CN103108331B - Based on communication system and the network-building method of the frameless network architecture - Google Patents
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Abstract
The present invention relates to wireless communication technology field, be specifically related to a kind of communication system based on the frameless network architecture and network-building method.A kind of communication system pole network-building method based on the frameless network architecture of the present invention, by new resource dimension and antenna element and calculation processing unit, customer-centric, build the services set of antenna element composition, and carry out the extensive cooperation management etc. between Radio Resource resource management, mobile management, business unloading management and dissimilar antenna element according to described services set; Present invention eliminates traditional cell setting and Region dividing pattern, thus centered by user terminal demand, make user grasp the dominant right of Resourse Distribute, so solve a large amount of dissimilar base station coexist and dense deployment time wireless network networking problems; Therefore, the present invention is that the development of mobile radio telecommunications technology provides strong technical support.
Description
Technical field
The present invention relates to wireless communication technology field, be specifically related to a kind of communication system based on the frameless network architecture and network-building method.
Background technology
Along with the development of mobile communication technology, growing to the capacity requirement of wireless network, expect the year two thousand twenty, the capacity requirement of wireless network will be 1000 times of current needs.But obtainable capacity gain and limited Radio Transmission Technology, the research focus that therefore capacity increases concentrates on and realizes further capacity gain by increasing more base station.New base station type constantly occurs, such as, on traditional macro base station (MacroCell) basis, occur comprising the multiple base station types such as micro-base station (MicroCell), femto base station (PicoCell), femto base station/Home eNodeB (FemtoCell/HomeeNB) and far end radio frequency head (RRH).And relay is also thought raising capacity by next generation mobile communication standardization body and improves the important means covered, therefore, relay station (RelayStation) will be deployed among wireless network in a large number; Meanwhile, WLAN (wireless local area network) (WLAN, WirelessLocalAreaNetworks) access point (AP, AccessPoint) and 60GHz launch point are also deployed in hot spot region and interior of building in a large number.Like this, polytype base station will be deployed in together jointly, and then forms network design new scene that is multi-level, isomery mixing.
At present, wireless networking mode traditional in mobile communication is the network-building method dividing overlay area based on Small Section Mode, by dividing overlay area and then the comprehensive covering of formation to some regions of each base station, by setting overlapping region to ensure the service quality of user in handover procedure between community and community.But along with the raising of dissimilar base station deployment closeness, the overlap forming multilayer in same region covers by dissimilar base station, multiple micro-base station cell covering and the covering of femto base station honeycomb etc. such as will be disposed in macro base station coverage area, under the technical support of collaboration communication, multiple base station can by cooperative communication technology jointly for user provides service, coverage is covered to described user terminal and will become more flexible, traditional community dividing mode cannot effectively divide described scene again, based on the RRM of conventional cell dividing mode, mobile management, the strategy such as load management and AF panel also cannot so intensive multi-level, effectively implement in isomery hybrid network.
In sum, under one does not need division of cells can solve current multilayer heterogeneous mixed networking situation, a large amount of dissimilar base station coexist and dense deployment time the new network framework communication system of wireless network networking problems and network-building method urgently provide.
Summary of the invention
(1) technical problem that will solve
The object of the present invention is to provide a kind of communication system based on the frameless network architecture and network-building method, for cancelling traditional cell setting and Region dividing pattern, thus centered by user terminal demand, make user grasp the dominant right of Resourse Distribute, so solve a large amount of dissimilar base station coexist and dense deployment time wireless network networking problems.
(2) technical scheme
Technical solution of the present invention is as follows:
Based on a communication system for the frameless network architecture, comprise some antenna elements, the calculation processing unit of each described antenna element ownership and user terminal;
Described user terminal, detect periphery wireless environment and according to own service demand choose some antenna elements composition services set and be committed in described services set antenna element ownership calculation processing unit;
Described antenna element, for receive described user terminal service request and mutual to its ownership calculation processing unit and provide the communication resource according to the result of described calculation processing unit;
Described calculation processing unit, according to the services set administration configuration communication resource that current available network situation and described user terminal are chosen.
Described services set comprises an antenna or comprises an antenna array or comprise multiple antenna array.
The control plane of described communication system and datum plane can adjust its service range according to the network environment of reality, reach and suppress interference and improving energy efficiency; Described communication system regulates the coverage of its control plane and user plane according to every data that control plane is collected thus realizes the mutual conversion between dissimilar calculation processing unit.
