CN102638853A - QoS (Quality of Service) method for guaranteeing multi-service backhaul of home NodeB - Google Patents

Abstract

The invention relates to a QoS (Quality of Service) method for guaranteeing the multi-service backhaul of a home NodeB and belongs to the technical field of mobile communications. According to the QoS method for guaranteeing the multi-service backhaul of the home NodeB, a home NodeB gateway queries a QoS information table to obtain QoS parameter information of a request service according to the type of the request service of a subscriber, and QoS information occupied when the current subscriber initiates a session is added to the QoS information table; after the home NodeB gateway carries out QoS negotiation, radio access bearer connection between the home NodeB gateway and the home NodeB and radio access bearer connection between the home NodeB and the subscriber are established; and after the subscriber receives core network services, the radio access bearer connection is disconnected, and the QoS information table is modified. The QoS method for guaranteeing the multi-service backhaul of the home NodeB has the advantages that the QoS information table is dynamically updated, and broadband resources occupied by completed sessions are promptly released; and data are buffered according to a priority order, so that various real-time service needs of the home NodeB are guaranteed, and meanwhile, the user experience is improved.

Description

A kind of QoS method that ensures Home eNodeB multi-service passback

Technical field

The present invention relates to a kind of QoS method that ensures Home eNodeB multi-service passback, belong to the mobile communication technology field.

Background technology

Along with the development of mobile communication industry, the user is strong for the increasing demand of high-quality voice and high-speed data service.Therefore in the standardized process of LTE, the notion and the technology of Home eNodeB (Home eNodeB) are arisen at the historic moment, and the new approaches as solving indoor coverage receive the extensive concern of each operator and equipment vendor.

Home eNodeB is a kind of small base station equipment of using towards the client of family, has characteristics such as transmitting power is low, coverage is little.Yet be different from the highly reliable special line backhaul mode of macro base station, Home eNodeB with fixed broadband network as its backhaul network.As shown in Figure 1, in the transmission system framework of Home eNodeB, Home eNodeB could get into mobile core network after need passing through the transmission of Access Network and metropolitan area network.The access way of Home eNodeB mainly is divided into following three kinds: ADSL (Asymmetrical Digital Subscriber; Asymmetric digital line access), PON (Passive Optical Network; The optical fiber access), LAN (Local Area Network, Ethernet inserts).

The QoS that Home eNodeB provides (Quality of service, service quality) not only depends on the disposal ability of radio open and core net, and also depends on the QoS situation of backhaul network (Backhaul network) transmission to a great extent.Home eNodeB need be shared limited fixed broadband resource with home network devices such as computer, IPTV, VoIP, and the business of therefore the giving Home eNodeB especially QoS of real-time service such as voice and video phone has been brought very big challenge.In addition, Home eNodeB adopts the Internet network as its backhaul network, but Internet often can't guarantee needed QoS as the IP network of do one's best (best-effort).Therefore the QoS that ensures Home eNodeB multi-service passback becomes the problem that operator and domestic consumer more and more are concerned about.For different access waies, its corresponding QoS support method is also different, and backhaul network and Home eNodeB have also brought a difficult problem to security mechanism when not belonging to same operator.

Summary of the invention

Technical problem to be solved by this invention is the deficiency to the above-mentioned background technology, and a kind of QoS method that ensures Home eNodeB multi-service passback is provided.

The present invention adopts following technical scheme for realizing the foregoing invention purpose:

A kind of QoS method that ensures Home eNodeB multi-service passback comprises the steps:

Step 1, subscriber terminal equipment sends the request of access to Home eNodeB, and user terminal receives at Home eNodeB and inserts request back access to family base station;

Step 2, Home eNodeB sends register requirement to the femto gateway control module, and the femto gateway control module is set up the QoS information table;

Step 3, the femto gateway control module is sent the subscriber terminal equipment initialization information to core net;

Step 4, subscriber terminal equipment sends the request service to core net, and core net is carried out authentication to the qos parameter of request service;

Step 5, Home eNodeB is worn wide according to the corresponding qos parameter ranking score of subscriber terminal equipment requested service type, and core net is sent the RAB agreement and is replied to the femto gateway control module;

Step 6, femto gateway control module are carried out the negotiation of wireless access side qos parameter, and femto gateway control module and Home eNodeB are set up RAB;

Step 7, subscriber terminal equipment and Home eNodeB are set up RAB, and Home eNodeB is given the femto gateway module with final RAB QoS feedback information, and Home eNodeB upgrades the QoS information table;

Step 8, Home eNodeB sends to core net with wireless access side QoS negotiation result;

