CN110419243A - Communication system - Google Patents

Abstract

Communication system (1) has the eNB (60) as base station apparatus and new S-GW (30) and new MME (50) as communication control unit.Communication control unit according to include forward-path whether determination unit (51), determine a need for for UE (90) forwarding for UE (90) buffered data forwarding communication path；Forward-path generates instruction unit (52) and forward-path generating unit (31), carries out using the relevant processing of the generation of communication path with forwarding between eNB (60)；And forward process portion (32), not sent data, that is, buffered data is sent to eNB (60) via forwarding communication path.Furthermore, there are eNB (60) data to send sequential control portion (62), it carries out control as follows: in the case where receiving the buffered data with UE (90) for destination with communication path via forwarding, before via the data usually sent with communication path, buffered data is sent to UE (90).

Description

Communication system

Technical field

The present invention relates to a kind of communication systems.

Background technique

In a communications system, DRX is used in order to reduce the power consumption of the communication terminal carried out wireless communication (Discontinuous Reception: intermittent reception) control.DRX is that the off time (suspend mode for not receiving data is arranged (sleep) time) and intermittently carry out the technology of the data receiver in communication terminal.In addition, in recent years, also studied to use and prolong The technology of the extension DRX (extended-DRX) of off time is grown.

Existing technical literature

Patent document

Patent document 1: Japanese Unexamined Patent Publication 2015-181319 bulletin

Summary of the invention

Problems to be solved by the invention

In DRX, as mentioned above due to carrying out the limited time of data receiver in communication terminal, therefore in communication terminal In, core network side is accumulated in the data that the period without data receiver is sent to communication terminal.However, when communication Terminal can not will be accumulated in the number of core network side when starting data receiver after having carried out ownership mobile (moving in circle) etc. According to being properly transmitted to communication terminal.

The present invention has been made in view of the above-described circumstances, and it is an object of the present invention to provide a kind of communication system, can suitably carry out It is sent for the data for the communication terminal for intermittently carrying out data receiver.

The means used to solve the problem

In order to achieve the above object, communication system involved in an embodiment of the invention is led to core network Letter connection, and controlled from the communication terminal that the 1st region is changed to the 2nd region as the transmission of the data of destination to using resident area System, wherein the communication system includes base station apparatus, it includes within the core network, leads in the 2nd region with described It is communicatively coupled between letter terminal；And communication control unit, be arranged in correspondence with the 2nd region, with the base Communication path is set between station arrangement, and is sent for the purpose of the communication terminal via the communication path to the base station apparatus The data on ground, the communication control unit include forwarding communication path whether determination unit, be moved in the communication terminal At the time of 2 region, the forwarding communication path different from common communication path is determined a need for, the forwarding is used Communication path is used for the not sent number to communication terminal forwarding for the communication terminal for once residing in the 1st region According to；Forwarding communication path generating unit, whether determination unit is judged to needing the forwarding with communication path by the forwarding In the case where with communication path, place relevant with the generation of the forwarding communication path is carried out between the base station apparatus Reason；And forward process portion, the not sent data, institute are sent to the base station apparatus using the forwarding communication path It states base station apparatus and includes data transmission sequential control portion, the control being discussed below: that is, communicating control via with described The forwarding being arranged between device processed is received from the communication control unit using the communication terminal as mesh with communication path Ground the not sent data in the case where, sent out from the communication control unit sending via the common communication path Send using the communication terminal as the data of destination before, Xiang Suoshu communication terminal sends the not sent data.

Invention effect

According to the present invention, a kind of number that can suitably carry out for the communication terminal for intermittently carrying out data receiver is provided According to transmission.

Detailed description of the invention

Fig. 1 is the schematic structural diagram of communication system 1 involved in an embodiment of the invention, is previous for illustrating The figure of the problem of processing carried out.

Fig. 2 is the figure of the processing for illustrating to be carried out by communication system 1.

Fig. 3 is the functional block diagram of new MME, new S-GW and eNB included in communication system 1.

Fig. 4 is the timing diagram for illustrating the communication control method of communication system 1.

Fig. 5 is the timing diagram for illustrating the communication control method of communication system 1.

Fig. 6 is the figure for showing hardware configuration involved in each device of communication system.

Specific embodiment

Hereinafter, mode for carrying out the present invention is described in detail referring to attached drawing.In addition, in the description of the drawings, Identical label is assigned to identical element and the repetitive description thereof will be omitted.

Fig. 1 is the schematic structural diagram of communication system 1 involved in an embodiment of the invention.Communication shown in FIG. 1 System 1 is to constitute the core net of the communication standard (communication protocol) according to LTE (Long Term Evolution: long term evolution) The equipment group of network.Also, as multiple UE of communication terminal (User Equipment: user apparatus) 90 by with based on communicating The core network of system 1 connects, and can utilize the communication service of voice communications services etc..Communication system 1 is configured to comprising P-GW (Packet data network Gateway: grouped data network gateway) 10, old S-GW (Serving Gateway: service Gateway) 20, new S-GW30, old MME (Mobility Management Entity: mobility management entity) 40, new MME 50, eNB(evolved Node B)60。

P-GW10 can be connect with S-GW (old S-GW20 and new S-GW30), be and provided voice communications services or number According to tie point, that is, gateway (relay) of IP (Internet Protocol) backbone network (backbone) of communication service.It should P-GW10 forwards user data relevant to UE90 via old S-GW20 and new S-GW30.

S-GW (old S-GW20 and new S-GW30) can be connect with MME and eNB, via MME and eNB so that with UE90 connection is the packet gateway that the transmission of the IP grouping including control signal and user data is carried out between UE90 (relay).Specifically, S-GW carries out the relay and control of IP grouping according to the instruction from MME.S-GW has as logical The function of communication control unit in letter system 1.