Present invention also offers a kind of network-building method according to the above-mentioned communication system based on the frameless network architecture:
Based on a network-building method for the frameless network architecture, comprise step:
S1. user terminal detects periphery wireless environment and chooses some antenna elements according to own service demand self adaptation and forms services set and the calculation processing unit being committed to the antenna element ownership in described services set;
S2. the services set adaptive management configuration communication resource chosen according to current available network situation and described user terminal of described calculation processing unit.
Described step S1 comprises:
S101. user terminal detects the channel conditions between the quantity of antenna element and each antenna element that its periphery exists and transmitted power, bandwidth, code word and space angle that each antenna element can provide;
S102. some candidate service collection are built according to testing result in step S101;
S103. according to described user terminal mobile status and business demand, from described candidate service concentrate choose preferred service collection and wherein antenna element send service request;
S104. in conjunction with current network conditions and described preferred service collection, the calculation processing unit of antenna element ownership judges whether the communication resource meets user terminal demand:
Then jump to step S2;
No, then reject the antenna element wherein refusing user terminal access, upgrade candidate service collection and jump to step S103.
In described step S2, the administration configuration communication resource comprises allocation of radio resources; Described allocation of radio resources comprises centralized radio resource allocation and distributed Radio Resource distributes.
Described centralized radio resource allocation comprises:
S211. all usable radio resources of answering of preferred service set pair described in calculation processing unit searching resource pond;
S212. judge whether each usable radio resources meets user terminal resource requirement thresholding:
No, then refuse user terminal access;
Be, then according to centralized resources allocation algorithm distributing radio resource.
Described distributed Radio Resource distributes and comprises:
S221. all usable radio resources that described in each calculation processing unit collaborative searching resource pool, preferred service set pair is answered;
S222. the usable radio resources of the calculation processing unit of each antenna element ownership all meets when user terminal requires according to distributed resource allocation algorithm assigns Radio Resource.
In described step S2, the administration configuration communication resource also comprises the cooperation between dissimilar calculation processing unit; Cooperation between described dissimilar calculation processing unit comprises:
Dissimilar calculation processing unit adopts multiplex mode to provide service, then complete the grouping to described user terminal information by Signalling exchange, each grouping label is ensured to the packet combining of sequence simultaneously; Send data to user terminal by antenna element, and carry out corresponding quality assurance end to end;
Dissimilar calculation processing unit adopts diversity mode to provide service, then complete described user terminal information by Signalling exchange synchronous, each antenna element sends data to user terminal jointly, and carries out corresponding quality assurance end to end.
In described step S2, the administration configuration communication resource also comprises the replacement of mobile subscriber terminal services set; Described mobile subscriber terminal services set substitutes and comprises:
S241. described user terminal detects periphery wireless environment in real time, and upgrades described candidate service collection according to testing result;
S242. in the service quality value of current service collection lower than then judging it during preset value whether higher than the service quality value of all candidate service collection:
Then can not substitute by Trigger services collection;
No, then concentrate from all candidate service and choose the highest services set replacement current service collection of service quality value.
In described step S2, the administration configuration communication resource also comprises business unloading management; Described business unloading management comprises:
S251. the loading condition of each calculation processing unit of Real-Time Monitoring line period of going forward side by side gathers;
S252. in conjunction with heavy duty calculation processing unit present position, the underload calculation processing unit to its periphery sends business unload request;
S253. whether the underload calculation processing unit of periphery refuses business unload request in conjunction with own net load judgment;
If S254. all underload calculation processing units all refuse described business unload request, then stop business unloading; Otherwise, from the calculation processing unit of the business of permission unload request, select a finishing service unloading.
(3) beneficial effect
A kind of communication system based on the frameless network architecture of the present invention and network-building method, by new resource dimension and antenna element and calculation processing unit, customer-centric, build the services set of antenna element composition, and carry out the extensive cooperation management etc. between Radio Resource resource management, mobile management, business unloading management and dissimilar antenna element according to described services set; Present invention eliminates traditional cell setting and Region dividing pattern, thus centered by user terminal demand, make user grasp the dominant right of Resourse Distribute, so solve a large amount of dissimilar base station coexist and dense deployment time wireless network networking problems; Therefore, the present invention is that the development of mobile radio telecommunications technology provides strong technical support.
