CN102340783A - Method and system for realizing cell networking - Google Patents
Method and system for realizing cell networking Download PDFInfo
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- CN102340783A CN102340783A CN 201110300574 CN201110300574A CN102340783A CN 102340783 A CN102340783 A CN 102340783A CN 201110300574 CN201110300574 CN 201110300574 CN 201110300574 A CN201110300574 A CN 201110300574A CN 102340783 A CN102340783 A CN 102340783A
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Abstract
The invention discloses a method for realizing cell networking, which is used for realizing flexible planning of a cell and cell networking in multiple forms and increasing the frequency spectrum utilization ratio or saving network resources. The method comprises the steps of cell splitting and cell merging. The cell splitting method and the cell merging method comprises cell establishment and cell deletion. The cell splitting method comprises the following steps of: making a statistics on an occupying situation of physical resources on a plurality of antenna on the same cell; determining that the physical resources occupied in the preset time are not less than a preset threshold value persistently and determining that cell splitting needs to the carried out when reaching the preset time; and splitting the same cell into at least two cells, and respectively allocating the plurality of antenna to the at least two cells. The cell merging method is similar to the cell splitting method. The invention also discloses a device for cell planning, a distributed base station and internal units thereof.
Description
The application be to the applying date be that September 21, application number in 2007 are 200710122184.9, the application name is called the dividing an application of patent application of " a kind of method and system that realize cell networking ".
Technical field
The present invention relates to the communications field, particularly relate to the method and system that realize cell networking.
Background technology
A common antenna or the corresponding sub-district of smart antenna that comprises a plurality of antenna elements in the present prior art.Along with developing rapidly of communication user and communication service; Existing local resource can not satisfy the demands, and for communication system is carried out dilatation, a kind of mode is the quantity that increases antenna; To increase local resource, another kind of mode is that multiple signals are merged into one road signal.
In traditional base station system, what between base band and transceiver, transmit is analog signal.Can directly superpose through transmission line, and send to the base band side and handle analog signal.But in the process of transmitting of analog signal, along with the increase of transmission range, analog signal is decay constantly.In the long-distance transmissions process that realizes analog signal; Usually use trunking (like the dried station of putting) that analog signal is carried out processing and amplifying, realize that non-blind area covers, still; In amplified analog signal, also amplified noise signal; Generation has a strong impact on to signal quality, and has bigger power consumption, and there is the not shortcoming of easy care in trunking.
At present, occur a kind of radio frequency remote technology in the prior art, the radio frequency unit in the base station is zoomed out, place near the antenna.In this way; Realized that a Base Band Unit (BBU) can connect a plurality of Remote Radio Unit (RRU); And owing to receive the restriction of existing hardware level; The base band demodulating of BBU can only support to be no more than many antennas of designed capacity, and for example a BBU supports 6 number of sub-carrier (representing with C), 8 antennas (representing with A) at most, then supports 48 road signals at most.Because there are some defectives in analog signal, then consider to realize that through the mode that increases antenna amount non-blind area covers, and the disposal ability of a BBU is limited, so this just needs to increase the dilatation that BBU realizes communication system.Yet the cost of BBU brings pressure than higher to dilatation work.And, all need artificial antenna and the corresponding RRU of setting up during each dilatation communication system, possibly further need set up BBU, this mode takies more human resources.If just build more antenna and sub-district, then cause the waste of telecommunication system resources at the networking initial stage.
It is thus clear that; Prior art is in order to satisfy the demand of communication service development, and a kind of mode is to support more semaphore through the mode of superposed simulation signal, covers to realize non-blind area; But this mode exists transmission range shorter, receives noise signal to disturb bigger problem.Another kind of mode is through the continuous dilatation communication system of the mode of manual work, but needs more human resources.Another mode is just to build more antenna and sub-district at the networking initial stage, but causes the waste of telecommunication system resources.
Summary of the invention
The embodiment of the invention provides a kind of method and system that realize cell networking, is used to realize the flexible planning of sub-district and the cell networking of various ways, improves the availability of frequency spectrum or saves Internet resources.
A kind of sub-district delet method of distributed base station may further comprise the steps:
Delete in the many antennas of corresponding same sub-district common signal channel and dedicated channel at least one antenna;
The state of sub-district on the said at least one antenna and common signal channel is changed to do not exist;
Remove the Radio Link on the said at least one antenna.
A kind of cell splitting method may further comprise the steps:
The physical resource of adding up on the many antennas of corresponding same sub-district takies situation;
Confirm that the physical resource that in the preset time, has taken continues to be not less than preset threshold value, and when reaching preset time, confirm to carry out cell splitting;
Said same cell splitting is at least two sub-districts, and said many antennas are configured to said at least two sub-districts respectively.
A kind of sub-district merging method may further comprise the steps:
The physical resource of adding up in each sub-district takies situation;
At least two sub-districts of definite existence; For each sub-district at least two sub-districts; The physical resource that in the preset time, has taken continues to be not more than preset threshold value, and confirms to carry out the sub-district when all reaching preset time at least in said two sub-districts and merge;
A sub-district is merged in said at least two sub-districts, is a said sub-district with many antenna configurations of former said at least two sub-districts of correspondence.
