CN101854643A - Wireless resource multiplexing method and equipment and system thereof - Google Patents
Wireless resource multiplexing method and equipment and system thereof Download PDFInfo
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- CN101854643A CN101854643A CN200910113958A CN200910113958A CN101854643A CN 101854643 A CN101854643 A CN 101854643A CN 200910113958 A CN200910113958 A CN 200910113958A CN 200910113958 A CN200910113958 A CN 200910113958A CN 101854643 A CN101854643 A CN 101854643A
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Abstract
The invention discloses a wireless resource multiplexing method and equipment and a system thereof, which are applied to a communication system adopting a distributed base station. The distributed base station comprises a BBU and an RRU, wherein the RRU supports one or more RRUBs. The method comprises the following steps of: determining other users for performing resource multiplexing with a first user in accordance with a multiplexing requirement through the BBU; and multiplexing the first user to the wireless resource used by the users which belong to different RRUs or RRUBs as the first user in other users. The method can reduce the co-channel interference probability, increases the user capacity of a single cell and can be applied to R4 service.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of wireless resource multiplexing method, base station baseband processing unit equipment, radio network controller and allocation of radio resources system.
Background technology
Existing TD-SCDMA (Time Division-Synchronous Code Division Multiple Access, the TD SDMA access technology) the doubly fast space division multiplexing technology of the HSPAMX in the system, need not to increase carrier resource, need not to revise user terminal, need not to adjust the network planning, not changing TD eats dishes without rice or wine under the situation of technology, utilize the spatial separation of smart antenna or the floor between the indoor cell multichannel to isolate and realize that code channel is multiplexing, reach the effect that increases substantially the TD availability of frequency spectrum and system data throughput, can significantly improve TD-HSPA (Time Division High-Speed Packet Access, time division high speed grouping access) throughput of system, thereby reduce the every bit operation cost of operator, effectively solve the frequency limited problem that dense city and some hot spot regions occur, its major advantage is that throughput significantly improves.As, HSPAMX can be applied to the indoor and outdoor environment simultaneously, and for indoor environment, throughput can be brought up to original 2 times; For outdoor environment, throughput can be brought up to original 1.3-1.5 doubly.
Though the existing HSPAMX doubly space division multiplexing technology of speed is having effect preferably aspect the availability of frequency spectrum and the system data throughput, also have following problem:
This technology is based on sub-district, contained fan, time slot, code channel and carries out space division multiplexing, promptly, carry out resource allocation with the Radio Resource that sub-district+contained fan+time slot+code channel was identified as the least resource unit, thereby improve the availability of frequency spectrum and system data throughput, but, therefore be still waiting raising aspect single residence user content owing to the different user that can not distinguish with code channel.
Summary of the invention
The embodiment of the invention provides a kind of wireless resource multiplexing method and relevant device thereof, in order to improve single residence user content of space division multiplexing technology.
The wireless resource multiplexing method that the embodiment of the invention provides is applied to adopt the communication system of distributed base station, and described distributed base station comprises BBU and RRU, and described RRU supports one or more RRUB, and this method comprises:
BBU determines other users that can carry out resource multiplex with first user who meets multiplexing requirement;
First user is multiplexed into the employed Radio Resource of user that belongs to different RRUs or RRUB among described other users with first user.
The baseband processing unit equipment of the distributed base station that the embodiment of the invention provides comprises:
Determination module is used to determine other users that can carry out resource multiplex with first user who meets multiplexing requirement;
Multiplexing module is used for first user is multiplexed into the employed Radio Resource of user that described other users and first user belong to different RRUs or RRUB.
In the method and apparatus that the above embodiment of the present invention provided, determine to carry out with first user who meets multiplexing requirement the user of resource multiplex by BBU, and first user is multiplexed into the employed Radio Resource of user that belongs to different RRUs or RRUB among described other users with first user, thereby make the user who belongs to different RRUs or RRUB use identical Radio Resource.Because the wireless resource allocation unit is generally sub-district+contained fan+time slot+code channel, thereby can improve user capacity in the identical time slot in single sub-district by said method.
The radio network controller that the embodiment of the invention provides comprises:
Interface module is used to receive BBU equipment first user who meets multiplexing requirement who sends and the connection attribute information that can carry out other users of resource multiplex with it, wherein carries the sign that the user connects pairing RRU and RRUB; And, resource allocation result is sent to BBU equipment;
Resource distribution module is used for connecting according to the user sign of pairing RRN and RRUB, and the employed allocation of radio resources of user that will be among described other users belongs to different RRUs or RRUB with first user is given first user.