Accompanying drawing explanation
Fig. 1 is a kind of communication system schematic diagram based on the frameless network architecture of the present invention;
Fig. 2 is of the present invention a kind of based on mobile management schematic diagram in the network-building method of the frameless network architecture.
Embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described further.Following examples only for illustration of the present invention, but are not used for limiting the scope of the invention.
Embodiment one
Along with the continuous appearance of the Novel base stations such as micro-base station, femto base station, femto base station, relay, far end radio frequency head, WLAN access point, 60GHz launch point, the deployment of base station is made to become more and more intensive, more intuitive theory, will also exist ubiquitous antenna element in network; Based on such background, a kind of communication system based on the frameless network architecture as shown in Figure 1, introduces the resource of two brand-new dimensions, is namely responsible for the antenna element of transmission-receiving function and the calculation processing unit of responsible Baseband algorithms process and computing function; Communication system of the present invention also comprises user terminal; Described user terminal, detect periphery wireless environment and according to own service demand choose some antenna elements composition services set and be committed in described services set antenna element ownership calculation processing unit; Be centered by described user terminal for the structure of the services set of specific user in frameless network, for described user terminal, antenna element will be the one dimension new type resource except frequency, time slot, code word, space angle etc.; Described user terminal body, according to the QoS requirement of self, residing wireless chaining status and mobile status, is chosen above-mentioned multi dimensional resource dynamically.
Described antenna element is the basic composition unit of the frameless network architecture, is also the basic composition unit of user's services set; Its for receive described user terminal service request and mutual to its ownership calculation processing unit and provide the communication resource according to described calculation processing unit result; Different antenna elements has different features, such as different bay numbers, different transmitting powers, different rf frequencies, different and change direction and different beamforming approach etc.; Therefore, reasonably distributing antenna element provides service to need brand-new resource management scheme for user, not only will suppress the interference between different antennae unit, more will ensure can mutually cooperate between the different antennae unit in same services set;
Described calculation processing unit is the core guarantee of whole network architecture Effec-tive Function, and the major function of calculation processing unit is base-band information process, the administration configuration communication resource; It can ensure can mutually to cooperate between the calculation processing unit that different antennae unit belongs to, to provide more powerful computing ability, interconnection between the calculation processing unit that can carry out different antennae unit ownership, also When building their networks the calculation processing unit that different antennae unit belongs to can be positioned in a machine room, form central controlled calculation processing unit.
In above-mentioned communication system, described user terminal has grasped the dominant right of Resourse Distribute, can according to the needs of self, under the prerequisite meeting own services quality requirement, as much as possiblely asks for resource to network side.But for network side, be not completely passive acceptance, calculation processing unit can according to the channel condition etc. of the disturbance regime in the loading condition of self, network and user terminal, select the resource request agreeing to or refuse user, but calculation processing unit is once be assigned with resource to user, need follow to full capacity for user provides the principle of service.
For communication system of the present invention, from user terminal angle, system is no longer made up of the border that community and community have one by one, but is made up of the various resources that different antenna elements and these antenna unit have.For user terminal, these resources respectively have feature, and the antenna element such as had and user distance are comparatively near, and wireless link condition is better, can meet the business demand of user terminal self high bandwidth.And some antenna element transmitting powers are larger, the high-quality business demand of user terminal can be met.
Meanwhile, these resources have priority, and such as, if user terminal is current it is desirable that service with a large bandwidth and at a high rate, so the antenna element that large bandwidth transmits of can providing of close together is the first-selection of user terminal; If user terminal is current be in voice service, or is in high-speed moving state, the antenna element of high-quality, low bandwidth so can be provided may to be the first-selection of user terminal in this situation.In sum, for the building process of antenna element services set, user terminal first according to the information of antenna element of collecting periphery, and according to self situation, builds the Candidate Set of antenna element.And from Candidate Set, the preferred collection that can meet subscriber terminal service demand is selected based on system current load condition and method for managing resource.This contains multiple resource request in preferably collecting, and wherein each resource request contains selected antenna element, bandwidth, time slot, code word, space angle etc.User terminal is according to the result preferably collected, and the calculation processing unit belonged to for the different antennae unit in preferably collecting sends request respectively.