Step 9, Home eNodeB and femto gateway module send to subscriber terminal equipment with the information that core net receives service;

Step 10, Home eNodeB analysis connect the packet that subscriber terminal equipment sends, and the identification COS will be served to be mapped on other Permanent Virtual Path of different priorities according to priority orders and transmitted;

Step 11: the difference according to access network type lines up to be mapped to according to the priority VLAN with Permanent Virtual Path;

Step 12, the metropolitan area network convergence router is carried out Bandwidth Management, congestion management;

Step 13, the subscriber terminal equipment conversation end, core net is sent Iu interface release command message to the femto gateway module, the Iu interface resource between release of femto gateway module and the Home eNodeB;

Step 14 discharges Home eNodeB and is connected with RAB between the subscriber terminal equipment, and Home eNodeB discharges the bandwidth resources of distribution.

The present invention adopts technique scheme, has following beneficial effect: dynamically update the QoS information table, in time discharge and accomplish the broadband resource that dialogue takies; According to the priority orders buffered data, guaranteed the demand of the various real time business of Home eNodeB, promoted user experience simultaneously.

Description of drawings

Fig. 1 is the sketch map of Home eNodeB transmission system.

Fig. 2 is the sketch map of HeNB QoS control module and HeNB GW QoS control module.

Fig. 3 is the sketch map of ADSL access way QoS support method.

Fig. 4 is the sketch map of PON access way QoS support method.

Fig. 5 is the sketch map of LAN access way QoS support method.

Fig. 6 is the sketch map of IEEE 802.1Q frame format.

The signaling process figure of HeNB multi-service passback when Fig. 7 is ADSL for access way.

Embodiment

Be elaborated below in conjunction with the technical scheme of accompanying drawing to invention:

Home eNodeB transmission system as shown in Figure 1, the mobile device in the home network is connected to Home eNodeB HeNB, and HeNB belongs to subscriber terminal equipment, the major function of integrated NodeB and RNC.Home eNodeB is connected with local area network (LAN) through different Access Networks such as ADSL, PON, LAN.

Being connected between femto gateway HeNB GW and the HeNB is called backhaul (Backhaul).Equipment in the home network could get into mobile core network through HeNB GW after need passing through the transmission of Access Network and metropolitan area network.HeNB GW is responsible for signaling between HeNB and the CN and data are converged and distribute also responsible simultaneously registration and access control to HeNB, UE.

As shown in Figure 2, HeNB QoS control module is arranged in the HeNB, and HeNB GW QoS control module is arranged in the HeNB GW.

HeNB QoS control module comprises service identification module, bandwidth allocation module, data cache module, data re-transmitting module, qos parameter table.The function of each module is following:

Service identification module: following HeNB will as merging WiFi AP (Acess Point), STB (STB), comprise mobile phone, landline telephone, notebook to integrated form evolution, and television set can both be linked into HeNB.Therefore HeNB receives the packet that each service terminal sends, and can distinguish this service according to the diffserv field DS in the data message (Differentiated Services) and belong to which kind of type.

Bandwidth allocation module: HeNB QoS control module can be according to the type of business, and information such as the type of access band and QoS grade are carried out rational allocated bandwidth work.Allocated bandwidth can also have the function of RSVP in addition, according to the priority level of Business Stream, is the traffic assignments bandwidth reserved.QoS information can be obtained by inquiry qos parameter table.

HeNB at first distinguishes the datagram of receiving through service identification module, carries out the distribution of bandwidth according to different business types.In order to guarantee the QoS of HeNB multi-service passback, therefore must guarantee certain return bandwidth, all kinds of professional institutes bandwidth to ask for an interview to table 1.

Table 1

Data cache module: in order to reduce shake that backhaul network the produces influence to QoS, HeNB QoS control module has the effect of metadata cache, is transmitted to the terminal use of HeNB after the data that receive are ranked, sorted again.

The data re-transmitting module: HeNB QoS control module and HeNB GW QoS control module are coordinated each other, and when finding packet when backhaul network is lost, two intermodules are set up the packet retransmission mechanism, to remedy the influence of backhaul network to the quality of service transmission.

The qos parameter table: be used to the qos parameter value that provides corresponding, can comprise the information such as bandwidth, priority, time delay, shake and packet loss of counterpart terminal and type of service with type of service, and user's qos policy.

HeNB GW QoS control module comprises that QoS information inquiry module, Dynamic Maintenance HeNB QoS information table, qos parameter are consulted, the data re-transmission module, and the function of each module is following:

QoS information inquiry module: HeNB GW QoS control module can be inquired about the QoS CAMEL-Subscription-Information of each HeNB.This information can be stored among the HSS (Home Subscriber Server, home subscriber server).