The allocation of radio resources system that the embodiment of the invention provides comprises: foregoing radio network controller, and baseband processing unit BBU equipment;
Described BBU equipment comprises:
Interface module, first user who is used for meeting multiplexing requirement sends to RNC with the connection attribute information that is defined as other users that can be multiplexing with it, wherein carries the user and connects pairing RRU sign and RRUB sign; And, receive RNC according to described RRU sign or RRUB be designated that first user distributes can be multiplexing with it and belong to employed wireless resource information of being connected of different RRUs or RRUB;
Described Multiplexing module is further used for, and is the resource that first user distributes according to RNC, and first user is multiplexed into the employed Radio Resource of relative users.
In the equipment and system that the above embodiment of the present invention provided, determine other users that can carry out resource multiplex with first user who meets multiplexing requirement by BBU, and report RNC, by RNC is that first user distributes can be multiplexing with it and belong to employed Radio Resource of being connected of different RRUs or RRUB, thereby realizes user's resource multiplex.On the one hand, because the wireless resource allocation unit is generally sub-district+contained fan+time slot+code channel, thereby can improve user capacity in the identical time slot in single sub-district by the said equipment and system; On the other hand, by jointly resource allocation being controlled, solved the professional problem that consequently can't realize similar business such as R4 that only causes RNC can not distinguish the different user under same time slot or the code channel in the prior art carrying out resource allocation on the base station level by BBU and RNC.
Description of drawings
Fig. 1 is for realizing the network architecture schematic diagram of the embodiment of the invention;
The wireless resource multiplexing schematic flow sheet that Fig. 2 provides for the embodiment of the invention;
The schematic flow sheet of the wireless resource multiplexing example that Fig. 3 provides for the embodiment of the invention;
BBU that Fig. 4 provides for the embodiment of the invention and structure and the connection diagram thereof of RNC.
Embodiment
At the problem that prior art exists, the embodiment of the invention provides a kind of wireless resource multiplexing method and the relevant network equipment thereof based on the multichannel networking technology of the distributed base station of TD system.Below in conjunction with accompanying drawing the embodiment of the invention is described in detail.
Referring to Fig. 1, be the multichannel networking schematic diagram of the distributed base station that the embodiment of the invention adopted.As shown in the figure, distributed base station is that the baseband portion of base station and radio frequency part are separated, and wherein, baseband portion is called BBU (baseband processing unit), and radio frequency part is called RRU (Remote Radio Unit).A plurality of RRU can be placed on Anywhere indoor neatly, thereby BBU concentrates placement that Base-Band Processing can be shared.BBU and RNC (Radio Network Controller, radio network controller) connect, and are connected with each RRU in being distributed in building by optical fiber, single RRU can support 1～8 RRU passage (RRU Brand, RRUB).
Based on the multichannel group-network construction of BBU+RRU shown in Figure 1, the wireless resource multiplexing flow process that the embodiment of the invention provided can be as shown in Figure 2.
Referring to Fig. 2, be the wireless resource multiplexing schematic flow sheet that the embodiment of the invention provided, this flow process comprises step:
In this step, during the RNC distributing radio resource, during connecting, the UE that will meet multiplexing requirement is connected the UE of the shared resource allocation of the connection that belongs to different RRUs or RRUB to resource to be allocated with the UE of resource to be allocated, time slot and corresponding code channel as the UE that will meet multiplexing requirement are distributed to the UE of resource to be allocated, thereby the connection multiplexing that will belong to different RRUs or RRUB is on identical time slot and code channel resource.Here alleged code channel resource refers to the spreading code (ovsf code) in the TD system, comprises 16 code channels in every time slot.
Further, the UE for carrying out wireless resource multiplexing also can comprise the steps:
Further, for the UE that is withdrawed from resource multiplex, also can comprise the steps:
Above-mentioned steps 206 can replace with: when BBU monitors the UE that carries out resource multiplex when no longer meeting multiplexing the requirement, the adjustment that will not meet the UE of multiplexing requirement by BBU is withdrawed from multiplexing, and the Resources list that upgrades is sent to RNC.
Above-mentioned steps 207 can replace with: when BBU monitors when being withdrawed from multiplexing UE and meeting multiplexing the requirement again, the UE that will meet multiplexing requirement by BBU adjusts and adds multiplexingly, and the Resources list that upgrades is sent to RNC.
