CN104427572A

CN104427572A - Packet data convergence protocol data packet processing method, device and communication system

Info

Publication number: CN104427572A
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: 2015-03-18
Anticipated expiration: 2033-09-10
Also published as: CN104427572B; WO2015035915A1

Abstract

The invention provides a packet data convergence protocol (PDCP) data packet processing method, a device, a terminal, a base station and a communication system. The method comprises the following steps: constructing a PDCP data packet, wherein the head domain part of the PDCP data packet comprises near-neighbor communication indication information and identification information of a receiving terminal; and performing near-neighbor communication with the receiving terminal according to the constructed PDCP data packet. Through the adoption of the method provided by the invention, the problems that a near-neighbor communication path cannot be switched to a normal EPC (evolved packet core) communication path in a correlation technology and the existing architecture and technological means cannot be used for legally monitoring the near-neighbor communication are solved, and then the effects of switching near-neighbor communication to the normal EPC communication path, and legally monitoring the near-neighbor communication can be realized.

Description

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

Technical field

The present invention relates to the communications field, in particular to the packet data polymerized agreement of one (Packet Data ConvergenceProtocol is called for short PDCP) data package processing method, device, terminal, base station and communication system.

Background technology

Third generation partner program (3rd Generation Partnership Project, referred to as 3GPP) grouping system (the Evolved Packet System of evolution, referred to as EPS) by universal mobile telecommunications system land radio access web (the EvolvedUniversal Terrestrial Radio Access Network of evolution, referred to as E-UTRAN), mobile management unit (MobilityManagement Entity, referred to as MME), gateway (Serving Gateway, S-GW), grouped data network gateway (Packet Data Network Gateway, referred to as P-GW or PDN GW), home subscriber server (HomeSubscriber Server, referred to as HSS), authentication and authorization charging (the Authentication of 3GPP, Authorization andAccounting, referred to as AAA) server.

Long Term Evolution (Long Term Evolution, referred to as LTE) technology becomes the one preferred technique of following public safety network.Public safety network and trunking communication propose new demand to Long Term Evolution (Long Term Evolution, referred to as LTE) technology, and one of them supports neighbour's communication (Proximity Service Communication is called for short ProSe communication).In hereafter describing, " ProSe communication " is equivalent to " neighbour's communication ", or claims " neighbour's communication ".

So-called neighbour's communication refers to two or more mobile phone, when their mutual distance relatively time, terminal room can directly find and initiate communication, and communication directly can not be carried out by base station, comprises data communication and speech communication.Even if in the region not having base station coverage, mobile phone also can utilize neighbour's communication technology directly to carry out data or voice communication.At present, 3GPP studying neighbour communication need summation scheme.

Fig. 1 is the frame of reference composition of neighbour's communication in correlation technique, and as shown in Figure 1, add new direct interface PC5 between UE and UE, PC5 interface is the air interface between UE and UE.ProSe functional entity is the auxiliary core net functional entity supporting neighbour's communication, this functional entity assists to carry out the foundation etc. finding, assist PC5 interface between UE, and this functional entity is also responsible for neighbour and is communicated the registration of UE, certification, mandate, the discovery of neighbour's Correspondent Node, the foundation of neighbour's communication link (i.e. PC5 link) or switching etc.By PC4 interface between ProSe functional entity and existing evolution packet switching center (Evolved Packet Core, referred to as EPC) (as MME).Meanwhile, ProSe functional entity also with application server by PC2 interface, this interface is used for obtaining application related information from application server, and provides neighbour communication service for application server.

Neighbour's communication not only can meet without the demand of emergency communication when covering between mobile phone, simultaneously also for the network of operator provide a kind of newly may and opportunity.Such as, utilize neighbour to communicate and carry out advertising business or utilize neighbour to communicate by data flow from core net or even from base station unloading, thus promote network capacity etc.

Neighbour's communication provides a kind of and normal EUTRAN/EPC communication difference communication mode, and Fig. 2 is the difference schematic diagram of neighbour's communication and normal communication in correlation technique, as shown in Figure 2.In normal EUTRAN/EPC communication, no matter be UE and internetwork communication data (the RRC signaling between UE and eNodeB, the NAS signaling between UE and MME), or the communication data (the IP communication as between UE1 and UE2) between UE and UE, all needs through eNodeB.And the neighbour between UE with UE communicates, usual data without eNodeB, i.e. the content of the not detectable ProSe communication data packet of eNodeB.

In EUTRAN/EPC communication, between UE and eNodeB, exchange RRC signaling, NAS signaling, IP data by packet data polymerized agreement (Packet DataConvergence Protocol is called for short PDCP).PDCP packet has two kinds of primary format: signaling plane PDCP packet, user face PDCP packet.Wherein, signaling plane PDCP packet is in order to carry RRC signaling, NAS signaling, user face PDCP packet is in order to carry IP packet, different PDCP packets uses different radio channel resources, as signaling plane PDCP packet uses Signaling Radio Bearer (Signalling RadioBearer, be called for short SRB) resource, and user face PDCP packet uses user plane radio bearers (Data Radio Bearer is called for short DRB) resource.After eNodeB receives the PDCP packet of UE transmission, judge it is signaling message according to PDCP type of data packet, or IP data.If signaling message, eNodeB judges it is RRC signaling further, or NAS signaling, if NAS signaling then eNodeB be transmitted to MME process.If IP data, IP packet is contained in user face GPRS Tunnel Protocol bag (GTP-U) and sends to SGW by eNodeB.

And in neighbour's communication, direct-connected air interface (i.e. PC5 interface in Fig. 1) is used to transmit data between UE, the configuration Network Based of this direct-connected air interface, as being linked in the process of network at UE, eNodeB is this UE configuration logic channel, in order to direct-connected air interface, or eNodeB is configured for the logic channel resource of ProSe communication in system broadcast message.For this ProSe logic channel, eNodeB cannot transmitted the wherein user data of direct detection.

Communication path is switched, in traditional E UTRAN/EPC network, communication switches to be carried out based on radio bearer, core net carrying, be switched to target BS from source base station by radio bearer, core net carrying, thus achieve the object user face data path of UE being switched to another base station from a base station.But under neighbour's communication, the ProSe communication path between UE is based on direct-connected air interface, and this direct-connected air interface is not based on radio bearer, the core net carrying of UE.Thus, conventionally, ProSe communication cannot be switched to EUTRAN/EPC network.

For Lawful Interception, in traditional 3GPP network, Lawful Interception is by public data network gateway device (PDN GW, be called for short PGW) will communication data packet (voice or the data) copy of user be listened, and send to LI Server, then be supplied to by LI Server the government safety department that public security department etc. wishes to intercept this user communication data.Wherein, all communication datas of user all flow through PDN GW, therefore, when needing the communication data of intercepting certain user, only need to notify that the gateway device accompanying by this user carries out intercepting.But for neighbour's communication, communication data directly transmits at terminal room, usually without the network (without PDN GW, eNodeB) of operator, therefore, according to the technical scheme in correlation technique, cannot to communicate enforcement Lawful Interception to neighbour.

Therefore, in the related, neighbour's communication path cannot be switched to normal EPC communication path, also existing framework and technological means cannot be used to realize the Lawful Interception communicated to neighbour.

Summary of the invention

The invention provides a kind of packet data polymerized agreement PDCP data package processing method, device, terminal, base station and communication system, neighbour's communication path cannot be switched to normal EPC communication path at least to solve in correlation technique, also existing framework cannot be used to realize the problem to the Lawful Interception that neighbour communicates with technological means.

According to an aspect of the present invention, provide a kind of packet data polymerized agreement PDCP data package processing method, comprise: construct described PDCP packet, wherein, the header field part of described PDCP packet includes the identification information of neighbour's communication indication information and receiving terminal; Neighbour's communication is carried out according to the described PDCP packet constructed and described receiving terminal.

Preferably, the header field part of described PDCP packet also includes the identification information of transmitting terminal.

Preferably, before the described PDCP packet of structure, also comprise and one of at least obtain the identification information of described receiving terminal and the IP address of described receiving terminal in the following manner: obtain the identification information of described receiving terminal and the IP address of described receiving terminal from neighbour's communication server; When only getting the identification information of described receiving terminal, the mode of carrying the IP broadcast packet of limited broadcast address sent by receiving described receiving terminal obtains the IP address of described receiving terminal.

