CN104427572B

CN104427572B - Packet data convergence protocol data packet processing method, device and communication system

Info

Publication number: CN104427572B
Application number: CN201310411088.1A
Authority: CN
Inventors: 李志军; 谢宝国
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2013-09-10
Filing date: 2013-09-10
Publication date: 2019-06-11
Anticipated expiration: 2033-09-10
Also published as: WO2015035915A1; CN104427572A

Abstract

The present invention provides a kind of packet data polymerized agreement PDCP data package processing method, device, terminal, base station and communication systems, this method comprises: construction PDCP data packet, wherein, the header field part of PDCP data packet includes that neighbour communicates instruction information and receives the identification information of terminal；PDCP data packet and reception terminal according to construction carry out neighbour's communication, through the invention, it solves the problems, such as neighbour's communication path can not be switched to normal EPC communication path in the related technology, be not also available existing framework and technological means realizes the Lawful Interception communicated to neighbour, and then can be realized and neighbour's communication path is switched to normal EPC communication path, it also can be realized the effect for communicating to neighbour and carrying out Lawful Interception.

Description

Packet data convergence protocol data packet processing method, device and communication system

Technical field

The present invention relates to the communications fields, in particular to a kind of packet data polymerized agreement (Packet Data Convergence Protocol, abbreviation PDCP) data package processing method, device, terminal, base station and communication system.

Background technique

Third generation partner program (3rd Generation Partnership Project, referred to as 3GPP) evolution Grouping system (Evolved Packet System, referred to as EPS) wirelessly connect by the Universal Mobile Communication System land of evolution Network (Evolved Universal Terrestrial Radio Access Network, referred to as E-UTRAN), moving tube Manage unit (Mobility Management Entity, referred to as MME), gateway (Serving Gateway, S-GW), Grouped data network gateway (Packet Data Network Gateway, referred to as P-GW PDN GW), home subscriber clothes Be engaged in device (Home Subscriber Server, referred to as HSS), 3GPP authentication and authorization charging (Authentication, Authorization and Accounting, referred to as AAA) server.

Long term evolution (Long Term Evolution, referred to as LTE) technology becomes the first choice of the following public safety network Technology.Public safety network and cluster communication are proposed to long term evolution (Long Term Evolution, referred to as LTE) technology New demand, one of them is that neighbour is supported to communicate (Proximity Service Communication, abbreviation ProSe Communication).In being described below, " ProSe communication " is equivalent to " neighbour's communication ", or " neighbour's communication ".

So-called neighbour communication refers to two or more mobile phones, when their mutual distances relatively when, terminal room can Directly to find and initiate to communicate, communication can not directly be carried out by base station, including data communication and speech communication.Even if The region for not having base station to cover, mobile phone also can use neighbour's communication technology and directly carry out data or voice communication.Currently, 3GPP That is studying neighbour's communication needs summation scheme.

Fig. 1 is the frame of reference composition of neighbour's communication in the related technology, as shown in Figure 1, increasing between UE and UE new direct Interface PC5, PC5 interface is the air interface between UE and UE.ProSe functional entity is the core net function that auxiliary supports neighbour's communication Can entity, which assists to be found between UE, the foundation for assisting PC5 interface etc., and it is logical which is also responsible for neighbour Believe registration, certification, authorization, the discovery of neighbour's Correspondent Node, the foundation or switching of neighbour's communication link (i.e. PC5 link) of UE Deng.ProSe functional entity and existing evolution packet switching center (Evolved Packet Core, referred to as EPC) are (such as MME pass through PC4 interface between).Meanwhile ProSe functional entity is also with application server by PC2 interface, which is used for from answering Application related information is obtained with server, and provides neighbour's communication service for application server.

Neighbour's communication not only can satisfy the demand of emergency communication when without covering between mobile phone, while also be operator Network provides a kind of new possibility and opportunity.Carry out advertising business for example, being communicated using neighbour or utilize neighbour's communication will Data flow is unloaded from core net, even from base station, to promote network capacity etc..

Neighbour's communication provides a kind of and normal EUTRAN/EPC and communicates different communication modes, and Fig. 2 is the relevant technologies The difference schematic diagram of middle neighbour communication and normal communication, as shown in Figure 2.Normal EUTRAN/EPC communication in, either UE and Communication between internetwork communication data (RRC signaling, UE between UE and eNodeB and the NAS signaling between MME) or UE and UE Data (the IP communication between such as UE1 and UE2), are required to by eNodeB.And between UE and UE neighbour communication, usual data without Cross eNodeB, the i.e. content of the not detectable ProSe communication data packet of eNodeB.

In EUTRAN/EPC communication, pass through packet data polymerized agreement (Packet Data between UE and eNodeB Convergence Protocol, abbreviation PDCP) exchange RRC signaling, NAS signaling, IP data.There are two types of PDCP data packet tools Primary format: signaling plane PDCP data packet, user face PDCP data packet.Wherein, signaling plane PDCP data packet is to carry RRC letter It enables, NAS signaling, user face PDCP data packet uses different wireless communications to carry IP data packet, different PDCP data packets Road resource, as signaling plane PDCP data packet is provided using Signaling Radio Bearer (Signalling Radio Bearer, abbreviation SRB) Source, and user face PDCP data packet uses user plane radio bearers (Data Radio Bearer, abbreviation DRB) resource.eNodeB It is signaling message or IP data according to the judgement of PDCP type of data packet after the PDCP data packet for receiving UE transmission.If signaling Message, eNodeB further judge it is RRC signaling or NAS signaling, and if NAS signaling, then eNodeB is transmitted to MME processing. If IP data, IP data packet is sent to SGW in user face GPRS Tunnel Protocol packet (GTP-U) by eNodeB.

And data are transmitted using direct-connected air interface (i.e. PC5 interface in Fig. 1) in neighbour's communication, between UE, this is direct-connected aerial Interface is based on network configuration, and such as during UE access is to network, eNodeB is UE configuration logic channel, to direct-connected sky Middle interface or eNodeB are configured to the logic channel resource of ProSe communication in system broadcast message.The ProSe is patrolled Volume channel, eNodeB can not direct detection in the user data wherein transmitted.

Communication path is switched, in traditional EUTRAN/EPC network, communication switching is based on radio bearer, core net Carrying is carried out, i.e., by radio bearer, core is net loaded is switched to target BS from source base station, to realize the use of UE Family face data path is switched to the purpose of another base station from a base station.However, the ProSe between UE is logical under neighbour's communication Believe that path is based on direct-connected air interface, it is net loaded which is not based on the radio bearer of UE, core.Thus, it presses According to the prior art, ProSe can not be communicated and be switched to EUTRAN/EPC network.

For Lawful Interception, in traditional 3GPP network, Lawful Interception is by public data network gateway (PDN GW, abbreviation PGW) communication data packet (voice or data) for being listened user is copied, and it is sent to LI Server, then The government safety department that public security department etc. wishes to listen to the user communication data is supplied to by LI Server.Wherein, it uses All communication datas at family flow through PDN GW, therefore, when needing to listen to the communication data of certain user, it is only necessary to notify the use Gateway accompanying by family is listened to.But for neighbour's communication, communication data is directly transmitted in terminal room, is led to It often therefore, can not according to technical solution in the related technology without the network of operator (without PDN GW, eNodeB) Neighbour is communicated and implements Lawful Interception.

Therefore, in the related art, neighbour's communication path can not be switched to normal EPC communication path, can not also be made The Lawful Interception communicated to neighbour is realized with existing framework and technological means.

Summary of the invention

The present invention provides a kind of packet data polymerized agreement PDCP data package processing method, device, terminal, base station and lead to Letter system, at least to solve that neighbour's communication path can not be switched to normal EPC communication path in the related technology, can not also make The problem of Lawful Interception that neighbour is communicated with existing framework and technological means realization.

According to an aspect of the invention, there is provided a kind of packet data polymerized agreement PDCP data package processing method, packet It includes: constructing the PDCP data packet, wherein the header field part of the PDCP data packet includes that neighbour communicates instruction information and connects Receive the identification information of terminal；Neighbour's communication is carried out according to the PDCP data packet of construction and the reception terminal.

Preferably, the header field part of the PDCP data packet further includes having the identification information for sending terminal.

Preferably, before constructing the PDCP data packet, further include obtain at least one in the following manner described in connect It receives the identification information of terminal and the IP address of the reception terminal: obtaining the mark for receiving terminal from neighbour's communication server Information and the IP address for receiving terminal；In the case where only getting the identification information for receiving terminal, pass through reception The mode of the IP broadcast data packet for receiving the carrying limited broadcast address that terminal is sent is with obtaining the IP for receiving terminal Location.

Preferably, including: with reception terminal progress neighbour's communication according to the PDCP data packet of construction will be described PDCP data packet is sent to base station, wherein the PDCP data packet is sent to the reception terminal by the base station.

Preferably, before the PDCP data packet is sent to the base station, further include in the following manner at least it One determines the carrying for sending the PDCP data packet: according to the service quality of carrying, determining for sending the PDCP number According to the carrying of packet；Item number according to the carrying for supporting neighbour's communication determines the carrying for sending the PDCP data packet；It will lack Save the carrying for carrying and being determined as sending the PDCP data packet.