In addition, in fig. 1 it is shown that such 2 S-GW of old S-GW20 and new S-GW30." old " and " new " corresponds to The mobile front and back of UE90.In the present embodiment, the resident area for showing UE90 is altered to new district from old area (the 1st region) The example in domain (the 2nd region).Also, the movement along with UE90 is shown, carries out the S-GW of the communication control of UE90 from old S- GW20 is altered to the case where new S-GW30.

MME (old MME40 and new MME50) be the more than one eNB of receiving and provide the mobility control in LTE and The interchanger of the function of carrying control etc..In addition, MME can also be connect with more than one S-GW, with eNB and S-GW carry out with Carrying controls the transmitting-receiving of relevant information.MME has the function as the communication control unit in communication system 1.It communicates as a result, Communication control unit in system 1 is made of S-GW and MME.

In addition, in fig. 1 it is shown that this 2 MME of old MME40 and new MME50.In the same manner as S-GW, " old " and " new " It is corresponding with the change of the resident area of the movement along with UE90, the movement along with UE90 is shown, receiving UE90 is led to Believe the case where MME of the eNB of connection is altered to new MME50 from old MME40.

ENB60 is base station apparatus.In fig. 1 it is shown that after the ownership due to UE90 caused by moving is mobile, that is, The eNB60 that UE90 is communicatively coupled in new region (the 2nd region).Therefore, eNB60 is accommodated in new MME50, and with It is communicated between new S-GW30, to carry out the transmitting-receiving of data.

In addition, the UE90 example of the offer of various services is communicatively coupled and received by wireless communication with communication system 1 The for example terminal installation for being able to carry out wireless communication of smart phone, tablet device etc..As described above, UE90 by user by being taken Band or the mobile means for being equipped on vehicle etc. and be able to carry out movement.When UE90 is moved across resident area, UE90 The eNB being communicatively coupled switches.In addition, as needed, being used for when the UE90 eNB being communicatively coupled is changed The UE90 communication path for sending data is also changed.In the present embodiment, mobile thus progress has been carried out to due to UE90 The case where eNB of communication connection is switched is illustrated.In addition, in the present embodiment, the MME of the eNB before receiving switching is (old MME40) different from each other with the MME (new MME50) of the eNB (eNB60) after receiving switching.In addition, to corresponding with old MME40 old S-GW20 and the case where new S-GW50 individualism corresponding with new MME50, are illustrated.

Then, referring to Fig.1, in the case where carrying out previous communication control in communication system 1 the problem of, is said It is bright.Here, being illustrated to the case where using DRX control or eDRX to control in UE90.(eDRX control) is controlled in DRX In, there is the period in UE90 without data receiver.That is, UE90 intermittently carries out the reception of data.In UE90 not Be the data of destination as not sent data using UE90 in the period for carrying out data receiver, be maintained at core network side, That is, being maintained in communication system 1.Specifically, in S-GW (here, being old S-GW20), using UE90 as destination but not The UE90 not sent data sent are kept as buffered data.Also, by the movement of UE90 (ownership moves), in movement In the case where the region of new eNB (for example, eNB60), UE90 sends and mobile relevant signal (Tracking eNB60 Area Update (tracking area update) signal), therefore buffer number is sent from old S-GW20 to UE90 using the signal as opportunity According to.

In the present embodiment, it is assumed that since region is mobile, the eNB that UE90 is communicatively coupled is switched to UE90 eNB60.That is, UE90 is communicatively coupled with new eNB60 after movement and carries out data receiver.In this case, work as UE90 When being communicatively coupled with eNB60 and carrying out location registration request, letter relevant to UE90 is carried out to new MME50 from old MME40 The transfer (drawing I after ぎ) of breath.Also, buffered data relevant to UE90 is maintained in old S-GW20 this point by from old MME40 is notified to new MME50.Therefore, new MME50 instruction is generated uses between old S-GW20 and new S-GW30 via old MME40 In the communication path (Indirect Tunnel: indirect tunnel) of intransit buffering data.As a result, generating for forwarding this slow The communication path for rushing data sends buffered data to new S-GW30 from old S-GW20 and (in Fig. 1, is expressed as the data of " 1 " " 2 " D)。

In addition, in order to send data to UE90 via new eNB60, being configured P-GW10 and new S- in new MME50 The usual processing with communication path (S1-U Path) between communication path and new S-GW30 and eNB60 between GW30. As a result, sending data to new S-GW30 (in Fig. 1, indicates when P-GW10 is received using UE90 as the data of destination For the data D of " 3 " " 4 ").

New S-GW30 via eNB60 sends the data D of " 1 " " 2 " that send from old S-GW20 to UE90 and from P-GW10 The data D of " 3 " " 4 " that send.However, new S-GW30 do not grasp from the data D of " 1 " " 2 " that old S-GW20 is sent with from Which of the data D of " 3 " " 4 " that P-GW10 is sent is legacy data (being the data for being first sent to UE90).Therefore, from new S- The sequence for the data D that GW30 is sent to UE90 is sometimes different from the data for the data for being sent to UE90 originally sequence.It is shown in Fig. 1 Example in, according to " 3 " " 4 " " 1 " " 2 " sequence to UE90 send data D.Therefore, it in UE90, is not connect although can receive The buffered data received can also receive transmitted data after location registration, but can may not come in the correct order It receives.Therefore, in the case where communication system 1 has carried out above-mentioned movement, being possible in UE90 can not be to the data received Carry out processing appropriate.