Preferably, carry out neighbour's communication according to the described PDCP packet constructed and described receiving terminal and comprise: by described PDCP Packet Generation to base station, wherein, give described receiving terminal by described base station by described PDCP Packet Generation.

Preferably, described PDCP Packet Generation is being given before described base station, also comprising the carrying one of at least determining sending described PDCP packet in the following manner: according to the service quality of carrying, determine the carrying sending described PDCP packet; Number according to the carrying supporting neighbour's communication determines the carrying sending described PDCP packet; Default bearer is defined as the carrying for sending described PDCP packet.

Preferably, the identification information of described receiving terminal, or, the identification information of described transmitting terminal be following one of at least: neighbour's communication server is the unique identification information of the whole network that terminal UE is distributed; Third generation mobile Partnership Program 3GPP network is the identification information that described terminal UE is distributed; Described neighbour's communication server is the neighbour's communications identification information in the regional area that distributes of described UE according to the position of described UE; The Universal Terrestrial wireless access network EUTRAN of evolution is the temporary mark information in the regional area that distributes of described UE according to the position of described UE; Evolution packet switching center EPC is the temporary mark information in the regional area that distributes of described UE according to the position of described UE.

According to a further aspect in the invention, provide a kind of packet data polymerized agreement PDCP data package processing method, comprise: receive the PDCP packet that transmitting terminal sends, wherein, the header field part of described PDCP packet includes the identification information of neighbour's communication indication information and receiving terminal; Described PDCP Packet Generation is given described receiving terminal by the header field part according to described PDCP packet.

Preferably, the header field part of described PDCP packet also includes the identification information of described transmitting terminal.

Preferably, before described PDCP Packet Generation is given described receiving terminal by the header field part according to described PDCP packet, also comprise: the identification information filling in described transmitting terminal in the header field part of described PDCP packet.

Preferably, in the header field part according to described PDCP packet, described PDCP Packet Generation is given before described receiving terminal, also comprise and one of at least to determine described PDCP Packet Generation to the carrying of described receiving terminal in the following manner: the service quality according to carrying determines described PDCP Packet Generation to the carrying of described receiving terminal; Number according to the carrying supporting neighbour's communication determines described PDCP Packet Generation to the carrying of described receiving terminal; Default bearer is defined as by described PDCP Packet Generation to the carrying of described receiving terminal.

Preferably, described PDCP Packet Generation comprises to described receiving terminal by the header field part according to described PDCP packet: according to the identification information of described receiving terminal, judge whether described receiving terminal and described transmitting terminal belong to same base station; When judged result is for being, described PDCP packet is directly sent to described receiving terminal; And/or, when judged result is no, by the IP packet extracted from described PDCP packet, send described IP packet to gateway SGW/ common data gateway PGW, finally send to described receiving terminal.

According to also one side of the present invention, provide a kind of packet data polymerized agreement PDCP data packet processing, comprising: constructing module, for constructing described PDCP packet, wherein, the header field part of described PDCP packet includes the identification information of neighbour's communication indication information and receiving terminal; Communication module, for carrying out neighbour's communication according to the described PDCP packet constructed and described receiving terminal.

Preferably, this device also comprises acquisition module, and described acquisition module is used for one of at least obtaining the identification information of described receiving terminal and the IP address of described receiving terminal in the following manner: obtain the identification information of described receiving terminal and the IP address of described receiving terminal from neighbour's communication server; When only getting the identification information of described receiving terminal, the mode of carrying the IP broadcast packet of limited broadcast address sent by receiving described receiving terminal obtains the IP address of described receiving terminal.

Preferably, described communication module comprises: the first transmitting element, for by described PDCP Packet Generation to base station, wherein, by described base station by described PDCP Packet Generation give described receiving terminal.

Preferably, this device also comprises determining unit, for being given before described base station by described PDCP Packet Generation, also comprising the carrying one of at least determining sending described PDCP packet in the following manner: the service quality according to carrying determines sending the carrying of described PDCP packet; Number according to the carrying supporting neighbour's communication determines the carrying sending described PDCP packet; Default bearer is defined as the carrying for sending described PDCP packet.

According to also one side of the present invention, provide a kind of terminal, comprise the device described in above-mentioned any one.

According to the one side again of invention, provide a kind of packet data polymerized agreement PDCP data packet processing, comprise: receiver module, for receiving the PDCP packet that transmitting terminal sends, wherein, the header field part of described PDCP packet includes the identification information of neighbour's communication indication information and receiving terminal; Sending module, gives described receiving terminal for the header field part according to described PDCP packet by described PDCP Packet Generation.

Preferably, this device also comprises fills in module, describedly fill in module, before giving described receiving terminal in the header field part according to described PDCP packet by described PDCP Packet Generation, fill in the identification information of described transmitting terminal in the header field part of described PDCP packet.

Preferably, this device also comprises determination module, for described PDCP Packet Generation being given before described receiving terminal in the header field part according to described PDCP packet, one of at least to determine described PDCP Packet Generation to the carrying of described receiving terminal in the following manner: the service quality according to carrying determines described PDCP Packet Generation to the carrying of described receiving terminal; Number according to the carrying supporting neighbour's communication determines described PDCP Packet Generation to the carrying of described receiving terminal; Default bearer is defined as by described PDCP Packet Generation to the carrying of described receiving terminal.

Preferably, described sending module comprises: judging unit, for the identification information according to described receiving terminal, judges whether described receiving terminal and described transmitting terminal belong to same base station; Second transmitting element, for when the judged result of above-mentioned judging unit is for being, directly sends to described receiving terminal by described PDCP packet; And/or the 3rd transmitting element, for when the judged result of above-mentioned judging unit is no, by the IP packet extracted from described PDCP packet, finally sends to described receiving terminal.

According to another aspect of the invention, provide a kind of base station, it is characterized in that, comprise the device described in above-mentioned any one.

According to also one side of the present invention, provide a kind of communication system, comprise terminal described above and base station described above.

By the present invention, adopt the described PDCP packet of structure, wherein, the header field part of described PDCP packet includes the identification information of neighbour's communication indication information and receiving terminal; Neighbour's communication is carried out according to the described PDCP packet constructed and described receiving terminal, solve in correlation technique and neighbour's communication path cannot be switched to normal EPC communication path, also existing framework cannot be used to realize the problem to the Lawful Interception that neighbour communicates with technological means, and then neighbour's communication path can be realized to be switched to normal EPC communication path, also can realize the effect of neighbour's communication being carried out to Lawful Interception.

Accompanying drawing explanation

Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:

Fig. 1 is the frame of reference composition of neighbour's communication in correlation technique;

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

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

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

Fig. 5 is the structured flowchart of the packet data polymerized agreement PDCP data packet processing one according to the embodiment of the present invention;

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

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

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

Fig. 9 is the structured flowchart of the terminal according to the embodiment of the present invention;

Figure 10 is the structured flowchart of the packet data polymerized agreement PDCP data packet processing two according to the embodiment of the present invention;

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

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

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

Figure 14 is the structured flowchart of the base station according to the embodiment of the present invention;

Figure 15 is the structured flowchart of the communication system according to the embodiment of the present invention;

Figure 16 is that in correlation technique, neighbour finds and communication Establishing process figure;

Figure 17 is the form schematic diagram of user face PDCP packet in correlation technique;

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

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

Figure 20 is that base station local routing carries the flow chart of the PDCP packet of ProSe data according to the preferred embodiment of the invention;

Figure 21 be according to the preferred embodiment of the invention base station upwards route carry the flow chart of the PDCP packet of ProSe communication data;

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

Figure 23 is the method flow diagram utilizing IP broadcast mutually to detect IP address according to the preferred embodiment of the invention.

Embodiment

Hereinafter also describe the present invention in detail with reference to accompanying drawing in conjunction with the embodiments.It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.

Provide a kind of packet data polymerized agreement PDCP data package processing method in the present embodiment, Fig. 3 is the flow chart of the packet data polymerized agreement PDCP data package processing method one according to the embodiment of the present invention, and as shown in Figure 3, this flow process comprises the steps:

Step S302, structure PDCP packet, wherein, the header field part of this PDCP packet includes the identification information of neighbour's communication indication information and receiving terminal;

Step S304, carries out neighbour's communication according to the PDCP packet constructed and receiving terminal.