By above-mentioned flow process, can at most the individual UE of N (N is the quantity of RRU/RRUB) be carried out resource multiplex.Further, when on being multiplexed into same code channel, error rate problem (threshold value that is higher than regulation as the error rate) simultaneously or almost simultaneously occurring corresponding to a plurality of UE of different RRUs or RRUB, then can promptly withdraw from the multiplexing of these UE with these UE fast dispatch for not multiplexing from multiplexing code channel; Also can taking steathily, the mode of frame scheduling solves error rate problem, as a certain road RRU+RRUB among shared RRU of the connection that can suspend these UE (being about to the Radio Resource that these UE are multiplexed into) or the RRUB to the emission of the data-signal of these UE, can also further send out switching command by another road RRU+RRUB, switch to require UE to carry out the sub-district, thereby in time one of them UE is transferred on the Radio Resource of other sub-districts, avoid the error rate to continue to increase.
In the embodiment of the invention, carry out signal strength measurement and analyze each UE in view of the above whether meet multiplexing requirement when sending UpPTS time slot signal and RACH signal, can obtain comparatively accurate analytical results at UE, this be because:
In the access mechanism at random of TD system, when UE prepares will launch UpPTS when registering or inserting at random in the air, UE sends uplink synchronous code (SYNC-UL) by the UpPTS time slot, with insert at random or handoff procedure in the initial synchronisation and the initial beam figuration that are used to set up between UE and the base station measure.But owing to reasons such as the protection time slot of the complexity of environment and UpPTS time slot are narrower, the UpPTS time slot signal that causes BBU to receive might be disturbed thereby inaccurate.After the SYNC_UL of UE transmission was detected by BBU, BBU responded indication information on the FPACH channel; Terminal receives that FPACH response back sends the RACH signal according to the indication of BBU on the PRACH channel, with beginning RRC establishment of connection.In addition, being assigned the link isolation that the user of Radio Resource connects during this period also may change.The above embodiment of the present invention, characteristic according to the access mechanism at random of TD system, when UE sends the UpPTS time slot signal and sends the RACH signal subsequently, measure the signal strength signal intensity of each UE and carry out the analysis of isolation, can guarantee new access or switch the UE that comes whether reusable accurately analyze and whether reusable is accurately analyzed to using professional UE.Certainly, newly inserting or switching the signal strength signal intensity of measuring each UE when the UE that comes sends UpPTS time slot signal or RACH signal, can determine to a certain extent also whether the connection of each UE meets multiplexing requirement.
In the embodiment of the invention, BBU when UE sends the UpPTS signal, carry out signal strength measurement and carry out in view of the above the isolation analysis tentatively determine can be multiplexing UE connect after, can be with the linkage flag of these UE " preparing multiplexing "; When BBU carries out signal strength measurement and carries out the isolation analysis once more when UE sends the RACH signal, can analyze these connections that are labeled as " preparing multiplexing " targetedly, thereby will think all in this twice signal strength signal intensity and isolation horizontal analysis process that the connection of the UE that satisfies multiplexing requirement is defined as reusable connection.
Method according to each isolation level that connects of signal strength analysis can adopt the prior art mode to realize.Can set in advance the isolation threshold value, when carrying out the isolation horizontal analysis,, show that then the connection of this UE meets multiplexing requirement, otherwise do not meet multiplexing requirement if the isolation that certain UE connects between each link of different RRUs and RRUB thereof surpasses this threshold value.The isolation threshold value can determine according to theory analysis and measured result, it has been generally acknowledged that when space isolation between link reaches 12～15dB to meet multiplexing requirement, certainly, in order to reach better empty branch effect, higher isolation threshold value can be set.
In the embodiment of the invention, RNC is when carrying out resource allocation, and the connection of carrying out multiplexing UE for needs distributes already used Radio Resource, can make full use of like this and use resource, improves the user capacity of every time slot.When the connection multiplexing that needs is carried out multiplexing UE is to already used Radio Resource, also can at first determine in the sub-district existing each connect respectively and to carry out isolation between multiplexing the connection with needs (isolation between the connection can utilize the isolation between each link of corresponding connection and obtain according to the isolation computing formula, the isolation between the link separately as existing two connections is respectively 20dB and 25dB, the isolation for the treatment of each link of connection of multiplexing UE is 16dB, | 16-20|＜| 16-25|, the connection of then treating multiplexing UE and isolation are that the isolation between being connected of 25dB is higher), and according to the isolation of determining, selecting to carry out the multiplexing shared Radio Resource of the high connection of isolation that is connected with needs according to isolation order from high to low from the existing connection that meets multiplexing requirement distributes, like this, thus can guarantee that the high connection of preferential multiplexing isolation reduces disturbs.RNC also can like this, can save the disposal ability of RNC at random for needing multiplexing connection to distribute the shared Radio Resource of existing connection to carry out resource multiplex.