In contrast, in the communication system 1 involved in present embodiment, as shown in Fig. 2, as connect new S-GW30 with The communication path of eNB60 is also set up other than usual use communication path (S1-U Path) as original communication path Communication path, that is, forwarding for intransit buffering data is with communication path (Forwarding Path).Also, in new S-GW30 In, it is set as the buffered data sent from old S-GW20 and is sent out via forwarding communication path (Forwarding Path) to eNB60 It send, is set as the data from P-GW10 and is sent via original usual use communication path (S1-U Path) to eNB60.In addition, In In eNB60, compared with via the data usually sent with communication path (S1-U Path), first UE90 is sent and is used via forwarding The data that communication path (Forwarding Path) is sent.

In addition, be set as from old S-GW20 to the new S-GW30 buffered data sent finally, send indicate buffered data The data of end are the structure for terminating to mark (End Marker).About terminating to mark, old S-GW20 can be sent out from P-GW10 It send, also can be set to structure automatically additional in old S-GW20.Furthermore, it is possible to be set as in new S-GW30 in buffered data Transmission terminate after additional structure.

It is right with communication path (Forwarding Path) using forwarding in new S-GW30 by being set as this composition ENB60 sends buffered data, and comes from P- using original usual sent with communication path (S1-U Path) to eNB60 The data of GW10.Also, in eNB60, first UE90 is sent and is sent via forwarding with communication path (Forwarding Path) Data.Moreover, first sending via usual UE90 with communication after it confirmed to indicate end label that buffered data terminates The data that path (S1-U Path) is sent.As a result, the sequence according to " 1 " " 2 " " 3 " " 4 " sends data D to UE90.

Then, the function part for each device that above-mentioned control is able to carry out in communication system 1 is illustrated.Such as Fig. 3 institute Show, MME (new MME50) have forward-path whether determination unit 51 (forwarding with communication path whether determination unit) and forward-path Generate instruction unit (forwarding communication path generating unit) 52.In addition, S-GW (new S-GW30) have forward-path generating unit 31 (turn Hair communication path generating unit) and forward process portion 32.In addition, there is eNB60 forward-path generating unit 61 and data to send out Send sequential control portion 62.

The forward-path of MME whether determination unit 51 have determine whether to generate between new S-GW30 and eNB60 with it is original The usual forwarding communication path different with communication path function.According in the location registration process of UE90 from old The information related with buffered data that MME40 is provided is made whether to generate the judgement of forwarding communication path.That is, from old MME40 is notified of in the case where having buffered data relevant to UE90, in forward-path whether in determination unit 51, is judged to needing Generate the forwarding communication path for sending buffered data.On the other hand, it is not present and UE90 being notified of from old MME40 In the case where relevant buffered data, in forward-path whether in determination unit 51, it is judged to not needing generating forward-path.

The forward-path of MME, which generates instruction unit 52, has following function: forward-path whether the judgement knot of determination unit 51 Fruit is to generate forwarding communication lines to new S-GW30 and eNB60 instruction in the case where being judged to generating forwarding communication path Diameter.Forward-path, which generates instruction unit 52 and has, to be led to as use with the forwarding of the forwarding relevant processing of the generation of communication path Believe the function in coordinates measurement portion.

The forward-path generating unit 31 of S-GW have following function: receive from MME with forwarding communication path Generation relevant instruction when, according to the instruction, processing relevant with the generation of forwarding communication path is carried out between eNB. That is, forward-path generating unit 31 has as the forwarding communication lines for carrying out processing relevant to the generation of forwarding communication path The function of diameter generating unit.

The forward process portion 32 of S-GW, which has, sends from other S-GW (here, being eNB via forwarding communication path Old S-GW20) send using UE90 as the function of the data of destination.

The forward-path generating unit 61 of eNB has following function: receive from MME with forwarding communication path When generating relevant instruction, according to the instruction, processing relevant with the generation of forwarding communication path is carried out between S-GW.

The data of eNB, which send sequential control portion 62 and have, send towards UE90 via usually with communication path and turning Function of the hair communication path from the control of the S-GW data sent.In this case, first UE90 is sent and is passed through The data sent by forwarding communication path from S-GW send UE90 use communication path to send from S-GW via usual later Data.

Then, referring to Fig. 4 and Fig. 5, the communication control method of communication system involved in present embodiment is said It is bright.

Firstly, as shown in Figure 1, Figure 2 shown in grade, old S-GW20 keeps buffered data (S01) relevant to UE90 as premise. In addition, in order to UE90 send it is that P-GW10 is received, using UE90 as the data of destination, if P-GW10 and old S-GW20 it Between and old S-GW20 and old MME40 between in the state (S02) that can communicate.

Here, carrying out mobile UE90 via eNB60, Xiang Xin corresponding with new region across be resident region Request (the TAU Request (TAU request): S03) of MME50 progress location registration.Due to the location registration from the UE90 Request includes information relevant to the region being resident before UE90, thus according to the information, it is sent out from new MME50 to old MME40 Send the request (Context Request (context request): S04) of the relevant processing of the change to resident area.It is asked for this It asks, old MME40 makes response (Context Response (context response): S05) to new MME50.At this point, old MME40 is logical Knowing indicates that old S-GW20 has the case where buffered data relevant to UE90.Therefore, new MME50 can be obtained and related to UE90 The relevant information of the presence or absence of buffered data.

