CN103108331A - Communication system based on frameless network architecture and networking method - Google Patents
Communication system based on frameless network architecture and networking method Download PDFInfo
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Abstract
The invention relates to the technical field of wireless communication, in particular to a communication system based on a frameless network architecture and a networking method. According to the communication system based on the frameless network architecture and the networking method, a user-centered service set formed by antenna elements is constructed through new resource dimensionalities, namely the antenna elements and calculating and processing elements, and wireless resource management, mobile management, service unloading management, extensive coordination management between the antenna elements of different types and the like are carried out according to the service set. A traditional community setting and regional dividing mode is eliminated by the communication system based on the frameless network architecture and the networking method, then requirements of user terminals are taken as the center, and users have a dominant right of resource allocation. The wireless network networking problem when a large number of base stations of different kinds coexist and are intensively allocated is solved. Therefore, powerful technical support to the development of mobile wireless communication technique is supplied by the communication system based on the frameless network architecture and the networking method.
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.Yet, obtainable capacity gain and limited on the Radio Transmission Technology, so the research focus of capacity increase concentrates on by increasing more base station and realizes further capacity gain.New base station type constantly occurs, for example, on traditional macro base station (Macro Cell) basis, the multiple base station types such as little base station (Micro Cell), femto base station (Pico Cell), femto base station/Home eNodeB (Femto Cell/Home eNB) and far end radio frequency head (RRH) have appearred comprising.And relay also thought the raising capacity and improves the important means that covers by next generation mobile communication standardization body, and therefore, relay station (Relay Station) will be deployed among wireless network in a large number; Simultaneously, WLAN (wireless local area network) (WLAN, Wireless LocalAreaNetworks) access point (AP, Access Point) and 60GHz launch point also are 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 form network design new scene multi-level, that isomery mixes.
At present, in mobile communication, traditional wireless networking mode is based on the network-building method that residential quarter system is divided the overlay area, overlay area by dividing each base station and then form comprehensive covering to some zones, between residential quarter and residential quarter by setting overlapping region to ensure the service quality of user in handover procedure.but the raising along with dissimilar base station deployment closeness, dissimilar base station will form the overlapping covering of multilayer in same zone, such as will dispose a plurality of little base station cell coverings and the covering of femto base station honeycomb etc. in macro base station coverage area, under the technical support of collaboration communication, a plurality of base stations can provide service for the user jointly by cooperative communication technology, described user terminal is covered the coverage will become more flexible, traditional residential quarter dividing mode can't effectively be divided described scene again, RRM based on the conventional cell dividing mode, mobile management, load management and the strategy such as disturb to suppress also can't be so intensive multi-level, effectively implement in the isomery hybrid network.
In sum, a kind of division of cells that do not need can solve in present multilayer heterogeneous mixed networking situation, and a large amount of dissimilar base stations coexist and new network framework communication system and the network-building method of the wireless network networking problem during intensive dispose are demanded urgently providing.
Summary of the invention
The technical problem that (one) 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, be used for cancelling traditional cell setting and regional partition mode, thereby centered by the user terminal demand, make the user grasp the dominant right that resource is distributed, and then solve that a large amount of dissimilar base stations coexist and the wireless network networking problem during intensive the deployment.
(2) technical scheme
Technical solution of the present invention is as follows:
A kind of communication system based on the frameless network architecture comprises calculation processing unit and user terminal that some antenna elements, each described antenna element belong to;
Described user terminal detects peripheral wireless environment and chooses according to the own service demand calculation processing unit that some antenna elements form services set and are committed to the antenna element ownership in described services set;
Described antenna element is used for receiving the service request of described user terminal and provides the communication resource to the calculation processing unit of its ownership and according to the result of described calculation processing unit alternately;
Described calculation processing unit, the services set administration configuration communication resource of choosing according to current available network situation and described user terminal.
Described services set comprises an antenna or comprises an antenna array or comprise a plurality of antenna arrays.
