CN103491647B - A kind of method reducing call signaling expense - Google Patents
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- CN103491647B CN103491647B CN201310407516.3A CN201310407516A CN103491647B CN 103491647 B CN103491647 B CN 103491647B CN 201310407516 A CN201310407516 A CN 201310407516A CN 103491647 B CN103491647 B CN 103491647B
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Abstract
A kind of communication means reducing call signaling expense, is utilized the terminal direct connection D2D mechanism directly paged terminal in location to be currently located community by Mobility Management Entity MME and realizes communication.The method is the function first strengthening MME, following function can be realized: after idle mode terminals close together and connection mode terminal set up D2D connection, the cell ID Cell ID of community, idle mode terminals place can be reported MME by base station by connection mode terminal；So, when the downlink data of the available free mode terminal of network side arrives, MME only initiates paging to this community, idle mode terminals place, and to reduce call signaling expense, the signaling reducing base station processes load, improves paging efficiency.The application scenarios of the inventive method: idle mode terminals and the connection mode terminal of setting up D2D connection are positioned at same community or lay respectively at two neighbor cells.
Description
Technical field
The present invention relates to a kind of communication means reducing call signaling expense, exactly, relate to a kind of utilization
D2D mechanism assists the method for paging, is used for reducing call signaling expense, belongs to the technical field of radio communication.
Background technology
In the next generation mobile communication standard that 3GPP standardization body formulates: Long Term Evolution LTE (Long Term
Evolution) in network, two kinds of business models, i.e. idle mode and connected modes for terminal definitions.Even
Connect mode terminal received by the wireless link set up between base station or send data；Idle mode terminals selects
Select resident to certain specific cell, and periodically monitor paging channel, when network side has this idle mode terminals
Downlink data arrive time, by Mobility Management Entity MME (Mobility Management Entity) send out
Play beep-page message, notify that this idle mode terminals transfers to connection mode, thus set up wireless link and receive
Data.
Tracking area is that LTE system manages the concept proposed by terminal location.Each tracking area is typically by many
Individual community is formed, for avoiding terminal frequently to carry out the operation of location updating when minizone is moved.Work as end
When end is in idle pulley, this terminal needs to read the relevant information of current persistent district, if the most resident
The tracking area of community changes, then this terminal needs to report new tracking area to network side.Therefore, core
The tracking area that each terminal is currently located known at any time by net.When the downlink data that network side has terminal arrives,
MME initiates paging in all communities in tracking terminal district.
Seeing Fig. 1 and Fig. 2, the paging detailed process introducing prior art is as follows: only know terminal due to MME
The tracking area being currently located, and it is not aware which concrete community that terminal is positioned in current tracking area, because of
This, MME each cell base station in tracking area initiates " paging request " message, then is divided by each base station
Not in place Cell Broadcast CB " paging " information.Then, the target terminal receiving " paging " information make
Go out to respond, and reply " service request information, thus set up wireless link for receiving data.
But, prior art is during paging is initiated in the MME all communities in tracking terminal district, extremely
There is problems in that less
When MME initiates paging, it is desirable to all base stations in paged tracking terminal district are at its cell coverage area
Interior broadcast " paging " message, but, terminal can only receive " paging " of its place cell base station broadcast transmission
Message, wastes substantial amounts of call signaling the most undoubtedly, also reduces paging efficiency, adds base station simultaneously
Process load.Further, due to paging channel and other down channel shared channel resources, it is also reduced
The capacity of its down channel.
Summary of the invention
In view of this, it is an object of the invention to provide a kind of communication means reducing call signaling expense, the party
Method it is crucial that utilize in LTE system introduce between terminal directly communicate D2D technology, D2D
Support idle mode and connected mode terminal simultaneously.Under D2D mechanism, by the control of system, two away from
Terminal close to from directly can communicate with reuse pattern resource, and D2D mechanism thus can be utilized to assist
Paging, thus reduce call signaling expense, the signaling reducing base station processes load, reduces network cost.