At adopting EMLPP (Enhanced Multi-Level Precedence and Pre-emption Service, enhancement mode multipriority and preemption business) machine-processed situation, RNC can preferentially select to carry out with the lower shared Radio Resource of connection of allocation of radio resources priority in connecting multiplexing, can guarantee that like this connection and institute's loaded service thereof that allocation of radio resources priority is high are unaffected as far as possible.EMLPP mechanism is to increase EMLPP priority level parameter in user signing contract information, and in call handling process, be issued to MSC (Mobile Switching Center, mobile switching centre), send to RNC and after can being converted to allocation of radio resources priority by MSC.EMLPP can provide 7 grades of priority, and wherein two limit priorities belong to the internal system use, and can only use in the local MSC of native system, and all the other 5 grades lower priority allows the user to use in the world.
In like manner, at adopting QoS (Quality of Service, service quality) Ji Zhi situation, RNC can preferentially select to carry out with the lower shared Radio Resource of connection of QoS rank in connecting multiplexing, can guarantee that so the connection of high-level QoS and institute's loaded service thereof are unaffected as far as possible.
Under the situation of isolation sudden change, for example one road RRU channel signal suddenly disappears, and RRU channel signal emergent situation in another road can cause occurring suddenly disturbing or call drop usually.In order to address this problem, in the embodiment of the invention, in the zone that causes the isolation sudden change easily, can in antenna-feedback system, introduce the weak signal of adjacent R RU+RRUB in advance, the two paths of signals of service RRU and adjacent R RU is mixed, make two Signal Spacing degree between the adjacent RRU+RRUB be lower than the isolation threshold value, thereby when BBU found that Signal Spacing degree between these two adjacent RRU+RRUB is lower than the isolation threshold value, notice RNC connected and withdraws from multiplexing or directly connection is withdrawed from multiplexing by BBU belonging to these two adjacent RRU+RRUB respectively and being multiplexed into together user.
With a concrete scene embodiment of the invention is described in detail below.
As shown in Figure 3, in a single-carrier cell, when UE1 carries out business, communicate with BBU via RRU passage 1 (Path1) via RRU passage 0 (Path0) and by link 1 (L1) by link 0 (L0); RNC is with the code channel 0﹠amp of time slot 2 (up) at this moment; 1 and the code channel 0﹠amp of time slot 3 (descending); 1 distributes to UE1 uses.
When UE2 inserts, send the UpPTS signal to BBU via Path1 and by link 3 (L3) via Path0 by link 2 (L2).BBU is by measuring the uplink signal strength of each UE that receives from each RRU passage, and the isolation that the isolation that analyzes L0 and L1 is higher than isolation threshold value, L2 and L3 is higher than the isolation threshold value, and then the linkage flag with UE2 and UE1 is " preparing multiplexing ";
BBU responds indication information after receiving the UpPTS signal of UE2 on the FPACH channel, UE2 receives that FPACH response back sends the RACH signal according to indication on the PRACH channel; BBU is by measuring the uplink signal strength of each UE that receives from each RRU passage, analyze the isolation level of isolation level, L2 and the L3 of L0 and L1 once more, analysis result is being connected of UE1 and UE2 to meet multiplexing requirement, so BBU sends to RNC with the connection attribute information of UE1 and UE2 (being connected pairing RRU sign, RRUB sign comprising the user);
RNC is according to the connection attribute information that receives from BBU, judges to belong to being connected of UE1 and UE2 being connected of different RRU and RRUB and UE1 and UE2 to meet multiplexing requirement, the code channel 0﹠amp of the time slot 2 (up) that then UE1 has been used; 1 and the code channel 0﹠amp of time slot 3 (descending); 1 distributes to UE2, and notice BBU requires to carry out;
When BBU is dispatched to UE2, the resource of distributing according to RNC, with the connection multiplexing of UE2 on corresponding time slot and code channel, thereby realize multiple users share frequency, time slot and code channel.
By as can be seen to the foregoing description of present embodiment, the embodiment of the invention by space isolation is met multiplexing requirement and belong to different RRUs or the connection multiplexing of the UE of RRUB to same code channel, on the one hand, at present stage TD-SCDMA system usable frequency deficiency, form the problem of outdoor or indoor co-channel interference easily, realized that single-frequency is carried out in the enough zones of a plurality of space isolation to be covered, thereby can other regional co-channel interference probability of corresponding minimizing.On the other hand, also increased single residence user content, present stage TD-SCDMA system number of service subscribers of single carrier frequency while is become maximum N*8 by 8 of original maximums, wherein N represents complete multiplexing coefficient.