The control plane of described communication system and datum plane can be adjusted its service range according to the network environment of reality, reach and suppress to disturb and improving energy efficiency; Thereby every data that described communication system is collected according to control plane are regulated the coverage of its control plane and user plane and are realized mutual conversion between dissimilar calculation processing unit.
The present invention also provides a kind of network-building method according to above-mentioned communication system based on the frameless network architecture:
A kind of network-building method based on the frameless network architecture comprises step:
S1. user terminal detects peripheral wireless environment and chooses according to own service demand self adaptation the calculation processing unit that some antenna elements form services set and are 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 detect the antenna element that its periphery exists quantity, and each antenna element between channel conditions and each antenna element transmitted power, bandwidth, code word and the space angle that can provide;
S102. build some candidate service collection according to testing result in step S101;
S103. according to described user terminal mobile status and business demand, from described candidate service concentrate choose the preferred service collection and wherein antenna element send service request;
S104. the calculation processing unit of antenna element ownership judges in conjunction with current network conditions and described preferred service collection whether the communication resource satisfies the user terminal demand:
To jump to step S2;
No, reject the wherein antenna element of refusing user's terminal access, upgrade the 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 the distribution of distributed wireless resource.
Described centralized radio resource allocation comprises:
S211. all usable radio resources that described in calculation processing unit searching resource pond, the preferred service set pair is answered;
S212. judge whether each usable radio resources satisfies user terminal resource requirement thresholding:
No, refusing user's terminal access;
Be, according to centralized resources allocation algorithm distributing radio resource.
Described distributed wireless resource is distributed and is comprised:
S221. all usable radio resources that described in each calculation processing unit collaborative searching resource pool, the preferred service set pair is answered;
When S222. the usable radio resources of the calculation processing unit of each antenna element ownership all satisfies user terminal and 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 that service is provided, and completes grouping to described user terminal information by Signalling exchange, simultaneously each grouping label is ensured the packet combining of order; Send data to user terminal by antenna element, and carry out quality assurance end to end accordingly;
Dissimilar calculation processing unit adopts diversity mode that service is provided, and completes synchronous to described user terminal information by Signalling exchange, and each antenna element sends data to user terminal jointly, and carries out quality assurance end to end accordingly.
In described step S2, the administration configuration communication resource comprises that also the mobile subscriber terminal services set substitutes; Described mobile subscriber terminal services set substitutes and comprises:
S241. described user terminal detects peripheral wireless environment in real time, and upgrades described candidate service collection according to testing result;
S242. judge in the service quality value of current service collection that it is whether higher than the service quality value of all candidate service collection during lower than preset value:
Can not trigger services set and substitute;
No, 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 the Real-Time Monitoring line period of going forward side by side gathers;
S252. in conjunction with heavy duty calculation processing unit present position, send the business unload request to its peripheral underload calculation processing unit;
S253. the underload calculation processing unit of periphery judges whether to refuse the business unload request in conjunction with self offered load;
If S254. all underload calculation processing units are all refused described business unload request, the unloading of termination business; Otherwise, select a finishing service unloading from the calculation processing unit that allows the business unload request.
(3) beneficial effect
A kind of communication system and network-building method based on the frameless network architecture of the present invention, be antenna element and calculation processing unit by new resource dimension, customer-centric, build the services set that antenna element forms, and carry out extensive cooperation management etc. between Radio Resource resource management, mobile management, business unloading management and dissimilar antenna element according to described services set; The present invention has cancelled traditional cell setting and regional partition mode, thereby centered by the user terminal demand, makes the user grasp the dominant right that resource is distributed, and then has solved that a large amount of dissimilar base stations coexist and the wireless network networking problem during intensive the deployment; Therefore, the present invention provides strong technical support for the development of mobile radio telecommunications technology.
Description of drawings
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 are used for explanation the present invention, but are not used for limiting the scope of the invention.