Then, new MME50 generates communication path (Create Session relevant to UE90 to new S-GW30 instruction Request (creation session request): S06).At this point, the generation being designated as with common communication path sent to new S-GW30 Relevant instruction.That is, being sent from new MME50 to new S-GW30 and the generation of the communication path between P-GW10, Yi Jihe The relevant instruction of the usual generation with communication path between eNB60.New S-GW30 is carried out and is communicated first between P-GW10 The relevant processing of the switching in path (Modify Bearer Request/Response (modification carrying request/response): S07). As a result, being configured the processing of communication path relevant with UE90 between new S-GW20 and P-GW10.At this point, P-GW10 is passed through Being sent by the communication path being arranged between old S-GW20 to old S-GW20 terminates label (End Marker:S08).Old S-GW20 In remain end label, when transmission of the buffered data in rear class, uses.Later, from new S-GW30 to new MME50 response (Create Session Response (answer by creation session for beginning and the relevant processing of the generation of communication path relevant to UE90 Answer): S09).In addition, setting is for sending using UE90 as mesh between P-GW10 and new S-GW30 in processing so far Ground data communication path (S10).Therefore, right in the case where P-GW10 is received using UE90 as the data of destination New S-GW30 carries out transmission appropriate.

Then, in new MME50, in forward-path whether in determination unit 51, judgement is between new S-GW30 and eNB60 It is no to generate the forwarding different from communication path is usually used with communication path (S11).As described above, forward-path whether determination unit In 51, judgement whether is carried out according to information relevant to the presence or absence of the buffered data that sends from old MME40.In present embodiment Shown in example, there are the information of buffered data (S05) to be indicated to new MME50 notice from old MME40.Therefore, on forwarding road Diameter is judged to needing to generate forwarding communication path whether in determination unit 51.In addition, by forward-path, whether determination unit 51 is carried out Forwarding communication path generate whether determine can also indicate the notice (S05) of information there are buffered data in notice It carries out immediately later.

Then, new MME50 carries out reply corresponding with location registration request to eNB60 and sends the life with communication path At relevant instruction (Initial Context Setup Request (initial context setting request): S12).Herein with The relevant instruction of the generation of communication path refers to finger relevant to the generation of communication path and forwarding communication path is usually used Show.That is, include based on forward-path whether the judgement result in determination unit 51, with from forward-path generate instruction unit 52 The forwarding relevant instruction of generation of communication path.In addition, whether being judged to not needing giving birth in determination unit 51 when in forward-path When at forwarding communication path, relevant instruction is generated only comprising using the generation of communication path related with usual to the communication path Instruction.

ENB60 receives request (the TAU Accept (TAU receiving): S13) of location registration to UE90 notice.Also, In In eNB60, processing relevant to the generation of communication path is usually used is carried out, and carry out and turn in forward-path generating unit 61 The relevant processing of the generation of hair communication path.Later, new MME50 notice has been carried out and relevant to the generation of communication path Indicate corresponding preparation (Initial Context Setup Response (initial context setting response): S14).New Life in MME50, according to the reply from eNB60, to being carried out between new S-GW30 instruction and eNB60 with usually using communication path At relevant processing (Modify Bearer Request (modification carrying request): S15).In new S-GW30, according to from new The instruction of MME50 carries out processing relevant with the generation of communication path is usually used between eNB60, and is arranged usually with communication Path (S1-U Path:S16).Therefore, what new S-GW30 was received becomes and can lead to via this using UE90 as the data of destination The state that common communication path is sent from new S-GW30 to eNB60.Also, the data that eNB60 is received are can to send out UE90 The state sent.

But in eNB60, receive to use the relevant instruction (S12) of the generation of communication path with forwarding, to start to control The processing of the transmission sequence of data.Kept in the present apparatus via usual with communication that is, data send sequential control portion 62 The control (S17) for the data that path is sent.Therefore, even if having sent the number sent from P-GW10 to new S-GW30 to eNB60 In the case where, by keeping data in eNB60, the transmission for UE90 can be retained.

During above-mentioned, be provided with usually with communication path after, from new S-GW30 to new MME50 notify carry out To usually with relevant processing (the Modify Bearer Response (modification carrying response): S18) of the generation of communication path.

Then, new MME50 indicates new S-GW30 the communication path of the buffered data for forwarding old S-GW20 to be kept Generation (Create Indirect Data Forwarding Tunnel Request (and creation indirect data forwarding tunnel ask Ask): S19).At this point, the forward-path of new MME50 generates life of the instruction unit 52 also to new S-GW30 instruction forwarding communication path At.

Communication lines are arranged between old S-GW20 and new S-GW30 according to the instruction from new MME50, progress in new S-GW30 The processing of diameter (Indirect Tunnel: indirect tunnel).In addition it is also possible to carry out the generation for using communication path with forwarding simultaneously Relevant processing.Later, it is indicated response (the Create Indirect Data Forwarding handled Tunnel Response (creation indirect data forwarding tunnel response): S20).New MME50 is also to being notified of with buffered data Old MME40 notice completed that communication path (Indirect Tunnel) is arranged between old S-GW20 and new S-GW30 Prepare (Context Ack. (context confirmation): S21).Old MME40 refers to old S-GW20 according to the notice from new MME50 The generation for showing the communication path (Indirect Tunnel) between old S-GW20 and new S-GW30, implements the place in old S-GW20 It manages (Modify Bearer:S22).

As a result, generating communication path (Indirect Tunnel (the indirect tunnel between old S-GW20 and new S-GW30 Road): S23), forwarding between new S-GW30 and eNB60 is with communication path (Forwarding Path (forward-path): S24). In addition, the data that eNB60 is received are the states that can be sent to UE90.Therefore, at this stage, old S- can be sent to UE90 The buffered data that GW20 is kept.