Dynamic Maintenance HeNB QoS information table: HeNB GW sets up the session information (comprising UE sign and the shared QoS information of session that session is corresponding) of corresponding HeNB current service session through the QoS control module.Concrete QoS information can be the RAB qos parameter (RAB, Radio Access Bearer) that this session is used, like TC (traffic class), MBR (Maximum Bit Rate), GBR (assurance bit rate) etc.

Qos parameter is consulted: HeNB QoS control module is carried out the negotiation of qos parameter with the terminal after receiving the QoS negotiation result from the CN feedback once more, sets up radio bearer between HeNB and the UE.The QoS negotiation result of CN feedback is the QoS CAMEL-Subscription-Information according to this UE that stores among the QoS solicited message of UE and the HSS, and the qos policy acquisition of combination UE.But do not consider the actual conditions of HeNB wireless side, so HeNB need carry out the negotiation of QoS according to active user and professional situation, the QoS of assurance UE again.

The qos parameter table: be used to the qos parameter value that provides corresponding, can comprise the information such as bandwidth, priority, time delay, shake and packet loss of counterpart terminal and type of service with type of service, and user's qos policy.The minimum requirements of speech business and visual telephone business QoS is as shown in table 2.

?	Voice	Visual telephone
			Time delay	Uplink time delay < 200ms, descending time delay < 2.5s	<100ms
Shake	<100ms	<70ms
			Packet loss	<20%	<5%
Bandwidth	>;100kbit/s	>;100kbit/s

Table 2

The data re-transmission module: cooperate with the control module of HeNB QoS side, set up retransmission mechanism, the packet that will lose is retransmitted, and reduces the influence of packet loss to system, has taken care of yourself the QoS of passback.

At first HeNB QoS control module will add the function of supporting priority scheduling.Be the ATM transmission between HeNB and the DSLAM equipment; The characteristic of ATM transmission is fit to adopt the scheme of dividing a plurality of PVC; Because HeNB QoS control module can be carried out the mapping of PVC according to priority with the HeNB loaded service, need use IEEE 802.1p to carry out mark at two layers.

The present invention can be divided into the QoS of different service 8 kinds of priority, from 0-7.Key business needs absolute bandwidth guarantee, like control signaling, session service etc., can adopt priority 7; Important business, for example interaction service etc. need provide preferential bandwidth occupancy ability, can adopt priority 2-6, and to some bandwidth and the insensitive business of time delay, can adopt priority 0-1 etc. like clock signal.The QoS table of grading of different business is as shown in table 3, and concrete deployment can adjust accordingly according to actual conditions.

Class of business	Service quality	The QoS grade
			The control signaling	EF (quickening to transmit)	7
Clock signal	BE (transmitting as possible)	0
			The voice control data	AF (guaranteeing to transmit)	3
Video conference	AF (guaranteeing to transmit)	4
			The voice and video phone	EF (quickening to transmit)	5

Table 3

DSLAM is linked into the metropolitan area network convergence router then, and like BRAS, transmission means is the IP transmission between the two, and DSLAM equipment need carry out the protocol conversion that ATM is transferred to the IP transmission.For guaranteed qos, DSLAM need support the priority scheduling between many PVC and the multi-VLAN.The message that HeNB produces need carry out two layers of VLAN sign according to class of business, in original ethernet frame, adds two fields, and TPID (Tag Control Information) is a tag protocol identifier malapropism section, and 2 bytes, value are 8100 (hex).When the EtherType in the frame (ethernet type) field value also was 8100, this frame transmitted label IEEE 802.1q/802.1p.Another is TCI (Tag Control Information) tag control information field, and (Canonical Format Indicator is CFI) with VLAN ID to comprise User Priority (User Priority), canonical Format Indicator.Concrete IEEE 802.1q frame format is as shown in Figure 6.