Embodiment one
Continuous appearance along with Novel base stations such as little base station, femto base station, femto base station, relay, far end radio frequency head, WLAN access point, 60GHz launch points, make the deployment of base station become more and more intensive, say more intuitively, will exist ubiquitous antenna element in network; Based on such background, a kind of communication system based on the frameless network architecture has as shown in Figure 1 been introduced the resource of two brand-new dimensions, namely is responsible for the antenna element of transmission-receiving function and the calculation processing unit of responsible base band algorithm process and computing function; Communication system of the present invention also comprises user terminal; Described user terminal detects peripheral wireless environment and chooses according to the own service demand calculation processing unit that some antenna elements form services set and are committed to the antenna element ownership in described services set; Structure for specific user's services set in frameless network is centered by described user terminal, and 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 is chosen above-mentioned multidimensional resource dynamically according to the QoS requirement of self, residing wireless chaining status and mobile status.
Described antenna element is the basic composition unit of the frameless network architecture, is also the basic composition unit of user's services set; It is used for receiving the service request of described user terminal and mutual to the calculation processing unit of its ownership and provide the communication resource according to described calculation processing unit result; Different antenna elements has different characteristics, such as different bay numbers, different transmitting power, different rf frequency, different and change direction and different wave beam forming mode etc.; Therefore, reasonably distribute antenna element to provide the service needs brand-new resource management scheme for the user, not only will suppress the interference between the different antennae unit, more will guarantee mutually to cooperate between the different antennae unit in same services set;
Described calculation processing unit is the core guarantee of the efficient operation of the whole network architecture, and the major function of calculation processing unit is that base-band information is processed, the administration configuration communication resource; It can guarantee can mutually cooperate between the calculation processing unit of different antennae unit ownership, so that more powerful computing ability to be provided, can carry out the interconnection between the calculation processing unit of different antennae unit ownership, also can When building their networks the calculation processing unit of different antennae unit ownership be positioned in a machine room, forms central controlled calculation processing unit.
In above-mentioned communication system, described user terminal has been grasped the dominant right that resource is distributed, can be according to the needs of self, satisfying under the prerequisite of self QoS requirement, and as much as possiblely ask for resource to network side.Yet for network side, be not passive acceptance fully, calculation processing unit can be according to the loading condition of self, disturbance regime in network and channel condition of user terminal etc., select the resource request of agreement or refusing user's, but resource that in a single day calculation processing unit has given user assignment need be followed the principle that service is provided for the user to full capacity.
For communication system of the present invention, from the user terminal angle, system no longer is comprised of the border that residential quarter and residential quarter one by one have, but is comprised of the various resources that have on different antenna elements and these antenna unit.For user terminal, these resources are that characteristics are respectively arranged, and the antenna element and the user distance that for example have are nearer, and wireless link condition is better, can satisfy the business demand of user terminal self high bandwidth.And some antenna element transmitting powers are larger, can satisfy the high-quality business demand of user terminal.
Simultaneously, these resources have priority, and for example, if the current needs of user terminal is with a large bandwidth and at a high rate service, the antenna element that large bandwidth for transmission can be provided of close together is the first-selection of user terminal so; If the current voice service that is in of user terminal, or be in high-speed moving state, the antenna element that high-quality, low bandwidth can be provided so may be the first-selection of user terminal in this situation.In sum, for the building process of antenna element services set, user terminal is at first according to the information of the antenna element of collecting periphery, and according to self situation, builds the Candidate Set of antenna element.And select the preferred collection that can satisfy the subscriber terminal service demand based on system's present load situation and method for managing resource from Candidate Set.Should comprise a plurality of resource request in preferred collection, wherein each resource request has comprised selected antenna element, bandwidth, time slot, code word, space angle etc.User terminal is according to the result of preferred collection, sends respectively request for the calculation processing unit of the different antennae unit ownership in preferred collection.
