CN1739310B

CN1739310B - Packet service system and method for controlling packet transmission

Info

Publication number: CN1739310B
Application number: CN200380108625XA
Authority: CN
Inventors: 李英大; 李承俊; 李昭暎
Original assignee: LG Electronics Inc
Current assignee: LG Electronics Inc
Priority date: 2003-01-11
Filing date: 2003-12-31
Publication date: 2011-01-12
Anticipated expiration: 2023-12-31
Also published as: CN1739310A; KR20040064347A; KR100956817B1; AU2003288783A1; WO2004064424A1; JP4354408B2; JP2006513630A; EP1582078A1

Abstract

A method for transfering real-time data from a data source to a mobile device, whereby the real-time data packets are transmitted according to a real-time communication protocol in a communication network having wired and wireless communication segments. The data communication method comprises the steps of establishing a communication bearer (S10) between the data source and the mobile device; determining packet loss for the wired communication segment (S13); producing control information to adjust the transmission size of the real-time data packets or the encoding mode of the real-time data, according to quality of service data, which is determined based on said control information.

Description

Be used to control the Packet Service system and method for transmitted in packets

Technical field

The present invention relates to a kind of communication system, and more specifically relate to a kind of Packet Service system and method that is used to control transmitted in packets.

Background technology

In the cellular telecommunication field, those skilled in the art use term 1G, 2G and 3G usually.These terms refer to the generation of employed cellular technology.1G refers to the first generation, and 2G refers to the second generation, and 3G refers to the third generation.1G is used in reference to analog telephone system, is known as AMPS (Advanced Mobile Phone Service) telephone system.2G is generally used for referring to the digital cellular system that generally uses in worldwide, and it comprises cdma cellular formula system, global system for mobile communications (GMS) and time division multiple access (TDMA).Compare with the 1G system, the 2G system can support more user in close quarters.3G is generally used for referring to the current digital cellular system of developing.Recently, propose the third generation (3G) cdma communication system, comprised cdma2000 and W-CAMD.The principle of these 3G communication systems is analogous to each other, and exists some significantly different simultaneously.The W-CDMA system is the third generation (3G) broadband, asynchronous, spread spectrum radio interface system, it adopts the CDMA technology that strengthens professional potentiality, to strengthen data capacity, for example, the access of internet and internal network, multimedia application, high speed business transaction and telemetry.The focus of W-CDMA is identical with the focus of other third generation system, all at network economy and wireless transmission design aspect, to overcome the limited restriction of effective wireless frequency spectrum.

According to the W-CDMA system standard of current proposition, the asynchronous operation respectively of each base station.In other words, between each independent base station, there is not the generalized time benchmark.In the W-CDMA system, each base station sends " synchronously " channel that comprises two subchannels respectively.

First subchannel in two subchannels, that is, main synchronizing channel is used the public main synchronous code in all base stations.Second subchannel in two subchannels, that is, secondary synchronization channel is used one group of circulation secondary synchronization sign indicating number.This secondary synchronization sign indicating number is not shared in other base station that is not positioned at same code-group.By searching for the main synchronous code of main synchronizing channel, then, utilize the timing information that obtains according to main synchronizing channel to handle the secondary synchronization channel, the travelling carriage in the W-CDMA can obtain the synchronizing channel of one or more base station.

International Telecommunication Union advocates 3G (third generation) standard based on the mobile communication system of international mobile technology 2000 (IMT2000) project at first.IMT2000 has imagined the single global standards of the wireless network that is counted as global 3G system.In the 3G system, next generation mobile communication system provides the business of enhancing, for example, and multimedia and video.Main 3G technology comprises universal mobile telecommunications system (UMTS) and CDMA2000.

UMTS provides the multimedia service of increase scope.UMTS quickens the fusion of communication, information technology, medium and content industry, thus the new business of providing and set up new income increase chance.UMTS will provide the low and data rate height that under static conditions, provide of cost to 2Mbps, have the big capacity mobile communication of global roaming ability and other senior ability.Third generation partnership projects (3GPP) has been set forth the technical specification that describes UMTS in detail.

UMTS is the next generation mobile communication system according to the exploitation of GSM (global system for mobile communications) European standard.Fig. 1 is the block diagram of the architecture of general UMTS.With reference to figure 1, UMTS comprises: subscriber equipment (UE) 100 (also being called as travelling carriage), universal mobile telecommunications network grounding wireless access network (below be abbreviated as UTRAN) 200 and core net 300.UTRAN 200 comprises a plurality of wireless network subsystem 10a to 10n.

For example, wireless network subsystem 10a comprises a wireless network controller (below be abbreviated as RNC) 12 and a plurality of Node B 11a and 11b.RNC 12 management node B11a and 11b.Wireless network subsystem 10b to 10n has same structure with the wireless network subsystem 10a that explains above respectively.Node B 11a/11b and 13a/13b receive the uplink data that subscriber equipment 100 sends, and perhaps down link data are sent to subscriber equipment 100.

RNC

12 and 14 distributes and managing

radio resources.RNC

12 and 14 plays access point, is used for Node B 11a/11b and 13a/13b are connected respectively to core net 200.In addition, Node B 11a/11b and 13a/13b also play access point, are used for subscriber equipment 100 is connected to UTRAN 200.

In above-mentioned structure, if subscriber equipment 100 is connected to network, the RNC that then manages this subscriber equipment 100 is Serving RNC (SRNC).In this case, SRNC plays a part subscriber equipment 100 is connected to core net 300.In addition, SRNC distributes the Radio Resource that is suitable for subscriber equipment is provided specific transactions.

Can with the delineation of activities that subscriber equipment 100 is provided by above-mentioned structure circuit-switched service and packet switching service.For example, common voice call service belongs to circuit-switched service, and belongs to packet switching service by the network browsing business of internet.