Pass through above-mentioned steps, the PDCP packet carrying out neighbour's communication is improved, the identification information of neighbour's communication indication information and receiving terminal is carried in PDCP packet, the packet achieving neighbour's communication is transmitted to target terminal on the level of base station, above-mentioned information is not carried relative to the PDCP packet for neighbour's communication in correlation technique, neighbour's communication path cannot be realized and be switched to normal EPC communication path, and the problem of neighbour's communication being carried out to Lawful Interception cannot be realized, base station can effectively realize neighbour's communication path to be switched to normal EPC communication path according to the above-mentioned information entrained by above-mentioned PDCP packet, also can realize carrying out Lawful Interception to neighbour's communication.

Wherein, the header field part of PDCP packet also includes the identification information of transmitting terminal, by such process, under receiving terminal does not need when receiving the PDCP packet that transmitting terminal sends the prerequisite untiing IP packet, just can know the transmitting terminal sending this PDCP packet, be convenient to receiving terminal Quick-return IP data.

Before structure PDCP packet, the mode obtained for the identification information of receiving terminal and the IP address of receiving terminal that construct this PDCP packet can be a lot, such as, one of at least can obtain the identification information of receiving terminal and the IP address of receiving terminal in the following manner: obtain the identification information of receiving terminal and the IP address of receiving terminal from neighbour's communication server, the IP address of identification information and receiving terminal that this neighbour's communication server obtains this receiving terminal can in multiple processes before, such as, the identification information of receiving terminal and the IP address of receiving terminal can be obtained in the process of neighbour's communication registration, also the IP address of identification information and the receiving terminal obtaining this receiving terminal in the process of distribution can be identified by the neighbour when the registration of neighbour's communication, certainly, can also by obtaining the identification information of above-mentioned receiving terminal and the IP address of receiving terminal in the process of acquisition buddy list in above process.Again such as, when only getting the identification information of receiving terminal, the mode of carrying the IP broadcast packet of limited broadcast address sent by receiving terminal obtains the IP address of receiving terminal.Namely the IP packet by carrying limited broadcast address detects IP address mutually.

Carry out neighbour's communication comprise according to the PDCP packet of structure and receiving terminal: by PDCP Packet Generation to base station, wherein, by base station by PDCP Packet Generation to receiving terminal.

Preferably, by PDCP Packet Generation to base station before, when determining the carrying sending PDCP packet, multiple processing mode can be adopted, such as, can one of at least determine the carrying sending PDCP packet in the following manner: according to the service quality of carrying, determine the carrying sending PDCP packet; Number according to the carrying supporting neighbour's communication determines the carrying sending PDCP packet, such as, when there is the carrying of many support neighbours communication, support to select a carrying be defined as sending PDCP packet the carrying of neighbour's communication from these many, and when only there is the carrying of support neighbour communication, this only depositing can be supported that the carrying of neighbour's communication be defined as the carrying for sending PDCP packet; Default bearer is defined as the carrying for sending PDCP packet.It should be noted that, the above-mentioned carrying determining sending PDCP packet also can be combined with each other, such as, when there is the carrying of many support neighbours communication, the carrying sending PDCP packet can be determined according to the service quality of carrying, and when only there is the carrying of support neighbour communication, also directly can adopt and determining that default bearer is the carrying for sending PDCP packet.Therefore, the carrying determining sending PDCP packet can be determined according to concrete condition, also can select carrying according to concrete tendency of selecting.

It should be noted that, the identification information of receiving terminal, or, the identification information of transmitting terminal can for following one of at least: neighbour's communication server is the unique identification information of the whole network that terminal UE is distributed; Third generation mobile Partnership Program 3GPP network is the identification information that terminal UE is distributed; Neighbour's communication server is the neighbour's communications identification information in the regional area that distributes of UE according to the position of UE; The Universal Terrestrial wireless access network EUTRAN of evolution is the temporary mark information in the regional area that distributes of UE according to the position of UE; Evolution packet switching center EPC is the temporary mark information in the regional area that distributes of UE according to the position of UE.

In the present embodiment, additionally provide a kind of packet data polymerized agreement PDCP data package processing method, Fig. 4 is the flow chart of the packet data polymerized agreement PDCP data package processing method two according to the embodiment of the present invention, and as shown in Figure 4, this flow process comprises the steps:

Step S402, receive the PDCP packet that transmitting terminal sends, wherein, the header field part of this PDCP packet includes the identification information of neighbour's communication indication information and receiving terminal;

Step S404, according to the header field part of PDCP packet by PDCP Packet Generation to receiving terminal.

More preferably, the header field part of PDCP packet also includes the identification information of transmitting terminal.

Wherein, according to PDCP packet header field part by PDCP Packet Generation to receiving terminal before, also comprise: the identification information filling in transmitting terminal in the header field part of PDCP packet.When the header field part of PDCP packet only comprises a terminal iidentification instruction, in the PDCP packet received to receiving terminal, fill the identification information of transmitting terminal.And when the header field part of above-mentioned PDCP packet exists two terminal iidentification instructions, when the identification information of receiving terminal is not only filled and the mark of transmitting terminal do not filled by transmitting terminal, filled in the identification information of above-mentioned transmitting terminal in the header field part of PDCP packet by base station.

Same, according to PDCP packet header field part by PDCP Packet Generation to receiving terminal before, determine institute PDCP Packet Generation also can adopt multiple processing mode to the carrying of receiving terminal, such as, can one of at least to determine PDCP Packet Generation to the carrying of receiving terminal in the following manner: the service quality according to carrying determines PDCP Packet Generation to the carrying of receiving terminal; Number according to the carrying supporting neighbour's communication determines PDCP Packet Generation to the carrying of receiving terminal; Default bearer is defined as by PDCP Packet Generation to the carrying of receiving terminal.

Preferably, PDCP Packet Generation comprises to receiving terminal by the header field part according to PDCP packet: according to the identification information of receiving terminal, judge whether receiving terminal and transmitting terminal belong to same base station; When judged result is for being, PDCP packet is directly sent to receiving terminal; And/or, when judged result is no, by the IP packet extracted from PDCP packet, send IP packet to gateway SGW/ common data gateway PGW, finally send to receiving terminal.

Additionally provide a kind of packet data polymerized agreement PDCP data packet processing in the present embodiment, this device is used for realizing above-described embodiment and preferred implementation, has carried out repeating no more of explanation.As used below, term " module " can realize the software of predetermined function and/or the combination of hardware.Although the device described by following examples preferably realizes with software, hardware, or the realization of the combination of software and hardware also may and conceived.

Fig. 5 is the structured flowchart of the packet data polymerized agreement PDCP data packet processing one according to the embodiment of the present invention, and as shown in Figure 5, this device comprises constructing module 52 and communication module 54, is described below to this device.

Constructing module 52, for constructing PDCP packet, wherein, the header field part of this PDCP packet includes the identification information of neighbour's communication indication information and receiving terminal; Communication module 54, is connected to above-mentioned constructing module 52, for carrying out neighbour's communication according to the PDCP packet constructed and receiving terminal.

Fig. 6 is the preferred structure block diagram of the packet data polymerized agreement PDCP data packet processing one according to the embodiment of the present invention, as shown in Figure 6, this device, except comprising all modules shown in Fig. 5, also comprises acquisition module 62, is described below to this acquisition module 62.

Acquisition module 62, is connected to above-mentioned constructing module 52, for one of at least obtaining the identification information of receiving terminal and the IP address of receiving terminal in the following manner: obtain the identification information of receiving terminal and the IP address of receiving terminal from neighbour's communication server; When only getting the identification information of receiving terminal, the mode of carrying the IP broadcast packet of limited broadcast address sent by receiving receiving terminal obtains the IP address of receiving terminal.

Fig. 7 is the preferred structure block diagram one of communication module 54 in the packet data polymerized agreement PDCP data packet processing one according to the embodiment of the present invention, as shown in Figure 7, this communication module 54 comprises the first transmitting element 72, is described below to this first transmitting element 72.

First transmitting element 72, for by PDCP Packet Generation to base station, wherein, by base station by PDCP Packet Generation to receiving terminal.

Fig. 8 is the preferred structure block diagram two of communication module 54 in the packet data polymerized agreement PDCP data packet processing one according to the embodiment of the present invention, and as shown in Figure 8, this communication module 54 also comprises determining unit 82, is described below to this determining unit 82.

This determining unit 82, be connected to above-mentioned first transmitting element 72, for by PDCP Packet Generation to base station before, also comprise the carrying one of at least determining sending PDCP packet in the following manner: the service quality according to carrying determines sending the carrying of PDCP packet; Number according to the carrying supporting neighbour's communication determines the carrying sending PDCP packet; Default bearer is defined as the carrying for sending PDCP packet.