Preferably, it is described receive terminal identification information, alternatively, it is described send terminal identification information be it is following at least it One: neighbour's communication server is the unique identification information of the whole network of terminal UE distribution；Third generation mobile Partnership Program 3GPP Network is the identification information of terminal UE distribution；Neighbour's communication server is the UE according to the position of the UE Neighbour's communications identification information in the regional area of distribution；The Universal Terrestrial wireless access network EUTRAN of evolution is according to the UE's Position is the temporary identifier information in the regional area of UE distribution；Position of the evolution packet switching center EPC according to the UE The temporary identifier information being set in the regional area of the UE distribution.

According to another aspect of the present invention, a kind of packet data polymerized agreement PDCP data package processing method is provided, is wrapped It includes: receiving and send the PDCP data packet that terminal is sent, wherein the header field part of the PDCP data packet includes that neighbour's communication refers to Show information and receives the identification information of terminal；The PDCP data packet is sent to by the header field part according to the PDCP data packet The reception terminal.

Preferably, the PDCP data packet is sent to the reception eventually in the header field part according to the PDCP data packet Before end, further includes: fill in the identification information for sending terminal in the header field part of the PDCP data packet.

Preferably, the PDCP data packet is sent to the reception eventually in the header field part according to the PDCP data packet It further include determining at least one in the following manner for the PDCP data packet to be sent to the reception terminal before end Carrying: the service quality according to carrying is determined for the PDCP data packet to be sent to the carrying for receiving terminal；Foundation The item number of the carrying of neighbour's communication is supported to determine for the PDCP data packet to be sent to the carrying for receiving terminal；It will lack Carrying is saved to be determined as the PDCP data packet to be sent to the carrying for receiving terminal.

Preferably, the PDCP data packet is sent to the reception terminal according to the header field part of the PDCP data packet It include: that it is same to judge whether the reception terminal belongs to the transmission terminal according to the identification information for receiving terminal Base station；In the case where the judgment result is yes, the PDCP data packet is transmitted directly to the reception terminal；And/or sentencing In the case that disconnected result is no, the IP data packet that will be extracted from the PDCP data packet, to gateway SGW/ common data Gateway PGW sends the IP data packet, is ultimately sent to the reception terminal.

It is according to the present invention also on the one hand to provide a kind of packet data polymerized agreement PDCP data packet processing, it wraps It includes: constructing module, for constructing the PDCP data packet, wherein the header field part of the PDCP data packet includes that neighbour is logical News instruction information and the identification information for receiving terminal；Communication module, for being connect according to the PDCP data packet of construction with described It receives terminal and carries out neighbour's communication.

Preferably, which further includes obtaining module, and the acquisitions module is at least one in the following manner acquisition The identification information for receiving terminal and the IP address for receiving terminal: the reception terminal is obtained from neighbour's communication server Identification information and it is described receive terminal IP address；In the case where only getting the identification information for receiving terminal, lead to The mode for crossing the IP broadcast data packet for receiving the carrying limited broadcast address that the reception terminal is sent obtains the reception terminal IP address.

Preferably, the communication module includes: the first transmission unit, for the PDCP data packet to be sent to base station, Wherein, the PDCP data packet is sent to the reception terminal by the base station.

Preferably, which further includes determination unit, for before the PDCP data packet is sent to the base station, It further include the carrying determined at least one in the following manner for sending the PDCP data packet: the service quality according to carrying Determine the carrying for sending the PDCP data packet；Item number according to the carrying for supporting neighbour's communication determines described for sending The carrying of PDCP data packet；Default bearer is determined as to be used to send the carrying of the PDCP data packet.

Also one side according to the present invention, provides a kind of terminal, including device described in any of the above embodiments.

According to invention in another aspect, providing a kind of packet data polymerized agreement PDCP data packet processing, comprising: Receiving module, for receiving the PDCP data packet for sending terminal and sending, wherein the header field part of the PDCP data packet includes Neighbour communicates instruction information and receives the identification information of terminal；Sending module, for the header field portion according to the PDCP data packet Divide and the PDCP data packet is sent to the reception terminal.

Preferably, which further includes filling in module, described to fill in module, in the head according to the PDCP data packet Before the PDCP data packet is sent to the reception terminal by domain part, institute is filled in the header field part of the PDCP data packet State the identification information for sending terminal.

Preferably, which further includes determining module, for will be described in the header field part according to the PDCP data packet PDCP data packet is sent to before the reception terminal, is determined at least one in the following manner for by the PDCP data packet Be sent to the carrying for receiving terminal: the service quality according to carrying determines described for the PDCP data packet to be sent to Receive the carrying of terminal；Item number according to the carrying for supporting neighbour's communication determines described for the PDCP data packet to be sent to Receive the carrying of terminal；Default bearer is determined as being used for the PDCP data packet is sent to the carrying for receiving terminal.

Preferably, the sending module includes: judging unit, for according to the identification information for receiving terminal, judgement Whether the reception terminal and the transmission terminal belong to the same base station；Second transmission unit, in above-mentioned judging unit Judging result be in the case where, the PDCP data packet is transmitted directly to the reception terminal；And/or third is sent Unit, the IP number for will be extracted from the PDCP data packet in the case where the judging result of above-mentioned judging unit is no According to packet, it is ultimately sent to the reception terminal.

According to another aspect of the invention, a kind of base station is provided, which is characterized in that including dress described in any of the above embodiments It sets.

It is according to the present invention also on the one hand to provide a kind of communication system, including terminal described above and described above Base station.

Through the invention, using the construction PDCP data packet, wherein the header field part of the PDCP data packet includes Neighbour communicates instruction information and receives the identification information of terminal；According to construction the PDCP data packet and the reception terminal into Row neighbour communication, normal EPC communication path can not be switched to neighbour's communication path in the related technology, can not also make by solving The problem of Lawful Interception that neighbour is communicated with existing framework and technological means realization, and then can be realized neighbour's communication path It is switched to normal EPC communication path, also can be realized the effect for communicating to neighbour and carrying out Lawful Interception.

Detailed description of the invention

The drawings described herein are used to provide a further understanding of the present invention, constitutes part of this application, this hair Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings:

Fig. 1 is the frame of reference composition of neighbour's communication in the related technology；

Fig. 2 is the difference schematic diagram of neighbour's communication and normal communication in the related technology；

Fig. 3 is the flow chart of packet data polymerized agreement PDCP data package processing method one according to an embodiment of the present invention；

Fig. 4 is the flow chart of packet data polymerized agreement PDCP data package processing method two according to an embodiment of the present invention；

Fig. 5 is the structural frames of packet data polymerized agreement PDCP data packet processing one according to an embodiment of the present invention Figure；

Fig. 6 is the preferred structure of packet data polymerized agreement PDCP data packet processing one according to an embodiment of the present invention Block diagram；

Fig. 7 is communication module in packet data polymerized agreement PDCP data packet processing one according to an embodiment of the present invention 54 preferred structure block diagram one；

Fig. 8 is communication module in packet data polymerized agreement PDCP data packet processing one according to an embodiment of the present invention 54 preferred structure block diagram two；

Fig. 9 is the structural block diagram of terminal according to an embodiment of the present invention；

Figure 10 is the structural frames of packet data polymerized agreement PDCP data packet processing two according to an embodiment of the present invention Figure；

Figure 11 is the preferred knot of packet data polymerized agreement PDCP data packet processing two according to an embodiment of the present invention Structure block diagram one；

Figure 12 is the preferred knot of packet data polymerized agreement PDCP data packet processing two according to an embodiment of the present invention Structure block diagram two；

Figure 13 is to send mould in packet data polymerized agreement PDCP data packet processing two according to an embodiment of the present invention The preferred structure block diagram of block 104；

Figure 14 is the structural block diagram of base station according to an embodiment of the present invention；

Figure 15 is the structural block diagram of communication system according to an embodiment of the present invention；

Figure 16 is neighbour's discovery in the related technology and communication Establishing process figure；

Figure 17 is the form schematic diagram of user face PDCP data packet in the related technology；

Figure 18 is the PDCP data packet format one according to the preferred embodiment of the invention for ProSe communication；

Figure 19 is the PDCP data packet format two according to the preferred embodiment of the invention for ProSe communication；

Figure 20 is the stream for the PDCP data packet that base station local routing according to the preferred embodiment of the invention carries ProSe data Cheng Tu；

Figure 21 is that base station according to the preferred embodiment of the invention routes the PDCP data packet for carrying ProSe communication data upwards Flow chart；

Figure 22 is the flow chart that neighbour's end message is obtained in neighbour's discovery procedure according to an embodiment of the present invention；

Figure 23 is the method flow diagram according to the preferred embodiment of the invention that IP address is mutually detected using IP broadcast.

Specific embodiment

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings and in combination with Examples.It should be noted that not conflicting In the case of, the features in the embodiments and the embodiments of the present application can be combined with each other.

A kind of packet data polymerized agreement PDCP data package processing method is provided in the present embodiment, and Fig. 3 is according to this The flow chart of the packet data polymerized agreement PDCP data package processing method one of inventive embodiments, as shown in figure 3, the process includes Following steps:

Step S302 constructs PDCP data packet, wherein the header field part of the PDCP data packet includes that neighbour communicates instruction Information and the identification information for receiving terminal；

Step S304, PDCP data packet and reception terminal according to construction carry out neighbour's communication.

