CN102612147B - Cooperation-based resource allocation method in heterogeneous fusion network - Google Patents
Cooperation-based resource allocation method in heterogeneous fusion network Download PDFInfo
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- CN102612147B CN102612147B CN201210099818.4A CN201210099818A CN102612147B CN 102612147 B CN102612147 B CN 102612147B CN 201210099818 A CN201210099818 A CN 201210099818A CN 102612147 B CN102612147 B CN 102612147B
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Abstract
The invention provides a cooperation-based resource allocation method in a heterogeneous fusion network, which mainly solves the problem that resources of a traditional heterogeneous network cannot be fully utilized. The cooperation-based resource allocation method in the heterogeneous fusion network comprises the following implementation steps of: 1-, in the heterogeneous fusion network which consists of a network A and a network B, if the network A has resources directly accessed to a core network, applying resources from the network A by the network B and accessing the resources applied from the network A to the core network; 2-, sending a communication request to an access point a of the network A by an access point b of the network B and an authorized user of the network A to apply the resources; 3-, allocating the resources for the access point b of the network B by the access point a of the network A and transmitting the resources, and when the access point a of the network A cannot meet the requirement of the authorized user of the network A, enabling the authorized user of the network A to seek the cooperative transmission of the network B; and 4-, sending own data to the access point b of the network B by the authorized user of the network A of seeking cooperation, and after the data of a user of the network B and the data of the authorized user of the network A are fused by the access point b, applying the resources from the access point a of the network A to complete transmission. The cooperation-based resource allocation method in the heterogeneous fusion network can be used for optimizing the throughput of the heterogeneous fusion network.
Description
Technical field
The invention belongs to communication technical field, particularly resource allocation methods in heterogeneous network, can be used in heterogeneous network optimized throughput process.
Background technology
Wireless communication technology had obtained fast development in the last few years, the wireless communication system emerging in an endless stream provides the network environment of isomery for user, comprise Wireless Personal Network Bluetooth, WLAN (wireless local area network), if Wi-Fi, wireless MAN WiMAX, public mobile network are as 2G, 3G, satellite network, and Ad Hoc network, wireless sensor network etc.Although these wireless networks, for user provides diversified communication mode, access means and ubiquitous access service, are very easy to people's life.But rational allocation and the use of diversified network to resource had higher requirement.At present, the fusion between heterogeneous network still has a lot of problems.Be mainly manifested in: heterogeneous network converged is abundant not, between network and network, contact lessly, between heterogeneous networks, lack enough information interactions and resource-sharing.This is because the operation between heterogeneous network is relatively independent at present, seldom has the interchange of the network information, and sharing of resource is just more rare.Because internetwork resource information is mutual not in time or insufficient problem that will inevitably cause resource not to be used appropriately.For example, in the same time period, in same panel region, some Network is busy, resource anxiety, and a part of user even can not get service, and other networks are comparatively idle, have a large amount of frequency spectrum resources to be not yet utilized.
For the inadequate problem of heterogeneous network converged, there are in recent years a lot of relevant solutions, solve the resource utilization issue in heterogeneous network, but these methods all exist certain deficiency.Such as more popular in recent years cognition network and communication for coordination, although can solve to a certain extent the resource utilization issue in heterogeneous network, also shortcoming of various degrees all.For example, in the cognition network based on collaborative, on the one hand, authorized user can preferentially obtain the right to use of resource, in the time that in net, resource has residue, cognitive user just can utilize these surplus resources for self communication, resource is fully used, but this utilization can not get enough guarantees, once authorized user has demand, cognitive user just must discharge these resources, sometimes even can produce call drop, on the other hand, in the time of the channel conditions deteriorate of authorized user, can seek the cooperative transmission of cognitive user, give cognitive user by the own resource right to use, this cognitive user is sent to destination by the resource obtaining by the data collaborative of authorized user, owing to having added communication for coordination, under the help of cognitive user, make the authorized user that originally cannot communicate complete communication task, but this is very unfriendly to participating in collaborative cognitive user, cognitive user almost can not get any benefit, not only can increase the complexity of equipment of itself and algorithm, also consumed power in a large number.