In order to achieve the above object, the invention provides a kind of communication means reducing call signaling expense, its
It is characterised by: described method is by Mobility Management Entity MME (Mobility Management Entity)
Utilize terminal direct connection D2D (Device-to-Device) mechanism directly to position paged terminal and be currently located community
And realize communication；The method is the function first strengthening MME so that it is be capable of following function: distance
After nearer idle mode terminals and connection mode terminal set up D2D connection, connection mode terminal can be by sky
The cell ID Cell-ID of not busy community, mode terminal place reports MME by base station；So, network is worked as
When the downlink data of the available free mode terminal in side arrives, MME only sends out to this community, idle mode terminals place
Playing paging, to reduce call signaling expense, the signaling reducing base station processes load, improves paging efficiency；Institute
The method of stating includes following operative step:
(1) idle mode terminals and connection mode terminal set up D2D connection, and are exchanged with each other Cell-ID；
(2) connection mode terminal sends " D2D connection establishment " message to place cell base station, in this message
Carry the Cell-ID of community, idle mode terminals place；
(3) " D2D connection establishment " message is transmitted to MME by base station；
(4), when the downlink data of the available free mode terminal of network side arrives, MME is to receiving this downlink data
Target terminal place cell base station send " paging request " message, this message is carried target terminal mark,
And start T1 timer；
(5) target terminal place cell base station receives this " paging request " message, at cell coverage area
Interior broadcast " paging " message；
(6) paged idle pulley target terminal receives the most resident cell base station according to self identification
After " paging " message sent, send to this cell base station and " service request information, should " seek with response
Exhale " message；
(7) this cell base station forwards and " services request information to MME；
(8) MME terminates T1 timer, paging success.
Idle mode terminals and connection mode terminal that the described D2D of foundation connects are positioned at same community or difference
It is positioned at two neighbor cells.
Described step (4) includes operations described below content: after T1 timer initiation, if this T1 timer exists
When arriving the setting time, MME is still without receiving " service request information, the then MME that base station returns
Resend " paging request " message, and restart T1 timer, be i.e. repeated execution of steps (4)；As
Fruit reaches maximum repeated paging number of times, and MME still confiscates " service request information, then this paging failure.
Described method also includes operations described below content: when idle mode terminals and connection mode terminal release D2D
During connection, if these two terminals are positioned at same community, then sent out to place cell base station by connection mode terminal
Sending " D2D connects releasing " message, base station " D2D connects releasing " message should be transmitted to MME again；
If these two terminals are positioned at neighbor cell, then sent " D2D by connection mode terminal to place cell base station
Connect and release " message, then it is transmitted to idle mode terminals place cell base station by this base station by X2 interface,
Then by idle mode terminals place cell base station again should " D2D connects releasing " information reporting to MME.
Described method also includes operations described below content: when idle mode terminals and connection mode terminal release D2D
After connection, when the downlink data of the most available free mode terminal of network side arrives, there are following two kinds of paging skies
The method of not busy mode terminal:
For delay sensitive business, MME uses traditional paging methods, i.e. owning in tracking terminal district
Paging is initiated in community；
Business insensitive for time delay, first MME sends out to the community, idle mode terminals place originally reported
Play paging, start T2 timer simultaneously；If when T2 timer arrives the setting time, MME does not also have
Have and receive " service request information, the initiation of MME other communities in tracking terminal district again that base station returns
Paging；And the timing duration of T2 timer is less than T1 timer.
Described " D2D connection establishment ", " D2D connects releasing ", " paging request ", " paging " and " service
Request " various message be used for describing related protocol function, not with in actual standard agreement various specifically
The message of title is corresponding.
Compared with prior art, the innovation key technology of the communication means that the present invention reduces call signaling expense is:
Utilize the D2D technology of directly communication between terminal introduced in LTE system so that idle pulley is eventually
End can report what it was currently located by means of setting up the connection mode terminal that D2D connects therewith to network side
Community, thus avoid when this idle mode terminals is carried out paging, it is all that it is currently located in tracking area
Cell base station will broadcast " paging " message.