A kind of device that is used to plan cell networking comprises:
Statistic unit, the physical resource that is used to add up on the many antennas of corresponding same sub-district takies situation;
Control unit is used to confirm that the physical resource that in the preset time, has taken continues to be not less than preset threshold value, and when reaching preset time, confirms to carry out cell splitting;
Dispensing unit is used for said same cell splitting is at least two sub-districts, and said many antennas is configured to said at least two sub-districts respectively.
A kind of RRU comprises:
External interface unit is used for receiving and sending message;
Radio frequency unit is used to connect many antennas, and receives from the radiofrequency signal of many antennas and to many antenna transmission radiofrequency signals;
Dispensing unit is used for setting up the said many antenna configurations that request message will connect according to the sub-district that receives and is at least one sub-district, and according to the sub-district deletion request message that receives, and the local resource at least one antenna in the said many antennas is deleted.
A kind of distributed base station comprises:
Antenna is used for receiving and the launching simulation radiofrequency signal;
Radio frequency remote unit RRU; Be connected with many antennas; Be used for setting up request message at least one sub-district of many antenna configurations for connecting according to the sub-district that receives; And according to the sub-district deletion request message that receives, with the deletion of the local resource at least one antenna in the many antennas under the same sub-district;
Base Band Unit BBU is used to handle the digital signal from RRU.
A kind of distributed base station comprises:
Antenna is used for receiving and the launching simulation radiofrequency signal;
A plurality of RRU, being respectively applied for and setting up request message according to the sub-district that receives is a locally-attached antenna configurations local resource, and according to the sub-district deletion request message that receives, the local resource on the locally-attached antenna is deleted; Wherein, the many antenna configurations of said a plurality of RRU have identical local resource;
BBU is used for the digital signal from RRU is handled.
A kind of distributed base station comprises:
Antenna is used for receiving and the launching simulation radiofrequency signal;
Radio frequency remote unit RRU; Be connected with many antennas, send after being used for converting analog radio-frequency signal into digital signal, wherein from many antennas; The corresponding same sub-district of said many antennas, or each the part antenna in the said many antennas corresponds to different sub-districts respectively;
Base Band Unit BBU is used to handle the digital signal from RRU.
A kind of distributed base station comprises:
Antenna is used for receiving and the launching simulation radiofrequency signal;
A plurality of RRU, each RRU comprise an antenna, send after being used for converting the analog radio-frequency signal from antenna into digital signal; Wherein, the corresponding same sub-district of the many antennas of said a plurality of RRU;
BBU is used for the digital signal from RRU is handled.
A kind of device that is used for the sub-district deletion of distributed base station comprises:
The channel removing module is used for deleting common signal channel and dedicated channel at least one antenna of many antennas of corresponding same sub-district;
Status control module is used for state with sub-district on the said at least one antenna and common signal channel and is changed to and does not exist;
Link control module is used to remove the Radio Link on the said at least one antenna.
Said many antennas belong to identical or different RRU.
Said at least one antenna is common antenna, or is the smart antenna that comprises a plurality of antenna elements, or is poliarizing antenna.
The channel removing module is deleted common signal channel and dedicated channel on the many antennas under the said same sub-district according to a sub-district deletion request message.
The embodiment of the invention provides the method for plot planning; Comprise that sub-district deletion, cell splitting and sub-district merge; Realized the flexible networking of sub-district, can carry out dynamic plot planning and networking, saved human resources or improved communication transmission quality according to actual environment.And the embodiment of the invention provides the device that is used to plan the sub-district and distributed base station etc., has realized cell networking flexibly.
Description of drawings
Figure 1A-Fig. 8 is the structure chart of distributed base station in the embodiment of the invention;
Fig. 9 is the main method flow chart that the sub-district is set up in the embodiment of the invention;
Figure 10 is the method flow diagram that the sub-district was set up when RNC initiation sub-district was set up in the embodiment of the invention;
Figure 11 is the method flow diagram that the sub-district was set up when OMC initiation sub-district was set up in the embodiment of the invention;
Figure 12 is the method flow diagram that the sub-district was set up when evolution base station initiation sub-district was set up in the embodiment of the invention;
Figure 13 is the main method flow chart of sub-district deletion in the embodiment of the invention;
Figure 14 is the concrete grammar flow chart of sub-district deletion in the embodiment of the invention;
Figure 15 is the main method flow chart of cell splitting in the embodiment of the invention;
Figure 16 A is the concrete grammar flow chart that carries out cell splitting in the embodiment of the invention according to transmitting power;
Figure 16 B is the concrete grammar flow chart that carries out cell splitting in the embodiment of the invention according to code channel resource;
Figure 17 is the method flow diagram that the sub-district merges in the embodiment of the invention;
Figure 18 is the basic block diagram of RRU in the embodiment of the invention;
Figure 19 is the detailed structure view of RRU in the embodiment of the invention;
Figure 20 is the structure chart of plot planning unit in the embodiment of the invention;
Figure 21 is the structure chart of RNC in the embodiment of the invention.