When system shown in Figure 1 support circuit switched service,

RNC

12 and 14 is connected to the mobile switching centre (below be abbreviated as MSC) 20 of core net 300.Then, MSC 20 is connected to GMSC (GMSC (gateway mobile switching center)) 30.30 couples of GMSC insert the audio call of extranets request or ask that audio call is inserted extranets and manage.When system shown in Figure 1 supported packet switching service,

RNC

12 and 14 was connected to service GPRS (GPRS) support node (below be abbreviated as SGSN) 40 of core net 300 and Gateway GPRS Support Node (below be abbreviated as GGSN) 50.

In this case, GGSN 50 plays gateway, is used for and internet or extranets interconnection.In addition, SGSN 40 is connected to GGSN 50, with the mobility of management user device 100 and carry out the packet switching function.Definition is used for the interface of mutual communication between the various unit that constitute system shown in Figure 1.

RNC

12 and 14 and core net 300 between definition Iu interface.The Iu interface that links to each other with unit in the packet switching district is defined as Iu-RS.The Iu interface that links to each other with unit in the circuit switching district is defined as Iu-CS.Set up UMTS shown in Figure 1, so that the various multimedia services of the quality of guaranteeing predetermine level to be provided.

Determine that the user is defined as quality of service (below be abbreviated as QoS) to the satisfied overall traffic quality of specific transactions.The QoS of user's impression depends on the various complicated factors to various service applications.

High transfer rate on the wireless or Wireline or speed can not satisfy the QoS of user's request.That is, comprise that the transmission capacity (perhaps speed) of all end-to-end drive access of Wireline and radiolink and the transmission rate on the radiolink all should guarantee at predetermine level.

On UMTS, define the notion of various bearer services, have the QoS of predetermine level to guarantee end-to-end specific transactions.Specifically, by the various network elements that will be provided with, end-to-end specific communication service is divided into several circuits (for example, Wireline, radiolink).At this, independent definition of data transport service on every circuit, and guarantee each the professional QoS that defines.Specifically, the bearer circuit (bearer) that is used for reliable transmission user data on the circuit between subscriber equipment and core net 300 is called as RAB circuit (below be abbreviated as RAB).Utilize radio bearer service and Iu bearer service to realize RAB.

Radio bearer service utilizes the Iu interface between subscriber equipment 100 and

RNC

12 and 14 to send data, and the Iu bearer service be used for

RNC

12 and 14 and core net 300 between carry out transfer of data.

For specific transactions is provided, should at first dispose RAB.In the process of configuration RAB, various parameters are set, to satisfy specific QoS.In circuit-switched service, MSC 20 starts, and with configuration RAB, and in packet switching service, SGSN 40 starts, with configuration RAB.

The 3GPP that standardization UMTS of future generation is set up (third generation pull together project) has stipulated the radio interface protocol architecture between subscriber equipment and UTRAN.Fig. 2 is according to the subscriber equipment of 3GPP wireless access network technical specification and the schematic diagram of the radio interface protocol architecture between the UTRAN.

With reference to figure 2, Radio interface protocols is set up, is reconfigured and the releasing wireless loading Circuit Service.This Radio interface protocols is provided with corresponding to layer 1 to 3 (L1 to L3), that is, and and the function of physical layer, link layer and network layer.

L1, that is, physical layer is to MAC layer and the more high-rise information transfer service that provides.L1 provides independent transfer channel to media access control sublayer.The characteristic of transfer channel is how to transmit data by wave point.L2 comprises medium access control (MAC) sublayer, Radio Link control (RLC) sublayer, packet data convergence protocol sublayer and broadcasting/multiple access communication sublayer.

Media access control sublayer provides independent logic channel to RLC, and the characteristic of a logic channel is the information type that transmits.Media access control sublayer provides data transport services by logic channel.This channel is organized as two classes, for example, is used for control plane information control channel that transmits and the Traffic Channel that is used for the user plane information transmission.

Utilize media access control sublayer, the business of redistributing of Radio Resource and MAC parameter provide professional to more high-rise.Change MAC parameter and the RRC request of distributing radio resource again by carrying out, redistribute business.Media access control sublayer itself carries out resource allocation.

In addition, the MAC layer comprises various entities, for example, and MAC-b, MAC-d and MAC-s/sh.The authentic data transport service is supported in the RLC sublayer.The RLC sublayer will be more high-rise protocol Data Unit (below be abbreviated as PDU) be split as RLC Service Data Unit (below be abbreviated as SDU), perhaps RLC SDU is re-assemblied and is more high-rise PDU.

Broadcasting/multiple access communication control (below be abbreviated as BMC) sublayer provides broadcasting/multiple access communication transport service on user plane.The basic function of BMC sublayer is storing cell broadcast message (CB), the Radio Resource of asking to be used for business amount monitor and cell broadcaste service, dispatches BMC message and BMC message is sent to subscriber equipment.In addition, the PDCP sublayer is used for transmission network PDU.

L3 comprises each sublayer of control plane.Radio Resource control (below be abbreviated as RRC) layer is the minimum sublayer in each sublayer of L3, and it is provided with following function.

Rrc layer is responsible for setting up, set up, keep and discharges UE (subscriber equipment) being connected with RRC between the UTRAN.The radio bearer (below be abbreviated as RB) of user plane also be responsible for to be set up, reconfigured and discharge to rrc layer.Rrc layer also is responsible for distributing, reconfigure and discharging the Radio Resource that is used for the RRC connection.

Adopt the 3GPP of above-mentioned radio interface protocol architecture to attempt the standardized technique standard of exploitation broadcasting/multiple access communication business (below be abbreviated as MBMS).MBMS attempts to overcome previous cell broadcaste service (CBS) and does not support the limitation of multiple access communication function, the restriction of supported media data etc.