If the current resource that obtains can't satisfy the QoS requirement of user terminal, user terminal will be on the basis of selecting for the first time so, weed out the resource that can't obtain from preferred concentrating, and again select new preferred collection based on Candidate Set, and again send resource request.User terminal will constantly be chosen resource, until satisfy the service quality of self, and perhaps by this process of system closure.
The frameless network architecture of the present invention further realizes the self adaptation adjustment of control plane and user plane on control plane separates with user plane system configuration basis.For control plane, its Main Function is the operation of control and management all-network agreement.Control plane offers 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 of adjusting timely with maintaining network when network condition changes.Control plane provides the functions such as the front necessary various network information of the data processing forward in the user plane and forwarding inquiries.The self adaptation adjustment of control plane refers to its service range of adjustment that control plane is can be according to the network environment of reality suitable, suppresses to disturb and the purpose of improving energy efficiency to reach.
For user plane, its Main Function is to process and forward user data.Yet user plane need to take the Radio Resource of the overwhelming majority in the task of various planes, and also direct performance performance to indexs such as service quality value plays a decisive role.Thereby the user plane Adaptive adjusting algorithm not only can improve radio resource efficiency efficiently, and can bring the significantly lifting of the performance index such as service quality value.The self adaptation 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, suppresses interference, load balancing, business unloading and improve the purpose such as wireless resource utility efficiency.
In sum, self adaptation adjustment for control plane and user plane, it mainly changes is with control plane and the user plane of coverage are separated equally originally, makes system to regulate the control plane of self and the coverage of datum plane according to real-time network environment, wireless link condition and user's request.And then can support conversion between the calculation processing unit of macrocellular, microcellulor and Pico cell, thereby for example by the transmitting power of adjusting control plane and user plane channel, the calculation processing unit of macrocellular is turned down the calculation processing unit that transmitting power becomes Pico cell, perhaps the calculation processing unit of Pico cell increases the calculation processing unit that transmitting power becomes macrocellular.
for example, at macrocellular, microcellulor, Pico cell, femtocell, relay, the far end radio frequency head, WLAN, under the common heterogeneous network environment that covers of the networks such as 60GHz launch point, the macrocellular calculation processing unit can have the dominant right on monoblock Region control plane, and most of datum plane is by microcellulor, Pico cell, femtocell, relay, the far end radio frequency head, WLAN, the antenna element of 60GHz launch point is born, thereby can provide high bandwidth for the user, high-quality service, can realize again suppressing to disturb, reduce the purposes such as power consumption.
Embodiment two
The present invention also provides a kind of network-building method according to above-mentioned communication system based on the frameless network architecture:
A kind of network-building method based on the frameless network architecture mainly comprises the following steps:
S1. user terminal detects peripheral wireless environment and chooses according to own service demand self adaptation the calculation processing unit that some antenna elements form services set and are committed to the antenna element ownership in described services set;
Described step S1 comprises:
S101. user terminal detects its peripheral wireless environment individually or in the mode of cooperation, such as the quantity of the antenna element that exists, and each antenna element between channel conditions and each antenna element resources such as transmitted power, bandwidth, code word and space angle that can provide;
S102. according to testing result in step S101, the antenna element around user terminal is carried out prioritization, and build some candidate service collection;
S103. according to described user terminal mobile status and business demand, concentrate from described candidate service and choose the preferred service collection; The user concentrates antenna element to send service request to preferred service, is processed by the calculation processing unit that antenna element belongs to;
S104. the calculation processing unit of antenna element ownership in conjunction with current network conditions and the variation of disturbed condition in network after adding user terminal, is selected to adjudicate to preferred pooling of resources, and is provided the instruction that whether allows the user terminal access.When the adding membership and cause network congestion of user terminal, adding of calculation processing unit meeting refusing user's terminal, perhaps when offered load is overweight, the access request of user terminal also can be rejected, or when Internet resources can not satisfy the demand for services of user terminal, the request of user terminal can be rejected equally.The calculation processing unit of antenna element ownership judges in conjunction with current network load state and described preferred service collection whether the communication resource satisfies the demand of user terminal:
If under the feedback that user terminal is received shows the preferred antenna element of concentrating, calculation processing unit all can satisfy user's demand for services, the process of choosing services set stops, and namely preferred collection is the services set of user terminal.