Embodiment
The embodiment of the invention makes the corresponding sub-district of many antennas according to the environment of reality, to save local resource, perhaps makes the corresponding a plurality of sub-districts of many antennas, to satisfy the demand of communication service or communication user.
Local resource in the embodiment of the invention comprises local district identification, training sequence and physical resource etc., and physical resource comprises transmitting power and code channel resource etc.
Distributed base station in the embodiment of the invention (abbreviation base station) comprises UMTS (Universal Mobile Telecommunication System; UMTS) base station under (Node B) and Long Term Evolution (Long Time Evolution, LTE) evolution base station under the system (Evolved Node B).Antenna in the embodiment of the invention comprises common antenna, have smart antenna and non intelligent antenna (like poliarizing antenna) of a plurality of antenna elements etc.In the present embodiment antenna is confirmed as a passage, the RRU that connects many antennas is multichannel RRU, and the RRU that connects single antenna is single channel RRU.
Distributed base station in the embodiment of the invention (abbreviation base station) comprises antenna, BBU and the RRU (comprising multichannel RRU and single channel RRU) etc. that are used to receive and send analog radio-frequency signal.Distributed base station can comprise a plurality of RRU, and a plurality of RRU can be parallel connection, series connection or series-parallel connection relation.Said series-parallel connection relation is meant: a plurality of RRU that constitute series relationship constitute parallelly connected relation with other one or more RRU, and all RRU in these series relationship and the parallel connection relation constitute the series-parallel connection relation jointly.Can initiate in the embodiment of the invention sub-district set up equipment with the sub-district deletion comprise radio network controller (Radio Network Controller, RNC), operation maintenance center (Operation & Maintenance Center, OMC) and evolution base station etc.
BBU in the distributed base station is used for the processing of baseband digital signal.When carrying out the planning of cell networking by RNC or OMC, BBU also is used to transmit the sub-district that RNC or OMC send and sets up request message and sub-district deletion request message.When carrying out the planning of cell networking by evolution base station; Distributed base station comprises plot planning unit 101, and shown in Figure 1A, this plot planning unit 101 is used to plan the sub-district; Confirm foundation and deletion of sub-district etc.; Generate and send the sub-district and set up request message and sub-district deletion request message, can directly send to RRU, perhaps be transmitted to RRU through BBU.This plot planning unit 101 also can belong to BBU, is equivalent to undertaken by BBU the planning of cell networking.Wherein, BBU can constitute the BBU resource pool for a plurality of, and common RRU for connection provides service.
RRU sends after being used for converting the analog radio-frequency signal that many antennas that connect receive into digital signal, and the digital signal of receiving is converted into behind the analog radio-frequency signal through many antenna transmission, and these many antennas are sub-district of correspondence at least.RRU also is used for setting up request message at least one sub-district of many antenna configurations for connecting according to the sub-district that receives, and according to the sub-district deletion request message that receives, with the local resource deletion at least one antenna in the said many antennas.BBU is connected instance shown in Figure 1B with multichannel RRU's.A plurality of multichannel RRU also can corresponding sub-district, perhaps part antenna on multichannel RRU and the corresponding sub-district of antenna on other multichannel RRU or the single channel RRU.This multichannel RRU can be connected with a plurality of single channel RRU, a plurality of RRU of the prior art, constitutes series, parallel or series-parallel connection relation, and multichannel RRU, single channel RRU and RRU of the prior art can corresponding sub-districts.
Perhaps, RRU sends after being used for converting the analog radio-frequency signal that an antenna that connects receives into digital signal, and the digital signal of receiving is converted into behind the analog radio-frequency signal through an antenna transmission.This RRU also is used for setting up request message sub-district of an antenna configurations for connecting according to the sub-district that receives, and according to the sub-district deletion request message that receives, the local resource on the said antenna is deleted.A plurality of single channel RRU can corresponding sub-district, BBU and single channel RRU to be connected instance as shown in Figure 2.This single channel RRU can be connected with a plurality of multichannel RRU, a plurality of RRU of the prior art, constitutes series, parallel or series-parallel connection relation.
A BBU can connect a plurality of RRU, and present embodiment provides the instance of the RRU that a BBU connects a plurality of series relationship as shown in Figure 3.
Distributed base station also can comprise one or more baseband interfaces unit (BIU), and shown in Fig. 2,4-8, BIU is used to transmit the digital signal between BBU and the RRU, and RRU can be connected with any BBU, makes network construction form more flexible.
Can know through the foregoing description; A BBU has connected many antennas that surpass its designed capacity; And BBU must handle the signal from more antenna in its designed capacity scope; Present embodiment provides the method for merging from the digital signal of many antennas, makes BBU handle the multi-path digital signal that meets designed capacity.