At this, MBMS utilizes unidirectional point simultaneously the multi-medium data of audio frequency, image, video etc. to be sent to a large amount of UE to the multiple spot bearer service.MBMS is divided into broadcast mode and multiple access communication pattern.

Under the broadcast mode of MBMS, multi-medium data is sent to all UE in the effective broadcast domain of broadcasting service.

Under the multiple access communication pattern of MBMS, multi-medium data is sent to particular UE group in the professional effectively multiple access communication territory of multiple access communication.In order to provide MBMS under the multiple access communication pattern, UE should subscribe in the multiple access communication subscription group.Then, after finishing reservation, UE starts to receive specific multi-medium data.

By configuration RAB, set up the information that requires of MBMS.That is,, should between UE and core net, set up the RAB of the MBMS of the QoS that guarantees specific grade for MBMS.

When sending real time data, MBMS uses real time transport protocol (below be abbreviated as RTP).Real time data is the packet type that sends in real time, therefore, below it is called real-time grouping.

RTP is suitable for sending the multi-medium data with real-time Transmission attribute by multiple-access communication network or single-point radio network, for example, and the agreement of voice data, video data etc.RTP itself can not guarantee the QoS such as the real time business of speech business, video traffic etc.Therefore, MBMS also uses RTP Control Protocol (below be abbreviated as RTCP).

When carrying out Wireline communication, utilize system shown in Figure 2, RTP and RTCP are difficult to provide professional by Wireline and radiolink.That is, radiolink is directly used RTP and the following problem of RTCP generation.

At first, the RTCP grouping that is used for RTP status of packets information is sent to data source can not differentiate the packet loss that takes place on packet loss that takes place on the Wireline and radiolink.RTCP only divides into groups to check the packet loss amount that produces because of the conflict on the Wireline, so that the data flow on the monitoring network.Data source can not determine that this packet loss is to occur on the radiolink, still occurs on the Wireline.

On the UMTS network, the packet loss amount on the radiolink is usually greater than the packet loss amount on the Wireline.Therefore, according to RTCP grouping, to transmitting in the process that follow-up RTP grouping handles, this data source makes a mistake probably.

For example, according to the state information that is included in the RTCP grouping, the present situation of data source monitoring network, then, according to this monitoring result, the size and the coding method of RTCP that change will send grouping are to reduce losing of the follow-up grouping that sends later.

On the Wireline on the reason of lost packets and the radiolink reason of lost packets different.Therefore, should be according to the corresponding reason of Wireline and radiolink, the size and the coding method of the RTP grouping that appropriate change will send.In the prior art, data source has no idea packet loss reason on the Wireline and the packet loss reason on the radiolink are distinguished.Prior art system can not make a mistake during the RTP transmitted in packets and wired network and/or wireless network are effectively carried out transmission process and control in order to reduce.

In addition, a plurality of if the UE of reception such as MBMS, RTCP grouping has, then each RTCP grouping is sent to data source from corresponding UE, therefore, when determining the bandwidth that transmission RTP divides into groups and the RTCP grouping needs respectively, produced problem.

Specifically, because RTP and RTCP are the agreements that only is suitable for Wireline, so have a UE (perhaps main frame) in the terminal of Wireline.Therefore, if use the RTP and the RTCP of prior art such as the point-to-multipoint communication of MBMS, and do not make an amendment, then the problem of Chan Shenging is, the required bandwidth of designated packet transmission has reduced resource utilization.

Summary of the invention

According to an aspect of the present invention, provide a kind of with the process of communication in real time data is sent to the method for mobile device from data source, this communication network has wire communication line and wireless communication line, this method comprises determines that the packet that will receive has real-time property or has the non real-time attribute, if and the described packet that will receive has real-time property and use real-time communication protocol, then: configuration is used for receiving from described data source by described wire communication line the relay function module of described real time data; Receive described real time data by described wire communication line from described data source; If receive described real time data and disposed described relay function module, the packet loss of then determining described wire communication line is used to regulate the transmission requirement of described real time data to produce control information; If produced described control information, then this control information is sent to described data source; And the described real time data that is received from described data source according to described control information handle sends to described mobile device.Wherein, if the described packet that will receive has the non real-time attribute, then do not use described relay function module.

According to a further aspect in the invention, provide a kind of data communications method, comprising: between core net and mobile device, set up the RAB circuit by the communication network that comprises wired communications portion and wireless communication section; Determine to treat that the grouping from core net receives has real-time property or has the non real-time attribute; And if described treating have real-time property from the grouping that core net receives, then dispose the relay function module, be used to produce control information; And when described control information points out that real-time communication protocol will be used for the communication of this grouping, send described grouping to described mobile device.Wherein, if described treating has the non real-time attribute from the grouping that core net receives, then do not use described relay function module.

Description of drawings

Included accompanying drawing helps further to understand the present invention, and accompanying drawing introduces present patent application, and as the part of present patent application, it illustrates one or more embodiment of the present invention, and it with illustrate that one is used from the explanation principle of the invention.

Fig. 1 is the block diagram of general UMTS architecture;

Fig. 2 is according to the subscriber equipment of 3GPP wireless access network technical specification and the schematic diagram of the radio interface protocol architecture between the UTRAN;

Fig. 3 is used to illustrate the schematic diagram of the UMTS of real-time/non real-time stream of packets according to an embodiment of the invention;

Fig. 4 is used to illustrate the schematic diagram of the protocol architecture of real-time/non real-time stream of packets according to an embodiment of the invention;

Fig. 5 is the flow chart that is used to handle real-time/non real-time grouping process according to one embodiment of the invention;

Fig. 6 illustrates the block diagram of travelling carriage according to the preferred embodiment of the invention.