In the present embodiment, additionally provide a kind of terminal, Fig. 9 is the structured flowchart of the terminal according to the embodiment of the present invention, and as shown in Figure 9, this terminal 90 comprises the packet data polymerized agreement PDCP data packet processing 1 of above-mentioned any one.

In the present embodiment, additionally provide a kind of packet data polymerized agreement PDCP data packet processing, Figure 10 is the structured flowchart of the packet data polymerized agreement PDCP data packet processing two according to the embodiment of the present invention, as shown in Figure 10, this device comprises receiver module 102 and sending module 104, is described below to this device.

Receiver module 102, for receiving the PDCP packet that transmitting terminal sends, wherein, the header field part of PDCP packet includes the identification information of neighbour's communication indication information and receiving terminal; Sending module 104, is connected to above-mentioned receiver module 102, for the header field part according to PDCP packet by PDCP Packet Generation to receiving terminal.

Figure 11 is the preferred structure block diagram one of the packet data polymerized agreement PDCP data packet processing two according to the embodiment of the present invention, as shown in figure 11, this device, except comprising all modules shown in Figure 10, also comprises and fills in module 1102, below this is filled in module 1102 and is described.

This fills in module 1102, is connected to above-mentioned receiver module 102 and sending module 104, for according to PDCP packet header field part by PDCP Packet Generation to receiving terminal before, fill in the identification information of transmitting terminal in the header field part of PDCP packet.

Figure 12 is the preferred structure block diagram two of the packet data polymerized agreement PDCP data packet processing two according to the embodiment of the present invention, as shown in figure 12, this device, except comprising all modules shown in Figure 10, also comprises determination module 1202, is described below to this determination module 1202.

Determination module 1202, be connected to above-mentioned receiver module 102 and sending module 104, for according to PDCP packet header field part by PDCP Packet Generation to receiving terminal before, one of at least to determine PDCP Packet Generation to the carrying of receiving terminal in the following manner: the service quality according to carrying determines PDCP Packet Generation to the carrying of receiving terminal; Number according to the carrying supporting neighbour's communication determines PDCP Packet Generation to the carrying of receiving terminal; Default bearer is defined as by PDCP Packet Generation to the carrying of receiving terminal.

Figure 13 is the preferred structure block diagram of sending module 104 in the packet data polymerized agreement PDCP data packet processing two according to the embodiment of the present invention, as shown in figure 13, this sending module 104 comprises judging unit 1302, second transmitting element 1304 and/or the 3rd transmitting element 1306, is described below to this sending module 104.

Judging unit 1302, for the identification information according to receiving terminal, judges whether receiving terminal and transmitting terminal belong to same base station; Second transmitting element 1304, is connected to above-mentioned judging unit 1302, for when the judged result of above-mentioned judging unit is for being, PDCP packet is directly sent to receiving terminal; And/or the 3rd transmitting element 1306, is connected to above-mentioned judging unit 1302, for when the judged result of above-mentioned judging unit is no, by the IP packet extracted from PDCP packet, finally send to receiving terminal.

Figure 14 is the structured flowchart of the base station according to the embodiment of the present invention, and as shown in figure 14, this base station 140 comprises the packet data polymerized agreement PDCP data packet processing 2 142 of above-mentioned any one.

Figure 15 is the structured flowchart of the communication system according to the embodiment of the present invention, and as shown in figure 15, this communication system 150 comprises above-mentioned terminal 90 and above-mentioned base station 140, and wherein, this terminal 90 carries out neighbour's communication by base station 140.

The form of the new neighbour's communication data packets provided by above-described embodiment and preferred implementation, and the method for new neighbour's communication data packet route, by this new packet format and new method for routing, neighbour's communication data transfer both can be carried based on existing radio bearer, core net, and the packet realizing neighbour's communication is transmitted to object UE on eNodeB level.

Figure 16 is that in correlation technique, neighbour finds and communication Establishing process figure, and as shown in figure 16, in this flow process, source terminal finds neighbour's terminal at the auxiliary lower of network, and according to the Resourse Distribute of network, and direct-connected communication process initiated by receiving terminal, comprises the steps:

1) ProSe registration process:

Step S1601, UE1 request is linked in EUTRAN network, has adhered to and has been assigned with 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 use ProSe business, then refuse the ProSe registration request of UE1.

In ProSe registration process, ProSe Server is likely mutual with neighbour's communication application service device (ProSe ApplicationServer, referred to as ProSe AS), obtains the buddy list of UE1 and sends to UE1.Or UE1 directly obtains buddy list from ProSeAS.

Step S1603 ~ step S1604, UE2 is linked into network, then initiates ProSe registration process to Prose Server;

ProSe application (as QQ) that step S1605, UE1 run from terminal obtains buddy list;

Step S1606 ~ step S1607, UE1 initiates ProSe-ID to ProSe Server and distributes request, and this ProSe-ID distributes request and is sent to ProSe Server through EUTRAN/EPC;

Distribute in request at this ProSe-ID, carry the application layer user ID (UE1Application-ID) of UE1, the buddy list (UE1Friend-List) of UE1.Such as, the Application-ID of UE1 is: 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 that Application-ID distributes Prose-ID according to algorithm, and mapping is informed to ProSe AS.Or ProSe Server obtains the mapping of Application-ID and ProSe-ID of the buddy list of UE1 and UE1 from ProSe AS.

Such as, by Application-ID(and the zhangsan@qq.com of UE1) be mapped as ProSe-ID and be: GTER543 $ #2FSJ67DFSF.

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

In this step, in response to the request of aforementioned UE1, in ProSe-ID assignment response, comprise the ProSe-ID of UE1, and the ProSe-ID of the good friend of UE1.

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

ProSe-ID assignment response is transmitted to UE1 by step S1612, EUTRAN/EPC.Thus UE1 obtains self ProSe-ID and the ProSe-ID of good friend;

Step S1613, UE2 initiate ProSe-ID and distribute 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 not sequencing.

2) ProSe discovery procedure:

Step S1614, UE1 initiate neighbour's broadcast;

When UE is linked into EUTRAN network, the resource that namely network may find in order to ProSe UE configuration, as the particular broadcast channel for ProSe.On this channel, UE can broadcast self ProSe-ID, and other UE read this broadcast channel, and may detect which UE current is the neighbour that can be found.

Or UE directly cannot send information on ProSe broadcast channel, UE initiates neighbour's broadcast request to eNodeB, carries the ProSe-ID of self, and eNodeB is by step S1615, and this ProSe broadcast channel is initiated neighbour's broadcast.

Step S1615 ~ step S1616, eNodeB initiates neighbour's broadcast, the ProSe-ID of broadcast UE1;

According to the planning to ProSe broadcast channel, eNodeB can broadcast the ProSe-ID of multiple UE on the broadcast channel simultaneously.

Step S1617, UE2 monitor neighbour's broadcast, the ProSe-ID of detection UE1;

The ProSe-ID of UE1 sends to the ProSe of last time to apply by step S1618, UE2;

In this step, the ProSe-ID of UE1, according to the buddy list of UE1, is mapped to the Application-ID of UE1 by ProSe application.If UE1 is not in the buddy list of UE2, ProSe application may filter the ProSe-ID of UE1, is not shown to user.

Step S1619, UE2 initiate 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, there is not sequencing.

3) ProSe communication process:

Mutually detect after into neighbour's terminal at UE1 and UE2, 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, the ProSe communication request of eNodeB process UE, for UE distributes communication resources.If two UE of ProSe communication are not under same eNodeB, ProSe communication request processing procedure 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 Resourse Distribute of UE1;

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

Step S1624, EUTRAN/EPC return ProSe communication notifications to UE1, carry the response of UE2, ProSe Resourse Distribute;

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

Found and communication process of establishing by ProSe described in above-mentioned Figure 16, terminal room can Direct Communication, and packet does not need through base station, core net.

Figure 17 is the form schematic diagram of user face PDCP packet in correlation technique, as shown in figure 17, be different from signaling plane PDCP packet can run in Signaling Radio Bearer (SRB), user plane radio bearers (DRB), user face PDCP packet only can run in user plane radio bearers (DRB).

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

-D/C, user's face/signaling plane is designated as, and length is 1.D/C indicating bit represent this PDCP packet in order to carrier signaling face data (as RRC/NAS message, etc.), or IP data.