If the resource obtained current cannot meet the QoS requirement of user terminal, on the basis that so user terminal will be selected in first time, weed out the resource that cannot obtain from preferably concentrating, and again select new preferred collection based on Candidate Set, and again send resource request.User terminal constantly will choose resource, until meet the service quality of self, or by this process of system closure.
The frameless network architecture of the present invention, on the system configuration basis that control plane is separated with user plane, realizes the self-adaptative adjustment of control plane and user plane further.For control plane, its Main Function is the operation of control and management all-network agreement.Control plane is supplied to calculation processing unit or user to the accurate understanding of equipment, link and interaction protocol in whole network environment by procotol, and makes the normal operation adjusted timely with maintaining network when network condition changes.The function such as the necessary various network information and forwarding inquiries before the control plane data processing provided in user plane forwards.The self-adaptative adjustment of control plane refers to its service range of adjustment that control plane can be suitable according to the network environment of reality, to reach the object suppressing interference and improving energy efficiency.
For user plane, its Main Function is process and forwards user data.But user plane needs the Radio Resource taking the overwhelming majority in various plane task, also the direct performance to indexs such as service quality value plays a decisive role.Thus, efficient user plane Adaptive adjusting algorithm can not only improve radio resource efficiency, and can bring the significantly lifting of the performance index such as service quality value.The self-adaptative adjustment of user plane refers to that every data that user plane is collected according to control plane suitably regulate its coverage, plays hoist capacity, suppression interference, load balancing, business unloading and improves the objects such as wireless resource utility efficiency.
In sum, for the self-adaptative adjustment of control plane and user plane, it mainly changes is that control plane by originally same coverage is separated with user plane, makes system can according to real-time network environment, wireless link condition and the user's request adjustment control plane of self and the coverage of datum plane.And then the conversion between the calculation processing unit can supporting macrocellular, microcellulor and Pico cell, such as by adjusting the transmitting power of control plane and user plane channel thus the calculation processing unit of macrocellular being turned down the calculation processing unit that transmitting power becomes Pico cell, or the calculation processing unit of Pico cell increases the calculation processing unit that transmitting power becomes macrocellular.
Such as, at macrocellular, microcellulor, Pico cell, femtocell, relay, far end radio frequency head, WLAN, under the heterogeneous network environment that the networks such as 60GHz launch point cover jointly, macrocellular calculation processing unit can have the dominant right of bulk portion control plane, and most of datum plane is by microcellulor, Pico cell, femtocell, relay, far end radio frequency head, WLAN, the antenna element of 60GHz launch point is born, thus high bandwidth can be provided for user, high-quality service, can realize again suppressing interference, reduce the objects such as power consumption.
Embodiment two
Present invention also offers a kind of network-building method according to the above-mentioned communication system based on the frameless network architecture:
Based on a network-building method for the frameless network architecture, mainly comprise the following steps:
S1. user terminal detects periphery wireless environment and chooses some antenna elements according to own service demand self adaptation and forms services set and the calculation processing unit being committed to the antenna element ownership in described services set;
Described step S1 comprises:
S101. user terminal detects the wireless environment of its periphery, the resources such as transmitted power, bandwidth, code word and space angle that such as, channel conditions between the quantity of the antenna element existed and each antenna element and each antenna element can provide individually or in the mode of cooperation;
S102. according to testing result in step S101, prioritization is carried out to the antenna element around user terminal, and build some candidate service collection;
S103. according to described user terminal mobile status and business demand, concentrate from described candidate service and choose preferred service collection; User concentrates antenna element to send service request to preferred service, and the calculation processing unit belonged to by antenna element processes;
S104. the calculation processing unit of antenna element ownership is in conjunction with current network conditions and the change of disturbed condition in network after adding user terminal, selects to adjudicate, and provide the instruction whether allowing user terminal to access to preferred pooling of resources.When user terminal add membership cause network congestion time, calculation processing unit can refuse adding of user terminal, or when offered load is overweight, the access request of user terminal also can be rejected, or when Internet resources can not meet the demand for services of user terminal, the request of user terminal can be rejected equally.In conjunction with current network load situation and described preferred service collection, the calculation processing unit of antenna element ownership judges whether the communication resource meets the demand of user terminal:
If calculation processing unit all can meet the demand for services of user belonging to the antenna element that the feedback display that user terminal receives preferably is concentrated, the process choosing services set stops, and namely preferably collection is the services set of user terminal.