When new S-GW30 is received from the buffered data of old S-GW20, the forward process portion 32 of new S-GW30 is via turning Hair communication path sends buffered data to eNB60.Also, the data of eNB60 send sequential control portion 62 and will use via forwarding The data that communication path is sent from new S-GW30 via the usually data transmitted by communication path than being more preferentially sent to UE90(S25).In addition, old S-GW20 is sending the stage terminated using UE90 as the buffered data of destination, to new S-GW30 Sending terminates label.The forward process portion 32 of new S-GW30 is in the case where receiving terminates label, and using UE90 as destination Data similarly, via forwarding communication path to eNB60 send terminate label.Also, the data transmission sequence of eNB60 is controlled Portion 62 processed is judged as the buffered data from old S-GW20 when receiving the end label via the transmission of forwarding communication path It all is sent to eNB60, starts to send to UE90 via the data (S26) usually sent with communication path (S1-U Path). Therefore, eNB60 can be right after having sent to UE90 and being sent to the buffered data of eNB60 with communication path via forwarding UE90 is sent via the data for being usually sent to eNB60 with communication path.

After processing relevant to the transmission of buffered data, a part of the communication path of above-mentioned generation is due to being not required to It wants, therefore is dropped.Firstly, old MME40 it is relevant to the deletion of the location registration of UE90 processing terminate when, start and communicate The relevant processing (S27) of the cutting in path.Specifically, old MME40 carries out old S-GW20 related to the deletion of communication path Instruction, in old S-GW20 carry out it is relevant to the deletion of communication path processing (Delete Bearer Request (deletion Carrying request): S28).As a result, abandoning in the old side S-GW20 for the communication path for carrying out and between P-GW10 The relevant processing of deletion and the forwarding of buffered data and the communication path (Indirect that generates between new S-GW30 Tunnel)(S29).In addition, in new S-GW30, with the reception for terminating label sent from old S-GW20 and to eNB60's Sending is opportunity, or to pass through the stipulated time after the generation of forwarding communication path as opportunity, abandons forwarding communication lines Diameter (Forwarding Path) and the communication path generated to carry out the forwarding of buffered data between old S-GW20 (Indirect Tunnel)(S30).In conclusion in order to which the communication path for sending buffered data to UE90 and being arranged is dropped. In addition, between communication path between P-GW10 and new S-GW30 and new S-GW30 and eNB60 it is usual with communication path after Continue the transmission for the data for UE90.

In conclusion communication system 1 involved in an embodiment of the invention is to carry out communication link with core network Connect and to by resident area from the UE90 (communication terminal) that the 1st region i.e. old area is changed to the i.e. new region in the 2nd region for the purpose of The data on ground send the communication system controlled, include eNB60, are used as and are contained in core network, in new region The base station apparatus being communicatively coupled between UE90 functions；And new S-GW30 and new MME50, as with new region It is arranged in correspondence with, communication path is set between eNB60 and is sent to eNB60 using UE90 as destination via the communication path The communication control units of data function.Also, whether the forward-path that communication control unit includes new MME50 determines Portion 51, at the time of UE90 is moved to new region, that is, UE90 when new region has carried out processing relevant to location registration It carves, determines a need for for the i.e. buffered data of not sent data to UE90 forwarding for the UE90 for once residing in old area Communication path is used in forwarding；The forward-path of new MME50 generates the forward-path generating unit 31 of instruction unit 52 and new S-GW30, makees Functioned for forwarding with communication path generating unit, the forwarding with communication path generating unit by forward-path whether determination unit 51 Be determined as in the case where needing to forward with communication path, carried out between eNB60 with and the usual forwarding for using communication path different With the relevant processing of the generation of communication path；And the forward process portion 32 of new S-GW30, utilize forwarding communication path pair Base station apparatus, that is, eNB60 sends not sent data, that is, buffered data.In addition, the eNB60 as base station apparatus is sent with data Sequential control portion 62, the data send sequential control portion 62 carry out control as follows: via forwarding use communication path from as lead to In the case that the new S-GW30 of letter control device is received using UE90 as the buffered data of destination, sending via usual with logical Believe path send using UE90 as the data of destination before, to UE90 send buffered data.

According to above-mentioned communication system 1, determine whether to generate between new S-GW30 and eNB60 for forwarding for resident The forwarding communication path of the not sent data (buffered data) of UE90 at 1 region.Also, it makes a living in the result of judgement In the case where at forwarding communication path, after generating forwarding communication path, via forwarding communication path from new S- GW30 sends buffered data to eNB60.Also, it is sent in sequential control portion 62 in the data of eNB60, via forwarding communication In the case that path is received using UE90 as the buffered data of destination from new S-GW30, sending via usually using communication path Send using UE90 between the data of destination, to UE90 send buffered data.That is, can sent according to communication system 1 Buffered data is sent to UE90 before the data that new S-GW30 is sent with communication path via usual.

Therefore, it in communication system 1, even if UE90 is the received communication terminal for intermittently carrying out data, can also fit Locality carries out the transmission of data.That is, following data can be received in the correct order: returning before belonging to the 2nd region The not received data that is not received when belonging to 1 region and after resident area is changed to the 2nd region via usual with logical Believe the data that path is sent.Therefore, it can reduce to be sent by the sequence according to mistake using UE90 as data of destination etc. and draw Play a possibility that inconvenient.

In addition, the forward process portion 32 of communication control unit is not sent out being had sent with communication path to eNB60 using forwarding After sending data i.e. buffered data, the end for notifying the transmission of not sent data to terminate is sent to eNB60 and is marked.In addition, eNB60 Data send sequential control portion 62 and carry out control as follows: when the reception marked by end is notified of the hairs of not sent data At the end of sending, to UE90 send via common communication path send using UE90 as the data of destination.