Summary of the invention
Object of the present invention is exactly for the deficiencies in the prior art, proposes in a kind of isomery UNE the resource allocation methods based on cooperation, and with by working in coordination between network, the resource that reasonable distribution is limited, realizes the maximization of network throughput.
Technical scheme of the present invention is: under the A at based on collaborative, the scene of two heterogeneous network convergeds of B, suppose that authorized user is by access point a access A net, cognitive user is by access point b access B net, B net is core network access directly, need to complete by access point b the communication of B network users to access point a application resource.Access point b just can be used as a user and other authorized user shared resources in A net like this.When the channel conditions deteriorate of authorized user, when needs are collaborative, first the data of self are sent to access point b, access point b can first merge the data of this authorized user and B network users, applies for resource subsequently according to the total amount of data unification after merging to access point a.After resource bid success, access point b can send to access point a by the data of fusion, and the data that the data of finally by a, b being sent and A net authorized user are sent merge, and send into subsequently core net, complete A, two network users' of B communicating requirement.
The concrete steps that realize technical solution of the present invention comprise as follows:
(1) establish in the isomery UNE of A, two network compositions of B, A net has the resource of direct core network access, and B net need be used resource to A net and carry out core network access;
(2) the access point b of the authorized user of A net and B net, sends communication request to the access point a of A net simultaneously, and reports business demand separately, waits replying of access point a;
(3) the access point a of A net, receiving after the request of the authorized user of A net and the access point b of B net, is first directly B net access point b Resources allocation, and starts transmission; Then according to the channel conditions Resources allocation of A net authorized user: if the authorized user of A net can obtain the resource that meets A net authorized user own service demand, directly start transmission according to the resource of distributing, otherwise check the collaborative request times of the authorized user of A net, if collaborative request times is greater than the collaborative request times of predefined maximum, blocked to fall; Otherwise the authorized user of informing A net enters collaborative application process, execution step (4);
(4) authorized user of A net sends collaborative application to the access point b of B net, and reports the business demand of self;
(5) after the collaborative application that the access point b of B net sends at the authorized user of receiving A net, if first weigh the authorized user of access A net, can or can not exceed the maximum size of B net self network, if can exceed, refusal is collaborative, otherwise accept the collaborative request of the authorized user of A net, and reply to its transmission license;
(6) if the authorized user of A net receives that the collaborative license that the access point b of B net sends replys, data are directly issued to the access point b of B net, execution step (7); Otherwise by collaborative request times+1 of the authorized user of A net, return to step (2);
(7) the access point b of B net merges the cognitive user of B net and the data of the authorized user that needs collaborative A net, and applies for resource according to the data volume after merging to the access point a of A net, returns to step (2).
Tool of the present invention has the following advantages:
1) in the isomery UNE that the present invention proposes, A network can be lent B Internet resources and complete B network cognitive user's core net access, and B network can help the transmission of A network authorization user collaborative, owing to having adopted helping each other of two networks, not only solve the directly problem of core network access of B network, also the situation of effectively having alleviated A Internet resources anxieties, makes the resource utilization relative equilibrium of two networks, thereby realizes the mutual supplement with each other's advantages of two networks.
2) adopt cooperative transmission schemes of the present invention not only can in the situation that channel conditions is undesirable, meet the communication requirement of authorized user, also can be to authorized user own resource, as having significantly, saves power, because authorized user only need send to its data the access point b of B net, access point b can complete remaining cooperative transmission work, and authorized user has also met the demand of communication in saving own resource like this.
3) the present invention is in cooperative transmission, because access point b can again apply for resource together with self network data and collaborative user's data fusion, thereby can obtain best resource distribution effects according to channel conditions in real time, before comparing, in technology, only on one or several Resource Block, distribute and will optimize much.
4) the present invention is owing to adopting the access point b of a multimode to bear the task of cooperative transmission, thereby compare before technology, not only reduce the requirement to B network users terminal equipment complexity and power, also reduce the complexity of whole system, make whole system look more directly perceived, be also convenient to the analysis of systematic function.