Otherwise, if the feedback that user terminal is received shows the preferred calculation processing unit that has the refusing user's access of concentrating, user terminal is from the preferred antenna element of concentrating under the calculation processing unit of rejecting the refusing user's access, and re-starts the process of choosing of preferred collection, namely jumps to step S103.
S2. in fact, user terminal carry out services set choose this flow process in calculation processing unit under each antenna element also experienced the process of the services set adaptive management configuration communication resource of choosing according to current available network situation and described user terminal.
In described step S2, the administration configuration communication resource comprises allocation of radio resources; Under frameless network-building method, the network environment multi-level, that isomery mixes and the introducing of bidimensional new resources make traditional RRM strategy also inapplicable here.Therefore, need to consider brand-new RRM strategy, other strategies under itself and described network-building method are cooperatively interacted, the service of customer-centric is provided;
For described RRM strategy, can adopt the centralized management method, also can adopt distribution management method.
When adopting the centralized management method, can adopt the method for resource pool, 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.; For example:
S211. all usable radio resources that described in calculation processing unit searching resource pond, the preferred service set pair is answered;
S212. network side compares all available resources and user terminal resource requirement,
Judge whether each usable radio resources satisfies user terminal resource requirement thresholding:
No, the access of refusing user's terminal and network side feed back to the user terminal message of access absolutely by subordinate's calculation processing unit.
Be, according to above-mentioned centralized resources allocation algorithm distributing radio resource.
When adopting the distributed radio resource management strategy, need different calculation processing units to carry out the mutual of information and mutually cooperate to reach the purpose of the whole resource optimal scheme of network, promote the efficient that resource is distributed.In addition, efficiently the 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.; For example:
S221. all usable radio resources that described in each calculation processing unit collaborative searching resource pool, the preferred service set pair is answered;
S222. when Search Results shows that the available resources of calculation processing unit that each antenna element belongs to all can satisfy user's demand for services, feed back to the user and allow the information that accesses, and reach the purpose of overall system performance optimum by the distributed resource allocation algorithm of above-mentioned optimization.Otherwise, feed back to the information that the 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 elements and corresponding access technology are all can be for user's resource.Various types of antenna element supports extensively cooperate, and provide service thereby consist of dissimilar overlay area for the user.The frameless network architecture has merged the concept of heterogeneous network, has dissimilar antenna element in system, and the difference between these antenna unit is embodied in a lot of aspects.At first, in wireless access technology of the same race, the transmitting power that is mainly reflected in the different antennae unit is different, coverage is different, the backhaul mode of link is different, for example, in the LTE network, be connected by IP network between Femtocell and core net, be connected by Radio Link between Relay and eNB.Secondly, between different radio access technologies, its difference is mainly reflected in the incompatible of signaling, for example WLAN and LTE network, LTE network and 3G, 2G network etc.After the process of the choosing of user terminal completion service collection, allocation of radio resources, calculation processing unit connects and obtains service.Yet, due to user terminal in choosing the process of services set, do not relate to the affiliated calculation processing unit type of antenna element of choosing, that is to say that the antenna element in the services set of choosing might belong to dissimilar calculation processing unit, such as WLAN access point and LTEMacro calculation processing unit.This just needs dissimilar calculation processing unit mutually to cooperate, and its cooperating process is specific as follows:
S301. the antenna element under the WLAN access point and the antenna element under the LTE Macro calculation processing unit services set that is in same user, when jointly providing service for the user, both can adopt multiplexing mode that service is provided, and also can adopt the mode of diversity that service is provided.When adopting multiplexing mode, jump to step S232, when adopting the mode of diversity, jump to step S234.