Be illustrated in figure 7 as the signaling process figure of HeNB multi-service passback, concrete steps are following:

Step 1, subscriber terminal equipment sends the request of access to Home eNodeB, and user terminal receives at Home eNodeB and inserts request back access to family base station;

Step 2, Home eNodeB sends register requirement to the femto gateway control module, and the femto gateway control module is set up the QoS information table;

Step 3, the femto gateway control module is sent the subscriber terminal equipment initialization information to core net;

Step 4, subscriber terminal equipment sends the request service to core net, and core net is carried out authentication to the qos parameter of request service;

Step 5, Home eNodeB is worn wide according to the corresponding qos parameter ranking score of subscriber terminal equipment requested service type, and core net is sent the RAB agreement and is replied to the femto gateway control module;

Step 6, femto gateway control module are carried out the negotiation of wireless access side qos parameter, and femto gateway control module and Home eNodeB are set up RAB;

Step 7, subscriber terminal equipment and Home eNodeB are set up RAB, and Home eNodeB is given the femto gateway module with final RAB qos parameter feedback information, and Home eNodeB upgrades the qos parameter information table;

Step 8, Home eNodeB sends to core net with wireless access side QoS negotiation result;

Step 9, Home eNodeB and femto gateway module send to subscriber terminal equipment with the information that core net receives service;

Step 10, Home eNodeB analysis connect the packet that subscriber terminal equipment sends, and the identification COS will be served to be mapped on other Permanent Virtual Path of different priorities according to priority orders and transmitted;

Step 11: the difference according to access network type lines up to be mapped to according to the priority VLAN with Permanent Virtual Path: the Permanent Virtual Path (PVC) of high priority is mapped to the Virtual Local Area Network of high priority, the Permanent Virtual Path (PVC) of low priority is mapped to the Virtual Local Area Network of low priority;

Step 12, the metropolitan area network convergence router is carried out Bandwidth Management, congestion management;

Step 13, the subscriber terminal equipment conversation end, core net is sent Iu interface release command message to the femto gateway module, the Iu interface resource between release of femto gateway module and the Home eNodeB;

Step 14; Discharging Home eNodeB is connected with RAB between the subscriber terminal equipment; Subscriber terminal equipment session QoS information in the Home eNodeB deletion QoS information table, Home eNodeB discharges the bandwidth resources of distributing, and Home eNodeB sends the message that the Iu interface has discharged to core net.

The ADSL access way ensures that backhaul transport QoS support method is as shown in Figure 3, and PON access way QoS support method is as shown in Figure 4, and LAN access way QoS support method is as shown in Figure 5.Under the ADSL access way, the moderm of family and base station is connected with DSLAM through twisted-pair feeder, and DSLAM supports the priority scheduling of PVC, VLAN.Under the PON access way, support the priority scheduling of PVC, VLAN by ONU, optical splitter, OLT.Under the LAN access way, accomplish the mapping between the local area network (LAN) by switch.

The present invention also can have other multiple expression modes; Under the situation that does not deviate from spirit of the present invention and essence thereof; Those of ordinary skill in the art are when making various corresponding changes and distortion according to the present invention, and these change and be out of shape the protection range that all should belong to the appended claim of the present invention accordingly.

Claims (1)

1. a QoS method that ensures Home eNodeB multi-service passback is characterized in that comprising the steps:

Step 1, subscriber terminal equipment sends the request of access to Home eNodeB, and user terminal receives at Home eNodeB and inserts request back access to family base station;

Step 2, Home eNodeB sends register requirement to the femto gateway control module, and the femto gateway control module is set up the QoS information table;

Step 3, the femto gateway control module is sent the subscriber terminal equipment initialization information to core net;

Step 4, subscriber terminal equipment sends the request service to core net, and core net is carried out authentication to the qos parameter of request service;

Step 5, Home eNodeB is worn wide according to the corresponding qos parameter ranking score of subscriber terminal equipment requested service type, and core net is sent the RAB agreement and is replied to the femto gateway control module;

Step 6, femto gateway control module are carried out the negotiation of wireless access side qos parameter, and femto gateway control module and Home eNodeB are set up RAB;

Step 7, subscriber terminal equipment and Home eNodeB are set up RAB, and Home eNodeB is given the femto gateway module with final RAB QoS feedback information, and Home eNodeB upgrades the QoS information table;

Step 8, Home eNodeB sends to core net with wireless access side QoS negotiation result;

Step 9, Home eNodeB and femto gateway module send to subscriber terminal equipment with the information that core net receives service;

Step 10, Home eNodeB analysis connect the packet that subscriber terminal equipment sends, and the identification COS will be served to be mapped on other Permanent Virtual Path of different priorities according to priority orders and transmitted;

Step 11: the difference according to access network type lines up to be mapped to according to the priority VLAN with Permanent Virtual Path;

Step 12, the metropolitan area network convergence router is carried out Bandwidth Management, congestion management;

Step 13, the subscriber terminal equipment conversation end, core net is sent Iu interface release command message to the femto gateway module, the Iu interface resource between release of femto gateway module and the Home eNodeB;

Step 14 discharges Home eNodeB and is connected with RAB between the subscriber terminal equipment, and Home eNodeB discharges the bandwidth resources of distribution.

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