Now, will describe the preferred embodiments of the present invention in detail, accompanying drawing illustrates the example of the preferred embodiment.In institute's drawings attached,, utilize same Reference numeral to represent same or similar part in any possible place.

Embodiment

In order to help to illustrate the present invention, channel, message and fixing or the variable identifier of utilizing certain typical parameter name, value, length and other attribute specification between travelling carriage and base station, to communicate by letter.Should be noted that this parameter name only is used to say something, and can utilize the same or similar function of other title explanation.

With reference to figure 3, comprise according to Packet Service of the present invention system: data source, core net, UTRAN and subscriber equipment (UE).Data source is the starting point of Wireline, and subscriber equipment is the end point of radiolink.

UTRAN is the end point of Wireline and the starting point of radiolink.Subscriber equipment is by wireless terminal, and UTRAN utilizes Packet Service that data source provides to guarantee the wireless access network of subscriber equipment wireless access UTRAN.

Data source and subscriber equipment are equipped with the protocol layer that is used for real-time packet service.For example, data source contains RPT layer and RTCP layer downwards, and also contains UDP/IP (user datagram protocol/the Internet protocol) layer below the RTP/RTCP layer.Subscriber equipment also contains the real-time protocol (RTP) layer of data source.In addition, data source and subscriber equipment contain the protocol layer of non real-time Packet Service.

In one embodiment, the invention is characterized in that UTRAN comprises RTP and the RTCP layer that is positioned on the UDP/IP, to support real-time packet service.UTRAN also further supports the non real-time Packet Service.UTRAN plays transparent transmission non real-time grouping.

The RTP layer relaying of UTRAN sends to the real time data of UE from data source, and the transmission course of RTCP layer control real time data.UTRAN further comprises UDP/IP (user datagram protocol/the Internet protocol) layer that is positioned under the RTP/RTCP layer.Between data source and UTRAN, perhaps the real time data of transmission/reception is the RTP/UDP/IP grouping between UE and UTRAN.Corresponding RTP/UDP/IP layer extracts the RTP/UDP/IP grouping of receiving, then, it is transformed to RTP or RTCP grouping.

In the superincumbent explanation, explained that UTRAN comprises the RTP/RTCP layer that is positioned on the UDP/IP layer of operating, the constructional variant of UTRAN can be reduced to minimum like this.Specifically, UTRAN of the present invention comprises the functional entity of the operation of the operation of carrying out the RTP layer and RTCP layer.For example, according to an embodiment, installation function entity relay function module on RNC is as the unit of UTRAN.The relay function module differentiates Wireline and radiolink mutually.Fig. 3 illustrates the example of relay function module used according to the invention, and Fig. 4 illustrates the protocol architecture that is used to realize the requirement of relay function module.

The following describes relay function module shown in Figure 3.At first, for the real-time grouping such as the RTP grouping, a plurality of relay function module 80a to 80n carry out the RTP/RTCP operation independent respectively on Wireline and radiolink.In this case, radiolink is between UTRAN 200 and UE 100, and Wireline is between UTRAN 200 and data source 70.

Secondly, as MBMS, in system, use relay function module 80a to 80n to be used to send RTP and RTCP grouping.In this system, relay function module 80a to 80n produces the RTCP grouping of the state information that is used to carry the radiolink of receiving, then, RTP grouping is sent to the UE 100 that is positioned at wireless portion, be used to carry the RTCP grouping of the radiolink state information that UE 100 sends with processing.

Once more, relay function module 80a to 80b is installed on the UTRAN 200, is used to control the transmitted in packets of radiolink.Relay function module 80a to 80b is connected to the RNC 12a to 12n of UTRAN 200.In the process of this system of realization, relay function module 80a to 80n can be respectively installed on the RNC 12a to 12n, perhaps, is installed on the UTRAN 200, so that open with RNC 12a to 12n branch.

In case in order moving relay function module 80a to 80n to be connected respectively to RNC 12a to 12n, then to utilize " tunnel " to realize this connection itself.That is, utilize the tunnel, relay function module 80a to 80n is connected respectively to RNC 12a to 12n, so that current control and processing controls are carried out in the grouping on Wireline/radiolink.

Therefore, if relay function module 80a to 80b as the unit of UTRAN 200, then as shown in Figure 4, defines the protocol layer of being carried out by relay function module 80a to 80n in order effectively to carry out the RTCP operation respectively on each circuit.

RTP/RTCP corresponding to each function of relay function module 80a to 80n, User Datagram Protoco (UDP) (UDP) layer and IP(Internet Protocol) (IP) layer further is set on the above-mentioned WAP (wireless access protocol) of UTRAN 200 and network access protocol.

To be example with the situation that relay function module 80a to 80n is installed on the RNC of UTRAN 200 12a to 12n below, the operation of relay function module 80a to 80n will be described.

Receive data source 70 as RTP grouping send have this packet of real-time property the time, relay function module 80a to 80n produces the control grouping of the state information of carrying the Wireline of receiving.Then, relay function module 80a to the 80n control grouping that will produce offers data source 70.

In one embodiment, the control grouping that data source 70 sends relay function module 80a to 80n is regarded respectively what the end point at Wireline and/or radiolink sent as, then, determine respectively (for example to send packet, RTP divides into groups) and the required bandwidth of control grouping (for example, RTCP grouping).

Relay function module 80a to 80n is by the packet of downlink radio channel to a plurality of UE broadcasting and/or multiple access communication real-time property, then, the control grouping that the UE of packet produces is received in reception, to obtain the receiving status information of current wireless circuit.

The receiving status information of the radiolink that utilization is obtained according to control grouping, according to packet, relay function module 80a to 80n or RNC 12a to 12n control transmitted in packets.If the RNC 12a to 12n of UTRAN 200 provides the control information of the packet of data source transmission, then relay function module 80a to 80n offers data source with the receiving status information of Wireline.