Brief description of the drawings
Fig. 1 is the flow chart of collaborative application process of the present invention;
Fig. 2 is application example scene graph of the present invention.
Embodiment
As Fig. 2, the scene that the present invention uses be isomery UNE taking 3G LTE and WLAN as example, but be not limited to this net, wherein A network is LTE network, have the resource of direct core network access, A net access point a is the access point BS of LTE net, adopts OFDMA mode to access; B network is wlan network, the access point AP that the access point of B net is WLAN, the communication protocol of employing 802.11g.Suppose directly core network access of WLAN net, need to carry out core network access to the access point BS application resource of LTE net.The resource that can distribute in different concrete networks is different, and the resource of this routine indication specially refers to the subcarrier under OFDMA access way.
With reference to Fig. 1, the present invention is directed to Fig. 2 scene, to carry out the step of resource distribution as follows:
Step 1, artificially sets maximum collaborative request times K according to the resource utilization of the isomery UNE of current LTE net and WLAN net composition: if the resource utilization of current isomery UNE is greater than 80%, establish K=7; If the resource utilization of current isomery UNE is less than 80%, establish K=15.
Step 2, the authorized user of the access point AP of WLAN net and LTE net sends communication request to the access point BS of LTE net simultaneously, and reports the transmission rate requirements of business to be separately respectively X and Y, waits the replying of access point BS of LTE net.
In this example, the demand of the transmission rate that can provide subcarrier is all provided the demand of resource all users.
Step 3, the access point BS of LTE net, receiving after the communication request of the authorized user of LTE net and the access point AP of WLAN net, first directly meets the subcarrier of its transmission rate requirements X for the access point AP of WLAN net distributes, and starts transmission; Then be its allocation of subcarriers according to the channel conditions of the authorized user of LTE net: under the current channel conditions of the authorized user of LTE net, if the subcarrier that the access point BS of LTE net provides can meet the transmission rate requirements Y of the authorized user of LTE net, utilize the subcarrier satisfying the demands directly to start transmission, otherwise check the collaborative request times of the authorized user of LTE net, if collaborative request times is greater than maximum collaborative request times K, the authorized user of LTE net is blocked to fall; Otherwise the authorized user of informing LTE net enters collaborative application process, execution step 4.
The collaborative request times K of maximum that this step arranges, mainly to consider if the authorized user of LTE net is sought collaborative all unsuccessful continuously several times, illustrate that current LTE network and wlan network are all very busy, cannot meet the transmission rate requirements of the authorized user of LTE net, at this moment can only be forced to block to fall the authorized user of LTE net.
Step 4, the authorized user of LTE net sends collaborative application to the access point AP of WLAN net, reports the transmission rate requirements Y of own service, waits replying of WLAN net access point AP.
Step 5, the access point AP of WLAN receives after the collaborative application and transmission rate requirements Y that the authorized user of LTE net sends, and first obtains all users' of current wlan network the transmission rate requirements N of total business and the saturation throughput C of wlan network; If N+Y > is C, refuse the collaborative application of the authorized user of LTE net; Otherwise accept the collaborative application of the authorized user of LTE net, send license to it and reply.
The saturation throughput C of the WLAN net described in this step, is to worsen because the authorized user of too much receiving LTE to net causes WLAN net self communication environment for fear of WLAN net, and the situation that communication quality declines, plays the effect of a protection to wlan network.The saturation throughput C of WLAN net is difference along with the difference of WLAN net employing communication protocol, under the communication protocol of the 802.11g this example Suo Shu, and C=54Mbps*0.8=43.2Mbps.
Step 6, the authorized user of LTE net is according to whether receiving that the collaborative license of the access point AP of WLAN net replys the step that decides follow-up execution: if the authorized user of LTE net has received that collaborative license replys, its data is directly sent to the access point AP of WLAN, execution step 7; Otherwise make collaborative request times+1, return to step 1.