Have again, the embodiment of the invention is by sending to RNC with connection attribute, carry out resource allocation by RNC according to this connection attribute, make BBU and RNC all participate in the control of resource multiplex, and make RNC obtain the information such as attribute of the connection of each UE, and make RNC can distinguish same sub-district, same contained fan, same time slot, with the different user of code channel, thereby make the embodiment of the invention can be applicable to business such as R4 or HSPA.
In addition, the wireless resource multiplexing method that the embodiment of the invention provided is applicable to the resource multiplex of uplink and downlink, and can with existing resources distribution mechanism compatibility.
Another embodiment of the present invention also provides a kind of wireless resource allocation methods, this embodiment is with the difference of previous embodiment: BBU is determining not report RNC after being connected of reusable UE, and be the connection distributing radio resource of reusable UE by BBU, like this, can realize that also single-frequency is carried out in the enough zones of a plurality of space isolation to be covered, thereby can other regional co-channel interference probability of corresponding minimizing, and increase single residence user content.Among this embodiment, determine how whether UE meets multiplexing requirement and how in the processing operation for the UE distributing radio resource that meets multiplexing requirement, similar with the respective handling operation of previous embodiment, do not repeat them here.
Based on identical technical conceive, the embodiment of the invention also provides the BBU in a kind of distributed base station system equipment, and RNC equipment, is applicable to aforementioned processing procedure of carrying out resource multiplex by BBU and RNC jointly.The structure of this BBU equipment and RNC equipment and the schematic diagram of annexation thereof can be as shown in Figure 4.
As shown in Figure 4, the BBU equipment that the embodiment of the invention provides comprises: determination module 41, interface module 42 and Multiplexing module 43, wherein:
Multiplexing module 43 is used for according to the resource that RNC distributes first user being multiplexed into and is its assigned radio resource.
Determination module can further comprise following functional unit:
Signal strength measurement unit 1 is used to measure each user's who comprises first user that the link through different RRUs and RRUB thereof receives uplink signal strength;
Multiplexing determining unit 3 is used for as two users that comprise first user when isolation of link all meets multiplexing the requirement separately at least, the user except that first user wherein is defined as carrying out with first user user of resource multiplex.
Further, signal strength measurement unit 1 is when first user sends the UpPTS signal, the UpPTS signal strength signal intensity that measurement receives on the link of different RRUs and RRUB thereof, and the uplink signal strength of measuring other users that on the link of different RRUs and RRUB thereof, receive; And, when first user sends the RACH signal subsequently, measure the RACH signal strength signal intensity that on the link of different RRUs and RRUB thereof, receives, and measure the uplink signal strength that on the link of different RRUs and RRUB thereof, receives other users; The signal strength signal intensity that measures when isolation determining unit 2 sends the UpPTS signal according to first user and when sending the RACH signal is determined each user isolation between the link separately respectively; The isolation between the link is greater than the isolation threshold value separately at least two users that comprise first user that multiplexing determining unit 3 is determined when first user sends the UpPTS signal and during the RACH signal, and then wherein the user except that first user is defined as carrying out with first user user of resource multiplex.
Multiplexing module 43 also can be after being multiplexed into the employed Radio Resource of other users with first user, a progressive monitoring is multiplexed into the situation of change that user together connects, and when monitor connection is withdrawed from when not satisfying multiplexing the requirement multiplexing, and further after satisfying multiplexing requirement, add multiplexing again with withdrawing from multiplexing connection; This module also can be adjusted resource multiplex according to the error rate situation that is multiplexed into user together, perhaps sends the indication that RRU among shared RRU of the connection that suspends these users or the RRUB or RRUB launch these users' connection.Concrete processing procedure is similar to the processing mode that aforementioned flow process shown in Figure 2 is described, and does not repeat them here.
Above-mentioned BBU equipment also can comprise signal mixing module (not illustrating in the drawings), this module is used in the zone that causes the isolation sudden change easily, by in antenna-feedback system, introducing RRU adjacent and the weak signal of RRUB thereof in advance with current service RRU and RRUB thereof, the two paths of signals of current service RRU and the RRU that is adjacent is mixed, so that two adjacent RRU and the Signal Spacing degree between the RRUB thereof are lower than the isolation threshold value; Like this, when these two adjacent RRU and the Signal Spacing degree between the RRUB thereof are lower than the isolation threshold value, Multiplexing module 43 can with belong to these two adjacent RRU and RRUB thereof respectively and be multiplexed into together user connect withdraw from multiplexing.