The method that merges digital signal is: according to the time synchronized principle, carry out the multi-path digital signal of same subcarrier of correspondence and same sub-district vector superposed.Multi-path digital signal with corresponding same sub-carrier and same sub-district on the I component direction; Carry out overlap-add operation according to identical time location; And, carry out overlap-add operation according to identical time location with the multi-path digital signal of corresponding same sub-carrier and same sub-district on the Q component direction.In the present embodiment, digital signal being regarded as the continuous combination of " 1 " and " 0 ", is 1100 like the data of a way word signal on a time point, and each " 1 " or " 0 " promptly are data.According to identical time point, the stack of multi-path digital signal is the data step-by-step addition of multi-path digital signal, carries out the operation of binary addition.Present embodiment is described further through Mathematical Modeling.Suppose that the digital signal of certain time point is expressed as the form of an+jbn, a representes the data on the I component direction, and j representes Q component, and then b representes the data on the Q component direction, and n gets different values to identify each way word signal.So, the merging process of digital signal can be expressed as:
(a1+j＊b1)+(a2+j＊b2)+...+(an+j＊bn)＝(a1+a2+...+an)+j＊(b1+b2+...+bn)
The inner a plurality of unit of distributed base station all can carry out the union operation of digital signal, all can carry out union operation like BBU, BIU and RRU.
Understood the structure of distributed base station, just can carry out the operation of plot planning, comprised that the sub-district is set up and the sub-district deletion.
Referring to Fig. 9, the main method flow process that the sub-district is set up in the present embodiment is following:
Step 901: be at least two local district identifications that antenna assignment is identical.
Step 902: be said at least two antenna configurations peak power outputs.
Step 903: be said at least two antenna configurations training sequences and channel resource etc.
The said method flow process has realized the corresponding sub-district of many antennas, can adopt the branch collection of mimo system or multiplex technique to improve the transmission quality in the sub-district or improve the bearing capacity of sub-district.The method of setting up in the face of the sub-district down is described in detail, and first kind of situation is that process is set up in RNC initiation sub-district, and referring to shown in Figure 10, the concrete grammar flow process is following:
Step 1001:RNC initiates the resource audit process, sends audit request information to Node B, and notice Node B carries out the resource audit.Perhaps, Node B is periodically initiatively to RNC report auditing result.
The audit response message that step 1002:RNC returns according to Node B confirms that needs carry out the sub-district and set up.
Step 1003:RNC sends the sub-district to Node B and sets up request message.
RNC can to indicate Node B be concrete antenna configurations local resource through set up in the request message mode that increases cell in the sub-district; Cell as (T1, T3, T5); Be expressed as the identical local resource of antenna configurations that is designated T1, T3 and T5, i.e. the corresponding same sub-district of antenna T1, T3 and T5.Can further increase cell, like (R1 (T1, T3 about RRU; T5), R3 (T1, T2; T4)), be expressed as the antenna that is designated T1, T3 and T5 on the RRU that is designated R1 and be designated the identical local resource of the antenna configurations that is designated T1, T2 and T4 on the RRU of R3.Perhaps, to set up request message indication Node B be the many local resources (identical local district identification is put in outstanding assignment) that antenna configurations is identical to RNC through repeatedly sending the sub-district.Perhaps, to set up request message indication Node B be the different local resource (different local district identifications is put in outstanding assignment) of many antenna configurations on the RRU to RNC through repeatedly sending the sub-district.
RNC can be further to indicate Node B be a plurality of sub-districts of antenna configurations through set up the mode that increases cell in the request message in the sub-district, like configuration single-frequency point sub-district.
It is the many local district identifications that antenna assignment is identical that step 1004:Node B sets up request message according to the sub-district of receiving, and preserves allocation result.Local district identification is the sign of distinguishing cell, as long as the local district identification in two zones is different, then these two zones belong to different sub-districts.
Node B can set up the antenna sign of carrying in the request message according to the sub-district corresponding antenna is configured.Perhaps, set up when the sub-district and not carry antenna when sign in the request message, Node B confirms that according to auditing result needs carry out the antenna that the sub-district is set up, and sets up request message according to the sub-district corresponding antenna is configured.
It is many antenna configurations peak power outputs that step 1005:Node B sets up request message according to the sub-district of receiving.
It is many antenna configurations channel resources that step 1006:Node B sets up request message according to the sub-district of receiving, sets up CPICH, PSCH, SSCH, PCCPCH, BCH.
Second kind of situation is that process is set up in OMC initiation sub-district, and referring to shown in Figure 11, the concrete grammar flow process is following:
Step 1101:OMC triggers RNC through control messages and begins sub-district foundation.
Step 1102:RNC sets up request message to Node B transmission sub-district after receiving control messages.
It is the many local district identifications that antenna assignment is identical that step 1103:Node B sets up request message according to the sub-district of receiving, and preserves allocation result.Wherein, Node B knows that according to the control messages that the OMC that receives sends needs carry out the antenna of cell configuration.
It is many antenna configurations peak power outputs that step 1104:Node B sets up request message according to the sub-district of receiving.
It is many antenna configurations channel resources that step 1105:Node B sets up request message according to the sub-district of receiving.
The evolution base station that OMC also can trigger in the LTE system begins sub-district foundation, according to the control messages that OMC sends corresponding many antennas is carried out cell configuration by evolution base station, to set up the sub-district.