-R, retain position, length is 1.Retain position and be set to 0 at present;

Have 3 to retain position (R position) in the PDCP packet of user face, if these 3 to retain positions be not 0 entirely, then represent that PDCP packet is a special PDCP message, as 001 represents ROHC head compression response message.Current 010-111 belongs to and retains setting, for specifying specific PDCP message/data Packet type;

-SN position, PDCP packet number position, according to PDCP data packet format, length can be 5,7,12.PDCP SN is in order to the sending order of PDCP bag synchronous between UE and eNodeB, and often send a PDCP packet, SN increases 1.Whether PDCP packet number need be synchronous between UE and eNodeB, intermediate node can be had to seal between UE and eNodeB in order to detection and send false data;

-Data position, in order to carry concrete data, as RRC signaling, IP packet.

Based on the PDCP data packet format in correlation technique, provide a kind of new PDCP packet in the present embodiment, this PDCP is constructed as follows: the header field part of this PDCP packet comprises following information: neighbour's communication indicating bit (ProSe indicating bit), and this neighbour indicating bit that communicates is used to indicate this PDCP packet for neighbour's communication data packet; The mark (TargetUE ID) of receiving terminal.More preferably, the header field part of this PDCP packet, can also comprise: the mark (Source UE ID) of transmitting terminal, wherein, it should be noted that, Source UE ID might not be necessary, when not carrying this Source UE ID, the length of PDCP packet can be reduced.

The mark of this receiving terminal, the mark (being referred to as this receiving terminal and transmitting terminal with terminal below) of transmitting terminal, can be following one of at least: neighbour's communication id (ProSe-ID) that neighbour's communication server (ProSe Server) distributes for UE; 3GPP network is the ID of terminal distribution.Wherein, neighbour's communication server (ProSe Server) for ProSe-ID that UE distributes can be following one of at least: be ProSe-ID unique in the whole network of distributing of UE; According to the positional information of UE, the ProSe-ID distributed in local location region; This 3GPP network be terminal distribution ID can for following one of at least: IMSI, S-TMSI, RNTI.

Based on above-mentioned new PDCP packet, additionally provide a kind of neighbour's communication data packet routing method in the present embodiment, the method comprises: transmitting terminal UE sends PDCP packet to eNodeB, carries the ID of neighbour's communications identification (ProSe ID), receiving terminal UE in the header field of this PDCP packet; The neighbour communications identification (ProSeIndi) of eNodeB according to PDCP packet header field, the ID of receiving terminal UE, carry out data packet by.

Before transmitting terminal UE sends PDCP packet to eNodeB, also comprise: transmitting terminal UE knows the ID of receiving terminal UE, the IP of receiving terminal UE.More preferably, at transmitting terminal UE before sending DPCP packet to eNodeB, also comprise: transmitting terminal UE selects suitable carrying from EPS carrying/wireless DRB bearing resource; Transmitting terminal UE selects the mode of suitable carrying can be multiple, such as, one of at least can select suitable carrying in the following ways:

If there is the DRB of multiple ProSe Enabled, by the qos requirement sending data, select the wireless DRB carrying of suitable EPS carrying and correspondence thereof;

If the only EPS carrying of a ProSe Enable and the wireless DRB carrying of correspondence thereof, selects this EPS to carry and the wireless DRB of correspondence carries;

Select EPS default bearer, and the wireless DRB carrying of correspondence;

ENodeB carry out data packet by time, can adopt following process: eNodeB, according to the ID of receiving terminal UE, judges receiving terminal whether under eNodeB, if receiving terminal UE is under eNodeB, then eNodeB sends PDCP packet directly to receiving terminal UE; And/or if receiving terminal UE is not under described eNodeB, then eNodeB extracts the IP data in PDCP packet, to upper strata route (sending to SGW).

Wherein, when eNodeB judges that receiving terminal UE is under eNodeB, send this PDCP packet directly to receiving terminal UE, comprising: eNodeB selects suitable wireless DRB carrying from the wireless DRB bearing resource of receiving terminal UE, this wireless DRB carrying sends PDCP packet.Equally, eNodeB selects suitable wireless DRB carrying from the wireless DRB bearing resource of receiving terminal UE, also can adopt multiple processing mode, such as, can in the following way one of at least: if there is the DRB of multiple ProSe Enabled, by the QCI of transmitting terminal UE, select the DRB of receiving terminal UE; If the only DRB of a ProSe Enable, selects this DRB; Select the DRB that EPS default bearer is corresponding.

Below in conjunction with accompanying drawing, the preferred embodiment of the present invention is described.

Preferred embodiment one, the PDCP data packet format of carrying ProSe communication data

Figure 18, Figure 19 are the PDCP data packet format schematic diagrames for ProSe communication in the preferred embodiment of the present invention, relative to user face PDCP packet under correlation technique, there is following improvement: in the header field part of PDCP packet, there is following information: neighbour's communication instruction (ProSe ID): PDU Type(i.e. 3 R retain position) part, be set to ProSe indicating bit, value in desirable 010-111, typically, can be set to 111; Reception/transmitting terminal ID(Target/Source UE ID), comprising: receiving terminal ID(Target UE ID): in order to indicate the ID of receiving terminal, length can be arranged according to network condition, typically can be set to 16.Transmitting terminal ID(Source UE ID): in order to indicate the ID of source terminal, length is arranged according to network condition, typically can be set to 16.Source terminal ID, can be used for receiving terminal under the prerequisite not detecting the IP packet comprised in PDCP packet, can judge ProSe Data Source.

In addition, the same with user face PDCP packet in correlation technique, in the PDCP data packet format shown in Figure 18,19, also comprise Data part, carrying IP data, carry the IP packet of neighbour's communication herein.If network is UE be assigned with legal IP address, this IP packet answers the real IP address distributing to UE Network Based, IP packet in this PDCP packet can be extracted by eNodeB, on S1-U interface, SGW is sent to according to the flow process in correlation technique, thus, the switching of the EPC communication that can comparatively easily realize communicating from ProSe.

In the PDCP data packet format shown in above-mentioned Figure 18,19, for reception/transmitting terminal ID(Target/Source UE ID) information, it is in the filling of PDCP packet header field part, can one of in the following way:

Figure 18 is according to the preferred embodiment of the invention for the PDCP data packet format one of ProSe communication, as shown in figure 18, in PDCP packet header field, only there is a Termination ID element: this Termination ID element, in the PDCP packet that transmitting terminal sends, be filled to the ID(Target UE ID of receiving terminal), in the PDCP packet that receiving terminal receives, be filled to the ID(Source UE ID of transmitting terminal).When eNodeB is when receiving the PDCP packet that transmitting terminal sends, when sending PDCP packet to receiving terminal, according to the ID of the transmitting terminal that eNodeB stores, this Termination ID element is filled to the ID(Source UE ID of transmitting terminal);

Figure 19 is according to the preferred embodiment of the invention for the PDCP data packet format two of ProSe communication, as shown in figure 19, in PDCP packet header field, there are two Termination ID elements, fill transmitting terminal ID(Source UE ID respectively), receiving terminal ID(Target UE ID).When eNodeB receives and sends PDCP packet, Termination ID element is not changed.

Save Radio Resource as far as possible if consider, then can adopt the user face PDCP data packet format described in Figure 18.If too do not consider the saving of Radio Resource, then can adopt the user face PDCP data packet format described in Figure 19.Adopt form described in Figure 19, there is following benefit: receiving terminal, under the prerequisite not untiing IP packet, can know the transmitting terminal sending PDCP packet.Otherwise, receiving terminal is after receiving PDCP packet as described in Figure 18, need the IP address according to the transmitting terminal in IP packet, the ID of the transmitting terminal that inquiry is corresponding, just can know whom transmitting side terminal is, thus when replying IP data, transmitting terminal ID is filled in response PDCP packet.

It should be noted that, for the ID of the reception/transmitting terminal shown in Figure 18,19, it can be neighbour's communication id (ProSe-ID) that neighbour's communication server (ProSeServer) distributes to UE, also can be 3GPP network allocation to the ID(of UE referred to as 3GPP-ID), as the long-term ID that terminal unit contractual is joined to network Time Division, i.e. IMSI, or the interim ID temporarily distributed when terminal is attached to EPS network, i.e. S-TMSI.