It is set as logical from the new S-GW30 as communication control unit to the eNB60 functioned as base station apparatus as a result, Know that the transmission of not sent data terminates, according to the notice, common communication path is have come to used in eNB60 is directed to UE90 Data transmission structure, thus especially in eNB60, can reduce for confirm not sent data transmission terminate Communication or standby mode.Therefore, being directed to from the not sent data for having used forwarding communication path can successfully be carried out The transmission of UE90 to used common communication path for 90 data transmission transformation.In addition, such as in above-mentioned implementation Illustrated in mode, in the case where via usually first being sent with the data of communication path, need temporarily to keep in eNB60 Using UE90 as the data of destination.Therefore, when successfully carried out to UE90 transmission used forwarding communication path not Send data to UE90 transmission used the transformation of data of common communication path when, the data in eNB60 can be cut down Retention time and maintenance dose.

In addition, in the above-described embodiment, the case where being made of to communication control unit S-GW and MME, is said It is bright.However, can be 3 or more as the device that communication control unit functions.In addition, communication control unit can be by 1 A device is realized.For example, new S-GW30 have as the forward-path in new MME50 whether determination unit 51 function the case where Under, communication control unit can be realized by new S-GW30.

In addition, in the above-described embodiment, having sent to from P-GW10 to old S-GW20 for notifying buffered data On the basis of sending the end label terminated, pass through transmission notice the delaying from old S-GW20 to new S-GW30 for terminating label respectively The transmission for rushing data terminates and is illustrated from new S-GW30 to the structure of the transmission end of the buffered data of eNB60.So And generating to which device terminates to mark and start to send to be not particularly limited.At least eNB60 is notified to buffer from new S-GW30 The transmission of data terminates, and in eNB60, can terminate the standby shape of the buffered data sent via forwarding communication path State.

In addition, in the above-described embodiment, usually using communication path, energy to first generating compared with forwarding communication path Enough first send to eNB60 from the case where data that P-GW10 sends new S-GW30 is illustrated.However, to usual with communication The genesis sequence of path and forwarding communication path is not particularly limited.With usually with communication path and forwarding communication lines The genesis sequence of diameter independently, in eNB60, is sent via forwarding communication path from new S-GW30 having sent to UE90 After buffered data, UE90 is sent via the data usually sent with communication path from new S-GW30, it is suitable so as to prevent Sequence mistakenly sends data.

(other)

In addition, the block diagram of the explanation for above embodiment shows functional block.These functional blocks (constituting portion) can be with It is realized by any combination of hardware and/or software.In addition, the realization rate of each functional block is not particularly limited.That is, each Functional block will physically and/or can also be patrolled by physically and/or a device made of being joined logically together is realized It collects separated more than two devices directly and/or indirectly (for example, wiredly and/or wirelessly) to connect, passes through these multiple dresses It sets to realize.

For example, the new S-GW30, new MME50, eNB60 etc. in an embodiment of the invention, which can be used as, carries out this reality The computer for applying the processing of mode functions.Fig. 6 is an example for showing the hardware configuration of new S-GW30, new MME50, eNB60 Figure.Above-mentioned new S-GW30, new MME50, eNB60 can physically be configured to include processor 1001, memory (memory) 1002, memory (storage) 1003, communication device 1004, input unit 1005, output device 1006 and bus 1007 Deng computer installation.

In addition, in the following description, " device " this wording can be changed to circuit, device (device), unit etc.. New S-GW30, new MME50, eNB60 hardware configuration be configured to each devices comprising one or more diagrams, can also be with structure As not comprising a part of device.

Each function in new S-GW30, new MME50, eNB60 is realized by the following method: in processor 1001, memory Software (program) as defined in reading on 1002 equal hardware, so that processor 1001 carries out operation, and controls communication device 1004 The reading and/or write-in of communication, memory 1002 and the data in memory 1003.

Processor 1001 for example makes operating system act and integrally control computer.Processor 1001 can also be by Central processing unit (CPU:Central comprising interface, control device, arithmetic unit, register with peripheral device etc. Processing Unit) it constitutes.For example, can be realized by processor 1001 forward-path in new MME50 whether determination unit 51 etc..

In addition, processor 1001 reads program (program generation from memory 1003 and/or communication device 1004 to memory 1002 Code), software module or data, execute various processing accordingly.As program, having used executes computer in above embodiment At least part of program in the movement of middle explanation.For example, can be by being stored in memory 1002 and passing through processor The 1001 control programs acted come realize eNB60 data send sequential control portion 62, can also similarly realize other Functional block.Above-mentioned various processing are executed although the description of by 1 processor 1001, but can also be by 2 or more places Reason device 1001 simultaneously or sequentially executes above-mentioned various processing.Processor 1001 can be installed by 1 or more chip.Separately Outside, program can also be sent via telecommunication line from network.

Memory 1002 is computer-readable recording medium, such as can also be by ROM (Read Only Memory: only Read memory), EPROM (Erasable Programmable ROM: erasable programmable ROM), EEPROM (Electrically Erasable Programmable ROM: electrically erasable ROM), RAM (Random Access Memory: random access memory) etc. at least one of constitute.Memory 1002 is referred to as register, cache, master Memory (main storage means) etc..Memory 1002 can save channel radio involved in executable an embodiment of the invention The program (program code) of letter method, software module etc..

Memory 1003 is computer-readable recording medium, for example, can by the CDs such as CD-ROM (compact disk ROM), Hard disk drive, floppy disk, magneto-optic disk (such as compact disk, digital versatile disc, blue light (Blu-ray) (registered trademark) disk, intelligence At least one in card, flash memory (such as card, stick, key driving (Key drive)), floppy disk (Floppy) (registered trademark), magnetic stripe etc. Side is constituted.Memory 1003 is referred to as auxilary unit.Above-mentioned storage medium can be for example comprising memory 1002 And/or database, server and the other media appropriate of memory 1003.

