic diagram that illustrates according to the radio base station system of prior art;
Fig. 2 is the schematic diagram that illustrates according to radio base station system of the present invention;
Fig. 3 is the flow chart that illustrates according to the communication means of radio communication base station of the present invention; And
Fig. 4 is the schematic diagram that illustrates according to the Microcell combining structure of the embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the present invention, is not intended to limit the present invention.
According to wireless device node of the present invention, comprise physical layer, link layer, and with management and chain of command service access point, synchronous service accessing points and user's face service access point, wherein, management and the management of chain of command service access point and chain of command service access point SAP
CMUser face data is linked on the channel that is carried by different wave length, then, the channel of different wave length carrying is realized the transfer of data between wireless device node and a plurality of wireless device control (REC) node, and the data of transmitting comprise control and management data and user data
The wireless device node will be sent to respectively a plurality of wireless devices control nodes on different wave length control and management data and format of user data turn to a plurality of time division multiplexing frames, and control transmission time division multiplexing frame between node by specific wavelength at wireless device node and a plurality of wireless device, wherein, each time division multiplexing frame comprises for the time slot of control and management data and the time slot that is used for user data.
Fig. 2 is the schematic diagram that illustrates according to radio base station system of the present invention.
With reference to Fig. 2, radio base station system 1 according to the present invention comprises wireless device control (REC) node 102 and wireless device (RE) node 101, this RE node 101 can be controlled (REC) node with two or more wireless devices that belong to different distributions formula radio base station and communicate, and it has the characteristic of above-mentioned wireless device node.
Particularly, (REC) node 102 controlled by wireless device and wireless device (RE) node 101 comprises respectively physical layer (layer one), link layer (layer two), and with management and chain of command service access point SAP
CM, synchronous service accessing points SAP
S, user's face service access point SAP
IQ
Wherein, physical layer is used for realizing that wireless device is controlled between (REC) node 102 and wireless device (RE) node 101 and the signal between wireless device (RE) node 101 transmits; Link layer is used for realization multiplexing, the transmission of user data, management and control information and synchronizing information is controlled.Management and chain of command service access point SAP
CMBe used for user face data is linked into the channel that is carried by different wave length, have the function of optical routing; Synchronous service accessing points SAP
STo the access of the link on different wave length synchronically controlling information; And user's face service access point SAP
IQLink on different wave length is uploaded or the download user data.
By to the management and chain of command service access point SAP
CMSend communicating by letter between wireless device control (REC) node 102 that wavelength information realizes wireless device (RE) node 101 and adjacent distributions formula base station.The route that different wavelength is corresponding different, as shown in Figure 2, by making path 10 4, path 10 5, path 10 6 use different wavelength, realize communicating by letter between the REC of REC, the distributed radio base station N of system of REC, distributed radio base station system 2 of RE and distributed radio base station system 1 in distributed radio base station system 1.
The wireless device node 101 that is in the fringe region of distributed radio communication base station system 1 overlay area is controlled node with the wireless device in two or more adjacent distributions formula radio communication base stations and is communicated, and the resource of this wireless device node 101 and working method are subjected to wireless device in two or more adjacent distributions formula radio base stations to control the control and management of node.
Fig. 3 is the flow chart that illustrates according to the communication means of radio communication base station of the present invention.
With reference to Fig. 3, communication means between the RCE node 102 that the RE node 101 that distributed radio base station system 1 comprises and other distributed radio base station system comprise comprises the steps: S302, RE node 101 uses different wavelength and two or more REC nodes that belongs to different distributions formula radio base station to carry out transfer of data, and the data of transmitting comprise control and management data and user data; S304, RE node 101 turn to a plurality of time division multiplexing frames with control and management data and format of user data respectively on different wave length; And S306, transmit the time division multiplexing frame between RE node 101 and a plurality of REC node 102 by specific wavelength, wherein, each time division multiplexing frame comprises for the time slot of control and management data and the time slot that is used for user data.
Wherein, the control and management data comprise the resource use designation data of current RE node 101.
In addition, use designation data to be transferred to all the resource of RE node 101 and need to carry out to the wireless device node REC node of control and management.
Resource uses designation data to comprise at least a in following data: whole bandwidth of operation of RE, different REC take the frequency resource of RE.And different REC takies the frequency resource of RE and comprises at least a in following parameter: the shared bandwidth of different REC, the different REC holding time to the RE specific bandwidth.
Fig. 4 is the schematic diagram that illustrates according to the Microcell combining structure of the embodiment of the present invention.
As shown in the figure, Microcell combination A is comprised of the Microcell that several wireless contacts cover, this Microcell combination A covers a rule or irregular geographic area, wherein, Microcell A1～the A12 that is in the edge zone, geographic area that this Microcell combination A covers adopts RE node described in the invention to realize the covering of Microcell, comprises a REC node in Microcell combination A.
The geographic area that the geographic area that Microcell combination A covers and Microcell combination B, Microcell combination C, Microcell combination D, Microcell combination E, Microcell combination F, Microcell combination G cover is adjacent.In these adjacent Microcell combinations, all there is the REC node.
There is communication link between REC node in RE node 101 in the Microcell A1～A12 of the edge zone, geographic area that Microcell combination A covers and two or more adjacent Microcell combination, by these communication links, carry out following communication between the REC node in the Microcell combination that the RE node 101 in Microcell A1～A12 is adjacent: the RE node receives control and management data, user data from two or more described REC nodes; RE node 101 sends control and management data, user data to two or more REC nodes.