Therefore, irrelevant to a main body (data source) of controlling transmitted in packets according to the receiving status information of Wireline with other main body (RNC) of controlling transmitted in packets according to the receiving status information of radiolink.

For another example, the receiving status information of the radiolink that each of relay function module 80a to 80n of the present invention obtains the control grouping according to UE 100 respectively adds to being sent in the corresponding control grouping of data source 70, then, sends it.

In one embodiment, the grouping that sends to UE 100 from data source 70 is the packet of non-real-time property and the packet of real-time property.Yet relay function module 80a to 80n supports and controls the transmitted in packets of the grouped data with real-time property of dividing into groups such as RTP.

Therefore, the attribute of the packet that core net 300 specified data sources 70 send then, if the attribute of determined packet is real-time, then utilizes dedicated indicator operation relay function module 80a to 80n.Therefore, in one embodiment, the present invention uses this designator, makes to use to support the relay function module 80a to 80n that intrasystem real-time transmitted in packets is controlled is not interrupted transmitting the non real-time grouping this system's support grouping in real time and non real-time grouping.In another embodiment, the present invention uses designator, and making is not needing control grouping, and when particularly not needing the RTCP grouping, uses relay function module 80a to 80n not interrupt transmitting real-time grouping.

The attribute of current data that core net 300 specified data sources 70 will send grouping is real-time or non real-time.When being established to the transmitted in packets RAB circuit of UE, the Wireline of the attribute of core net 300 notice UTRAN 200 determined packets stops.

Utilize protocol architecture shown in Figure 4 to realize, and this Packet Service system can be applied to send the business of real time data according to Packet Service of the present invention system, for example, MBMS.Can be applied to support simultaneously the business of real time data and non-real-time data according to Packet Service of the present invention system.With reference to figure 4, RTP is fit to utilize multiple-access communication network or multiple-access communication network to come the user is provided the agreement of the multi-medium data (video and/or audio frequency) with real-time property, wherein the packet format of RTP definition comprises the RTP medium type field that is used to represent the RTP medium type, but also comprises the payload that contains the user profile that receives basically.RTP medium type field is used to notify the type of payload.

RTCP is the agreement that is used to monitor the transfer of data on the multiple-access communication network and is used to carry out minimum control and recognition function.For example, the major function of RTCP is to produce the state information that is used for data are distributed to the network element that belongs to this multiple-access communication network.Some function of RTCP is relevant with congested control with the current control of other agreement.For example, the state information by RTCP feedback contains the information (for example, the information of the time delay that RTP packet loss amount, transmitted in packets during produce) of RTP grouping from the originating location that sends this RTP grouping to the transmission course of the destination that receives this RTP grouping.The RTCP grouping can be carried receiving status information.

In case the RTCP that the RTP that receives is divided into groups divides into groups to feed back to originating location from the destination, originating location just utilizes and is included in the interior state information of RTCP grouping, size of data and/or the data volume and/or the data-encoding scheme of definite RTP grouping that will send.

For example, in one embodiment of the invention, the RTCP grouping that UTRAN will carry the RTP status of packets information of receiving is sent to data source, and then, subscriber equipment (UE) sends to UTRAN with the RTCP grouping.The RTCP grouping is that the receiver side that contains state information, is used to RTCP is divided into groups carries out the control grouping that packet (RTP grouping) transmission is controlled.

Utilization is included in the interior state information of RTCP grouping that receives from UE, definite size of data and/or the data volume and/or the data-encoding scheme that will send to the RTP grouping of UE of UTRAN.Utilization is included in the interior state information of RTCP grouping that receives from UTRAN, definite size of data and/or the data volume and/or the data-encoding scheme that will send to the RTP grouping of UTRAN of data source.

In one embodiment of the invention, designator is used to indicate whether use the relay function module in the UTRAN.The core net of the attribute of the grouping that is produced by the Monitoring Data source produces this designator.When setting up the RAB circuit of the Packet Service that data source starts, core net produces this designator.This indicator table is shown the attribute of the grouping that data source produces, and this designator is sent to UTRAN.

In one embodiment, UTRAN comprises RTP layer and the RTCP layer that is positioned on the UEP/IP layer, is used to transmit real-time grouping.The preferred designator operation relay function module that receives from core net of utilizing.That is, utilize this designator, core net is to the executive control operation of relaying functional module.In other words, the designator that produces of core net is the order that is used to start/close the operation of relay function module.

With reference to figure 3, data source 70 makes it possible to transmit the grouping of real-time property or non real-time attribute.In this case, data source 70 provides server or the terminal as the exclusive data of packet format.Core net 300 is determined the attribute of the grouping that will send from data source 70, and then, notice UTRAN 200 is determined will to send the termination of Wireline of the attribute of grouping.

When foundation was used for the RAB circuit of the transmitted in packets between core net 300 and the UE 100, the SGSN 40a to 40n of core net 300 notified the UTRAN grouping that 70 data sources 70 will send to have the non real-time attribute or have real-time property respectively.The attribute of the grouping that designator notification data source 70 of SGSN 40a to 40n use of core net 300 will send.In one embodiment of the invention, this designator is not limited to notify the attribute of current group.The SGSN 40a to 40n of core net 300 utilizes this designator notice whether to use RTP/RTCP and/or is included in relay function module 80a to 80n on the UTRAN 200, and the attribute of the notice grouping that will send.If the attribute of the grouping that this designator notice will send, the packet attributes of pointing out according to the designator of receiving then, UTRAN 200 determines whether to use relay function module 80a to 80n.

In addition, when whether designator notice UTRAN used relay function module 80a to 80n, for example, according to the information that the designator of receiving is pointed out, UTRAN 200 can check current grouping of receiving to have real-time property still to have the non real-time attribute.