Communication device 1004 (is received for carrying out the hardware of the communication between computer via wired and or wireless network Send out equipment), for example, it is also possible to the referred to as network equipment, network controller, network interface card, communication module etc..For example, communication can be passed through Device 1004 realizes that the forward-path of above-mentioned new MME50 generates instruction unit 52 etc..

Input unit 1005 is to accept the input equipment from external input (for example, keyboard, mouse, microphone, opening Pass, key, sensor etc.).Output device 1006 is to implement the output equipment to external output (for example, display, loudspeaking Device, LED light etc.).In addition, input unit 1005 and output device 1006 can also be integrally formed (for example, touch panel).

In addition, each device such as processor 1001 and memory 1002 is by the bus 1007 for being communicated to information come even It connects.Bus 1007 can be made of single bus, can also be made of between device different buses.

In addition, new S-GW30, new MME50 and eNB60 are configured to comprising microprocessor, digital signal processor (DSP:Digital Signal Processor), ASIC (Application Specific Integrated Circuit: Specific integrated circuit), PLD (Programmable Logic Device: programmable logic device), FPGA (Field Programmable Gate Array: field programmable gate array) etc. hardware, each function can also be realized by the hardware Part or all of block.For example, processor 1001 can be realized by least one of these hardware.

Present embodiment is described in detail above, but it will be apparent to persons skilled in the art that originally Invent the unlimited embodiment illustrated in this manual.The present invention can not departed from through the record of claims institute really It is embodied as correcting and changing form in fixed the spirit and scope of the invention.Therefore, the purpose of the record of this specification is example Show explanation, does not have the meaning of any restrictions to the present invention.

Information notifies the unlimited form/embodiment illustrated in this manual, can also be carried out by other methods. For example, the notice of information can be by physical layer signaling (for example, DCI (Downlink Control Information: downlink Link control message), UCI (Uplink Control Information: uplink control information)), high-level signaling (example Such as, RRC (Radio Resource Control: wireless heterogeneous networks) signaling, MAC (Medium Access Control: matchmaker Body access control) signaling, broadcast message (MIB (Master Information Block: Master Information Block), SIB (System Information Block: system information block)), other signals or these combination implemented.In addition, RRC signaling can also be with Referred to as RRC information, such as can be RRC connection creation (RRC Connection Setup) message, RRC connection reset (RRC Connection Reconfiguration) message etc..

Each form/the embodiment illustrated in this specification also can be applied to LTE (Long Term Evolution: long Phase evolution), LTE-A (LTE-Advanced), SUPER 3G, IMT-Advanced, 4G, 5G, FRA (Future Radio Access, following wireless access), W-CDMA (registered trademark), GSM (registered trademark), CDMA2000, UMB (Ultra Mobile Broadband, Ultra-Mobile Broadband), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, UWB (Ultra-WideBand, ultra wide band), Bluetooth (registered trademark), use the system of other appropriate systems And/or the Successor-generation systems extended accordingly.

Treatment process, timing, process etc. to each form/embodiment illustrated in this manual, reconcilable In the case of, sequence can be replaced.For example, being prompted by the sequence of illustration various the method illustrated in this manual The step of element, be not limited to suggested specific sequence.

For the specific action executed in the present specification by specific device, there is also according to circumstances and by its upper section The case where point (upper node) executes.

It can be from high level (or low layer) to low layer (or high-rise) output information etc..It can also be inputted via multiple network nodes Or output.

Information of input and output etc. can be stored in specific position (for example, memory), can also carry out in management table Management.It can rewrite, update or write afterwards the information etc. of input and output.Exported information etc. can also be deleted.It can also be to it Its device sends inputted information etc..

Can be determined by value represented by 1 bit (0 or 1), can also by Boolean (Boolean:true or False) determined, can also be determined by the comparison (for example, compared with specified value) of numerical value.

Each form/the embodiment illustrated in this specification may be used alone, can also be used in combination, can also basis Executive condition switching uses.In addition, the notice of provisioning information is not limited to explicitly (for example, the notice of " being X ") progress, it can also be with Implicitly (for example, notice without the provisioning information) carries out.

For software, no matter referred to as software, firmware, middleware, microcode, hardware description language, or with other titles Call, should all be broadly construed as be order, command set, code, code segment, program code, program (program), It is subprogram, software module, application, software application, software package, routine program (routine), subprogram (subroutine), right As, executable file, execution thread, process, function etc..

Furthermore, it is possible to via transmission medium transmitting-receiving software, order etc..For example, using coaxial cable, fiber optic cables, double The wireless technologys such as the cable technologies such as twisted wire and Digital Subscriber Line (DSL) and/or infrared ray, wireless and microwave are from website, server Or in the case that other remote sources send software, these cable technologies and/or wireless technology are included in the definition of transmission medium.

Any one in various different technology can be used to indicate the information illustrated in this specification, signal Deng.For example, voltage, electric current, electromagnetic wave, magnetic field or magnetic-particle, light field or photon or any combination of these can be passed through To indicate data involved in above description entirety, order, instruction (command), information, signal, bit, symbol (symbol), chip (chip) etc..

In addition, to the term illustrated in this manual and/or term needed for understanding this specification, can with phase The term of the same or similar meaning is replaced.For example, channel and/or symbol (symbol) can be signal (signal).This Outside, signal can be message.In addition, component carrier (CC) is properly termed as carrier frequency, cell etc..

The terms such as " system " and " network " used in this specification use in which can be interchanged.

In addition, to information, the parameter etc. that illustrate in this manual phase can also be passed through by absolute value representation The relative value of specified value is indicated, can also be indicated by corresponding other information.For example, radio resource can be by rope Attract instruction.