Otherwise, if the calculation processing unit that there is refusal user access is preferably concentrated in the feedback display that user terminal receives, user terminal from the antenna element preferably concentrated the calculation processing unit of rejecting refusal user access, and re-start preferred collection choose process, namely jump to step S103.
S2. in fact, the process of the services set adaptive management configuration communication resource chosen according to current available network situation and described user terminal is also experienced by the user terminal calculation processing unit carried out while services set chooses this flow process belonging to each antenna element.
In described step S2, the administration configuration communication resource comprises allocation of radio resources; Under frameless network-building method, multi-level, the network environment of isomery mixing and the introducing of bidimensional new resources make traditional radio resource management policy here and inapplicable.Therefore, brand-new radio resource management policy need be considered, other strategies under itself and described network-building method be cooperatively interacted, the service of customer-centric is provided;
For described radio resource management policy, centralized management method can be adopted, also can adopt distribution management method.
When adopting centralized management method, the method for resource pool can be adopted, the resource pool of constructing system, and realize the work such as scheduling, distribution, load balancing, mobile management of various dimensions resource in network based on resource pool.Centralized resource management method based on resource pool can adopt heuritic approach to reduce computation complexity, improves computational efficiency, such as ant colony optimization algorithm, genetic algorithm, particle cluster algorithm, neural net etc.; Such as:
S211. all usable radio resources of answering of preferred service set pair described in calculation processing unit searching resource pond;
S212. all available resources and user terminal resource requirement compare by network side,
Judge whether each usable radio resources meets user terminal resource requirement thresholding:
No, then refuse user terminal access and network side feeds back to by subordinate's calculation processing unit the message that user terminal accesses absolutely.
Be, then according to above-mentioned centralized resources allocation algorithm distributing radio resource.
When adopting distributed radio resource management strategy, needing different calculation processing unit to carry out the mutual cooperation mutually of information with the object reaching overall network Resourse Distribute optimum, promoting the efficiency of Resourse Distribute.In addition, efficient distributed resource allocation algorithm also can reduce the complexity of distributed radio resource management strategy, as based on game theoretic method for managing resource etc.; Such as:
S221. all usable radio resources that described in each calculation processing unit collaborative searching resource pool, preferred service set pair is answered;
S222. when Search Results show each antenna element belong to calculation processing unit available resources all can meet the demand for services of user time, feed back to the information that user allows to access, and reached the object of overall system performance optimum by the distributed resource allocation algorithm of above-mentioned optimization.Otherwise, feed back to the information that user refuses to access.
In described step S2, the administration configuration communication resource also comprises the cooperation between dissimilar calculation processing unit; Based on the frameless network architecture, various types of antenna element and corresponding access technology are all can for the resource of user.Various types of antenna element support extensively cooperates, thus forms dissimilar overlay area for user and provide service.The frameless network architecture has merged the concept of heterogeneous network, there is dissimilar antenna element in system, and the difference between these antenna unit is embodied in a lot of aspect.First, in wireless access technology of the same race, transmitting power difference, the coverage backhaul mode that is different, link being mainly reflected in different antennae unit is different, such as, in LTE network, be connected by IP network between Femtocell with core net, connected by wireless link between Relay and eNB.Secondly, between different radio access technologies, its difference is mainly reflected in the incompatible of signaling, such as WLAN and LTE network, LTE network and 3G, 2G network etc.After user terminal completes the process of the choosing of services set, allocation of radio resources, calculation processing unit connects and obtains service.But, because user terminal is in the process choosing services set, do not relate to the calculation processing unit type belonging to antenna element chosen, that is the antenna element in the services set chosen likely belongs to dissimilar calculation processing unit, such as WLAN access point and LTEMacro calculation processing unit.This cooperates mutually with regard to needing dissimilar calculation processing unit, and its cooperating process is specific as follows:
S301. when the antenna element under the antenna element under WLAN access point and LTEMacro calculation processing unit is in the services set of same user, jointly for user service is provided time, both multiplexing mode can have been adopted to provide service, the mode of diversity also can be adopted to provide service.When adopting multiplexing mode, jumping to step S232, when adopting the mode of diversity, jumping to step S234.