In one embodiment of the invention, UTRAN 200 comprises the Wireline equipment that is used for receiving from data source 70 grouping.Receiving status information support according to Wireline is controlled the transmitted in packets on the Wireline.Radiolink equipment sends to UE 100 with grouping, according to the receiving status information on the radiolink transmitted in packets on the radiolink is controlled.

UTRAN 200 of the present invention preferably includes relay function module 80a to 80n.In one embodiment, relay function module 80a to 80n is installed in respectively on the RNC 12a to 12n, as shown in Figure 3.Therefore, when setting up the RAB circuit, according to the order from the designator of the corresponding reception of the SGSN 40a to 40n of core net 300, UTRAN 200 starts/closes the operation of relay function module 80a to 80n.

In case sent grouping from data source 70, GGSN 50a to 50n just be used separately as be used for this data source under the gateway of network interconnection, respective packets is sent to SGSN 40a to 40n.Each of SGSN 40a to 40n determines to send to the attribute of the grouping of UE 100, then, will be used to notify the designator of the attribute of respective packets to be sent to UTRAN 200.If the real-time property of determined grouping is the same reliable with the attribute of RTP grouping, then, be included in the designator receiving status information notification data source 70 that RTCP will divide into groups in real time by the receiving status information that makes real-time grouping by core net 300.

In one embodiment, according to the designator that core net 300 sends, UTRAN 200 determines the attribute of grouping and/or whether uses relay function module 80a to 80n.This designator can also comprise whether using relay function module 80a to 80n to send.That is, if the non real-time Packet Service is provided, then relay function module 80a to 80n does not work, and should divide into groups from the transparent UE that sends to of data source.Each of SGSN 40a to 40n will be divided into groups in real time or non real-time grouping is sent to the RNC 12a to 12n of UTRAN 200.If send to the grouping of UE100 is real-time, and when using RTCP, the relay function module 80a to 80n of UTRAN 200 works.If non real-time, then they are not worked.Even do not use RTCP if the grouping that will send is real-time, then relay function module 80a to 80n does not work.Work from the designator control relay function module 80a to 80n of the corresponding reception of SGSN 40a to 40n.

For example, with RTP grouping when data source 70 sends to UE 100 as the final destination, during carrying out transmitted in packets by UTRAN 200, at the middle part of Wireline and radiolink, data source 70 should be able to be monitored the network state as the amount lost of RTP grouping.In one embodiment, relay function module 80a to the 80n RTCP grouping that will contain the receiving status information of Wireline feeds back to data source 70.

By radiolink, be provided with respectively relay function module 80a to 80n RNC 12a to 12n will send to UE from the grouping of the corresponding reception of SGSN 40a to 40n.In this case, if this business is the multiple access communication business, then RNC 12a to 12n sends to grouping a plurality of UE that are positioned at its business domains.If from the grouping of the corresponding reception of SGSN 40a to 40n is real-time grouping, relay function module 80a to the 80n UE that should divide into groups to send in real time then.

Relay function module 80a to 80n will contain real-time grouping receiving status information control grouping (for example, the RTCP grouping) feeds back to data source 70, then, respectively from each UE receive the receiving status information that contains radiolink control grouping (for example, RTCP grouping).

In one embodiment, the control status of packets information that receives from UE is included in respectively and will feeds back to respectively controlling in corresponding that divides into groups of data source 70.According to the control grouping that receives from UE, the relay function module 80a to 80n that is installed in respectively on the RNC 12a to 12n delivers to data source 70 with the receiving status information of UE.

In another embodiment, each the control grouping that feeds back to data source 70 does not all preferably contain the receiving status information of radiolink, therefore, RNC 12a to 12n handles the control grouping (RTCP that receives from UE divides into groups) of the receiving status information that contains radiolink respectively.According to the control grouping that receives from UE, RNC 12a to 12n determines to send to size and/or the quantity and/or the coding method of the grouping on the radiolink respectively.

In aforesaid explanation, explained that the relay function module 80a to 80n that is used to distinguish the real-time stream of packets/Wireline of non real-time stream of packets and the state of radiolink is mounted respectively the 12a to 12n at RNC.Yet relay function module 80a to 80n also can be independent of RNC 12a to 12n and be installed in the UTRAN 200.In addition, also can realize RNC 12a to 12n, comprise the function of the function of relay function module 80a to 80n with execution.In exemplary embodiments, relay function module 80a to 80n is installed in respectively on the RNC 12a to 12n.The following describes the example that designator is sent to UTRAN 200 of the present invention.

When the order according to designator connects or disconnects relay function module 80a to 80n, and when data source 70 sends the grouping of certain attributes, the designator of the attribute of the grouping that core net 300 will indicate to send is sent to UTRAN 200.This designator points out that grouping has real-time property and still has the non real-time attribute, and whether uses the control grouping, for example, and the RTCP grouping.

Therefore, if receiving real-time grouping from core net behind the notified designator that carries out the transmitted in packets of real-time property and use RTCP to divide into groups, then relay function module 80a to 80n is with the real-time status of packets information notification data source 70 on the Wireline.Yet if from the core net 300 notified designators that carry out the transmitted in packets of non real-time attribute, relay function module 80a to 80n does not relate to the non real-time transmitted in packets.

From data source 70 transmission non real-time packet attributes the time, the order of designator disconnects relay function module 80a to 80n.If the attribute of the grouping that sends is a non real-time, if although perhaps the grouping that will send is real-time grouping, do not ask the state information of Wireline, then core net 300 is sent to UTRAN 200 with designator.That is,, do not use RTCP for real-time transmitted in packets.Therefore, request receives a designator of the transmitted in packets that is used to notify the non real-time attribute from core net 300, perhaps is used to notify another designator of the state information of Wireline.Relay function module 80a to 80n is with the non real-time transmitted in packets or transmitted in packets is irrelevant in real time, therefore, just disconnects relay function module 80a to 80n.