Title used in above-mentioned parameter is all non-limiting on any point.In turn, using the number of these parameters Formula etc. is sometimes also different from the content that this specification is expressed.Various channel (examples can be identified by title appropriate Such as, PUCCH, PDCCH etc.) and information element (for example, TPC etc.), therefore distribute to these various channels and information is wanted The various titles of element are all non-limiting on any point.

For user terminal, those skilled in the art are also called with following terms sometimes: subscriber station, mobile unit It is (mobile unit), subscriber unit, radio-cell, remote unit, mobile device, wireless device, wireless telecom equipment, long-range Equipment, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, hand-held set, user agent (user Agent), mobile client, client or some other terms appropriate.

Term as " judgement (determining) ", " determining (determining) " used in this specification is sometimes Also the case where including diversified movement." judgement ", " decision " for example may include that will be calculated (calculating), (computing), processing (processing), export (deriving), investigation are calculated (investigating), search for (looking up) (for example, search in table, database or other data structures), really The item for recognizing (ascertaining) is considered as " judgement ", the item of " decision " etc..In addition, " judgement ", " decision " may include by It received (receiving) (for example, receiving information), send (transmitting) (for example, sending information), input (input), (output) is exported, the item of access (accessing) (for example, data in access memory) is considered as and " sentences It is disconnected ", the item of " decision ".In addition, " judgement ", " decision " may include that will be solved (resolving), selection (selecting), (choosing) is selected, the item establishing (establishing), compare (comparing) etc. is considered as and " sentences It is disconnected ", the item of " decision ".That is, " judgement ", " decision " may include " judgement ", " decision " item of any movement.

One shear deformation of term or these terms as " connection (connected) ", " in conjunction with (coupled) " is intended to It indicates all direct or indirect connections or combination between 2 or 2 or more elements, may include in mutual " connection " Or the case where there are 1 or 1 or more intermediate elements between 2 elements of " in conjunction with ".Combination or connection between element can To be combination or connection physically, it is also possible to combination or connection in logic, or be also possible to these combination.At this In the case of used in specification, for 2 elements, it may be considered that by using 1 or 1 or more electric wire, cable and/ Or printing electrical connection, and as some non-limiting and non-inclusive example by using with wireless frequency-domain, microwave region The electromagnetic energy of the electromagnetic energy of wavelength in domain and light (including visual and not visible both sides) region etc., to carry out mutually " even Connect " or " in conjunction with ".

Reference signal can also be referred to as RS (Reference Signal), can also be known as according to applied standard Pilot tone (Pilot).

" according to " used in this specification is such to be recorded, unless otherwise stated, not being the meaning of " according only to ". In other words, " according to " such record means " according only to " and " according at least to " both sides.

For any reference for the element for having used the addresses such as " first ", " second " used in this specification, it is not yet All limit the quantity and sequence of these elements.These exhale referred to as distinguish method easy between 2 or more elements and It is used in this specification.Therefore, for the reference of the first and second elements do not indicate to be only capable of taking herein 2 elements or The first element must be prior to the second element under any form.

In addition, when using " including (include) " in this specification or claims, " including (including) " and its when the term of deformation, be intended to mean that in the same manner as these terms and " with (comprising) " " including Property ".In addition, the term used in this specification or claims " or (or) " means it is not exclusive or.

In the present specification, in addition to based on context or technology can clearly learn the case where there is only a devices with It outside, also include multiple devices.

In the entirety of the disclosure, unless based on context can clearly learn that expression is single, otherwise also comprising multiple Situation.

Label declaration:

1 ... communication system, 10 ... P-GW, 20 ... old S-GW, 30 ... new S-GW, 31 ... forward-path generating units, 32 ... turn Send out processing unit, 40 ... old MME, 50 ... new MME, 51 ... forward-paths generate whether determination unit, 52 ... forward-paths generate indicate Portion, 60 ... eNB, 61 ... forward-path generating units, 62 ... data send sequential control portion, 90 ... UE.

Claims (2)

1. a kind of communication system, the communication system is communicatively coupled with core network, and to resident area from the 1st region It is changed to the communication terminal in the 2nd region to be controlled for the data transmission of destination, wherein the communication system includes

Base station apparatus carries out communication link in the 2nd region it includes within the core network between the communication terminal It connects；And

Communication control unit is arranged in correspondence with the 2nd region, communication path is arranged between the base station apparatus, And sent to the base station apparatus using the communication terminal as the data of destination via the communication path,

The communication control unit includes

With communication path, whether determination unit determines whether at the time of the communication terminal is moved to 2 region for forwarding The forwarding communication path different from common communication path is needed, the forwarding is used for communication path to the communication terminal Not sent data of the forwarding for the communication terminal for once residing in the 1st region；

Forwarding communication path generating unit, whether determination unit is judged to needing the forwarding with communication path by the forwarding In the case where with communication path, place relevant with the generation of the forwarding communication path is carried out between the base station apparatus Reason；And

Forward process portion sends the not sent data to the base station apparatus using the forwarding communication path,

The base station apparatus includes

Data send sequential control portion, the control being discussed below: that is, setting via between the communication control unit The forwarding set with communication path from the communication control unit receive using the communication terminal as described in destination not In the case where sending data, led to sending via what the common communication path was sent from the communication control unit with described Before believing the data that terminal is destination, Xiang Suoshu communication terminal sends the not sent data.

2. communication system according to claim 1, wherein

The base station apparatus is sent out using the forwarding communication path in the forward process portion of the communication control unit After having sent the not sent data, the transmission of the not sent data is notified to terminate the base station apparatus,

At the end of the transmission for being notified of the not sent data from the communication control unit, the number of the base station apparatus Carry out control as follows according to sequential control portion is sent: Xiang Suoshu communication terminal, which is sent, to be led to via the common communication path from described Believe control device send using the communication terminal as the data of destination.