As shown in Figure 4, the RNC equipment that the embodiment of the invention provides comprises: interface module 51 and resource distribution module 52, wherein:
The resource distribution mode of resource distribution module 52 can be similar with the resource distribution mode of the described RNC of aforementioned flow process shown in Figure 2, repeats no more once more.
In the structure of the BBU equipment that another embodiment of the present invention provided, comprising: determination module and Multiplexing module, this BBU be applicable to and aforementionedly carry out the processing procedure of resource multiplex by BBU, wherein:
Determination module is used to determine other users that can carry out resource multiplex with first user who meets multiplexing requirement, and the included functional unit of cover half piece 41 is identical really among its included functional unit and Fig. 4;
Multiplexing module is used for first user is multiplexed into the employed Radio Resource of user that these other users and first user belong to different RRUs or RRUB.
This BBU equipment is compared with BBU equipment shown in Figure 4, the function that reports RNC in the determination module 41 is removed promptly obtain in the present embodiment cover half piece really; And Multiplexing module has resource allocation function, and the resource distribution mode of the resource distribution module 52 of the RNC equipment among its resource distribution mode and Fig. 4 is similar, does not repeat them here.
Need to prove that BBU also can carry out the processing of wireless resource multiplexing according to case mechanism, as, predesignate the reporting events condition of UE, when BBU receives corresponding event that UE reports, message or signaling, can trigger corresponding wireless resource multiplexing processing procedure.For example, the isolation between each that is withdrawed from multiplexing UE connects reports corresponding event when improving, and the incident that BBU reports according to UE adds the connection of this UE multiplexing again.
Need to prove that also above embodiment is that example is described with the TD system only, but does not get rid of the communication system that the thought of the foregoing description can be applied to other standards.If be applied to the communication system of other standards, title or the type that need carry out the upward signal that the UE (UE that comes as the UE or the switching of new access) of resource allocation sent also should adapt with the communication system of current standard.
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, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (24)
1. wireless resource multiplexing method is applied to adopt the communication system of distributed base station, and described distributed base station comprises baseband processing unit BBU and radio frequency remote unit RRU, and described RRU supports one or more RRU passage RRUB, it is characterized in that, comprising:
BBU determines other users that can carry out resource multiplex with first user who meets multiplexing requirement;
First user is multiplexed into the employed Radio Resource of user that belongs to different RRUs or RRUB among described other users with first user.
2. the method for claim 1 is characterized in that, BBU also comprises after determining and can carrying out other users of resource multiplex with first user who meets multiplexing requirement:
BBU sends to radio network controller (RNC) with first user and described other users' connection attribute information, wherein carries the sign that the user connects pairing RRU and RRUB;
First user is multiplexed into the employed Radio Resource of user that belongs to different RRUs or RRUB among described other users with first user, comprises:
RNC will belong to the employed allocation of radio resources of user of different RRUs or RRUB to first user with first user among described other users according to the sign that the user connects pairing RRN and RRUB;
BBU is first user's assigned radio resource according to RNC, and first user is multiplexed into the employed Radio Resource of relative users.
3. method as claimed in claim 1 or 2 is characterized in that, BBU determines other users that can carry out resource multiplex with first user who meets multiplexing requirement, is specially:
BBU measures the uplink signal strength of each RRU and RRUB reception thereof, whether the connection of determining to comprise each user of first user according to the uplink signal strength that measures meets multiplexing requirement, and when at least two users' that comprise first user connection all meets multiplexing the requirement, the user except that first user wherein is defined as carrying out with first user user of resource multiplex.
4. method as claimed in claim 3 is characterized in that, BBU measures the uplink signal strength that each RRU and RRUB thereof receive, and determines to comprise whether each user's of first user connection meets multiplexing requirement according to the uplink signal strength that measures, and comprising:
When BBU sends uplink pilot time slot UpPTS signal first user, the UpPTS signal strength signal intensity that measurement receives on the link of each RRU and RRUB thereof, and the uplink signal strength of measuring other users that on the link of each RRU and RRUB thereof, receive, determine each user isolation between the link separately by the signal strength signal intensity that measures, and as at least two users that comprise first user when isolation between the link is greater than the isolation threshold value separately, the user who the connection of relative users tentatively is defined as meeting multiplexing requirement connects;
When at least two users' that comprise first user connection tentatively meets multiplexing the requirement, BBU measures the RACH signal strength signal intensity that receives on the link of each RRU and RRUB thereof when first user sends Random Access Channel RACH signal subsequently, and the uplink signal strength of measuring other users that tentatively meet multiplexing requirement that on the link of each RRU and RRUB thereof, receive, and as at least two users that comprise first user when isolation between the link is greater than the isolation threshold value set separately, the user who the connection of relative users finally is defined as meeting multiplexing requirement connects.