For reception/transmitting terminal ID, plurality of distribution mode can be adopted, such as, can adopt and distribute with the following method:

(A) ProSe Server is the unique ID(ProSe-ID of the whole network: this ID of UE distribution): distribute when UE is registered to ProSe Server, this ProSe-ID is unique in the whole network, identify the UE in neighbour's communication, be stored on UE, EUTRAN/EPC network (as eNodeB).

(B) 3GPP network be the identity ID(that distributes of UE referred to as 3GPP-ID, comprise IMSI/S-TMSI etc.): after UE is signed in network, operator is that to distribute IMSI, this IMSI be the long-term identify label of terminal to UE.When UE is linked into EUTRAN/EPC network, MME is that UE distributes temporary identifications S-TMSI, can be mapped to IMSI, this S-TMSI on-demand update in a network.When UE is at connected state, this IMSI/S-TMSI is stored on UE, EUTRAN/EPC network (as eNodeB, MME).

(C) ProSe Server is according to the position of UE, the band of position when ProSe-ID:ProSe Server distributed in a regional area can register according to UE (as, the combination of one or more TA/Cell), for UE distributes the ProSe-ID in regional area, unique in this region, but be not that the whole network is unique.Because neighbour's communication occurs over just on the UE of position close proximity, therefore in the less band of position, giving the ProSe-ID that allocated length is less, is feasible.Can consider to use this RNTI as Termination ID to fill the PDCP packet described in Figure 18,19.

(D) EUTRAN/EPC is according to the position of UE, distributes the interim ID in a regional area: such as, in the related, and eNodeB can distribute wireless network interim ID(Radio Network Temporary Identity, referred to as RNTI for UE).The feature of RNTI is very short by cell allocation, length.If the position of UE is fixed, do not deposit the possibility of position movement, then can consider to use this RNTI as Termination ID to fill the PDCP packet described in Figure 18,19.

Consider that Radio Resource is very valuable, Termination ID entrained in PDCP packet, length should be little as far as possible.In the allocative decision of above-mentioned Termination ID, (C), (D) scheme is used in regional area as the ID of UE distribution is to fill receiving terminal ID, source terminal ID entrained in PDCP packet, the length of PDCP packet can be reduced to the full extent, save Radio Resource.But adopt (C), (D) scheme, the defect brought is, when UE shifts out this regional area, needs, again for UE distributes new ID, likely can cause the temporary interruption of Packet Generation.

Preferred embodiment two, eNodeB local routing carries the PDCP bag of ProSe communication data

Adopt PDCP packet building method described in Figure 18,19, transmitting terminal can send to eNodeB, receive the PDCP bag (i.e. header field comprise that ProSe indicates, the PDCP packet of the ID of reception/transmitting terminal) carrying ProSe data from eNodeB.

Be different from the flow process described in Figure 16, eNodeB is that UE1, UE2 divide the specific ProSe communication resource (i.e. request dispatching PC5 air interface resource) being used in neighbour's communication, in the present embodiment, UE can utilize the EPS carrying of having set up, wireless DRB carries, and send/receive the PDCP packet carrying ProSe data.

Particularly, when transmitting terminal (Source UE) wishes to send ProSe data to receiving terminal (Target UE), transmitting terminal structure PDCP packet, ProSe-ID, 3GPP-ID etc. of ID(receiving terminal of ProSe instruction, receiving terminal are carried) in the header field part of PDCP packet, and the DRB that selection one is suitable in the wireless DRB carrying of transmitting terminal, send this PDCP packet to eNodeB.

Transmitting terminal (Source UE) can adopt one of following method, selects suitable EPS carrying/wireless DRB carrying to send the PDCP packet carrying ProSe data:

If there is EPS carrying/wireless DRB carrying that many are marked as support neighbour's communication (ProSe Enabled) in transmitting terminal, according to service quality (QoS) requirement of neighbour's communication, in the carrying supporting neighbour's communication (ProSe Enabled), select the wireless DRB of a suitable EPS and correspondence thereof to carry;

If transmitting terminal only exists EPS carrying/wireless DRB carrying that is marked as support neighbour's communication (ProSe Enabled), then select the wireless DRB carrying of this EPS carrying and correspondence thereof uniquely;

If transmitting terminal does not exist to be marked as support the EPS of neighbour's communication (ProSe Enabled) carrying/wireless DRB carrying, then select the wireless DRB carrying of EPS default bearer (Default Bearer) and correspondence thereof.

After UE is attached to network, network, when setting up carrying for UE, can consider neighbour's ability to communicate of UE, according to network strategy, by some bearing mark for supporting neighbour's communication (ProSe Enabled), thus suitable carrying is selected in the transmission that UE can be ProSe data according to this mark.

When not considering service quality (QoS) demand, transmitting terminal can press the simplest principle defaultly, selects the wireless DRB carrying of EPS default bearer and correspondence, controls as transmission the default bearing carrying Prose data;

When eNodeB receive transmitting terminal send carry the PDCP packet of ProSe data time, ID(Target UE ID according to the receiving terminal in PDCP packet), find receiving terminal, check the wireless DRB resource of receiving terminal, find suitable wireless DRB carrying, will the PDCP Packet Generation of ProSe data be carried to receiving terminal.

ENodeB can use following method to select the wireless DRB carrying of receiving terminal, sends the PDCP packet carrying ProSe data:

If receiving terminal exists many be marked as the wireless DRB carrying supporting neighbour's communication (ProSe Enabled), then eNodeB is according to the service quality (QoS) of the wireless DRB carrying of transmitting terminal, in the carrying of the support neighbour communication (ProSeEnabled) of receiving terminal, select the wireless DRB carrying that suitable;

If receiving terminal only exists one be marked as the wireless DRB carrying supporting neighbour's communication (ProSe Enabled), then eNodeB selects this wireless DRB carrying uniquely;

If receiving terminal does not exist the wireless DRB carrying being marked as and supporting neighbour's communication (ProSe Enabled), then eNodeB selects the wireless DRB carrying corresponding to EPS default bearer (Default Bearer).

Extraly, according to the user face PDCP data packet format shown in Figure 18, eNodeB, before carrying the PDCP packet of ProSe data to receiving terminal transmission, also needs the ID Termination ID in PDCP packet being changed to transmitting terminal.ENodeB according to the context of transmitting terminal, can find the ID(of transmitting terminal as ProSe-ID, IMSI, S-TMSI etc.), replace the Termination ID element in the header field of described PDCP packet.

Figure 20 is that base station local routing carries the flow chart of the PDCP packet of ProSe data according to the preferred embodiment of the invention, and as shown in figure 20, take base station as eNodeB for example is described, this flow process comprises the steps:

Upper layer application (neighbour's communication applications, as micro-letter) on step S2001, UE1, initiates the transmission of neighbour's communication data;

Step S2002, the triggering of response and upper layer application, UE1 structure carries the PDCP packet of ProSe communication data, and by this PDCP Packet Generation to eNodeB;

Detect at UE1 the neighbour that UE2 is UE1, and obtain the ID(of UE2 as ProSe-ID, IMSI, S-TMSI etc.), behind IP address, UE1 can ask to send ProSe packet to UE2.In the header field of described PDCP packet, carry ProSe indicating bit, UE2 the ID(of ID, UE1 optional, according to Fig. 6 but not the PDCP data packet format shown in Fig. 5).

Step S2003, eNodeB receive PDCP packet, and according to ProSe indicating bit, UE2ID, differentiation should perform local routing;

In this step, eNodeB identifies ProSe indicating bit, and judgement preferentially should perform local routing.And then eNodeB is according to receiving terminal ID(and UE2ID in PDCP bag), whether inquiry eNodeB this UE is under this eNodeB.If UE is under this eNodeB, then eNodeB according to the ID(of preserved UE as ProSe-ID, IMSI, S-TMSI etc.), prove that UE2 is under this eNodeB, then eNodeB can to this PDCP packet perform local routing.

Step S2004, eNodeB select suitable DRB in the wireless DRB carrying of UE2, will carry the PDCP Packet Generation of ProSe data to UE2.

In this step, eNodeB is according to the contextual information of UE2, and the wireless DRB carrying of inquiry UE2, adopts preceding method to select the wireless DRB carrying of receiving terminal (UE2).

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

After step S2005, UE2 receive this PDCP packet, by IP Packet Generation wherein to upper layer application (neighbour's communication applications).