Through the above steps, the PDCP data packet for carrying out neighbour's communication is improved, is carried in PDCP data packet Neighbour communicates instruction information and receives the identification information of terminal, realizes forwarding of the data packet of neighbour's communication on the level of base station To target terminal, above- mentioned information are not carried relative to the PDCP data packet for being used for neighbour's communication in the related technology, cannot achieve close Adjacent communication path is switched to normal EPC communication path, and cannot achieve and communicate the problem of carrying out Lawful Interception, base station to neighbour It can effectively realize that neighbour's communication path, which is switched to normal EPC, to be led to according to above- mentioned information entrained by above-mentioned PDCP data packet Path is interrogated, also can be realized and progress Lawful Interception is communicated to neighbour.

Wherein, the header field part of PDCP data packet further includes having the identification information for sending terminal, and processing in this way connects Under the premise of receipts terminal does not need to unlock IP data packet when receiving the PDCP data packet for sending terminal transmission, so that it may obtain The transmission terminal for sending the PDCP data packet is known, convenient for receiving terminal Quick-return IP data.

Before constructing PDCP data packet, obtains the identification information of the reception terminal for constructing the PDCP data packet and connect The mode of IP address for receiving terminal can be very much, for example, the mark for receiving terminal can be obtained at least one in the following manner Information and the IP address for receiving terminal: the identification information for receiving terminal and the IP for receiving terminal are obtained from neighbour's communication server Location, which obtains the identification information of the reception terminal and receive the IP address of terminal can be multiple before In the process, for example, the IP of the identification information for receiving terminal and reception terminal can be obtained during neighbour's communication registration Location；The identification information of the reception terminal is obtained during can also identifying and distribute by the neighbour in the registration that neighbour communicates With the IP address for receiving terminal, it is, of course, also possible to above-mentioned by being obtained during acquisition buddy list in above process It receives the identification information of terminal and receives the IP address of terminal.For another example only getting the feelings for receiving the identification information of terminal Under condition, the IP for receiving terminal is obtained by way of receiving the IP broadcast data packet of carrying limited broadcast address of terminal transmission Location.IP address is mutually detected by carrying the IP data packet of limited broadcast address.

It includes: that PDCP data packet is sent to base that PDCP data packet and reception terminal according to construction, which carry out neighbour's communication, It stands, wherein PDCP data packet is sent to reception terminal by base station.

Preferably, before PDCP data packet is sent to base station, when determining the carrying for sending PDCP data packet, A variety of processing modes can be used, for example, can determine at least one in the following manner for sending holding for PDCP data packet It carries: according to the service quality of carrying, determining the carrying for sending PDCP data packet；Item according to the carrying for supporting neighbour's communication Number determines the carrying for sending PDCP data packet, for example, there are the carrying of a plurality of support neighbour communication, from this A carrying being determined as sending PDCP data packet is selected in a plurality of carrying for supporting neighbour's communication, and there is only one When supporting the carrying of neighbour's communication, this only deposited can be supported the carrying of neighbour's communication be determined as being used to send PDCP data The carrying of packet；Default bearer is determined as to be used to send the carrying of PDCP data packet.It should be noted that above-mentioned determination is for sending out Sending the carrying of PDCP data packet can also be combined with each other, for example, there are the carrying of a plurality of support neighbour communication, it can Determines the carrying for sending PDCP data packet with the service quality according to carrying, and to support what neighbour communicated there is only one In the case where carrying, it is the carrying for sending PDCP data packet that determining default bearer, which also can be directly used,.Accordingly, it is determined that with Depending on the carrying for sending PDCP data packet can be according to concrete condition, selection carrying can also be inclined to according to specific choice.

It should be noted that receive terminal identification information, alternatively, send terminal identification information can for it is following at least One of: neighbour's communication server is the unique identification information of the whole network of terminal UE distribution；Third generation mobile Partnership Program 3GPP network is the identification information of terminal UE distribution；Neighbour's communication server is according to the partial zones that the position of UE is that UE is distributed Neighbour's communications identification information in domain；The Universal Terrestrial wireless access network EUTRAN of evolution is according to the office that the position of UE is that UE is distributed Temporary identifier information in portion region；Evolution packet switching center EPC is in the regional area of UE distribution according to the position of UE Temporary identifier information.

In the present embodiment, a kind of packet data polymerized agreement PDCP data package processing method is additionally provided, Fig. 4 is basis The flow chart of the packet data polymerized agreement PDCP data package processing method two of the embodiment of the present invention, as shown in figure 4, the process packet Include following steps:

Step S402 is received and is sent the PDCP data packet that terminal is sent, wherein the header field part of the PDCP data packet includes There is neighbour to communicate instruction information and receives the identification information of terminal；

PDCP data packet is sent to reception terminal by step S404, the header field part according to PDCP data packet.

More preferably, the header field part of PDCP data packet further includes having the identification information for sending terminal.

Wherein, PDCP data packet is sent in the header field part according to PDCP data packet before receiving terminal, further includes: The identification information for sending terminal is filled in the header field part of PDCP data packet.It only include one in the header field part of PDCP data packet When terminal iidentification indicates, in the identification information of the filling transmission terminal into reception terminal received PDCP data packet.And above-mentioned When the header field part of PDCP data packet is indicated there are two terminal iidentifications, only the mark for receiving terminal is not believed sending terminal When breath filling is filled without that will send the mark of terminal, above-mentioned transmission end is filled in the header field part of PDCP data packet by base station The identification information at end.

Likewise, being determined before PDCP data packet is sent to reception terminal by the header field part according to PDCP data packet For institute's PDCP data packet is sent to receive terminal carrying can also using a variety of processing modes, for example, can by with At least one under type is determined for PDCP data packet to be sent to the carrying for receiving terminal: the service quality according to carrying determines For PDCP data packet to be sent to the carrying for receiving terminal；According to support neighbour communication carrying item number determine for will PDCP data packet is sent to the carrying for receiving terminal；Default bearer is determined as being used to PDCP data packet being sent to reception terminal Carrying.

Preferably, being sent to PDCP data packet according to the header field part of PDCP data packet and receiving terminal includes: that foundation connects The identification information for receiving terminal judges to receive terminal and sends whether terminal belongs to the same base station；In the feelings that judging result is yes Under condition, PDCP data packet is transmitted directly to receive terminal；It and/or if the determination result is NO, will be from PDCP data The IP data packet extracted in packet sends IP data packet to gateway SGW/ common data gateway PGW, is ultimately sent to receive eventually End.

A kind of packet data polymerized agreement PDCP data packet processing is additionally provided in the present embodiment, which is used for Realize above-described embodiment and preferred embodiment, the descriptions that have already been made will not be repeated.As used below, term " mould The combination of the software and/or hardware of predetermined function may be implemented in block ".Although device described in following embodiment is preferably with soft Part is realized, but the realization of the combination of hardware or software and hardware is also that may and be contemplated.

Fig. 5 is the structural frames of packet data polymerized agreement PDCP data packet processing one according to an embodiment of the present invention Figure, as shown in figure 5, the device includes constructing module 52 and communication module 54, is below illustrated the device.

Constructing module 52, for constructing PDCP data packet, wherein the header field part of the PDCP data packet includes that neighbour is logical News instruction information and the identification information for receiving terminal；Communication module 54 is connected to above-mentioned constructing module 52, for according to construction PDCP data packet and reception terminal carry out neighbour's communication.

Fig. 6 is the preferred structure of packet data polymerized agreement PDCP data packet processing one according to an embodiment of the present invention Block diagram, as shown in fig. 6, the device in addition to including all modules shown in fig. 5, further includes obtaining module 62, below to the acquisition Module 62 is illustrated.

Module 62 is obtained, above-mentioned constructing module 52 is connected to, receives terminal for obtaining at least one in the following manner Identification information and receive terminal IP address: from neighbour's communication server obtain receive terminal identification information and receive terminal IP address；It is limited by receiving the carrying that terminal is sent in the case where only getting the identification information for receiving terminal The mode of the IP broadcast data packet of broadcast address obtains the IP address for receiving terminal.

Fig. 7 is communication module in packet data polymerized agreement PDCP data packet processing one according to an embodiment of the present invention 54 preferred structure block diagram one, as shown in fig. 7, the communication module 54 includes the first transmission unit 72, below to first transmission Unit 72 is illustrated.

First transmission unit 72, for PDCP data packet to be sent to base station, wherein sent PDCP data packet by base station Give reception terminal.

Fig. 8 is communication module in packet data polymerized agreement PDCP data packet processing one according to an embodiment of the present invention 54 preferred structure block diagram two, as shown in figure 8, the communication module 54 further includes determination unit 82, below to the determination unit 82 It is illustrated.

The determination unit 82 is connected to above-mentioned first transmission unit 72, for by PDCP data packet be sent to base station it Before, it further include the carrying determined at least one in the following manner for sending PDCP data packet: the service quality according to carrying Determine the carrying for sending PDCP data packet；Item number according to the carrying for supporting neighbour's communication is determined for sending PDCP data The carrying of packet；Default bearer is determined as to be used to send the carrying of PDCP data packet.