The inventive method has the advantage that MME utilizes terminal direct connection D2D mechanism directly location paged
The community that terminal is currently located, and issue " paging request " message, thus avoid to paged terminal whole
Multiple communities in individual tracking area are broadcasted, and have both reduced call signaling expense and power attenuation, reduce base station
Signaling process load, also improve paging efficiency, reduce network cost.
Remove beyond current persistent district it addition, also make this " paging " message no longer take in tracking area
The down channel resources of other community, is conducive to improving power system capacity.Furthermore, the present invention need not change and " seeks
Call for asking ", the structure of the various signaling messages of " paging " and " service request " and the processing method of terminal thereof,
Have only to the correlation function of MME is upgraded, it becomes possible to be smoothly introduced and realize the function of the present invention,
Also intercommunication and compatibility issue will not be produced.
Therefore, operating procedure of the present invention is simple, easy, practical, has good popularizing application prospect.
Accompanying drawing explanation
Fig. 1 is the cellular network architecture composition schematic diagram of paging in prior art: MME is to target
All cell base stations in the tracking area at terminal place send " paging request " message, and each base station is respectively
" paging " message is broadcasted in respective cell.
Fig. 2 is the schematic flow sheet of paging in prior art: similar with Fig. 1, and MME is first to mesh
All cell base stations in the tracking area at mark terminal place send " paging request " message, the most again by respectively
Individual base station broadcasts " paging " message respectively in respective cell.It is backward that target terminal receives " paging " message
Current resident cell base station sends and " services request information, and turned by the most resident cell base station
Issue MME, thus complete paging.
Fig. 3 (A), (B) are that the present invention utilizes D2D mechanism to assist the cellular network two kinds of paging method respectively
Application scenarios: the terminal setting up D2D connection is positioned at two schematic diagrams of same community and neighbor cell.
Fig. 4 (A), (B) are that the present invention utilizes D2D mechanism to assist paging method at Fig. 3 (A), (B) respectively
Two kinds of application scenarios, i.e. set up idle mode terminals that D2D connects and connection mode terminal lays respectively at same little
The operating procedure sequential chart of district and neighbor cell.
Fig. 5 (A), (B) are to release idle mode terminals and the connection mode that D2D connects in the methods of the invention
When formula terminal lays respectively at same community and neighbor cell, MME is reported to release two operations that D2D connects
Step sequential chart.
Fig. 6 (A), (B) are to release in the methods of the invention after D2D connects for the insensitive business of time delay
Two kinds of paging flow process: Fig. 6 (A) are that MME receives page response within the time that intervalometer T2 specifies,
Fig. 6 (B) is that MME is not received by page response within the time that intervalometer T2 specifies.Need explanation
: after releasing D2D connection, the paging flow process for delay sensitive business is the traditional method shown in Fig. 2.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with the accompanying drawings with embodiment pair
Technical solution of the present invention is described in further detail.
The present invention is a kind of communication means reducing call signaling expense: by Mobility Management Entity MME
(Mobility Management Entity) utilizes the D2D mechanism directly paged terminal in location to be currently located little
District and realize communication.The method is the function first strengthening MME so that it is be capable of following function: distance
After nearer idle mode terminals and connection mode terminal set up D2D connection, connection mode terminal can be by sky
The cell ID Cell-ID of not busy community, mode terminal place reports MME by base station；So, network is worked as
When the downlink data of the available free mode terminal in side arrives, MME only sends out to this community, idle mode terminals place
Playing paging, to reduce call signaling expense, the signaling reducing base station processes load, improves paging efficiency.