When data source 70 sends the RTP grouping, support MBMS, and the order of the designator that sends according to core net 300 of relay function module 80a to 80n determines whether to use the RTCP grouping.If use the RTCP grouping, then core net 300 is sent to UTRAN 200 with designator.

Therefore, after receiving designator from core net, data source 70 is delivered in the RTCP grouping that relay function module 80a to 80b will contain the state information of Wireline, and other of the grouping of relay function module 80a to 80b and real-time property do not use the RTCP transmission packets irrelevant.Therefore, designator contains the information whether notice uses RTCP.

With reference to figure 5, data source 70 attempts to transmit the real-time grouping or the non real-time grouping of the real-time grouping of the state information of asking real-time transmitted in packets and the state information that can not ask real-time transmitted in packets.

In case asked a specific cluster transmission from data source 70, core net 30 is just set up RAB circuit (S10) with at least one terminal 100.In the following description, suppose and set up MBMS RAB circuit so that MBMS is delivered to corresponding terminal.

When setting up MBMS RAB circuit, core net 300 is determined the attribute of the grouped data that will send from data source 70, then, and with the attribute notice UTRAN 200 that determines.The grouping that SGSN 40a to 40n notice UTRAN 70 data sources 70 of core net 300 send has real-time property and still has the non real-time attribute.Whether SGSN 40 notice UTRAN 200 utilize RTCP transmission grouping in real time, and for this reason, SGSN 40 uses designator.

In one embodiment, a designator points out that the grouping that will send has the non real-time attribute, still has real-time property.This designator is the packet attributes designator.For example, be used to notify whether utilize RTCP transmission in real time another designator of grouping be called as and use RTCP designator/do not use RTCP designator.

Therefore, according to the designator of receiving, UTRAN 200 determines whether to use relay function module 80a to 80n (S11).After this, the grouping of data source 70 is sent to the RNC 12a to 12n (S 12) of UTRAN 200.In the process of setting up the RAB circuit, the RNC 12a to 12n of UTRAN200 has utilized from the designator of core net 300 receptions to judge whether use relay function module 80a to 80n.Therefore, for the grouping that will receive, relay function module 80a to 80n is with following dual mode work.

At first, if the grouping that receives is to use the RTP grouping of RTCP, then each relay function module 80a to 80n adds the state information (for example, the amount lost of RTP grouping) that the RTP that receives is grouped on the radiolink to the RTCP grouping, then, make it feed back to data source 70 (S 13).In this case, RNC 12a to 12n will deliver to relay function module 80a to 80n respectively by the RTP grouping that tunnel or node-to-node communication receive.

RNC 12a to 12n or relay function module 80a to 80n send to a plurality of terminals 100 (S14) on the radiolink with the RTP that receives grouping.In this case, by downlink radio channel, broadcasting or multiple access communication send to the RTP grouping of terminal 100.Simultaneously, according to the state information that is included in the RTCP grouping, the data source 70 of receiving the RTCP grouping is determined the size of data of the RTP grouping that will send, suitably coding method etc. (S15).

In one embodiment, according to the state information that is included in the RTCP grouping, data source 70 changes the routing information in the RTP grouping that will send after being included in, and flows into each unit (S15) that frequently clash, core net 300 and/or UTRAN 200 to prevent the RTP grouping.

In addition, data source 70 will regard as respectively from the RTCP grouping that relaying functional module 80a to 80n transmits each Wireline/radiolink terminating point will be transmitted one by one, then, correctly respectively determine transmission RTP grouping and the RTCP required bandwidth (S15) of dividing into groups.

Simultaneously, setting up in the process of RAB circuit with core net 300, terminal 100 has been discerned the attribute of the grouping that will receive.Therefore, the corresponding terminal 100 of receiving the RTP grouping produces the RTCP grouping that comprises such as the state information in the RTP packet loss amount between the radiolink transmission period, propagation delay time etc., then, it is fed back to RNC 12a to 12n or relay function module 80a to 80n (S16).

The receiving status information that the RTCP grouping that sends according to each terminal 100 of utilizing on the radiolink obtains, RNC12a to 12n or relay function module 80a to 80n are to sending to RTP grouping the carrying out transmission process (S18) of each terminal 100.

In one embodiment, RNC 12a to 12n or relay function module 80a to 80n also will feed back to data source 70 from the RTCP grouping that each terminal 100 receives.Then, the size of data of the RTP grouping that after determining, will send, suitably during coding method etc., data source is further considered from the RTCP of each terminal 100 feedbacks and is divided into groups.

In the grouping that will receive is not use the RTP of RTCP grouping, or non real-time when grouping, that is, if needn't use relay function module 80 time, then the grouping that will receive of RNC 12a to 12n sends to a plurality of terminals 100 (S18) on the radiolink by core net 300.If do not use RTCP itself, receive that then the terminal 100 of RTP grouping is not carried out the action that produces the RTCP grouping.

Therefore, in specification of the present invention,, comprise that the UTRAN of relay function module sends to data source with the RTCP grouping, with preferred execution RTP and RTCP operation by stopping Wireline.Specifically, at UTRAN, the RTCP grouping that each subscriber equipment is sent is handled respectively, so that be not sent to data source.Therefore, the Radio Resource of avoiding waste, and can accurately grasp the packet count of losing because of the conflict on the internet.Therefore, can count the packet count of losing, thus can suitably control, so that Packet Service to be provided.

In the present invention, owing to produce the RTCP grouping that is used to control the RTP grouping respectively as the UTRAN of the end points of Wireline with as the subscriber equipment of the end points of radiolink, so distinguish the state of Wireline and radiolink easily.Therefore, configuration the present invention, with corresponding reason according to Wireline and radiolink, the grouping size and the coding method of the RTP grouping that change will send.