In the present embodiment, a kind of terminal is additionally provided, Fig. 9 is the structural block diagram of terminal according to an embodiment of the present invention, As shown in figure 9, the terminal 90 includes the packet data polymerized agreement PDCP data packet processing 1 of any of the above-described.

In the present embodiment, a kind of packet data polymerized agreement PDCP data packet processing is additionally provided, Figure 10 is root It, as shown in Figure 10, should according to the structural block diagram of the packet data polymerized agreement PDCP data packet processing two of the embodiment of the present invention Device includes receiving module 102 and sending module 104, is illustrated below to the device.

Receiving module 102, for receiving the PDCP data packet for sending terminal and sending, wherein the header field portion of PDCP data packet Divide includes that neighbour communicates instruction information and receives the identification information of terminal；Sending module 104 is connected to above-mentioned receiving module 102, PDCP data packet is sent to reception terminal for the header field part according to PDCP data packet.

Figure 11 is the preferred knot of packet data polymerized agreement PDCP data packet processing two according to an embodiment of the present invention Structure block diagram one, as shown in figure 11, the device further include filling in module 1102 in addition to including all modules shown in Fig. 10, below Module 1102 is filled in this to be illustrated.

This fills in module 1102, is connected to above-mentioned receiving module 102 and sending module 104, for according to PDCP data PDCP data packet is sent to before receiving terminal by the header field part of packet, fills in transmission terminal in the header field part of PDCP data packet Identification information.

Figure 12 is the preferred knot of packet data polymerized agreement PDCP data packet processing two according to an embodiment of the present invention Structure block diagram two, as shown in figure 12, the device further include determining module 1202 in addition to including all modules shown in Fig. 10, below The determining module 1202 is illustrated.

Determining module 1202 is connected to above-mentioned receiving module 102 and sending module 104, for according to PDCP data packet Header field part PDCP data packet is sent to before receiving terminal, determined at least one in the following manner for by PDCP number The carrying for receiving terminal is sent to according to packet: the service quality according to carrying is determined for PDCP data packet to be sent to reception terminal Carrying；Item number according to the carrying for supporting neighbour's communication is determined for PDCP data packet to be sent to the carrying for receiving terminal； Default bearer is determined as being used for PDCP data packet is sent to the carrying of reception terminal.

Figure 13 is to send mould in packet data polymerized agreement PDCP data packet processing two according to an embodiment of the present invention The preferred structure block diagram of block 104, as shown in figure 13, the sending module 104 include judging unit 1302, the second transmission unit 1304 And/or third transmission unit 1306, the sending module 104 is illustrated below.

Judging unit 1302, for according to the identification information for receiving terminal, judging to receive terminal and sending whether terminal belongs to In the same base station；Second transmission unit 1304 is connected to above-mentioned judging unit 1302, for the judgement in above-mentioned judging unit It as a result is in the case where being, PDCP data packet to be transmitted directly to receive terminal；And/or third transmission unit 1306, it is connected to Above-mentioned judging unit 1302, for that will be mentioned from PDCP data packet in the case where the judging result of above-mentioned judging unit is no The IP data packet taken is ultimately sent to receive terminal.

Figure 14 is the structural block diagram of base station according to an embodiment of the present invention, and as shown in figure 14, which includes above-mentioned One packet data polymerized agreement PDCP data packet processing 2 142.

Figure 15 is the structural block diagram of communication system according to an embodiment of the present invention, as shown in figure 15, the communication system 150 packet Include above-mentioned terminal 90 and above-mentioned base station 140, wherein the terminal 90 carries out neighbour's communication by base station 140.

The format of new neighbour's communication data packets through the foregoing embodiment and provided by preferred embodiment, and new The method of neighbour's communication data packet routing, by the new packet format and new method for routing, so that neighbour's communication data Transmission both can be net loaded based on existing radio bearer, core, realizes that the data packet of neighbour's communication turns on eNodeB level Issue target UE.

Figure 16 is that neighbour has found and communicates Establishing process figure in the related technology, as shown in figure 16, in the process, source terminal Neighbour's terminal is found under the auxiliary of network, according to the resource allocation of network, and is received terminal and is initiated direct-connected communication process, including Following steps:

1) ProSe registration process:

Step S1601, UE1 request is linked into EUTRAN network, and attachment is completed and is assigned IP address；

Step S1602, UE1 initiate ProSe registration process to Prose Server；

In Prose registration process, ProSe Server carries out basic application-layer authentication to UE1.If UE1 does not allow to make With ProSe business, then refuse the ProSe registration request of UE1.

In ProSe registration process, ProSe Server is possible to and neighbour's communication application service device (ProSe Application Server, referred to as ProSe AS) interaction, it obtains the buddy list of UE1 and is sent to UE1.Alternatively, UE1 Directly buddy list is obtained from ProSe AS.

Step S1603~step S1604, UE2 is linked into network, then initiates ProSe to Prose Server and registered Journey；

Step S1605, the ProSe application (such as QQ) that UE1 is run from terminal obtain buddy list；

Step S1606~step S1607, UE1 initiates ProSe-ID distribution request, the ProSe-ID to ProSe Server Distribution request is sent to ProSe Server by EUTRAN/EPC；

In the ProSe-ID distribution request, application layer user identifier (UE1Application-ID), the UE1 of UE1 are carried Buddy list (UE1Friend-List).For example, the Application-ID of UE1 are as follows: zhangsan@qq.com.

Step S1608~step S1609, ProSe Server obtains the mapping of Application-ID and ProSe-ID；

In this step, ProSe Server ProSe Server is Application-ID distribution according to algorithm Prose-ID, and give mapping notice to ProSe AS.Alternatively, ProSe Server obtains the good friend of UE1 and UE1 from ProSe AS The mapping of the Application-ID and ProSe-ID of list.

For example, by Application-ID(, that is, zhangsan@qq.com of UE1) it is mapped as ProSe-ID are as follows: GTER543 $#2FSJ67DFSF。

Step S1610, ProSe Server returns to ProSe-ID assignment response to EUTRAN/EPC；

It in this step, include the ProSe-ID of UE1 in response to the request of aforementioned UE1, in ProSe-ID assignment response, with And the ProSe-ID of the good friend of UE1.

Step S1611, after EUTRAN/EPC receives the ProSe-ID assignment response of ProSe Server transmission, by each UE's The mapping relations of Application-ID, ProSe-ID are saved in mapping table；

ProSe-ID assignment response is transmitted to UE1 by step S1612, EUTRAN/EPC.To which UE1 obtains itself The ProSe-ID of ProSe-ID and good friend；

Step S1613, UE2 initiates ProSe-ID distribution request, as described in step S1605~S1612；

It should be noted that UE1 and UE2 initiates the process of ProSe registration and ProSe-ID distribution, there is no successively suitable Sequence.

2) ProSe discovery procedure:

Step S1614, UE1 initiate neighbour's broadcast；

When UE access is to EUTRAN network, network is the resource that possible find to UE configuration to ProSe, such as confession The particular broadcast channel that ProSe is used.On this channel, UE can broadcast the ProSe-ID of itself, other UE read broadcast letter Road, may detect which current UE is the neighbour that can be found.

Alternatively, UE can not directly send information on ProSe broadcast channel, UE initiates neighbour's broadcast request to eNodeB, The ProSe-ID of itself is carried, and eNodeB presses step S1615, and neighbour's broadcast is initiated on the ProSe broadcast channel.

Step S1615~step S1616, eNodeB initiates neighbour and broadcasts, and broadcasts the ProSe-ID of UE1；

According to the planning to ProSe broadcast channel, eNodeB can broadcast multiple UE's simultaneously on the broadcast channel ProSe-ID。

Neighbour's broadcast is monitored in step S1617, UE2 monitoring, detects the ProSe-ID of UE1；

Step S1618, UE2 apply the ProSe-ID of the UE1 ProSe for being sent to last time；

In this step, ProSe applies the buddy list according to UE1, and the ProSe-ID of UE1 is mapped to UE1's Application-ID.If UE1, not in the buddy list of UE2, ProSe application possibly filters out the ProSe-ID of UE1, do not show To user.

Step S1619, UE2 initiates neighbour's broadcast, as described in step S1614~step S1618.

It should be noted that UE1 and UE2 initiates the process of neighbour's broadcast, sequencing is not present.

3) ProSe communication process:

After UE1 and UE2 mutually detect as neighbour's terminal, UE1 and UE2 can initiate ProSe communication process.

Step S1620, UE1 initiate ProSe communication request to EUTRN/EPC, carry the ProSe-ID of UE2；

Typically, eNodeB handles the ProSe communication request of UE, distributes communication resources for UE.If two of ProSe communication For UE not at the same eNodeB, ProSe communication request treatment process may relate to MME.

Step S1621, EUTRAN/EPC are ProSe allocation of communications resource；

Step S1622, EUTRAN/EPC send ProSe communication notifications to UE2, carry ProSe-ID, ProSe money of UE1 Source distribution；

Step S1623, UE2 return to ProSe communication response, if UE2 receives ProSe communication request, return to ACK；

Step S1624, EUTRAN/EPC return to ProSe communication notifications to UE1, carry response, the ProSe resource point of UE2 Match；

Step S1625, UE1, UE2 configure the ProSe communication resource according to the notice of EUTRAN/EPC.Thereafter, UE1 and UE2 Direct Communication is initiated on direct interface.