Step 7, the access point AP of WLAN net puts into buffer memory with the data that need the authorized user of collaborative LTE net to send according to precedence by all users in WLAN net, Deng application after subcarrier, unified putting on subcarrier transmitted, and apply for subcarrier according to the transmission rate requirements of total business of all data in buffer memory to the access point BS of LTE net, return to step 1.
Terminological interpretation
3G:3rd Generation; 3G (Third Generation) Moblie technology;
LTE:Long Term Evolution; Long Term Evolution;
WLAN:Wireless Local Area Network; WLAN;
BS:Base Station; Base station;
AP:Access Point; Access point;
OFDMA:Orthogonal Frequency Division Multiple Access; OFDM.
Claims (5)
1. the resource allocation methods based on cooperation in isomery UNE, comprises the steps:
(1) establish in the isomery UNE of A, two network compositions of B, A net has the resource of direct core network access, and B net need be used resource to A net and carry out core network access;
(2) the access point b of the authorized user of A net and B net, sends communication request to the access point a of A net simultaneously, and reports business demand separately, waits replying of access point a;
(3) the access point a of A net, receiving after the request of the authorized user of A net and the access point b of B net, is first directly B net access point b Resources allocation, and starts transmission; Then according to the channel conditions Resources allocation of A net authorized user: if the authorized user of A net can obtain the resource that meets A net authorized user own service demand, directly start transmission according to the resource of distributing, otherwise check the collaborative request times of the authorized user of A net, if collaborative request times is greater than the collaborative request times of predefined maximum, blocked to fall; Otherwise the authorized user of informing A net enters collaborative application process, execution step (4);
(4) authorized user of A net sends collaborative application to the access point b of B net, and reports the business demand of self, waits the replying of access point b of B net;
(5) after the collaborative application that the access point b of B net sends at the authorized user of receiving A net, if first weigh the authorized user of access A net, can or can not exceed the maximum size of B net self network, if can exceed, refusal is collaborative, otherwise accept the collaborative request of the authorized user of A net, and reply to its transmission license;
(6) if the authorized user of A net receives that the license that the access point b of B net sends replys, data are directly issued to the access point b of B net, execution step (7); Otherwise by collaborative request times+1 of the authorized user of A net, return to step (2);
(7) the access point b of B net merges the cognitive user of B net and the data of the authorized user that needs collaborative A net, and applies for resource according to the data volume after merging to the access point a of A net, returns to step (2).
2. method according to claim 1, in wherein said step (7), the access point b of B net merges the cognitive user of B net and the data of the authorized user that needs collaborative A net, refers to that access point b is placed on the data of the data of the B net cognitive user receiving and A net authorized user the access point a that sends to A net on same Resource Block.
3. method according to claim 1, meets the resource of A net authorized user own service demand in wherein said step (3), refer to that resource that access point a provides can meet the requirement of A net authorized user communication delay, transmission rate and delay variation.
4. method according to claim 1, the wherein described collaborative request times of maximum of step (3), artificially to determine according to the network condition of current A net and B net: if when the resource utilization of current A, B net is greater than 80%, maximum collaborative request times is got the numerical value between 5 to 10, if when the resource utilization of current A, B network is less than 80%, maximum collaborative request times is got the numerical value between 10 to 20.
5. method according to claim 1, the maximum size of the B net in wherein said step (5) self network, refers to that B nets maximum number of user or the maximum throughput that can hold, concrete numerical value is determined according to the characteristic of the concrete B net adopting.
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| CN104168662B (en) * | 2013-05-16 | 2018-07-20 | 华为技术有限公司 | Channel access method and access device |
| CN105680932A (en) * | 2016-03-02 | 2016-06-15 | 天津凯普卫星导航通信技术有限公司 | Satellite mobile message data communication system and communication method |
| CN106792824B (en) * | 2016-12-29 | 2019-11-12 | 重庆邮电大学 | Recognize heterogeneous wireless network robust resource allocation methods |
| CN113573316B (en) * | 2021-07-15 | 2024-02-20 | 中国人民解放军陆军工程大学 | Method for temporarily changing private authority of private mobile communication network user |
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