S232.LTEMacro calculation processing unit and WLAN access point complete grouping user terminal being sent to information by Signalling exchange, simultaneously to each grouping label, to ensure to carry out orderly packet combining at user side.
S233. after completing grouping label, network sends data to user by antenna element, and carries out corresponding quality assurance end to end, and such as sliding window controls, HARQ(HybridAutomaticRepeatRequest) hybrid automatic repeat-request etc.
It is synchronous that S234.LTEMacro calculation processing unit and WLAN access point calculation processing unit complete user terminal by Signalling exchange, to ensure that the data that affiliated different antennae unit sends arrive user simultaneously.
S235. complete synchronously, described antenna element sends data to user jointly, and carries out corresponding quality assurance end to end, and such as sliding window controls, HARQ etc.
In described step S2, the administration configuration communication resource also comprises the services set replacement of mobile subscriber terminal; Based on the frameless network architecture, user terminal, according to its actual demand and the accessible antenna element that can find, is selected suitable antenna element and combination of resources to access, has not been had traditional cellular concept.Therefore from the angle of user terminal, switch and will become the replacement of selected antenna element services set, conventional handoff concept also will disappear.Along with the movement of user terminal, the wireless chaining status of user terminal is also constantly changing, therefore, in services set, the signal quality of some antenna element may become the communication requirement no longer meeting user terminal, and then cannot meet the QoS requirement of user terminal.In addition, also the process that other condition activated user terminal carries out services set replacement is had, such as, when other resource performances available on certain antenna element are poor, this may be have other users to use same asset to cause larger interference to cause around, now can reject and minimum antenna element is contributed to its throughput, and attempt other antenna element of access.Meanwhile, when carrying out services set and substituting, also can merge a lot of prior art, such as, incorporate soft merging, cooperation transmission technology, make the process of replacement more level and smooth, ensure the performance of user terminal in moving process.
As shown in Figure 2, user provides service by the antenna element under the antenna element of the antenna element under the macrocellular network LTEMacro1 at its place and the femtocell network LTEFemto near it and WLAN1, WLAN2 for it at initial time t1.Along with the movement of user terminal, the signal quality of each antenna element in its services set is deteriorated gradually, thus the services set of activated user terminal substitutes process.In the t2 moment, user terminal deletes the antenna element of LTEFemto, WLAN1 and WLAN2 in services set, and introduces the antenna element of the good LTERelay of wireless link condition near it.But, along with the further movement of user terminal, in the t3 moment, user terminal moves to the intersection that three macrocellular network antenna elements cover, now, user terminal needs by the antenna element of LTEMacro1, LTEMacro2 and GSMMacro jointly for it provides service.Replacement process and the process in above-mentioned 3 moment of the services set of t4 moment and t5 moment user terminal are similar, all perform deletion and the gravity treatment of the antenna element in services set; Wherein, to carry out the process of the replacement of services set as follows for each user terminal:
S241. the wireless signal around the collection that user terminal is real-time when mobile, the radio channel state of monitoring ambient antenna unit, and the candidate service collection of self is constantly upgraded according to monitoring result, and each antenna element that candidate service is concentrated is sorted, the antenna element simultaneously concentrated with current service contrasts, and the radio channel state of antenna element that current service is concentrated by the moment compares with the threshold value preset, when monitor value lower than threshold value and candidate service concentrate there is radio channel state better antenna element time, the process that user's Trigger services collection substitutes.
S242. user performs the process (process with reference to above-mentioned user's services set builds) choosing services set.