The third situation is in the LTE system, to initiate the sub-district by evolution base station to set up process, and referring to shown in Figure 12, the concrete grammar flow process is following:
Step 1201: evolution base station is initiated the sub-district according to the situation of physical resource and logical resource and is set up.
Step 1202: evolution base station is the many local district identifications that antenna assignment is identical, and preserves allocation result.
Step 1203: evolution base station is many antenna configurations peak power outputs.
Step 1204: evolution base station is many antenna configurations channel resources.
Referring to Figure 13, the main method flow process of sub-district deletion is following in the present embodiment:
Step 1301: delete in the many antennas of corresponding same sub-district common signal channel and dedicated channel at least one antenna.
Step 1302: the state of sub-district on the said at least one antenna and common signal channel is changed to do not exist.
Step 1303: remove the Radio Link on the said at least one antenna.
Referring to Figure 14, the concrete grammar flow process of sub-district deletion is following in the present embodiment:
Step 1401: the operation of sub-district is confirmed to delete in the base station.
The base station can confirm that needs remove the local resource of certain antenna according to the situation of physical resource and logical resource, i.e. all or part of sub-district of deletion.Perhaps; The sub-district deletion request message that send according to RNC the base station confirms that needs delete the operation of sub-district; Wherein, Can initiate the sub-district deletion action by RNC or OMC, the base station can perhaps be deleted the local resource on the many antennas under the same sub-district respectively according to many sub-district deletion request messages of receiving according to the local resource on many antennas of a sub-district deletion request message deletion of receiving.
Perhaps, when an a plurality of sub-district of antenna correspondence, the part or all of sub-district on the antenna can be deleted in the base station.
Step 1402: common signal channel and the dedicated channel at least one antenna deleted in the many antennas of corresponding same sub-district in the base station.
Step 1403: the base station is changed to the state of sub-district on the said at least one antenna and common signal channel and does not exist.
Step 1404: the Radio Link on the said at least one antenna is removed in the base station.
Understood the method that the sub-district is set up and delete the sub-district through the description of the foregoing description, so just can further realize change, planned the sub-district again, comprised that cell splitting and sub-district merge about the cell networking of many antennas about many antennas.
Cell splitting is to be a plurality of sub-districts with a cell splitting, can be corresponding sub-districts of many antennas of deletion, be at least two sub-districts of many antennas foundation then; Perhaps, delete the local resource of many antenna middle part divided antennas of corresponding same sub-district, set up new sub-district for this part antenna then.Cell splitting can adapt to the growth requirement of communication service and communication user; Also be applicable to the change of multiple actual environment; Like a newly-built skyscraper between two antennas of the same sub-district of correspondence; Then cause these two antenna coverage areas to be isolated, stop the transmission of wireless signal, and possibly cause increasing sharply of communication service and communication user.The cell splitting process can be controlled through OMC.Present embodiment provides a kind of method of dynamically carrying out cell splitting, and with flexible adaptation actual surrounding enviroment and wireless transmission requirement, referring to shown in Figure 15, the main method flow process is following:
Step 1501: add up that total physical resource takies situation on the many antennas of corresponding same sub-district.Can carry out statistical operation to all sub-districts simultaneously, present embodiment is that example is elaborated with a sub-district.
Step 1502: confirm that the physical resource that in the preset time, has taken continues to be not less than preset threshold value, and when reaching preset time, confirm to carry out cell splitting.
Step 1503: said same cell splitting is at least two sub-districts, and said many antennas are configured to said at least two sub-districts respectively.
Wherein, physical resource comprises transmitting power and code channel resource etc., can carry out cell splitting according to each physical resource, is described in detail respectively below.
Referring to Figure 16 A, the concrete grammar flow process of carrying out cell splitting according to transmitting power is following:
Step 1601: total transmitting power of adding up many antennas of corresponding same sub-district.
Step 1602: when total transmitting power reaches power division threshold value, begin to carry out timing.
Step 1603: whether the time of judging timing reaches the preset time, and judges whether total transmitting power continues to meet or exceed power division threshold value.
Step 1604: when the time of timing reaches the preset time and always transmitting power continues to meet or exceed power division threshold value, initiate the cell splitting operation.Continue step 1606.For example, maximum transmission power is m watt, and the preset time is n days, and power division threshold value is 10 watts, when total transmitting power 10 between m and lasting n days the time, confirm to carry out cell splitting.
Step 1605: when the time of timing does not reach preset total transmitting power of time and just drops to power division threshold value when following, to the time zero clearing of timing.Can continue step 1601.
Step 1606 a: cell splitting is at least two sub-districts.Concrete mode has multiple, as deletes the local resource on said at least two antennas, and is respectively the different local resource of said at least two antenna configurations; Perhaps, delete in said two antennas the local resource on the antenna at least, and be different from the local resource of said same sub-district for a said antenna configurations.Can continue step 1601.