S232.LTE Macro calculation processing unit and WLAN access point are completed the grouping that user terminal is sent information by Signalling exchange, simultaneously to each grouping label, to guarantee carrying out orderly packet combining at user side.
S233. after completing the grouping label, network sends data to the user by antenna element, and carries out quality assurance end to end accordingly, and for example sliding window is controlled, HARQ(Hybrid Automatic Repeat Request) the mixed automatic retransfer request etc.
S234.LTE Macro calculation processing unit and WLAN access point calculation processing unit are completed the synchronizeing of user terminal by Signalling exchange, and the data that send with different antennae unit under guaranteeing arrive the user simultaneously.
S235. after completing synchronously, described antenna element sends data to the user jointly, and carries out quality assurance end to end accordingly, and for example sliding window is controlled, HARQ etc.
In described step S2, the administration configuration communication resource comprises that also the services set of mobile subscriber terminal substitutes; Based on the frameless network architecture, user terminal selects suitable antenna element and combination of resources to access according to its actual demand and the accessible antenna element that can find, there is no traditional residential quarter concept.Therefore from the angle of user terminal, switching will become the replacement of selected antenna element services set, and the conventional handoff concept also will disappear.Movement along with 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 and no longer satisfy the communication requirement of user terminal, and then can't satisfy the QoS requirement of user terminal.In addition, also have other condition and trigger the process that user terminal carries out the services set replacement, for example, other resource performances available on certain antenna element are relatively poor, this has other users to use same asset to cause larger interference to cause around may being, can reject this moment the minimum antenna element of its throughput contribution, and attempt other antenna element of access.Simultaneously, when carrying out the services set replacement, also can merge a lot of prior aries, for example, 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, the user initial time t1 by the antenna element under the macrocellular network LTE Macro1 at its place take and near the antenna element of femtocell network LTE Femto and the antenna element under WLAN1, WLAN2 provide service as it.Along with the movement of user terminal, the signal quality of each antenna element in its services set is variation gradually, thereby the services set that triggers user terminal substitutes process.At t2 constantly, LTE Femto, the WLAN1 in user terminal deletion services set and the antenna element of WLAN2, and introduce the antenna element of the good LTE Relay of wireless link condition it near.Yet, along with being moved further of user terminal, at t3 constantly, user terminal moves to the intersection that three macrocellular network antenna elements cover, at this moment, user terminal need to provide service for it jointly by the antenna element of LTE Macro1, LTE Macro2 and GSMMacro.Replacement process and the process in above-mentioned 3 moment of the services set of the t4 moment and t5 moment user terminal are similar, all carry out deletion and the gravity treatment of the antenna element in services set; Wherein, to carry out the process of replacement of services set as follows for each user terminal:
S241. wireless signal around the real-time collection of user terminal when mobile, the radio channel state of monitoring ambient antenna unit, and constantly upgrade the candidate service collection of self according to monitoring result, and each antenna element that candidate service is concentrated sorts, while compares with the antenna element that current service is concentrated, and the radio channel state of the antenna element of constantly current service being concentrated compares with the threshold value of presetting, when monitor value is concentrated when having the better antenna element of radio channel state lower than threshold value and candidate service, the user triggers the process that services set substitutes.
S242. the user carries out the process (with reference to the process of above-mentioned user's services set structure) of choosing services set.