5. method as claimed in claim 1 or 2 is characterized in that, when other users that can carry out resource multiplex with first user when a plurality of, first user is multiplexed into the employed Radio Resource of described other users, comprising:
Determine respectively first user connection and can with the isolation between its multiplexing a plurality of users are connected, according to the isolation of determining, with first user's connection multiplexing to being connected employed Radio Resource with the highest user of its isolation;
Perhaps, with first user's connection multiplexing to random fashion from connecting employed Radio Resource with a user who selects its multiplexing a plurality of users are connected.
6. method as claimed in claim 1 or 2 is characterized in that, when other users that can carry out resource multiplex with first user when a plurality of, first user is multiplexed into the employed Radio Resource of described other users, comprising:
With first user's connection preferentially be multiplexed into can with the low employed Radio Resource of connection of allocation of radio resources priority during its multiplexing a plurality of users are connected;
Perhaps, first user's connection preferentially is multiplexed into can with the low employed Radio Resource of connection of service quality QoS rank during its multiplexing a plurality of users are connected.
7. method as claimed in claim 1 or 2 is characterized in that, first user is multiplexed into the employed Radio Resource of other users after, also comprise:
When first user when not meeting multiplexing the requirement with being connected of its other multiplexing users, withdraw from first user multiplexing.
8. method as claimed in claim 7 is characterized in that, with first user withdraw from multiplexing after, also comprise:
When first user with withdraw from when meeting multiplexing the requirement with being connected of its other multiplexing users before multiplexing, add first user multiplexing again.
9. method as claimed in claim 1 or 2, it is characterized in that, after first user is multiplexed into the employed Radio Resource of other users, on being multiplexed into described Radio Resource and the error rate that belongs to a plurality of users of different RRUs or RRUB when being higher than setting threshold, also comprise:
Withdraw from multiplexing from described Radio Resource described a plurality of users' connection;
Perhaps, suspend RRU among pairing a plurality of RRU of this Radio Resource and the RRUB thereof and RRUB thereof emission to described a plurality of users'data signals.
10. method as claimed in claim 1 or 2 is characterized in that, also comprises:
In the zone that causes the isolation sudden change easily, RRU that introducing in advance and current service RRU and RRUB thereof are adjacent in antenna-feedback system and the weak signal of RRUB thereof, the two paths of signals of current service RRU and the RRU that is adjacent is mixed, so that two adjacent RRU and the Signal Spacing degree between the RRUB thereof are lower than the isolation threshold value;
When BBU finds that described two adjacent RRU and the Signal Spacing degree between the RRUB thereof are lower than the isolation threshold value, withdraw from the user's connection that belongs to these two adjacent RRU and RRUB thereof respectively and be multiplexed into together multiplexing.
11. the method for claim 1 is characterized in that, first user is multiplexed on described other user's radio resource, is specially:
With first user's connection multiplexing on employed time slot of described other users' connection and code channel thereof.
12. method as claimed in claim 11 is characterized in that, described time slot is ascending time slot or descending time slot.
13. the baseband processing unit BBU equipment of a distributed base station is characterized in that, comprising:
Determination module is used to determine other users that can carry out resource multiplex with first user who meets multiplexing requirement;
Multiplexing module is used for first user is multiplexed into the employed Radio Resource of user that described other users and first user belong to different RRUs or RRUB.
14. equipment as claimed in claim 13 is characterized in that, also comprises:
Interface module is used for first user is sent to RNC with the connection attribute information that is defined as other users that can be multiplexing with it, wherein carries the sign that the user connects pairing RRU and RRUB; And, receive RNC according to described RRU sign or RRUB be designated that first user distributes can be multiplexing with it and belong to employed wireless resource information of being connected of different RRUs or RRUB;
Described Multiplexing module is further used for, and is the resource that first user distributes according to RNC, and first user is multiplexed into the employed Radio Resource of relative users.
15., it is characterized in that described determination module comprises as claim 12 or 13 described equipment:
Signal strength measurement unit is used to measure each user's who comprises first user that each RRU and RRUB thereof receive uplink signal strength;
The isolation determining unit is used for determining the isolation between the relative users link separately according to the uplink signal strength that measures;
Multiplexing determining unit is used for as two users that comprise first user when isolation of link all meets multiplexing the requirement separately at least, the user except that first user wherein is defined as carrying out with first user user of resource multiplex.