See Fig. 3, introduce two kinds of application scenarios of the inventive method:
Fig. 3 (A) be set up D2D connect idle mode terminals and connection mode terminal be positioned at same community
Situation: in " D2D connection establishment " message, the most resident by idle mode terminals of connection mode terminal
Community (the same services community being i.e. currently located with connection mode terminal) is reported to MME.So, net is worked as
When network side needs paging idle mode terminals, it is only necessary to send to the community that idle mode terminals is the most resident and " seek
Exhale request information, then by this Cell Broadcast CB " paging " message.
Fig. 3 (B) be set up D2D connect idle mode terminals and connection mode terminal lay respectively at two
The situation of neighbor cell: in " D2D connection establishment " message, connection mode terminal is by idle mode terminals
Current persistent district (being i.e. different from the Serving cell being currently located of this connection mode terminal) is reported to MME.
So, when network side needs paging idle mode terminals, it is only necessary to the most resident little of idle mode terminals
District sends " paging request " message, then by this Cell Broadcast CB " paging " message.
See Fig. 4 (A), introduce the inventive method concrete operation step at Fig. 3 (A) application scenarios:
(1) idle mode terminals UE2 and connection mode terminal UE 1 set up D2D connection, and are exchanged with each other
Cell-ID；
(2) connection mode terminal UE 1 sends " D2D connection establishment " message to place cell base station, and this disappears
Breath carries the Cell-ID of community, idle mode terminals UE2 place；
(3) " D2D connection establishment " message is transmitted to MME by base station；
(4), when the downlink data of the available free mode terminal of network side arrives, MME is to this target terminal UE2
Place cell base station sends " paging request " message, carries target terminal UE2 mark, and open in this message
Dynamic T1 timer；
(5) target terminal UE2 place cell base station receives this " paging request " message, at MPS process
In the range of broadcast " paging " message；
(6) paged idle pulley target terminal UE2 receives the most resident community according to self identification
After " paging " message that base station is sent, send to this cell base station and " service request information, be somebody's turn to do with response
" paging " message；
(7) this cell base station forwards and " services request information to MME；
(8) MME terminates T1 timer, paging success.
The sequential that Fig. 4 (B) is shown is exactly the inventive method concrete operations at Fig. 3 (B) application scenarios
Step, its difference with Fig. 4 (A) simply: connection mode terminal UE 1 and idle mode terminals UE2 divide
Not being positioned at two neighbor cells, therefore MME is after knowing the current persistent district ID of UE2, is initiating
During for the paging of UE2, directly " paging request " message is sent to the current area of UE2, no longer
Need to be sent simultaneously to the current area of UE1.Remaining sequential is all identical.Therefore repeat no more.
See Fig. 5, introduce and the inventive method reports MME release two operating procedure sequential that D2D connects.
Fig. 5 (A) shows: when idle mode terminals UE2 and connection mode terminal UE 1 release D2D
During connection, both are positioned at same community, are now sent to place cell base station by connection mode terminal UE 1
" D2D connects releasing " message, this base station " D2D connects releasing " message should be transmitted to MME again.
Fig. 5 (B) shows: when connection mode terminal UE 1 and idle mode terminals UE2 are positioned at adjacent
During community, UE1 send " D2D connects releasing " message to place cell base station, then by this base station eNodeB 1
It is transmitted to UE2 place cell base station eNodeB2, then by UE2 place cell base station by X2 interface
ENodeB2 again should " D2D connects releasing " information reporting to MME.
See Fig. 6 (A) and (B), introduce the operations described below content of the inventive method respectively: when idle mould
After formula terminal UE 2 and connection mode terminal UE 1 release D2D connection, the most available free pattern of network side
When the downlink data of terminal UE 2 arrives, the method having following two kinds of paging idle mode terminals UE2:
For the business of delay sensitive, MME uses traditional paging methods, i.e. institute in tracking terminal district
Community is had to initiate paging (as shown in Figure 2).
Business insensitive for time delay, MME is first to the community, idle mode terminals UE2 place originally reported
Initiate paging, start T2 timer simultaneously；Now can produce the paging flow process of two kinds of different sequential: in timing
In the device T2 stipulated time, MME receives page response and MME is not received by page response.