In described step S2, the administration configuration communication resource also comprises business unloading management; The business unloading referred to as Offloading, is a technology that data traffic heavy in network is unloaded to other networks.The Offloading operation can be arranged by network, also can be triggered by user terminal.The condition that triggers this operation can be stored in subscriber terminal equipment, also can be stored in the webserver, even it can be divided into two parts, exists respectively in subscriber terminal equipment and the webserver.For user terminal, when the application of opening needs higher accessing cost for data and monitor wider available bandwidth from network environment, can trigger the Offloading operation.For network, when offered load is overweight when causing network congestion, can trigger the Offloading operation.Can form perfect complementary network technology 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 the capacity equalization, near the underloaded network mode that namely unloads by business is transferred to the load in the heavy duty network, perhaps business is unloaded in underload antenna element overlay area by heavy duty antenna element overlay area, thereby realizes suppressing to disturb, improve the purposes such as network congestion, hoist capacity, raising resource utilization.For the user initiated process, it was initiatively periodically measured wireless environment on every side, such as the mobile terminal of supporting the WLAN function, and can periodic search wlan network on every side.After a known or open wlan network is found, trigger the Offloading process.For network is initiated process, rm-cell in network is when between each antenna element, traffic load differs greatly in network, can initiate the Offloading implementation, such as there being the situation of one or more underload antenna elements near the heavy duty antenna element, perhaps through prediction, it is congested that rm-cell finds that some antenna elements overlay area will occur, in these situations, the Offloading process is triggered in the capital, and business rationally is unloaded in other antenna elements.For example:
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 the Offlaoding process, in conjunction with heavy duty calculation processing unit present position, send the business unload request to its peripheral underload calculation processing unit;
S253. when underloaded calculation processing unit is received the load unload request of network side transmitted, underloaded calculation processing unit is according to the situation of self, such as whether causing to current service-user serious interference after entering in load, perhaps whether exist enough Resource Supplies to decide to the load that is about to enter and allow or refuse the load unload request;
If S254. all underload calculation processing units are all refused described business unload request, the unloading of termination business; Otherwise, select a finishing service unloading from the calculation processing unit that allows the business unload request.
Further, for the purpose such as disturbing in efficiency and Suppression network, control plane of the present invention can be controlled the wider control plane of calculation processing unit management still less as far as possible, meanwhile controls more antenna elements management datum plane more among a small circle.In above-mentioned scene, the macrocellular calculation processing unit can be managed the control plane in whole coverage, and its datum plane can dwindle as much as possible, the low bandwidth speech business that can guarantee so a small amount of user covers, and can avoid again its antenna element to Pico cell antenna element, microcellulor antenna element, femtocell antenna element, relay antenna element, far end radio frequency head (RRH) and WLAN access point to cause severe jamming.Calculation processing unit for microcellulor, Pico cell, femtocell, relay, far end radio frequency head and WLAN access point, its control plane can be as much as possible little, even its control plane can rely on the control plane of macrocellular calculation processing unit fully, can realize like this and the cooperating of macrocellular calculation processing unit, can reduce power consumption again.And require the user of large bandwidth, high quality-of-service value demand for those, can provide the service of high-throughput for it by the antenna element of near the microcellulor it, Pico cell, femtocell, relay, far end radio frequency head and WLAN access point.When occurring a not user under any datum plane covers in the control plane display network, the covering that the antenna element of macrocellular needs near the antenna element of suitable its datum plane of expansion or Position Control residing according to user microcellulor, Pico cell, femtocell, relay, far end radio frequency head and the WLAN access point it to enlarge its datum plane thinks that the user provides service.
Above execution mode only is used for explanation the present invention; and be not limitation of the present invention; the those of ordinary skill in relevant technologies field; without departing from the spirit and scope of the present invention; can also make a variety of changes and modification, so all technical schemes that are equal to also belong to protection category of the present invention.
Claims (11)
1. the communication system based on the frameless network architecture, is characterized in that, comprises calculation processing unit and the user terminal of some antenna elements, each described antenna element ownership;
Described user terminal detects peripheral wireless environment and chooses according to the own service demand calculation processing unit that some antenna elements form services set and are committed to the antenna element ownership in described services set;
Described antenna element is used for receiving the service request of described user terminal and provides the communication resource to the calculation processing unit of its ownership and according to the result of described calculation processing unit alternately;
Described calculation processing unit, the services set administration configuration communication resource of choosing according to current available network situation and described user terminal.