Referring to Figure 16 B, the concrete grammar flow process of carrying out cell splitting according to transmitting power is following:
Step 1611: add up that total code channel resource takies situation on the many antennas of corresponding same sub-district, concrete mode is that telephone traffic is added up.
Step 1612: when the code channel resource that has taken reaches code channel division threshold value, begin to carry out timing.
Step 1613: whether the time of judging timing reaches the preset time, and judges whether total transmitting power continues to meet or exceed code channel division threshold value.
Step 1614: reach the preset time and the code channel resource that taken when continuing to meet or exceed code channel division threshold value when the time of timing, initiate the cell splitting operation.Continue step 1616.
Step 1615: when the time of timing does not reach code channel resource that the preset time taken and just drops to code channel division threshold value when following, to the time zero clearing of timing.Can continue step 1611.
Step 1616 a: cell splitting is at least two sub-districts.Concrete mode has multiple, as deletes the local resource on said at least two antennas, and is respectively the different local resource of said at least two antenna configurations; Perhaps, delete in said two antennas the local resource on the antenna at least, and be different from the local resource of said same sub-district for a said antenna configurations.Can continue step 1611.
Above-mentioned two embodiment carry out the method description of cell splitting according to transmitting power and code channel resource respectively; Can further above-mentioned two embodiment be combined; When in transmitting power and code channel resource are reaching preset time, all continuing to be not less than separately corresponding threshold, confirm to carry out cell splitting.
The process corresponding with the cell splitting process is that the sub-district merges, and it is that a sub-district is merged in a plurality of sub-districts that the sub-district merges.Promptly delete the local resource on the many antennas of corresponding a plurality of sub-districts, identical to these many antenna configurations again local resource; Perhaps, the local resource on the many antennas of a sub-district of deletion, identical to these many antenna configurations again local resource with another sub-district.The sub-district merges the change that is applicable to multiple actual environment, is removed like the skyscraper between adjacent two sub-districts, and the transmission path of the wireless signal that then originally stopped becomes unimpeded, and possibly cause the rapid minimizing of communication service and communication user.The sub-district merging process can be controlled through OMC.Present embodiment provides a kind of method that the sub-district merges of dynamically carrying out, and with the actual surrounding enviroment of flexible adaptation, referring to shown in Figure 17, method flow is following:
Step 1701: the physical resource of adding up in each sub-district takies situation.
Step 1702: confirm to exist at least two sub-districts; For each sub-district at least two sub-districts; The physical resource that in the preset time, has taken continues to be not more than preset threshold value (claiming to merge threshold value in the present embodiment), and confirms to carry out the sub-district when all reaching preset time at least in said two sub-districts and merge.
Step 1703: a sub-district is merged in said at least two sub-districts, is a said sub-district with many antenna configurations of former said at least two sub-districts of correspondence.Concrete implementation has multiple, as deletes said at least two sub-districts, is the identical local resource of many antenna configurations under said at least two sub-districts again; , be this sub-district corresponding antenna configuration local resource identical perhaps with another sub-district as deleting in said two sub-districts the local resource on the sub-district corresponding antenna at least.
Wherein, physical resource comprises transmitting power and code channel resource etc., can carry out cell splitting according to each or several physical resources.
Understood the structure of distributed base station and the method for plot planning through the description of the foregoing description, faced the structure of the internal element of distributed base station down and describe.
Referring to Figure 18, the RRU in the present embodiment comprises external interface unit 1801, radio frequency unit 1802 and dispensing unit 1803.
It is at least one sub-district that dispensing unit 1803 is used for setting up the said many antenna configurations that request message will connect according to the sub-district that receives; And according to the sub-district deletion request message that receives, with the deletion of the local resource at least one antenna in the said many antennas.
RRU also comprises intermediate frequency unit 1804 and merge cells 1805, referring to shown in Figure 19.
Referring to Figure 20, be used in the present embodiment planning that the device (present embodiment is claimed the plot planning unit) of sub-district comprises statistic unit 2001, control unit 2002 and dispensing unit 2003.
The physical resource that statistic unit 2001 is used to add up many antennas of corresponding same sub-district takies situation.
Control unit 2002 is used for confirming that the physical resource that has taken is not less than preset division threshold value in the certain hour scope, and confirms to carry out cell splitting; And; At least two sub-districts of definite existence; For each sub-district at least two sub-districts, the physical resource that in the preset time, has taken continues to be not more than preset merging threshold value, and confirms to carry out the sub-district when all reaching preset time at least in said two sub-districts and merge.
Dispensing unit 2003 is used for reaching preset time range and the physical resource that taken when continuing to meet or exceed the division threshold value when the time of timing; Generate sub-district deletion request message and sub-district and set up request message and transmission; With said same cell splitting is two sub-districts, respectively corresponding said two sub-districts of said at least two antennas; And; When the time of timing reaches preset time range and the physical resource that taken continues to be no more than when merging threshold value; Generate sub-district deletion request message and sub-district and set up request message and transmission; A sub-district is merged in said at least two sub-districts, is a said sub-district with many antenna configurations of former said at least two sub-districts of correspondence.