Find and communicate establishment process by ProSe described in above-mentioned Figure 16, terminal room can Direct Communication, and data packet is not It needs by base station, core net.

Figure 17 is the form schematic diagram of user face PDCP data packet in the related technology, as shown in figure 17, is different from signaling plane PDCP data packet can be run in Signaling Radio Bearer (SRB), user plane radio bearers (DRB), and user face PDCP data packet is only capable of It runs on user plane radio bearers (DRB).

In PDCP data packet format, each section information is as follows:

- D/C, user face/signaling plane are designated as, and a length of 1.D/C indicating bit indicates the PDCP data packet to carry letter Enable face data (such as RRC/NAS message, etc.) or IP data.

- R, reserved bit, a length of 1.Reserved bit is set to 0 at present；

There are 3 reserved bits (R) in the PDCP data packet of user face, if 3 reserved bits are not all 0, then it represents that PDCP number It is a special PDCP message according to packet, such as 001 indicates ROHC compression response messages.010-111 belongs to reservation setting at present, To specify specific PDCP message/data Packet type；

- SN, PDCP packet number position, according to PDCP data packet format, length can be 5,7,12.PDCP SN to The transmission sequence of synchronous PDCP packet, one PDCP data packet of every transmission, SN increase 1 between UE and eNodeB.PDCP packet number needs It is synchronous between UE and eNodeB, it can be used to detect whether that intermediate node seals in and send false data between UE and eNodeB；

- Data, to carry specific data, such as RRC signaling, IP data packet.

Based on PDCP data packet format in the related technology, a kind of new PDCP data packet is provided in the present embodiment, The construction of the PDCP is as follows: the header field part of the PDCP data packet includes following information: neighbour communicates indicating bit (ProSe instruction Position), it is neighbour's communication data packet which, which communicates indicating bit and be used to indicate the PDCP data packet,；Receive the mark of terminal (Target UE ID).More preferably, the header field part of the PDCP data packet can also include: send the mark (Source of terminal UE ID), wherein it should be noted that Source UE ID is not necessary, when not carrying the Source UE ID, The length of PDCP data packet can be reduced.

The mark of the reception terminal, the mark (the reception terminal is referred to as with terminal below and sends terminal) for sending terminal, Can be at least one following: neighbour's communication server (ProSe Server) be neighbour's communication id (ProSe- of UE distribution ID)；3GPP network is the ID of terminal distribution.Wherein, neighbour's communication server (ProSe Server) is the ProSe- of UE distribution ID can be at least one of: for unique ProSe-ID in the whole network of UE distribution；According to the location information of UE, in local position Set the ProSe-ID distributed in region；The 3GPP network is that the ID of terminal distribution can be at least one of: IMSI, S- TMSI、RNTI。

Based on above-mentioned new PDCP data packet, a kind of neighbour's communication data packets routing side is additionally provided in the present embodiment It is logical to carry neighbour this method comprises: transmitting terminal UE sends PDCP data packet to eNodeB in the header field of the PDCP data packet for method The ID of news mark (ProSe ID), receiving end UE；ENodeB is according to neighbour's communications identification (ProSe of PDCP data packet header field Indi), the ID of receiving end UE, carry out data packet by.

Transmitting terminal UE to eNodeB send PDCP data packet before, further includes: transmitting terminal UE know receiving end UE ID, The IP of receiving end UE.More preferably, transmitting terminal UE to eNodeB send DPCP data packet before, further includes: transmitting terminal UE from The suitable carrying of selection in EPS carrying/wireless DRB bearing resource；The mode that transmitting terminal UE selection suitably carries can be a variety of, For example, can at least one the in the following ways suitable carrying of selection:

If there is the DRB of multiple ProSe Enabled, by the qos requirement for sending data, select suitable EPS carry and its Corresponding wireless DRB carrying；

If the EPS carrying and its corresponding wireless DRB carrying of only one ProSe Enable, select the EPS carry and Its corresponding wireless DRB carrying；

Select EPS default bearer and its corresponding wireless DRB carrying；

ENodeB carry out data packet by when, can use following processing: eNodeB connects according to the ID of receiving end UE, judgement Terminal is received whether at eNodeB, if receiving end UE, at eNodeB, eNodeB directly sends PDCP data to receiving end UE Packet；And/or if receiving end UE is not at the eNodeB, eNodeB extracts the IP data in PDCP data packet, to overlying roaduay By (being sent to SGW).

Wherein, in the case where eNodeB judges that receiving end UE is at eNodeB, the PDCP directly is sent to receiving end UE Data packet, comprising: eNodeB selects suitable wireless DRB carrying from the wireless DRB bearing resource of receiving end UE, wireless at this PDCP data packet is sent in DRB carrying.Equally, eNodeB selects suitable nothing from the wireless DRB bearing resource of receiving end UE Line DRB carrying can also use a variety of processing modes, for example, can at least one in the following way: if there is multiple ProSe The DRB of Enabled selects the DRB of receiving end UE by the QCI of transmitting terminal UE；If the DRB of only one ProSe Enable, selection The DRB；Select the corresponding DRB of EPS default bearer.

With reference to the accompanying drawing, the preferred embodiment of the present invention is illustrated.

Preferred embodiment one carries the PDCP data packet format of ProSe communication data

Figure 18, Figure 19 are the PDCP data packet format schematic diagrames in the preferred embodiment of the present invention for ProSe communication, relatively The user face PDCP data packet under the relevant technologies, there is following improvement: in the header field part of PDCP data packet, there are following information: Neighbour communicates instruction (ProSe ID): PDU Type(i.e. 3 R reserved bit) part, it is arranged to ProSe indicating bit, can use Value in 010-111 typically may be configured as 111；Reception/transmission Termination ID (Target/Source UE ID), comprising: connect Receive Termination ID (Target UE ID): the ID to indicate reception terminal, length can be arranged according to network condition, can typically set It is set to 16.Send Termination ID (Source UE ID): the ID to indicate source terminal, length are arranged according to network condition, allusion quotation It may be configured as to type 16.Source terminal ID can be used for receiving terminal and not detect IP data packet included in PDCP data packet Under the premise of, that is, it can determine whether ProSe data source.

In addition, as user face PDCP data packet in the related technology, the PDCP data packet format shown in Figure 18,19 In, also include the part Data, carry IP data, carries the IP data packet of neighbour's communication herein.If it is legal that network is assigned with for UE IP address, which should distribute to the real IP address of UE based on network, allow eNodeB by the PDCP data IP data packet in packet extracts, and SGW is sent on S1-U interface according to process in the related technology, it is thus possible to compared with The switching communicated to EPC is communicated from ProSe to be easy to accomplish.

In the PDCP data packet format shown in above-mentioned Figure 18,19, for reception/transmission Termination ID (Target/Source UE ID) information, the filling in PDCP data packet header field part can be used such as one of under type:

Figure 18 is the PDCP data packet format one according to the preferred embodiment of the invention for ProSe communication, such as Figure 18 institute Show, in PDCP data packet header field, there is only a Termination ID elements: the Termination ID element, in the PDCP for sending terminal sending In data packet, it is filled with the ID(Target UE ID for receiving terminal), in receiving the received PDCP data packet of terminal, it is filled with Send the ID(Source UE ID of terminal).When eNodeB receive send PDCP data packet that terminal is sent when, to connecing When receiving terminal transmission PDCP data packet, according to the ID of the transmission terminal stored on eNodeB, which is filled with Send the ID(Source UE ID of terminal)；

Figure 19 is the PDCP data packet format two according to the preferred embodiment of the invention for ProSe communication, such as Figure 19 institute Show, in PDCP data packet header field, there are two Termination ID elements, and filling sends Termination ID (Source UE ID), connects respectively It receives Termination ID (Target UE ID).When eNodeB sends and receivees PDCP data packet, Termination ID element is not altered.

If considering to save radio resource as far as possible, user face PDCP data packet format described in Figure 18 can be used.If no The saving for excessively considering radio resource, then can be used user face PDCP data packet format described in Figure 19.Using lattice described in Figure 19 Formula has the advantage that: terminal is received under the premise of not unlocking IP data packet, you can learn that sending the transmission of PDCP data packet Terminal.Otherwise, terminal is received after receiving PDCP data packet as described in Figure 18, is needed according to the transmission terminal in IP data packet IP address, inquire the corresponding ID for sending terminal, just can know that whom transmitting side terminal is, thus when replying IP data, general Transmitting terminal ID is filled in response PDCP data packet.

It should be noted that can be neighbour's Communications service for reception shown in Figure 18,19/transmission terminal ID Device (ProSe Server) distributes to neighbour's communication id (ProSe-ID) of UE, is also possible to the ID that 3GPP network distributes to UE (referred to as 3GPP-ID), such as the long-term ID that terminal unit contractual to network Time Division is matched, i.e. IMSI or terminal are faced when being attached to EPS network When the interim ID, i.e. S-TMSI that distribute.