16. equipment as claimed in claim 15, it is characterized in that, described signal strength measurement unit is further used for, when first user sends the UpPTS signal, the UpPTS signal strength signal intensity that measurement receives on the link of each RRU and RRUB thereof, and the uplink signal strength of measuring other users that on the link of each RRU and RRUB thereof, receive; And, when first user sends the RACH signal subsequently, measure the RACH signal strength signal intensity that on the link of each RRU and RRUB thereof, receives, and measure the uplink signal strength that on the link of each RRU and RRUB thereof, receives other users;
Described isolation determining unit is further used for, and the signal strength signal intensity that measures when sending the UpPTS signal according to first user and when sending the RACH signal is determined each user isolation between the link separately respectively;
Described multiplexing determining unit is further used for, the isolation between the link is greater than the isolation threshold value separately at least two users that comprise first user that determine when first user sends the UpPTS signal and during the RACH signal, and then wherein the user except that first user is defined as carrying out with first user user of resource multiplex.
17. as claim 13 or 14 described equipment, it is characterized in that, after described Multiplexing module is multiplexed into the employed Radio Resource of other users with first user, also be used for, as first user and the time notice RNC that do not meet multiplexing the requirement with being connected of its other multiplexing users, and withdraw from first user multiplexing according to the multiplexing indication of withdrawing from that RNC sends.
18. equipment as claimed in claim 17, it is characterized in that, described Multiplexing module with first user withdraw from multiplexing after, also be used for, when first user with withdraw from notice RNC when meeting multiplexing the requirement with being connected of its other multiplexing users before multiplexing, and, add first user multiplexing again according to the multiplexing indication of adding that RNC sends.
19. as claim 13 or 14 described equipment, it is characterized in that, after described Multiplexing module is multiplexed into the employed Radio Resource of other users with first user, on being multiplexed into described Radio Resource and the error rate that belongs to a plurality of users of different RRUs or RRUB when being higher than setting threshold, also be used for, withdraw from multiplexing from described Radio Resource described a plurality of users' connection; Perhaps, send the indication that RRU suspending among pairing a plurality of RRU of this Radio Resource and the RRUB thereof and RRUB thereof launch described a plurality of users'data signals.
20. as claim 13 or 14 described equipment, it is characterized in that, also comprise:
Signal mixing module, be used in the zone that causes the isolation sudden change easily, RRU that introducing in advance and current service RRU and RRUB thereof are adjacent in antenna-feedback system and the weak signal of RRUB thereof, the two paths of signals of current service RRU and the RRU that is adjacent is mixed, so that two adjacent RRU and the Signal Spacing degree between the RRUB thereof are lower than the isolation threshold value;
Described Multiplexing module is further used for, and when finding that described two adjacent RRU and the Signal Spacing degree between the RRUB thereof are lower than the isolation threshold value, withdraws from the user's connection that belongs to these two adjacent RRU and RRUB thereof respectively and be multiplexed into together multiplexing.
21. a radio network controller is characterized in that, comprising:
Interface module is used to receive BBU equipment first user who meets multiplexing requirement who sends and the connection attribute information that can carry out other users of resource multiplex with it, wherein carries the sign that the user connects pairing RRU and RRUB; And, resource allocation result is sent to BBU equipment;
Resource distribution module is used for connecting according to the user sign of pairing RRN and RRUB, and the employed allocation of radio resources of user that will be among described other users belongs to different RRUs or RRUB with first user is given first user.
22. radio network controller as claimed in claim 21, it is characterized in that, when other users that can carry out resource multiplex with first user when a plurality of, described resource distribution module determine respectively first user connection and can with the isolation between its multiplexing a plurality of users are connected, according to the isolation of determining, will wherein give first user with the highest user's of the first user isolation degree the employed allocation of radio resources that is connected; Perhaps, at random from can with select a user the multiplexing a plurality of users of first user are connected and connect employed allocation of radio resources and give first user.
23. radio network controller as claimed in claim 21, it is characterized in that, when other users that can carry out resource multiplex with first user when a plurality of, the employed allocation of radio resources of connection that allocation of radio resources priority was low during described resource distribution module preferentially will a plurality of users connects is to first user; Perhaps, the low employed allocation of radio resources of connection of service quality QoS rank is given first user in preferentially will these a plurality of users connecting.
24. an allocation of radio resources system is characterized in that, comprises as the described distributed base station baseband processing unit of claim 14-19 equipment, and as the described radio network controller of claim 20-22.
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