Said plot planning unit can belong to RNC, OMC or evolution base station.The plot planning unit can exist with unit independently in evolution base station; Perhaps global existence is in evolution base station in the existing unit; As belong to BBU, and perhaps be present in a plurality of unit in the evolution base station, can be arranged in RRU like statistic unit 2001; Control unit 2002 can be arranged in RRU or BBU, and dispensing unit 2003 can be arranged in BBU.
Referring to Figure 21, the RNC in the present embodiment comprises interface unit 2101 and plot planning unit 2102.
By said interface unit 2101 when confirming to carry out cell splitting; Send about the message that is two sub-districts with said same cell splitting to the base station; And when confirming that need carry out the sub-district merges, send about a plurality of sub-districts being merged into the message of a sub-district to the base station.
Structure and RNC when OMC comprises the plot planning unit are similar, repeat no more at this.
The embodiment of the invention provides the method for plot planning; Comprise that sub-district deletion, cell splitting and sub-district merge; Realized the flexible networking of sub-district, can carry out dynamic plot planning and networking, saved human resources and improved communication transmission quality according to actual environment.And the embodiment of the invention provides the device that is used to plan the sub-district and distributed base station etc., has realized cell networking flexibly.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, belong within the scope of claim of the present invention and equivalent technologies thereof if of the present invention these are revised with modification, then the present invention also is intended to comprise these changes and modification interior.
Claims (32)
1. the sub-district delet method of a distributed base station is characterized in that, may further comprise the steps:
Delete in the many antennas of corresponding same sub-district common signal channel and dedicated channel at least one antenna;
The state of sub-district on the said at least one antenna and common signal channel is changed to do not exist;
Remove the Radio Link on the said at least one antenna.
2. sub-district as claimed in claim 1 delet method is characterized in that, said many antennas belong to identical or different RRU.
3. sub-district as claimed in claim 1 delet method is characterized in that, said at least one antenna is common antenna, or is the smart antenna that comprises a plurality of antenna elements, or is poliarizing antenna.
4. sub-district as claimed in claim 1 delet method is characterized in that, deletes common signal channel and dedicated channel on the many antennas under the said same sub-district according to a sub-district deletion request message.
5. a device that is used for the sub-district deletion of distributed base station is characterized in that, comprising:
The channel removing module is used for deleting common signal channel and dedicated channel at least one antenna of many antennas of corresponding same sub-district;
Status control module is used for state with sub-district on the said at least one antenna and common signal channel and is changed to and does not exist;
Link control module is used to remove the Radio Link on the said at least one antenna.
6. device as claimed in claim 5 is characterized in that, said many antennas belong to identical or different RRU.
7. device as claimed in claim 5 is characterized in that, said at least one antenna is common antenna, or is the smart antenna that comprises a plurality of antenna elements, or is poliarizing antenna.
8. device as claimed in claim 5 is characterized in that, the channel removing module is deleted common signal channel and dedicated channel on the many antennas under the said same sub-district according to a sub-district deletion request message.
9. a RRU is characterized in that, comprising:
External interface unit is used for receiving and sending message;
Radio frequency unit is used to connect many antennas, and receives from the radiofrequency signal of many antennas and to many antenna transmission radiofrequency signals;
Dispensing unit is used for setting up the said many antenna configurations that request message will connect according to the sub-district that receives and is at least one sub-district, and according to the sub-district deletion request message that receives, and the local resource at least one antenna in the said many antennas is deleted.
10. RRU as claimed in claim 9 is characterized in that, also comprises:
Merge cells is used for carrying out vector superposed according to identical time location the digital signal of corresponding same sub-carrier on the many antennas of the corresponding same sub-district of digital uplink signal.
11. a distributed base station is characterized in that, comprising:
Antenna is used for receiving and the launching simulation radiofrequency signal;
Radio frequency remote unit RRU; Be connected with many antennas; Be used for setting up request message at least one sub-district of many antenna configurations for connecting according to the sub-district that receives; And according to the sub-district deletion request message that receives, with the deletion of the local resource at least one antenna in the many antennas under the same sub-district;
Base Band Unit BBU is used to handle the digital signal from RRU.
12. distributed base station as claimed in claim 11 is characterized in that, sets up request message and sub-district deletion request message by said BBU to the sub-district that said RRU transmits RNC or OMC transmission.
13. distributed base station as claimed in claim 11 is characterized in that, sends the sub-district by OMC to said RRU and sets up request message and sub-district deletion request message.
14. distributed base station as claimed in claim 11 is characterized in that, comprising:
The plot planning unit is used to carry out plot planning, and sends the sub-district to said RRU and set up request message and sub-district deletion request message.
15. distributed base station as claimed in claim 14 is characterized in that, the plot planning unit is positioned at BBU.
16. distributed base station as claimed in claim 11 is characterized in that, comprises a plurality of said RRU, a plurality of said RRU are series, parallel or series-parallel connection relation; And/or
Other RRU that said RRU and said distributed base station comprise is the serial or parallel connection relation.
17. distributed base station as claimed in claim 16 is characterized in that, the corresponding same sub-district of at least one antenna at least one antenna among a plurality of said RRU on said RRU and other said RRU.