The first is within the T2 timer setting time, and MME receives the sequential such as Fig. 6 (A) of page response
Shown in: " paging request " message is only sent to release community the most resident for UE2 before D2D connects by MME,
This cell base station broadcasts " paging " message carrying target terminal mark in its coverage, paged
After idle pulley target terminal receives this " paging " message according to self identification, send " clothes to cell base station
Business request information, should " paging " message with response.This cell base station forwards " service request information again
This " operation of service request information just stopping T2 timer is received to MME, MME.
The second is that MME is not received by sequential such as Fig. 6 of page response when T2 timer sets the time
(B), shown in: now, do not receive from UE2's owing to releasing community the most resident for UE2 before D2D connects
" service request information illustrates UE2 already out Liao Gai community, thus MME needs the tracking area to UE2
In other communities initiate paging.It should be understood that the timing duration of this T2 timer is less than T1 timing
Device.
Especially, it should be noted that: " D2D connection establishment message " that the present invention mentions, " D2D connects releasing
Message ", " paging request message ", " beep-page message " and " service request information " be used to describe relevant association
The function of view, the most corresponding with the concrete message in the communication protocol of prior art or actual standard.
Claims (6)
1. the communication means reducing call signaling expense, it is characterised in that: described method is by mobility
Management entity MME (Mobility Management Entity) utilizes terminal direct connection D2D mechanism the most fixed
The paged terminal in position is currently located community and realizes communication；The method is the function first strengthening MME, makes
It is capable of following function: idle mode terminals close together and connection mode terminal are set up D2D and connected
After, the cell ID Cell-ID of community, idle mode terminals place can be passed through base station by connection mode terminal
Report MME；So, when the downlink data of the available free mode terminal of network side arrives, MME is only to this
Paging is initiated in community, idle mode terminals place, and to reduce call signaling expense, the signaling reducing base station processes
Load, improves paging efficiency；Described method includes following operative step:
(1) idle mode terminals and connection mode terminal set up D2D connection, and are exchanged with each other Cell-ID；
(2) connection mode terminal sends " D2D connection establishment " message to place cell base station, in this message
Carry the Cell-ID of community, idle mode terminals place；
(3) " D2D connection establishment " message is transmitted to MME by base station；
(4), when the downlink data of the available free mode terminal of network side arrives, MME is to receiving this downlink data
Target terminal place cell base station send " paging request " message, this message is carried target terminal mark,
And start T1 timer；
(5) target terminal place cell base station receives this " paging request " message, at cell coverage area
Interior broadcast " paging " message；
(6) paged idle pulley target terminal receives the most resident cell base station according to self identification
After " paging " message sent, send to this cell base station and " service request information, should " seek with response
Exhale " message；
(7) this cell base station forwards and " services request information to MME；
(8) MME terminates T1 timer, paging success.
Method the most according to claim 1, it is characterised in that: the described free time setting up D2D connection
Mode terminal and connection mode terminal are positioned at same community or lay respectively at two neighbor cells.
Method the most according to claim 1, it is characterised in that: described step (4) includes operations described below
Content: after T1 timer initiation, if this T1 timer is when arriving the setting time, MME is still without connecing
Receive that base station returns " service request information, then MME resends " paging request " message, and weight
New startup T1 timer, i.e. repeated execution of steps (4)；If reaching maximum repeated paging number of times, MME
Still confiscate " service request information, then this paging failure.
Method the most according to claim 1, it is characterised in that: in described method also includes operations described below
Hold: when idle mode terminals and connection mode terminal release D2D connection, if these two terminals are positioned at same
One community, then sent " D2D connects releasing " message, base station by connection mode terminal to place cell base station
" D2D connects releasing " message should be transmitted to MME again；If these two terminals are positioned at neighbor cell,
Then sent " D2D connects releasing " message by connection mode terminal to place cell base station, then led to by this base station
Cross X2 interface and be transmitted to idle mode terminals place cell base station, then by community, idle mode terminals place
Base station again should " D2D connects releasing " information reporting to MME.