In described step S2, the administration configuration communication resource also comprises business unloading management; Business unloads, and referred to as Offloading, is one and data traffic heavy in network is unloaded to the technology of other networks.Offloading operation can be arranged by network, also can be triggered by user terminal.The condition triggering this operation can be stored in subscriber terminal equipment, also can be stored in the webserver, even can be divided into two parts, exist respectively in subscriber terminal equipment and the webserver.For user terminal, need higher accessing cost for data when the application of opening and when monitoring wider available bandwidth from network environment, Offloading operation can be triggered.For network, when offered load is overweight cause network congestion time, Offloading operation can be triggered.Perfect complementary network technology can be formed to macrocellular network and comprise WLAN, femtocell and 60GHz access point etc.Core concept based on the Offloading strategy of the frameless network architecture is capacity equalization, load in heavy duty network is transferred to neighbouring underloaded network by the mode namely unloaded by business, or business is unloaded in underload antenna element overlay area by heavy duty antenna element overlay area, thus realizes suppressing interference, improving the objects such as network congestion, hoist capacity, raising resource utilization.Initiate for process for user, it is initiatively periodically measured the wireless environment of surrounding, such as supports the mobile terminal of WLAN function, periodically can search for wlan network around.After known or open wlan network is found when one, trigger Offloading process.For network initiating procedures, rm-cell in network is when in network, between each antenna element, traffic load differs greatly, Offloading implementation can be initiated, there is the situation of one or more underload antenna element in such as heavy duty its vicinity, or through prediction, rm-cell finds that some antenna element overlay area will occur congested, in these situations, Offloading process is triggered in capital, business is rationally unloaded in other antenna elements.Such as:
S251. each calculation processing unit of network side Real-Time Monitoring subordinate, and the loading condition of each calculation processing unit line period of going forward side by side is gathered;
S252. when network side triggers Offlaoding process, in conjunction with heavy duty calculation processing unit present position, the underload calculation processing unit to its periphery sends business unload request;
S253. when underloaded calculation processing unit receives the load unload request that network side sends, underloaded calculation processing unit is according to the situation of self, such as after load enters, whether can cause serious interference to current service-user, or whether there is enough resources and be supplied to the load being about to enter and decide to allow or refusal load unload request;
If S254. all underload calculation processing units all refuse described business unload request, then stop business unloading; Otherwise, from the calculation processing unit of the business of permission unload request, select a finishing service unloading.
Further, for the object such as disturbing in efficiency and Suppression network, control plane of the present invention can control less calculation processing unit as far as possible and manage wider control plane, meanwhile controls more multi-antenna-unit management datum plane more among a small circle.For in above-mentioned scene, macrocellular calculation processing unit can manage the control plane in whole coverage, and its datum plane can reduce as much as possible, can ensure that the low bandwidth speech business of a small amount of user covers like this, it can be avoided again to cause severe jamming to the antenna element of Pico cell antenna element, microcellulor antenna element, femtocell antenna element, relay antenna element, far end radio frequency head (RRH) and WLAN access point.For the calculation processing unit of microcellulor, Pico cell, femtocell, relay, far end radio frequency head and WLAN access point, its control plane can be little as much as possible, even its control plane can rely on the control plane of macrocellular calculation processing unit completely, can realize like this and the cooperating of macrocellular calculation processing unit, can power consumption be reduced again.And those are required to the user of large bandwidth, high quality-of-service value demand, can by the antenna element of the microcellulor near it, Pico cell, femtocell, relay, far end radio frequency head and WLAN access point for it provides the service of high-throughput.When occurring a user not under any datum plane covers in control plane display network, the covering that the antenna element of macrocellular needs the antenna element of its datum plane of suitable expansion or the Position Control residing for user microcellulor, Pico cell, femtocell, relay, far end radio frequency head and WLAN access point near it to expand its datum plane thinks that user provides service.
Above execution mode is only for illustration of the present invention; and be not limitation of the present invention; the those of ordinary skill of relevant technical field; without departing from the spirit and scope of the present invention; can also make a variety of changes and modification, therefore all equivalent technical schemes also belong to protection category of the present invention.
Claims (10)
1. based on a communication system for the frameless network architecture, it is characterized in that, comprise control plane, user plane, some antenna elements, the calculation processing unit of each described antenna element ownership and user terminal;
The operation of described control plane control and management all-network agreement;
Described user plane handles and forwarding user data;
Described control plane and described user plane adjust its service range according to the network environment of reality, suppress interference and improving energy efficiency;
The mutual conversion that every data that described communication system can be collected according to control plane regulate the coverage of its control plane and datum plane to realize between dissimilar calculation processing unit;
Described user terminal, detect periphery wireless environment and according to own service demand choose some antenna elements composition services set and be committed in described services set antenna element ownership calculation processing unit;
Described antenna element, for receive described user terminal service request and mutual to its ownership calculation processing unit and provide the communication resource according to the result of described calculation processing unit;
Described calculation processing unit, according to the services set administration configuration communication resource that current available network situation and described user terminal are chosen.
2. a kind of communication system according to claim 1, is characterized in that, described services set comprises an antenna or comprises an antenna array or comprise multiple antenna array.