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 a plurality of antenna arrays.
3. a kind of communication system according to claim 1 and 2, is characterized in that, thereby the control plane of described communication system and user plane adjust according to the network environment of reality the purpose that its service range reaches inhibition interference and improving energy efficiency; Thereby described communication system can realize according to the coverage that every data that control plane is collected are regulated its control plane and datum plane the mutual conversion between dissimilar calculation processing unit.
Described in an any one based on the network-building method of the communication system of the frameless network architecture, it is characterized in that, comprise step:
S1. user terminal detects peripheral wireless environment and chooses according to own service demand self adaptation the calculation processing unit that some antenna elements form services set and are 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.
5. a network-building method according to claim 4, is characterized in that, described step S1 comprises:
S101. user terminal detect the antenna element that its periphery exists quantity, and each antenna element between channel conditions and each antenna element transmitted power, bandwidth, code word and the space angle that can provide;
S102. build some candidate service collection according to testing result in step S101;
S103. according to described user terminal mobile status and business demand, from described candidate service concentrate choose the preferred service collection and wherein antenna element send service request;
S104. the calculation processing unit of antenna element ownership judges in conjunction with current network conditions and described preferred service collection whether the communication resource satisfies the user terminal demand:
To jump to step S2;
No, reject the wherein antenna element of refusing user's terminal access, upgrade the candidate service collection and jump to step S103.
6. a described network-building method, 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 the distribution of distributed wireless resource.
7. a network-building method according to claim 6, is characterized in that, described centralized radio resource allocation comprises:
S211. all usable radio resources that described in calculation processing unit searching resource pond, the preferred service set pair is answered;
S212. judge whether each usable radio resources satisfies user terminal resource requirement thresholding:
No, refusing user's terminal access;
Be, according to centralized resources allocation algorithm distributing radio resource.
8. a network-building method according to claim 7, is characterized in that, described distributed wireless resource is distributed and comprised:
S221. all usable radio resources that described in each calculation processing unit collaborative searching resource pool, the preferred service set pair is answered;
When S222. the usable radio resources of the calculation processing unit of each antenna element ownership all satisfies user terminal and requires according to distributed resource allocation algorithm assigns Radio Resource.
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 cooperation between dissimilar calculation processing unit; Cooperation between described dissimilar calculation processing unit comprises:
Dissimilar calculation processing unit adopts multiplex mode that service is provided, and completes grouping to described user terminal information by Signalling exchange, simultaneously each grouping label is ensured the packet combining of order; Send data to user terminal by antenna element, and carry out quality assurance end to end accordingly;
Dissimilar calculation processing unit adopts diversity mode that service is provided, and completes synchronous to described user terminal information by Signalling exchange, and each antenna element sends data to user terminal jointly, and carries out quality assurance end to end accordingly.
10. a network-building method according to claim 9, is characterized in that, in described step S2, the administration configuration communication resource comprises that also the mobile subscriber terminal services set substitutes; Described mobile subscriber terminal services set substitutes and comprises:
S241. described user terminal detects peripheral wireless environment in real time, and upgrades described candidate service collection according to testing result;
S242. judge in the service quality value of current service collection that it is whether higher than the service quality value of all candidate service collection during lower than preset value:
Can not trigger services set and substitute;
No, concentrate from all candidate service and choose the highest services set replacement current service collection of service quality value.
11. a network-building method according to claim 10 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 the Real-Time Monitoring line period of going forward side by side gathers;
S252. in conjunction with heavy duty calculation processing unit present position, send the business unload request to its peripheral underload calculation processing unit;
S253. the underload calculation processing unit of periphery judges whether to refuse the business unload request in conjunction with self offered load;
If S254. all underload calculation processing units are all refused described business unload request, the unloading of termination business; Otherwise, select a finishing service unloading from the calculation processing unit that allows the business unload request.
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