For reception/transmission Termination ID, a variety of methods of salary distribution can be used, for example, can distribute with the following method:

(A) ProSe Server is the unique ID(ProSe-ID of the whole network: the ID of UE distribution): ProSe is registered in UE It is distributed when Server, the ProSe-ID is unique in the whole network, identifies the UE in neighbour's communication, is stored in UE, EUTRAN/ On EPC network (such as eNodeB).

(B) 3GPP network is that the identity ID(of UE distribution is referred to as 3GPP-ID, including IMSI/S-TMSI etc.): it contracts in UE To after network, operator is that UE distributes IMSI, which is the long-term identity of terminal.In UE access to EUTRAN/EPC net When network, MME is that UE distributes temporary identifications S-TMSI, maps to IMSI, S-TMSI on-demand update in a network.Work as UE In connected state, which is stored on UE, EUTRAN/EPC network (such as eNodeB, MME).

(C) ProSe Server distributes the ProSe-ID:ProSe Server in a regional area according to the position of UE The band of position (e.g., the combinations of one or more TA/Cell) when can be registered according to UE is distributed in regional area for UE ProSe-ID in the area uniquely, but is not that the whole network is unique.Since neighbour's communication occurs over just the UE of position close proximity On, therefore the lesser ProSe-ID of allocated length is given in the smaller band of position, it is feasible.It is contemplated that use the RNTI as Termination ID carrys out PDCP data packet described in blank map 18,19.

(D) EUTRAN/EPC distributes the interim ID in a regional area: for example, in the relevant technologies according to the position of UE In, eNodeB can distribute the interim ID(Radio Network Temporary Identity of wireless network for UE, referred to as RNTI).The characteristics of RNTI is very short by cell distribution, length.If the position of UE is fixed, the mobile possibility in position is not deposited, then may be used Consideration use the RNTI as Termination ID carry out blank map 18,19 described in PDCP data packet.

In view of radio resource is very valuable, the entrained Termination ID in PDCP data packet, length is answered as small as possible.? In the allocation plan of above-mentioned Termination ID, (C), (D) scheme fill PDCP data using being the ID of UE distribution in regional area Entrained reception Termination ID, source terminal ID in packet, can reduce the length of PDCP data packet to the full extent, save wireless money Source.However, brought defect is using (C), (D) scheme, when UE removes the regional area, need to distribute again for UE New ID, it is possible to the temporary interruption that data packet can be caused to send.

Preferred embodiment two, eNodeB local routing carry the PDCP packet of ProSe communication data

Using PDCP data packet building method described in Figure 18,19, sending terminal can send to eNodeB, connect from eNodeB Receive the PDCP packet (i.e. PDCP data packet of the header field comprising ProSe instruction, reception/transmission terminal ID) for carrying ProSe data.

Different from process described in Figure 16, specific ProSe of eNodeB UE1, the UE2 distribution for neighbour's communication is communicated Resource (i.e. request distribution PC5 air interface resource), in the present embodiment, UE is carried using the EPS having built up, is wireless DRB carrying, to send/receive the PDCP data packet for carrying ProSe data.

Specifically, terminal (Source UE) is sent to wish to send out to when receiving terminal (Target UE) transmission ProSe data Terminal constructions PDCP data packet is sent, carries ProSe instruction, the ID(reception of reception terminal eventually in the header field part of PDCP data packet ProSe-ID, the 3GPP-ID etc. at end), and a suitable DRB is selected in the wireless DRB carrying for sending terminal, to eNodeB Send the PDCP data packet.

Sending terminal (Source UE) can be used one of following method, select suitable EPS carrying/wireless DRB carrying To send the PDCP data packet for carrying ProSe data:

The EPS for supporting neighbour to communicate (ProSe Enabled) carrying/wireless is marked as there are a plurality of if sending terminal DRB carrying is supporting neighbour to communicate the carrying of (ProSe Enabled) according to service quality (QoS) requirement of neighbour's communication In, select a suitable EPS and its corresponding wireless DRB carrying；

The EPS for supporting neighbour to communicate (ProSe Enabled) carrying/wireless is marked as if sending terminal there is only one DRB carrying then uniquely selects EPS carrying and its corresponding wireless DRB carrying；

If sending terminal is not present the EPS carrying/wireless DRB for being marked as that neighbour is supported to communicate (ProSe Enabled) Carrying then selects EPS default bearer (Default Bearer) and its corresponding wireless DRB carrying.

After UE is attached to network, network is when establishing carrying for UE, it is contemplated that neighbour's ability to communicate of UE, according to network Certain bearing marks are that neighbour is supported to communicate (ProSe Enabled), so that UE can be according to the label come for ProSe by strategy The suitable carrying of transmission selection of data.

When not considering service quality (QoS) demand, sending terminal can be default to select EPS default by most simple principle Carrying and corresponding wireless DRB carrying, the default bearing for carrying Prose data is controlled as transmission；

When eNodeB receives the PDCP data packet for sending the carrying ProSe data that terminal is sent, according to PDCP data The ID(Target UE ID of reception terminal in packet), reception terminal is found, checks the wireless DRB resource for receiving terminal, is found Suitable wireless DRB carrying, is sent to reception terminal for the PDCP data packet for carrying ProSe data.

Following method can be used to select the wireless DRB for receiving terminal to carry in eNodeB, carries ProSe number to send According to PDCP data packet:

It is marked as the wireless DRB for supporting neighbour to communicate (ProSe Enabled) carrying there are a plurality of if receiving terminal, ENodeB communicates (ProSe in the support neighbour for receiving terminal according to the service quality (QoS) for the wireless DRB carrying for sending terminal Enabled in carrying), a suitable wireless DRB carrying is selected；

It is carried if receive terminal and to be marked as the wireless DRB for supporting neighbour to communicate (ProSe Enabled) there is only one, Then eNodeB uniquely selects the wireless DRB carrying；

If receiving terminal is not present the wireless DRB carrying for being marked as that neighbour is supported to communicate (ProSe Enabled), ENodeB selects the carrying of wireless DRB corresponding to EPS default bearer (Default Bearer).

Extraly, according to user face PDCP data packet format shown in Figure 18, eNodeB takes to reception terminal transmission Before PDCP data packet with ProSe data, it is also necessary to be changed to the Termination ID in PDCP data packet to send the ID of terminal. ENodeB can find ID(such as ProSe-ID, IMSI, the S-TMSI etc. for sending terminal according to the context for sending terminal), replacement Termination ID element in the header field of the PDCP data packet.

Figure 20 is the stream for the PDCP data packet that base station local routing according to the preferred embodiment of the invention carries ProSe data Cheng Tu is illustrated, which includes the following steps: so that base station is eNodeB as an example as shown in figure 20

Upper layer application (neighbour's communication applications, such as wechat) on step S2001, UE1 initiates the hair of neighbour's communication data It send；

Step S2002, the triggering of response and upper layer application, UE1 construction carry the PDCP data packet of ProSe communication data, And the PDCP data packet is sent to eNodeB；

UE1 detect UE2 be UE1 neighbour, and obtain UE2 ID(such as ProSe-ID, IMSI, S-TMSI etc.), IP Behind address, UE1 can request to send ProSe data packet to UE2.In the header field of the PDCP data packet, ProSe instruction is carried Position, UE2 ID, UE1 ID(it is optional, according to Fig. 6 rather than PDCP data packet format shown in fig. 5).

Step S2003, eNodeB receive PDCP data packet, and according to ProSe indicating bit, UE2ID, differentiation should execute local Routing；

In this step, eNodeB identifies ProSe indicating bit, and judgement should preferentially execute local routing.In turn, eNodeB root According to the reception Termination ID (i.e. UE2ID) in PDCP packet, the eNodeB UE is inquired whether at this eNodeB.If UE is in the eNodeB Under, then eNodeB is according to ID(such as ProSe-ID, IMSI, S-TMSI etc. of the UE saved), it was demonstrated that UE2 at the eNodeB, Then eNodeB can execute local routing to the PDCP data packet.

The wireless DRB carrying of step S2004, eNodeB in UE2 selects suitable DRB, will carry the PDCP number of ProSe data UE2 is sent to according to packet.

In this step, eNodeB inquires the wireless DRB carrying of UE2, using aforementioned side according to the contextual information of UE2 Method selection receives the wireless DRB carrying of terminal (UE2).

According to PDCP data packet format described in Figure 18, eNodeB is before sending PDCP packet to UE2, while by PDCP number The ID for sending terminal (i.e. UE1) is replaced with according to the Termination ID in the header field of packet.

Step S2005, after UE2 receives the PDCP data packet, IP data packet therein is sent to upper layer application, and (neighbour is logical News application).

It is pointed out that 20 the embodiment described of application drawing, should have following primary condition:

UE1, UE2 are neighbour's terminals；

UE1, UE2 are accessed at the same eNodeB, are currently RRC connection status；

For UE1, UE2, the scene at the same eNodeB, Figure 20 the embodiment described are not suitable for simultaneously, however, ENodeB can carry out the IP data packet that superior routing UE is sent according to Figure 21 the embodiment described.