3., according to the network-building method based on the communication system of the frameless network architecture described in claim 1-2 any one, it is characterized in that, comprise step:
S1. user terminal detects periphery wireless environment and chooses some antenna elements according to own service demand self adaptation and forms services set and the calculation processing unit being committed to the antenna element ownership in described services set;
S2. the services set adaptive management configuration communication resource chosen according to current available network situation and described user terminal of described calculation processing unit.
4. a network-building method according to claim 3, is characterized in that, described step S1 comprises:
S101. user terminal detects the channel conditions between the quantity of antenna element and each antenna element that its periphery exists and transmitted power, bandwidth, code word and space angle that each antenna element can provide;
S102. some candidate service collection are built according to testing result in step S101;
S103. according to described user terminal mobile status and business demand, from described candidate service concentrate choose preferred service collection and wherein antenna element send service request;
S104. in conjunction with current network conditions and described preferred service collection, the calculation processing unit of antenna element ownership judges whether the communication resource meets user terminal demand:
Then jump to step S2;
No, then reject the antenna element wherein refusing user terminal access, upgrade candidate service collection and jump to step S103.
5. a network-building method according to claim 4, is characterized in that, in described step S2, the administration configuration communication resource comprises allocation of radio resources; Described allocation of radio resources comprises centralized radio resource allocation and distributed Radio Resource distributes.
6. a network-building method according to claim 5, is characterized in that, described centralized radio resource allocation comprises:
S211. all usable radio resources of answering of preferred service set pair described in calculation processing unit searching resource pond;
S212. judge whether each usable radio resources meets user terminal resource requirement thresholding:
No, then refuse user terminal access;
Be, then according to centralized resources allocation algorithm distributing radio resource.
7. a network-building method according to claim 6, is characterized in that, described distributed Radio Resource distributes and comprises:
S221. all usable radio resources that described in each calculation processing unit collaborative searching resource pool, preferred service set pair is answered;
S222. the usable radio resources of the calculation processing unit of each antenna element ownership all meets when user terminal requires according to distributed resource allocation algorithm assigns Radio Resource.
8. a network-building method according to claim 7, is characterized in that, in described step S2, the administration configuration communication resource also comprises the cooperation between dissimilar calculation processing unit; Cooperation between described dissimilar calculation processing unit comprises:
Dissimilar calculation processing unit adopts multiplex mode to provide service, then complete the grouping to described user terminal information by Signalling exchange, each grouping label is ensured to the packet combining of sequence simultaneously; Send data to user terminal by antenna element, and carry out corresponding quality assurance end to end;
Dissimilar calculation processing unit adopts diversity mode to provide service, then complete described user terminal information by Signalling exchange synchronous, each antenna element sends data to user terminal jointly, and carries out corresponding quality assurance end to end.
9. a network-building method according to claim 8, is characterized in that, in described step S2, the administration configuration communication resource also comprises the replacement of mobile subscriber terminal services set; Described mobile subscriber terminal services set substitutes and comprises:
S241. described user terminal detects periphery wireless environment in real time, and upgrades described candidate service collection according to testing result;
S242. in the service quality value of current service collection lower than then judging it during preset value whether higher than the service quality value of all candidate service collection:
Then can not substitute by Trigger services collection;
No, then concentrate from all candidate service and choose the highest services set replacement current service collection of service quality value.
10. a network-building method according to claim 9, is characterized in that, in described step S2, the administration configuration communication resource also comprises business unloading management; Described business unloading management comprises:
S251. the loading condition of each calculation processing unit of Real-Time Monitoring line period of going forward side by side gathers;
S252. in conjunction with heavy duty calculation processing unit present position, the underload calculation processing unit to its periphery sends business unload request;
S253. whether the underload calculation processing unit of periphery refuses business unload request in conjunction with own net load judgment;
If S254. all underload calculation processing units all refuse described business unload request, then stop business unloading; Otherwise, from the calculation processing unit of the business of permission unload request, select a finishing service unloading.
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| CN103874078B (en) * | 2014-02-14 | 2017-05-31 | 北京邮电大学 | A kind of mobile communication access network framework |
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| CN104540144B (en) * | 2014-12-24 | 2018-06-26 | 西安交通大学 | A kind of network architecture of the customer-centric based on software definition |
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