Method the most according to claim 4, it is characterised in that: in described method also includes operations described below
Hold: after idle mode terminals and connection mode terminal release D2D connection, the most available free mould of network side
When the downlink data of formula terminal arrives, the method having following two kinds of paging idle mode terminals:
For delay sensitive business, MME uses traditional paging methods, i.e. owning in tracking terminal district
Paging is initiated in community；
Business insensitive for time delay, first MME sends out to the community, idle mode terminals place originally reported
Play paging, start T2 timer simultaneously；If when T2 timer arrives the setting time, MME does not also have
Have and receive " service request information, the initiation of MME other communities in tracking terminal district again that base station returns
Paging；And the timing duration of T2 timer is less than T1 timer.
Method the most according to claim 4, it is characterised in that: described " D2D connection establishment ", " D2D
Connect and release ", " paging request ", the various message of " paging " and " service request " are used for describing relevant association
View function, not corresponding with the message of the various specific names in actual standard agreement.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US10660146B2 (en) * | 2014-03-21 | 2020-05-19 | Samsung Electronics Co., Ltd. | Methods and apparatus for device to device synchronization priority |
| CN105491664B (en) * | 2014-10-13 | 2019-04-26 | ***通信集团山东有限公司 | A kind of method and apparatus of call terminal |
| CN105611632A (en) * | 2014-11-19 | 2016-05-25 | 中兴通讯股份有限公司 | Paging method, paging device and paging system |
| CN107005930B (en) * | 2015-01-12 | 2020-09-08 | 华为技术有限公司 | Method for paging user equipment and MME |
| CN107079441A (en) * | 2015-01-13 | 2017-08-18 | 华为技术有限公司 | Method, access point and terminal that resource is indicated |
| CN107409334B (en) * | 2015-03-27 | 2020-07-24 | 阿尔卡特朗讯 | Terminal, terminal operation method, transmission coordinator device, base station, and operation method of transmission coordinator device |
| CN104812069B (en) * | 2015-05-25 | 2019-01-15 | 宇龙计算机通信科技(深圳)有限公司 | Position management method, paging method, device and the terminal of terminal |
| CN106714304A (en) * | 2015-07-30 | 2017-05-24 | 中国电信股份有限公司 | LTE paging method and system |
| US10609675B2 (en) | 2015-09-25 | 2020-03-31 | Huawei Technologies Co., Ltd. | Paging method, synchronization method, and user equipment for device to device communication |
| WO2018170858A1 (en) | 2017-03-23 | 2018-09-27 | Oppo广东移动通信有限公司 | Paging method and paging apparatus |
| WO2018170902A1 (en) * | 2017-03-24 | 2018-09-27 | Oppo广东移动通信有限公司 | Method and device for paging |
| WO2018223401A1 (en) * | 2017-06-09 | 2018-12-13 | 华为技术有限公司 | Paging message sending method, paging message receiving method, terminal and system |
| CN113141583A (en) * | 2020-01-19 | 2021-07-20 | 大唐移动通信设备有限公司 | Information processing method, device, equipment and computer readable storage medium |
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| US8666403B2 (en) * | 2009-10-23 | 2014-03-04 | Nokia Solutions And Networks Oy | Systems, methods, and apparatuses for facilitating device-to-device connection establishment |
| CN102149040A (en) * | 2010-02-05 | 2011-08-10 | 电信科学技术研究院 | Paging method, system and device for machine type communication device |
| GB2496153B (en) * | 2011-11-02 | 2014-07-02 | Broadcom Corp | Device-to-device communications |
| CN102547984B (en) * | 2012-02-23 | 2015-03-11 | 华为技术有限公司 | Method and device for paging in device-to-device communication |
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