It is pointed out that the embodiment of application described in Figure 20, following primary condition should be possessed:

UE1, UE2 are neighbour's terminals;

UE1, UE2 access is under same eNodeB, and current is RRC connection status;

For UE1, UE2 scene not under same eNodeB, the embodiment described in Figure 20 is also inapplicable, but eNodeB can carry out the IP packet that superior route UE sends according to the embodiment described in Figure 21.

Preferred embodiment three, eNodeB superior route carries the PDCP bag of ProSe communication data

Figure 21 be according to the preferred embodiment of the invention base station upwards route carry the flow chart of the PDCP packet of ProSe communication data, as shown in figure 21, when transmitting terminal UE, receiving terminal UE be not under same eNodeB, eNodeB extracts the IP data carried in the PDCP packet of ProSe data, and the flow chart of IP data described in superior route, comprise the steps:

Step S2101 ~ step S2102, as shown in step S2001 in Figure 20 ~ step S2002, UE1 sends the PDCP packet carrying ProSe data;

After what step S2103, eNodeB1 received that UE1 sends carry the PDCP packet of ProSe data, according to receiving terminal ID(and UE2ID), judge UE2 not under this eNodeB, decision superior route;

Step S2104, eNodeB1 extract IP packet from PDCP packet, and S1-U mouth constructs GTP-U packet, carry IP packet, send to SGW/PGW, and SGW/PGW performs data route according to normal IP data packet routing method;

After step S2105, the SGW of object UE receive IP packet, the eNodeB2 that eNodeB(and UE2 to object UE accesses) send GTP-U packet, carry IP packet;

Suppose that UE1, UE2 are on same SGW herein, on a SGW, flow process can not certainly not affected.

Step S2106, eNodeB2 press prior art, by IP Packet Generation to UE2;

After step S2107, UE2 receive this PDCP packet, by IP Packet Generation wherein to upper layer application (neighbour's communication applications);

After step S2108, UE2 receive the IP packet of UE1 transmission, response IP bag may be returned.Because UE2 receives the IP packet of UE1 transmission from normal PDCP packet, thus UE2 returns response IP bag by normal flow.

In the flow process described in Figure 21, UE1 uses the PDCP form of carrying ProSe data to send data to UE2, and the response IP received from UE2 wraps from normal PDCP Packet Generation, then UE1 can think follow-up and should send follow-up IP packet by the process of transmitting of normal IP data to UE2.

Embodiment four, obtains neighbour's end message in neighbour's discovery procedure

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

If UE1 uses ProSe-ID to send PDCP data to UE2, then according to the flow process described in Figure 16, UE1 directly can obtain the ProSe-ID of UE2.

If UE1 uses 3GPP-ID(IMSI or S-TMSI of UE2), then UE directly directly cannot obtain the 3GPP-ID of UE2 by the flow process described in Figure 16, and the enhancing flow process described in Figure 22 must be used to obtain the 3GPP-ID of UE2.

Figure 22 is the flow chart obtaining neighbour's end message in the neighbour's discovery procedure according to the embodiment of the present invention, as shown in figure 22, in this neighbour's discovery procedure, obtain the process of the information (UE ID, UE IP) of neighbour's terminal, this process, based on flow process described in Figure 16, has following enhancing:

1) ProSe registration process:

In step S2202, UE1 to ProSe Server initiate ProSe registration process time, can simultaneously by the 3GPP-ID(of the IP address (the IP address that UE is assigned with in attaching process) of UE1, UE1 as S-TMSI or IMSI) send to ProSeServer.Thus ProSe Server can store IP, 3GPP-ID(of UE as S-TMSI, IMSI) so that other UE follow-up ask to return to request UE during buddy list.

In step S2206, during UE1 request dispatching ProSe-ID, can simultaneously by the 3GPP-ID(of the IP address (the IP address that UE is assigned with in attaching process) of UE1, UE1 as S-TMSI or IMSI) send to ProSe Server.

In step S2210, during the ProSe Server ProSe-ID distributed for UE1 returns, return the buddy list of UE1 simultaneously, to each good friend, return IP, 3GPP-ID, App-ID, ProSe-ID of good friend.

In this step, when ProSe Server is UE distribution ProSe-ID, ProSe-ID can be distributed in network-wide basis.Also with reference to the position of UE, can be only UE distribution ProSe-ID in a regional area (combination of one or more TA/Cell), thus make the length of ProSe-ID smaller.

ProSe Server can from the current positional information (TA, Cell) of Network Capture UE, or in step S2202, and UE provides self positional information (TA, Cell) simultaneously, distributes ProSe-ID for ProSe Server according to positional information.

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

In step S2212, return in the ProSe-ID assignment response of UE1, comprise the buddy list of UE1, to each good friend, return IP, 3GPP-ID, App-ID, ProSe-ID of good friend.

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

2) ProSe discovery procedure:

Consistent with the ProSe discovery procedure described in Figure 16, what distinguished is, after UE1 detects the ProSe-ID of UE2, can according to the buddy list info that UE1 preserves (IP, 3GPP-ID, App-ID, ProSe-ID of UE), obtain IP, 3GPP-ID of UE2, follow-uply can be used to send the PDCP packet carrying ProSe data.

In the flow process described in Figure 22, IP, 3GPP-ID of UE are only informed to ProSe Server when execution ProSe registration or request ProSe-ID distribute by UE.But, the IP of UE may change, the 3GPP-ID of UE also may change (the dynamic code reassignment process as S-TMSI), after IP, 3GPP-ID change of UE, UE should initiate ProSe registration process or request ProSe-ID assigning process again, to upgrade IP, 3GPP-ID of the UE preserved on ProSe Server.After UE upgrades its IP, 3GPP-ID, ProSe Server should send notice to the good friend of UE, informs that IP, 3GPP-ID of this UE change.

But, 3GPP-ID(S-TMSI or IMSI due to UE) and belong to sensitive data, and in the flow process shown in Figure 22, the 3GPP-ID of self is informed to ProSe Server by UE, adds the risk exposing 3GPP-ID.

In order to avoid exposing the risk of the 3GPP-ID of UE, UE, when sending the PDCP bag carrying ProSe data, can use the ProSe-ID of destination end UE as Target UE ID.Thus in the flow process shown in Figure 22, UE is without the need to notifying its 3GPP-ID to ProSe Server.

Namely there are two kinds of modes to realize carrying ProSe data in PDCP packet:

1) in PDCP packet, use the ProSe-ID of UE to fill receiving terminal ID, source terminal ID.Like this in the flow process shown in Figure 22, only require that UE reports the IP address of UE to ProSe Server;

2) in PDCP packet, 3GPP-ID(S-TMSI or IMSI of UE is used) fill receiving terminal ID, source terminal ID.Like this in the flow process shown in Figure 22, require that UE reports IP, 3GPP-ID of UE to ProSe Server simultaneously.But this mode has the risk of the 3GPP-ID exposing UE.

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

In the neighbour's communication data packets routing forwarding flow process shown in aforementioned Figure 20,21, after transmitting terminal needs ID, IP address of acquisition receiving terminal, this flow process could realize.

When transmitting terminal (UE1) only obtains the ID(of receiving terminal (UE2) as ProSe-ID), when namely not knowing the IP address of UE2, still there is a kind of possible method, use the flow process described in Figure 20,21.

In a local network, when sending an IP packet to a limited broadcast address (255.255.255.255), this IP packet will be sent on machines all in local area network (LAN), the machine receiving this IP broadcast bag can obtain the IP of the machine sending IP broadcast bag, and can respond IP packet.Method similarly, can be applied in the flow process shown in Figure 20,21, realizes the object that transmitting terminal and receiving terminal detect IP address mutually.

Figure 23 is the method flow diagram utilizing IP broadcast mutually to detect IP address according to the preferred embodiment of the invention, and as shown in figure 23, this flow process comprises the steps:

Step S2301, UE1 still construct aforesaid PDCP packet, namely carry the ID of ProSe instruction, UE2 at PDCP data packet header.In this PDCP packet, UE1 can construct an IP broadcast packet, such as uses limited broadcast address (255.255.255.255).Router (as PGW) can not forward the IP broadcast that this carries limited broadcast address, but according to preceding method in the present embodiment, eNodeB can by this IP broadcast transmission and reception terminal (UE2).