18. a distributed base station is characterized in that, comprising:
Antenna is used for receiving and the launching simulation radiofrequency signal;
A plurality of RRU, being respectively applied for and setting up request message according to the sub-district that receives is a locally-attached antenna configurations local resource, and according to the sub-district deletion request message that receives, the local resource on the locally-attached antenna is deleted; Wherein, the many antenna configurations of said a plurality of RRU have identical local resource;
BBU is used for the digital signal from RRU is handled.
19. distributed base station as claimed in claim 18 is characterized in that, said a plurality of RRU are series, parallel or series-parallel connection relation; With
Other RRU that said a plurality of RRU and said distributed base station comprise is the serial or parallel connection relation.
20. distributed base station as claimed in claim 18 is characterized in that, sets up request message and sub-district deletion request message by said BBU to the sub-district that said RRU transmits RNC or OMC transmission.
21. distributed base station as claimed in claim 18 is characterized in that, sends the sub-district by OMC to said RRU and sets up request message and sub-district deletion request message.
22. distributed base station as claimed in claim 18 is characterized in that, comprising:
The plot planning unit is used to carry out plot planning, and sends the sub-district to said RRU and set up request message and sub-district deletion request message.
23. a distributed base station is characterized in that, comprising:
Antenna is used for receiving and the launching simulation radiofrequency signal;
Radio frequency remote unit RRU; Be connected with many antennas, send after being used for converting analog radio-frequency signal into digital signal, wherein from many antennas; The corresponding same sub-district of said many antennas, or each the part antenna in the said many antennas corresponds to different sub-districts respectively;
Base Band Unit BBU is used to handle the digital signal from RRU.
24. distributed base station as claimed in claim 23 is characterized in that, comprises a plurality of said RRU, a plurality of said RRU are series, parallel or series-parallel connection relation; And/or
Other RRU that said RRU and said distributed base station comprise is the serial or parallel connection relation.
25. distributed base station as claimed in claim 24 is characterized in that, the corresponding same sub-district of at least one antenna among at least two RRU on each RRU.
26. distributed base station as claimed in claim 25 is characterized in that, the corresponding same sub-district of all RRU that said distributed base station comprises.
27. distributed base station as claimed in claim 23 is characterized in that, also comprises:
Baseband interface unit B IU is used between said BBU and said RRU, transmitting digital signal.
28. distributed base station as claimed in claim 27 is characterized in that, said RRU is a plurality of, and said BIU is a plurality of; A plurality of said RRU are connected with said BBU through a plurality of said BIU respectively.
29. distributed base station as claimed in claim 23 is characterized in that, distributed base station comprises a plurality of said BBU.
30. a distributed base station is characterized in that, comprising:
Antenna is used for receiving and the launching simulation radiofrequency signal;
A plurality of RRU, each RRU comprise an antenna, send after being used for converting the analog radio-frequency signal from antenna into digital signal; Wherein, the corresponding same sub-district of the many antennas of said a plurality of RRU;
BBU is used for the digital signal from RRU is handled.
31. distributed base station as claimed in claim 30 is characterized in that, said a plurality of RRU are series, parallel or series-parallel connection relation; With
Other RRU that said a plurality of RRU and said distributed base station comprise is the serial or parallel connection relation.
32. distributed base station as claimed in claim 30 is characterized in that, also comprises:
One or more baseband interface unit B IU are used between said BBU and said a plurality of RRU, transmitting digital signal.
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|---|---|---|---|
| CN 201110300574 CN102340783A (en) | 2007-09-21 | 2007-09-21 | Method and system for realizing cell networking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 201110300574 CN102340783A (en) | 2007-09-21 | 2007-09-21 | Method and system for realizing cell networking |
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|---|---|---|---|
| CN 200710122184 Division CN101394647B (en) | 2007-09-21 | 2007-09-21 | Method and system for realizing cell networking |
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| CN102340783A true CN102340783A (en) | 2012-02-01 |
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| CN 201110300574 Pending CN102340783A (en) | 2007-09-21 | 2007-09-21 | Method and system for realizing cell networking |
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| WO2013189402A3 (en) * | 2012-12-07 | 2014-02-13 | 中兴通讯股份有限公司 | Cell combination method for a plurality of small cells, management method, and system |
| WO2014056162A1 (en) * | 2012-10-10 | 2014-04-17 | 华为技术有限公司 | Method for communication through distributed antenna array system and array system |
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| WO2015101069A1 (en) * | 2013-12-30 | 2015-07-09 | 华为技术有限公司 | Control method and device |
| WO2016008132A1 (en) * | 2014-07-17 | 2016-01-21 | 华为技术有限公司 | Distributed base station |
| CN105338539A (en) * | 2015-11-25 | 2016-02-17 | 中国联合网络通信集团有限公司 | Cell merging method and device |
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| CN106332180A (en) * | 2015-06-24 | 2017-01-11 | 中国移动通信集团江苏有限公司 | Load balancing method and device |
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Application publication date: 20120201 |