Preferred embodiment three, the routing of eNodeB superior carry the PDCP packet of ProSe communication data

Figure 21 is that base station according to the preferred embodiment of the invention routes the PDCP data packet for carrying ProSe communication data upwards Flow chart, as shown in figure 21, when transmitting terminal UE, receiving end UE be not at the same eNodeB, eNodeB extraction carry IP data in the PDCP data packet of ProSe data, and superior routes the flow chart of the IP data, includes the following steps:

Step S2101~step S2102, as shown in step S2001~step S2002 in Figure 20, UE1, which is sent, to be carried The PDCP data packet of ProSe data；

Step S2103, after eNodeB1 receives the PDCP data packet of carrying ProSe data of UE1 transmission, eventually according to reception Hold ID(, that is, UE2ID), UE2 is judged not at the eNodeB, determines superior routing；

Step S2104, eNodeB1 extract IP data packet from PDCP data packet, and GTP-U data are constructed on S1-U mouth Packet carries IP data packet, is sent to SGW/PGW, and SGW/PGW executes data according to normal IP data packet routing method and routes；

Step S2105 after the SGW of target UE receives IP data packet, is accessed to eNodeB(, that is, UE2 of target UE ENodeB2 GTP-U data packet) is sent, IP data packet is carried；

It is assumed herein that UE1, UE2 are on the same SGW, naturally it is also possible to not on a SGW, not influenced on process.

IP data packet is sent to UE2 by the prior art by step S2106, eNodeB2；

Step S2107, after UE2 receives the PDCP data packet, IP data packet therein is sent to upper layer application, and (neighbour is logical News application)；

Step S2108, after UE2 receives the IP data packet of UE1 transmission, possible returning response IP packet.Since UE2 is from normal The IP data packet of UE1 transmission is received in PDCP data packet, thus UE2 presses normal flow returning response IP packet.

In process described in Figure 21, UE1 uses the PDCP format of carrying ProSe data to UE2 transmission data, and from The response IP packet that UE2 is received is sent from normal PDCP data packet, then UE1 be believed that it is subsequent should be by the transmission of normal IP data Process sends subsequent IP data packet to UE2.

Example IV obtains neighbour's end message in neighbour's discovery procedure

In the embodiment shown in Figure 20,21, UE1, UE2 need to detect neighbour each other first, and when UE1 is sent to UE2 When ProSe data, UE1 needs to know the ID(ProSe-ID or 3GPP-ID of IP, UE2 of UE2).

If UE1 sends PDCP data to UE2 using ProSe-ID, according to process described in Figure 16, UE1 can be obtained directly Obtain the ProSe-ID of UE2.

If UE1 uses the 3GPP-ID(IMSI or S-TMSI of UE2), UE can not be directly straight by process described in Figure 16 Obtain UE2 3GPP-ID, it is necessary to the 3GPP-ID of UE2 is obtained using enhancing process described in Figure 22.

Figure 22 is the flow chart that neighbour's end message is obtained in neighbour's discovery procedure according to an embodiment of the present invention, such as Figure 22 It is shown, in neighbour's discovery procedure, the process of the information (UE ID, UE IP) of neighbour's terminal is obtained, which is based on Figure 16 The process has following enhancing:

1) ProSe registration process:

It, can simultaneously by the IP of UE1 when UE1 initiates ProSe registration process to ProSe Server in step S2202 Location (in attaching process UE assigned IP address), UE1 3GPP-ID(such as S-TMSI or IMSI) be sent to ProSe Server.To which ProSe Server can store IP, 3GPP-ID(such as S-TMSI, IMSI of UE), so as to other subsequent UE It requests to return to request UE when buddy list.

It, can be simultaneously by the IP address of UE1 (in attaching process when UE1 request distributes ProSe-ID in step S2206 UE assigned IP address), the 3GPP-ID(such as S-TMSI or IMSI of UE1) be sent to ProSe Server.

In step S2210, when ProSe Server returns to the ProSe-ID distributed by UE1, while the good of UE1 is returned to Friendly list returns to IP, 3GPP-ID, App-ID, ProSe-ID of good friend to each good friend.

In this step, when ProSe Server is that UE distributes ProSe-ID, ProSe-ID can be distributed in network-wide basis. See also the position of UE, ProSe-ID only is distributed for UE in a regional area (combinations of one or more TA/Cell), So that the length of ProSe-ID is smaller.

ProSe Server can obtain the current location information (TA, Cell) of UE from network, or in step S2202, UE The location information (TA, Cell) of itself is provided simultaneously, distributes ProSe-ID according to location information for ProSe Server.

In step S2211, IP, 3GPP-ID, App-ID, ProSe-ID of UE are stored in mapping table by EUTRAN/EPC.

It in step S2212, returns in the ProSe-ID assignment response of UE1, the buddy list comprising UE1, to each Good friend returns to IP, 3GPP-ID, App-ID, ProSe-ID of good friend.

To can mutually know IP, 3GPP-ID of other side between UE1, UE2 according to the process of above-mentioned figure S2201-S2213 (such as S-TMSI, IMSI), App-ID, ProSe-ID；

2) ProSe discovery procedure:

It is consistent with ProSe discovery procedure described in Figure 16, it is distinguished, after UE1 detects the ProSe-ID of UE2, According to the buddy list info (IP, 3GPP-ID, App-ID, ProSe-ID of UE) saved on UE1, can obtain UE2 IP, 3GPP-ID, it is subsequent to can be used to send the PDCP data packet for carrying ProSe data.

In process described in Figure 22, UE is only by UE's when executing ProSe registration or request ProSe-ID distribution IP, 3GPP-ID notify to give ProSe Server.However, the IP of UE may change, the 3GPP-ID of UE may also can become Change (dynamic of such as S-TMSI reassigns process), after IP, 3GPP-ID variation of UE, UE should re-initiate ProSe and register Journey or request ProSe-ID assigning process, to update IP, 3GPP-ID of the UE saved on ProSe Server.When UE updates After its IP, 3GPP-ID, ProSe Server should send to the good friend of UE and notify, inform that IP, 3GPP-ID of the UE has changed.

But due to the 3GPP-ID(S-TMSI or IMSI of UE) belong to sensitive data, and in the process shown in Figure 22, UE notifies the 3GPP-ID of itself to give ProSe Server, increases the risk of exposed 3GPP-ID.

In order to avoid the risk of the 3GPP-ID of exposure UE, UE can be used when sending the PDCP packet for carrying ProSe data The ProSe-ID of target side UE is as Target UE ID.To which in the process shown in Figure 22, UE is not necessarily to ProSe Server notifies its 3GPP-ID.

There is two ways to realize and carry ProSe data in PDCP data packet:

1) it is filled in PDCP data packet using the ProSe-ID of UE and receives Termination ID, source terminal ID.In this way in Figure 22 Shown in process, require nothing more than the IP address that UE reports UE to ProSe Server；

2) 3GPP-ID(S-TMSI of UE or IMSI is used in PDCP data packet) Termination ID, source terminal are received to fill ID.In this way in the process shown in Figure 22, it is desirable that UE reports IP, 3GPP-ID of UE to ProSe Server simultaneously.But this side Formula has the risk of the 3GPP-ID of exposure UE.

Embodiment five, the method for obtaining neighbour's IP address of terminal

In neighbour's communication data packets routing forwarding process shown in earlier figures 20,21, sends terminal needs and received After the ID of terminal, IP address, which is just able to achieve.

When transmission terminal (UE1) only obtains the ID(such as ProSe-ID of reception terminal (UE2)), i.e., with not knowing the IP of UE2 When location, however it remains a kind of possible method uses process described in Figure 20,21.

It in a local network, should when sending an IP data packet to a limited broadcast address (255.255.255.255) IP data packet will be sent on machine all in local area network, and the machine for receiving the IP broadcast packet, which can get, sends IP broadcast packet Machine IP, and IP data packet can be responded.Similarly method can be applied in the process shown in Figure 20,21, real It now sends terminal and receives the purpose that terminal mutually detects IP address.

Figure 23 is the method flow diagram according to the preferred embodiment of the invention that IP address is mutually detected using IP broadcast, is such as schemed Shown in 23, which includes the following steps:

Step S2301, UE1 still construct PDCP data packet above-mentioned, i.e., carry ProSe in PDCP data packet header and refer to Show, the ID of UE2.In the PDCP data packet, UE1 can construct an IP broadcast data packet, for example use limited broadcast address (255.255.255.255).Router (such as PGW) will not forward the IP broadcast of the carrying limited broadcast address, but according to this The IP broadcast can be transmitted and received terminal (UE2) by preceding method in embodiment, eNodeB.

Step S2302~S2303, according to process described in Figure 20,21, which is sent to UE2 by eNodeB；

Step S2304, the IP broadcast for the carrying limited broadcast address that response UE1 is sent if UE2 has the ability, UE2 can be with: Record the IP of the ID and UE1 of UE1, i.e. transmitting terminal IP address in IP broadcast packet；

In general, transmitting terminal UE1 and receiving end UE2 should be communicated using identical port, such as: UE1 is sent out on port 2445 IP broadcast is sent, then UE2 should monitor IP broadcast data on port 2445.The data body portion of IP broadcast, can carry any answer Use layer data.