For example, the size and the coding method of the RTP grouping that the data source appropriate change will send are lost the RTP grouping that will send with minimizing, therefore, can accurately regulate the data conveying capacity.In addition, can also accurately grasp the state of Wireline, with effective control Wireline.

In the present invention, because UTRAN management and control radiolink, so radiolink itself can be regulated data conveying capacity and coding method, to adapt to the state of current wireless circuit.In the present invention, the state of Wireline and radiolink is differentiated mutually, therefore, can judge accurately that losing of real time data grouping is to occur on the Wireline, still occur on the radiolink, but also can accurately regulate respective packets propagation delay time on Wireline and the radiolink.

In the present invention, can accurately determine the bandwidth of RTP and RTCP, and by grasping the state of Wireline, can the whole network of more effective control.Modification is according to system of the present invention, to adapt to MBMS.MBMS uses RTP and RTCP to send real time data.Therefore, for MBMS, when system divided into groups in real time to the subscriber equipment broadcasting/multiple access communication on the radiolink, the present invention was more effective.

At last, in the present invention, when UTRAN uses the relay function module, also be used to operate the operating efficiency that the designator of controlling the relay function module improves the relay function module.Therefore, the present invention is more suitable for satisfying the Packet Service of specific QoS.

Fig. 6 illustrates the block diagram of mobile radio station according to the preferred embodiment of the invention.

With reference to figure 6, mobile radio station 500 comprises: processor (perhaps digital signal processor) 510, RF module 535, power management module 505, antenna 540, battery 555, display 515, keypad 520, memory 530, SIM card 525 (optionally), loud speaker 545 and microphone 550.

For example, by pressing the button on the keypad 520, perhaps use the vice activation of microphone 550, the user can import the command information such as telephone number.Microprocessor 510 receives and handles this command information, to carry out suitable function, for example, dials phone number.Can be from subscriber identification module (SIM) card 525 or memory module 530 search operaqtion data, to carry out this function.In addition, user's reference for convenience, processor 510 can make this instruction and operation information be presented on the display 515.

Processor 510 sends to RF part 535 with command information, to start communication, for example, sends the wireless signal that comprises voice communication data.RF part 535 comprises the Receiver And Transmitter that is used to receive and send wireless signal.Antenna 540 promotes to send and receive wireless signal.After receiving wireless signal, RF module 535 can be transmitted this signal, and it can be transformed to fundamental frequency, so that handled by processor 510.For example, the signal transformation of handling is audio-frequency information or readable information by loud speaker 545 outputs.

Those skilled in the art understand, for example, use separately or use digital signal processor (DSP) or other data processing device of suitably programming with the external support logic combination of circuits, can easily realize the preferred embodiments of the present invention.

The manufacturing equipment or goods, firmware, hardware or their combination that utilize method, adopt standard program technology and/or engineering to produce software can realize the preferred embodiment.Term " goods " at hardware logic electric circuit (for example refers to as used herein, integrated circuit (IC) chip, field programmable gate array (FPGA), application-specific integrated circuit (ASIC) (ASIC) etc.) or computer-readable medium is (for example, magnetic storage medium (for example, hard disk drive, floppy disk, tape etc.), optical memory (CD-ROM, CD etc.), volatibility and nonvolatile semiconductor memory member (for example, EEPROM, ROM, PROM, RAM, DRAM, SRAM, firmware, programmable logic device etc.)) go up code or the logical circuit realized.Processor can access and the object computer computer-readable recording medium on code.

Can also be by transmission medium or by the code of network from file server access realization preferred embodiment.In this case, realize that the goods of this code can comprise transmission medium, for example, Network transmission line, wireless transmission medium, signal, radio wave, infrared signal etc. by spatial transmission.Certainly, those skilled in the art understand, without departing from the present invention, can carry out many modifications to this configuration, and these goods can comprise any information bearing medium known in the art.

Commercial Application

Those skilled in the art understand, can carry out various modifications and changes to the present invention. Therefore, belong in modifications and variations of the present invention in the situation of claims and equivalent described scope thereof, the present invention attempts to cover these modifications and changes of the present invention.

Claims

One kind with the process of communication in real time data is sent to the method for mobile device from data source, this communication network has wire communication line and wireless communication line, this method comprises:

Determine that the packet that will receive has real-time property or has the non real-time attribute,

Wherein, if the described packet that will receive has real-time property and uses real-time communication protocol, then:

Configuration is used for receiving from described data source by described wire communication line the relay function module of described real time data;

Receive described real time data by described wire communication line from described data source;

If receive described real time data and disposed described relay function module, the packet loss of then determining described wire communication line is used to regulate the transmission requirement of described real time data to produce control information;

If produced described control information, then this control information is sent to described data source; And

According to described control information the described real time data that is received from described data source is sent to described mobile device,

Wherein, if the described packet that will receive has the non real-time attribute, then do not use described relay function module.
2. data communications method comprises:

Between core net and mobile device, set up the RAB circuit by the communication network that comprises wired communications portion and wireless communication section;

Determine to treat that the grouping from core net receives has real-time property or has the non real-time attribute,

Wherein,, then dispose the relay function module, be used to produce control information if described treating has real-time property from the grouping that core net receives; And when described control information points out that real-time communication protocol will be used for the communication of this grouping, send described grouping to described mobile device;

Wherein, if described treating has the non real-time attribute from the grouping that core net receives, then do not use described relay function module.
3. method as claimed in claim 2 wherein, when being provided with described RAB circuit at described core net and mobile device, is enabled described relay function module.
4. method as claimed in claim 3, wherein, described RAB circuit comprises the communication between described mobile device and the core net.