Step S2302 ~ S2303, according to the flow process described in Figure 20,21, eNodeB by this PDCP Packet Generation to UE2;

Step S2304, if UE2 has the ability to respond the IP broadcast carrying limited broadcast address that UE1 sends, then UE2 can: the IP of ID and UE1 of record UE1, the transmitting terminal IP address namely in IP broadcast bag;

Usually, transmitting terminal UE1 and receiving terminal UE2 should adopt identical port to carry out communication, as: UE1 sends IP broadcast on port 2445, then UE2 should monitor IP broadcast data on port 2445.The data volume part of IP broadcast, can carry any application layer data.

As step S2305 ~ S2307, UE2 can use the method that UE1 is identical, return a similar PDCP packet to UE2, this PDCP data packet header carries the ID of ProSe instruction, UE1, and data volume part comprises the IP broadcast packet of the use limited broadcast address that UE2 sends.

Or UE2 can use the IP of UE1, send point-to-point IP packet, and do not send IP broadcast packet to UE1, the IP packet that UE2 sends still is carried in the PDCP packet being labeled as neighbour's communication (ProSe).

Step S2308, if UE1 has the ability to respond the IP broadcast carrying limited broadcast address that UE1 sends, then UE1 can: the IP of ID and UE2 of record UE2, the transmitting terminal IP address namely in IP broadcast bag;

Thus use the program, UE1 and UE2 can send the PDCP packet carrying IP broadcast packet mutually, and after eNodeB route is to receiving terminal, UE1, UE2 can detect the IP address of opposite end mutually.Thus UE1, UE2 can normally send by aforementioned Figure 20,21 the PDCP packet carrying ProSe data, realize neighbour's communication.

Obviously, those skilled in the art should be understood that, above-mentioned of the present invention each module or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on network that multiple calculation element forms, alternatively, they can realize with the executable program code of calculation element, thus, they can be stored and be performed by calculation element in the storage device, and in some cases, step shown or described by can performing with the order be different from herein, or they are made into each integrated circuit modules respectively, or the multiple module in them or step are made into single integrated circuit module to realize.Like this, the present invention is not restricted to any specific hardware and software combination.

The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.

Claims

1. a packet data polymerized agreement PDCP data package processing method, is characterized in that, comprising:

Construct described PDCP packet, wherein, the header field part of described PDCP packet includes the identification information of neighbour's communication indication information and receiving terminal;

Neighbour's communication is carried out according to the described PDCP packet constructed and described receiving terminal.

2. method according to claim 1, is characterized in that, the header field part of described PDCP packet also includes the identification information of transmitting terminal.

3. method according to claim 1, is characterized in that, before the described PDCP packet of structure, also comprises and one of at least obtains the identification information of described receiving terminal and the IP address of described receiving terminal in the following manner:

The identification information of described receiving terminal and the IP address of described receiving terminal is obtained from neighbour's communication server;

When only getting the identification information of described receiving terminal, the mode of carrying the IP broadcast packet of limited broadcast address sent by receiving described receiving terminal obtains the IP address of described receiving terminal.

4. method according to claim 1, is characterized in that, carries out neighbour's communication comprise according to the described PDCP packet constructed and described receiving terminal:

By described PDCP Packet Generation to base station, wherein, described receiving terminal is given by described base station by described PDCP Packet Generation.

5. method according to claim 4, is characterized in that, is being given before described base station by described PDCP Packet Generation, also comprises the carrying one of at least determining sending described PDCP packet in the following manner:

According to the service quality of carrying, determine the carrying sending described PDCP packet;

Number according to the carrying supporting neighbour's communication determines the carrying sending described PDCP packet;

Default bearer is defined as the carrying for sending described PDCP packet.

6. method according to any one of claim 1 to 5, is characterized in that, the identification information of described receiving terminal, or, the identification information of described transmitting terminal be following one of at least:

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

Third generation mobile Partnership Program 3GPP network is the identification information that described terminal UE is distributed;

Described neighbour's communication server is the neighbour's communications identification information in the regional area that distributes of described UE according to the position of described UE;

The Universal Terrestrial wireless access network EUTRAN of evolution is the temporary mark information in the regional area that distributes of described UE according to the position of described UE;

Evolution packet switching center EPC is the temporary mark information in the regional area that distributes of described UE according to the position of described UE.

7. a packet data polymerized agreement PDCP data package processing method, is characterized in that, comprising:

Receive the PDCP packet that transmitting terminal sends, wherein, the header field part of described PDCP packet includes the identification information of neighbour's communication indication information and receiving terminal;

Described PDCP Packet Generation is given described receiving terminal by the header field part according to described PDCP packet.

8. method according to claim 7, is characterized in that, the header field part of described PDCP packet also includes the identification information of described transmitting terminal.

9. method according to claim 7, is characterized in that, before described PDCP Packet Generation is given described receiving terminal by the header field part according to described PDCP packet, also comprises:

The identification information of described transmitting terminal is filled in the header field part of described PDCP packet.

10. method according to claim 7, it is characterized in that, in the header field part according to described PDCP packet, described PDCP Packet Generation is given before described receiving terminal, also comprises and one of at least to determine described PDCP Packet Generation to the carrying of described receiving terminal in the following manner:

Service quality according to carrying determines described PDCP Packet Generation to the carrying of described receiving terminal;

Number according to the carrying supporting neighbour's communication determines described PDCP Packet Generation to the carrying of described receiving terminal;

Default bearer is defined as by described PDCP Packet Generation to the carrying of described receiving terminal.

11. methods according to claim 7, is characterized in that, described PDCP Packet Generation comprises to described receiving terminal by the header field part according to described PDCP packet:

According to the identification information of described receiving terminal, judge whether described receiving terminal and described transmitting terminal belong to same base station;

When judged result is for being, described PDCP packet is directly sent to described receiving terminal; And/or,

When judged result is no, by the IP packet extracted from described PDCP packet, send described IP packet to gateway SGW/ common data gateway PGW, finally send to described receiving terminal.

12. 1 kinds of packet data polymerized agreement PDCP data packet processing, is characterized in that, comprising:

Constructing module, for constructing described PDCP packet, wherein, the header field part of described PDCP packet includes the identification information of neighbour's communication indication information and receiving terminal;

Communication module, for carrying out neighbour's communication according to the described PDCP packet constructed and described receiving terminal.

13. devices according to claim 12, is characterized in that, also comprise acquisition module, and described acquisition module is used for one of at least obtaining the identification information of described receiving terminal and the IP address of described receiving terminal in the following manner:

14. devices according to claim 12, is characterized in that, described communication module comprises:

First transmitting element, for by described PDCP Packet Generation to base station, wherein, by described base station by described PDCP Packet Generation give described receiving terminal.

15. devices according to claim 14, is characterized in that, also comprise determining unit, for being given before described base station by described PDCP Packet Generation, also comprise the carrying one of at least determining sending described PDCP packet in the following manner:

Service quality according to carrying determines the carrying sending described PDCP packet;

Default bearer is defined as the carrying for sending described PDCP packet.

16. 1 kinds of terminals, is characterized in that, comprise the device according to any one of claim 12 to 15.

17. 1 kinds of packet data polymerized agreement PDCP data packet processing, is characterized in that, comprising:

Receiver module, for receiving the PDCP packet that transmitting terminal sends, wherein, the header field part of described PDCP packet includes the identification information of neighbour's communication indication information and receiving terminal;

Sending module, gives described receiving terminal for the header field part according to described PDCP packet by described PDCP Packet Generation.

18. devices according to claim 17, is characterized in that, also comprise and fill in module,

Describedly fill in module, before giving described receiving terminal in the header field part according to described PDCP packet by described PDCP Packet Generation, fill in the identification information of described transmitting terminal in the header field part of described PDCP packet.

19. devices according to claim 17, it is characterized in that, also comprise determination module, for described PDCP Packet Generation being given before described receiving terminal in the header field part according to described PDCP packet, one of at least to determine described PDCP Packet Generation to the carrying of described receiving terminal in the following manner:

20. devices according to claim 17, is characterized in that, described sending module comprises:

Judging unit, for the identification information according to described receiving terminal, judges whether described receiving terminal and described transmitting terminal belong to same base station;

Second transmitting element, for when the judged result of above-mentioned judging unit is for being, directly sends to described receiving terminal by described PDCP packet; And/or,

3rd transmitting element, for when the judged result of above-mentioned judging unit is no, by the IP packet extracted from described PDCP packet, finally sends to described receiving terminal.

21. 1 kinds of base stations, is characterized in that, comprise the device according to any one of claim 17 to 20.

22. 1 kinds of communication systems, is characterized in that, comprise terminal according to claim 16 and base station according to claim 21.