If the identical method of UE1 can be used in step S2305~S2307, UE2, a similar PDCP data are returned to UE2 Packet, the PDCP data packet header carry the ID of ProSe instruction, UE1, and data body portion uses limited broadcast comprising what UE2 was sent The IP broadcast data packet of address.

Alternatively, the IP of UE1 can be used in UE2, point-to-point IP data packet is sent to UE1, without sending IP broadcast data packet, The IP data packet that UE2 is sent still is carried in the PDCP data packet for communicating (ProSe) labeled as neighbour.

Step S2308, the IP broadcast for the carrying limited broadcast address that response UE1 is sent if UE1 has the ability, UE1 can be with: Record the IP of the ID and UE2 of UE2, i.e. transmitting terminal IP address in IP broadcast packet；

To which using the program, UE1 and UE2 can mutually send the PDCP data packet for carrying IP broadcast data packet, pass through It crosses after eNodeB is routed to receiving end, UE1, UE2 can mutually detect the IP address of opposite end.To which UE1, UE2 can be by earlier figures 20, the 21 normal PDCP data packet for sending carrying ProSe data realizes neighbour's communication.

Obviously, those skilled in the art should be understood that each module of the above invention or each step can be with general Computing device realize that they can be concentrated on a single computing device, or be distributed in multiple computing devices and formed Network on, optionally, they can be realized with the program code that computing device can perform, it is thus possible to which they are stored It is performed by computing device in the storage device, and in some cases, it can be to be different from shown in sequence execution herein Out or description the step of, perhaps they are fabricated to each integrated circuit modules or by them multiple modules or Step is fabricated to single integrated circuit module to realize.In this way, the present invention is not limited to any specific hardware and softwares to combine.

The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.

Claims

1. a kind of packet data polymerized agreement PDCP data package processing method characterized by comprising

Construct the PDCP data packet, wherein the header field part of the PDCP data packet include neighbour communicate instruction information and Receive the identification information of terminal；

Neighbour's communication is carried out according to the PDCP data packet of construction and the reception terminal；

It wherein, further include obtaining the reception terminal at least one in the following manner before constructing the PDCP data packet Identification information and it is described receive terminal IP address: from neighbour's communication server obtain it is described receive terminal identification information and The IP address for receiving terminal；In the case where only getting the identification information for receiving terminal, by being connect described in reception The mode for receiving the IP broadcast data packet for the carrying limited broadcast address that terminal is sent obtains the IP address for receiving terminal.

2. the method according to claim 1, wherein the header field part of the PDCP data packet further includes having transmission The identification information of terminal.

3. the method according to claim 1, wherein eventually according to the PDCP data packet of construction and the reception End carries out neighbour's communication

The PDCP data packet is sent to base station, wherein the PDCP data packet is sent to the reception by the base station Terminal.

4. according to the method described in claim 3, it is characterized in that, by the PDCP data packet be sent to the base station it Before, further include the carrying determined at least one in the following manner for sending the PDCP data packet:

According to the service quality of carrying, the carrying for sending the PDCP data packet is determined；

Item number according to the carrying for supporting neighbour's communication determines the carrying for sending the PDCP data packet；

Default bearer is determined as to be used to send the carrying of the PDCP data packet.

5. method according to claim 1 to 4, which is characterized in that the identification information for receiving terminal, or Person, the identification information for sending terminal is at least one of:

Neighbour's communication server is the unique identification information of the whole network of terminal UE distribution；

Third generation mobile Partnership Program 3GPP network is the identification information of terminal UE distribution；

Neighbour's communication server is according to neighbour's communications identification that the position of the UE is in the regional area of UE distribution Information；

The Universal Terrestrial wireless access network EUTRAN of evolution is in the regional area of UE distribution according to the position of the UE Temporary identifier information；

Evolution packet switching center EPC is according to the temporary identifier letter that the position of the UE is in the regional area of UE distribution Breath.

6. a kind of packet data polymerized agreement PDCP data package processing method characterized by comprising

It receives and sends the PDCP data packet that terminal is sent, wherein the header field part of the PDCP data packet includes neighbour's communication It indicates information and receives the identification information of terminal；Wherein, the data packet be the transmission terminal in the following way at least One of get it is described receive terminal identification information and it is described receive terminal IP address after construct: from neighbour's communication garment Business device obtains the identification information for receiving terminal and the IP address for receiving terminal；Only getting the reception terminal In the case where identification information, by the side for receiving the IP broadcast data packet for receiving the carrying limited broadcast address that terminal is sent Formula obtains the IP address for receiving terminal；

The PDCP data packet is sent to the reception terminal by the header field part according to the PDCP data packet.

7. according to the method described in claim 6, it is characterized in that, the header field part of the PDCP data packet further include have it is described Send the identification information of terminal.

8. according to the method described in claim 6, it is characterized in that, will be described in the header field part according to the PDCP data packet PDCP data packet is sent to before the reception terminal, further includes:

The identification information for sending terminal is filled in the header field part of the PDCP data packet.

9. according to the method described in claim 6, it is characterized in that, will be described in the header field part according to the PDCP data packet PDCP data packet is sent to before the reception terminal, further includes being determined at least one in the following manner for by the PDCP Data packet is sent to the carrying for receiving terminal:

Service quality according to carrying is determined for the PDCP data packet to be sent to the carrying for receiving terminal；

Item number according to the carrying for supporting neighbour's communication is determined for the PDCP data packet to be sent to the reception terminal Carrying；

Default bearer is determined as being used for the PDCP data packet is sent to the carrying for receiving terminal.

10. according to the method described in claim 6, it is characterized in that, the header field part according to the PDCP data packet will be described PDCP data packet is sent to the reception terminal

According to the identification information for receiving terminal, judge whether the reception terminal and the transmission terminal belong to the same base It stands；

In the case where the judgment result is yes, the PDCP data packet is transmitted directly to the reception terminal；And/or

If the determination result is NO, the IP data packet that will be extracted from the PDCP data packet, to gateway SGW/ Common data gateway PGW sends the IP data packet, is ultimately sent to the reception terminal.

11. a kind of packet data polymerized agreement PDCP data packet processing characterized by comprising

Constructing module, for constructing the PDCP data packet, wherein the header field part of the PDCP data packet includes that neighbour is logical News instruction information and the identification information for receiving terminal；

Communication module, for the PDCP data packet and reception terminal progress neighbour's communication according to construction；

Module is obtained, for obtaining the identification information for receiving terminal and receptions end at least one in the following manner The IP address at end: the identification information for receiving terminal and the IP address for receiving terminal are obtained from neighbour's communication server； It is limited wide by receiving the carrying for receiving terminal transmission in the case where only getting the identification information for receiving terminal The mode for broadcasting the IP broadcast data packet of address obtains the IP address for receiving terminal.

12. device according to claim 11, which is characterized in that the communication module includes:

First transmission unit, for the PDCP data packet to be sent to base station, wherein by the base station by the PDCP data Packet is sent to the reception terminal.

13. device according to claim 12, which is characterized in that further include determination unit, for by the PDCP number It further include determining at least one in the following manner for sending the PDCP data packet before being sent to the base station according to packet Carrying:

Service quality according to carrying determines the carrying for sending the PDCP data packet；

14. a kind of terminal, which is characterized in that including device described in any one of claim 11 to 13.

15. a kind of packet data polymerized agreement PDCP data packet processing characterized by comprising

Receiving module, for receiving the PDCP data packet for sending terminal and sending, wherein wrap the header field part of the PDCP data packet Include neighbour communicate instruction information and receive terminal identification information, wherein the data packet be the transmission terminal according to At least one of under type get it is described receive terminal identification information and it is described receive terminal IP address after construct: The identification information for receiving terminal and the IP address for receiving terminal are obtained from neighbour's communication server；Only getting institute It is wide by receiving the IP for receiving the carrying limited broadcast address that terminal is sent in the case where stating the identification information for receiving terminal The mode of unicast packets obtains the IP address for receiving terminal；

The PDCP data packet is sent to the reception eventually for the header field part according to the PDCP data packet by sending module End.

16. device according to claim 15, which is characterized in that it further include filling in module,

It is described to fill in module, it is described for being sent to the PDCP data packet in the header field part according to the PDCP data packet Before receiving terminal, the identification information for sending terminal is filled in the header field part of the PDCP data packet.

17. device according to claim 15, which is characterized in that further include determining module, for according to the PDCP Before the PDCP data packet is sent to the reception terminal by the header field part of data packet, at least one in the following manner really Determine for the PDCP data packet to be sent to the carrying for receiving terminal:

18. device according to claim 15, which is characterized in that the sending module includes:

Judging unit, for judging that the reception terminal is with the transmission terminal according to the identification information for receiving terminal It is no to belong to the same base station；

Second transmission unit, for the judging result of above-mentioned judging unit be in the case where, the PDCP data packet is straight The reception terminal is given in sending and receiving；And/or

Third transmission unit, for the judging result of above-mentioned judging unit be it is no in the case where, will be from the PDCP data packet The IP data packet of middle extraction is ultimately sent to the reception terminal.

19. a kind of base station, which is characterized in that including device described in any one of claim 15 to 18.

20. a kind of communication system, which is characterized in that including the terminal described in claim 14 and the base described in claim 19 It stands.