For example, the RE node in Microcell A12 receives control and management data, user data except the REC node that is subordinated to Microcell combination A, can also receive control and management data, user data from the REC node under adjacent Microcell combination B; RE node in Microcell A1 receives control and management data, user data except the REC node that is subordinated to Microcell combination A, can also receive control and management data, user data from adjacent Microcell combination B, the REC node under Microcell combination C.
angle from single Microcell combination, RE node in the Microcell of the edge zone, geographic area that the Microcell combination covers has enlarged the control range of other Microcell combination, angle from a plurality of Microcell networkings, RE node in the Microcell of the edge zone, geographic area that Microcell combination covers has consisted of a co-controlling zone, the generation in co-controlling zone, that has eliminated that traditional Microcell combining structure exists is difficult to realize the problem of diversity between Microcell at cell edge, wireless terminal in the co-controlling zone can be as the terminal that is positioned at Microcell combination center zone, realize diversity communication easily under the control of its service REC node.
The present invention has provided structure and the communication means between the baseband processing unit that is applicable to build distributed single frequency network (SFN) radio network and radio frequency unit.Structural support between SFN baseband processing unit and SFN radio frequency unit is internet topology flexibly, can make the covering that realizes neatly indoor and outdoor based on the SFN radio network of this structure, can realize synchronously by optical fiber between SFN radio frequency unit, also can realize by the measurement of air interface signals synchronous, when this system applies during in Time Division-Synchronous Code Division Multiple Access (TD-SCDMA) system, can solve the shortcoming that each radio-frequency channel underpower because of smart antenna exists on omnidirectional covers.Communication means of the present invention is optimized existing digital transmission technology for the needs of SFN, makes system on the needed service signal of transmission SFN, control signal and measuring-signal, and is more simple efficient.
These are only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (8)
1. a wireless device node, comprise physical layer, link layer, and with management and chain of command service access point, synchronous service accessing points and user's face service access point, it is characterized in that,
Described management and the chain of command service access user face data of naming a person for a particular job is linked on channel by different wave length carrying, to realize the transfer of data between described wireless device node and described a plurality of wireless device control node by described channel by the different wave length carrying, the data of transmitting comprise control and management data and user data;
Wherein, described wireless device node will be sent to respectively described a plurality of wireless device control nodes on different wave length described control and management data and described format of user data turn to a plurality of time division multiplexing frames, and control the described time division multiplexing frame of transmission between node by specific wavelength at described wireless device node and described a plurality of wireless device, wherein, each described time division multiplexing frame comprises for the time slot of described control and management data and the time slot that is used for described user data.
2. distributed radio communication base station that comprises wireless device node claimed in claim 1, described distributed radio communication base station comprises wireless device control node, it is characterized in that, described wireless device node is in described distributed radio communication base station overlay area, is in wireless device node in the fringe region of described overlay area and the wireless device in two or more adjacent distributions formula radio communication base station and controls node and communicate.
3. distributed radio communication base station according to claim 2, it is characterized in that, be in the resource of the described wireless device node in described fringe region and the control and management that working method is subjected to the wireless device control node in two or more adjacent distributions formula radio communication base stations.
4. the communication means of a distributed radio communication base station, it is characterized in that, described distributed radio communication base station comprises the wireless device node that wireless device is controlled node and communicated with two or more wireless devices control nodes that belong to different distributions formula radio communication base station, described wireless device node is controlled node by the transmission link on different wave length and described two or more wireless device that belongs to different distributions formula radio communication base station and is coupled, wherein, described communication means comprises following processing:
Described wireless device node uses different wavelength and described two or more wireless device control node that belongs to different distributions formula radio communication base station to carry out transfer of data, and the data of transmitting comprise control and management data and user data;
Described wireless device node turns to a plurality of time division multiplexing frames with described control and management data and described format of user data respectively on different wave length; And
Control the described time division multiplexing frame of transmission between node by specific wavelength at described wireless device node and described a plurality of wireless device, wherein, each described time division multiplexing frame comprises for the time slot of described control and management data and the time slot that is used for described user data.
5. method according to claim 4, is characterized in that, described control and management data comprise the resource use designation data of current wireless electricity device node.
6. method according to claim 5, is characterized in that, uses designation data to be transferred to all the resource of described wireless device node and need to carry out to described wireless device node the wireless device control node of control and management.
7. method according to claim 5, it is characterized in that, described resource uses designation data to comprise at least a in following data: whole bandwidth of operation of wireless device node, different wireless devices are controlled node the frequency resource of wireless device node are taken.
8. method according to claim 7, it is characterized in that, described different wireless device is controlled node and the frequency resource of wireless device node is taken comprised at least a in following parameter: different wireless devices is controlled the shared bandwidth of node, different wireless devices is controlled node to the holding time of wireless device node specific bandwidth.
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| CN 200710163736 CN101420260B (en) | 2007-10-23 | 2007-10-23 | Radio electric device node, distributed radio communication base station and communication method therefor |
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| CN102076024B (en) | 2009-11-24 | 2014-11-05 | 华为技术有限公司 | Base station, network system and implementation method |
| CN102143499A (en) * | 2011-03-29 | 2011-08-03 | 电信科学技术研究院 | Method, system and equipment for notifying subframe configuration information, and method, system and equipment for configuring subframe |
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| CN1661941A (en) * | 2004-02-23 | 2005-08-31 | 华为技术有限公司 | Distributed base stations and data interactive method |
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