CN1619993A - Method of direct communication between terminals based on network controlling - Google Patents
Method of direct communication between terminals based on network controlling Download PDFInfo
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- CN1619993A CN1619993A CNA200310116466XA CN200310116466A CN1619993A CN 1619993 A CN1619993 A CN 1619993A CN A200310116466X A CNA200310116466X A CN A200310116466XA CN 200310116466 A CN200310116466 A CN 200310116466A CN 1619993 A CN1619993 A CN 1619993A
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- terminal
- rnc
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- du2u
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
A network control based interterminal direct communication method in TDD CDMA communication system contains following steps, if MSC finds the two terminals to be communicated are in same RNC field, MSC reports RNC to make further judgment, to check whether two terminals are in the same or adjoint base station, if they are in the same or adjoint base station, RNC transmits message to two terminals for establishing link. Said invention can reduce transmission power of mobile telephone set and interference to other user.
Description
Technical field
The standardization effort that third generation mobile is carried out in third generation partner plan (hereinafter to be referred as 3GPP), comprising Wideband Code Division Multiple Access (WCDMA) (being called for short WCDMA) system, and TD SDMA (hereinafter to be referred as TD-SCDMA) system.TD-SCDMA is a kind of time division duplex (TDD) system, and WCDMA also has tdd mode.
Background technology
In the standard of existing C DMA mobile communication system, between the terminal there be not direct communication.All communication all is to finish by the transfer of base station and network, even the ten minutes that two residing positions of terminal are separated by is near.In PHS (personal hand-held phone) system, can direct communication between two terminals, but communication between terminals is not to be subjected to network control.Because the frequency that communication between terminals is used is not the frequency that signal post uses between terminal and the base station, so communication between terminals can not cause interference to communicating by letter of base station and terminal.
Fig. 3 is the communication mode in the existing standard.Fig. 4 is the communication mode after improving.In existing systems, if the distance between two terminals (302,303) is closer, and two terminals edge of (301) coverage cell in the base station all, terminal 301 sends to base station (304) with data, sends the data to terminal 302 by the base station again.Vice versa.Because terminal is distant apart from the base station, all is able to bigger transmitting power and transmits data.These emitted energies disturb exactly to other user so.As shown in Figure 4, two terminal direct communications, because close together, the energy of required transmitting (406) is just little.Only keep the link of signaling between terminal and the base station, make required power still big though deliver a letter, signaling seldom, so total transmission of power is also very little.Like this, promptly saved the energy of battery of mobile phone, also reduced interference, thereby can improve the throughput of sub-district others.
Summary of the invention
The method that the purpose of this invention is to provide a kind of terminal room direct communication of control Network Based.
For achieving the above object, a kind of method of the terminal room direct communication of control Network Based in the cdma communication system of TDD comprises step:
If two end that MSC finds to need communication are in same RNC territory, MSC notice RNC does further judgement;
RNC checks whether two terminals are in the same or adjacent base station;
If two terminals are in the same or adjacent base station, RNC sends the message of directly setting up link to two terminals.
The present invention makes that by increase a kind of new function in existing systems mobile phone can reduce transmitting power under some specific situations, reduces the interference to other users, thereby reaches the throughput that improves whole system.And saved the energy content of battery of user mobile phone.
Description of drawings
When Fig. 1 had described two terminal close together, at MSC, RNC's etc. was down auxiliary, finishes the signaling procedure that DCL is set up.
Fig. 2 is the network-assisted flow chart of setting up DCL.
Fig. 3 is two terminal close together, and when being positioned at the edge, sub-district, the communication scheme of existing system.
Fig. 4 is two terminal close together, and when being positioned at the edge, sub-district, allows the schematic diagram of terminal direct communication.
Embodiment
The invention provides a kind of method, in call link---in the initial process, if there is reasonable wireless channel in the network discovery between two terminals, so pass through corresponding instruction, make directly to connect between these two terminals, and under the control of network, communicate.
In the process that realizes this invention, function that some are new or algorithm, signalings etc. need join in some physical modules, do some explanations below:
The directly pre-judgement of communication between the √ terminal
In the process that call link is set up, network must be able to guess whether two terminals exist the possibility of direct communication.If two residing positions of terminal are closer, then might carry out direct communication.So network must be determined the residing position of terminal earlier.But because the disparate modules in the network is different for the degree of the details of the residing location learning of terminal, so the pre-function of judging is to finish by the mutual cooperation of two-layer different entities.
Base station controller (being called for short MSC) belongs to core net (being called for short CN).Radio network controller (being called for short RNC) belongs to wireless access network (being called for short RAN) part.A plurality of RNC can receive on the MSC.User terminal (or claiming mobile phone User Equipment to be called for short UE) is linked on the RNC by base station (being called for short Node B).When call link was set up, MSC only knew the RNC at UE place.RNC then knows the base station of the sub-district at UE place.
In the process that call link is set up, if MSC need to find two UE of communication to be in same RNC territory, send suitable message can for this RNC, notice RNC does further judgement again.After RNC receives the message of MSC, check whether two UE are in the same or adjacent base station.If two UE are again under the covering of same base station or adjacent base station, RNC thinks between these two UE might direct communication, and sends the message of directly setting up link to their.Otherwise RNC notifies MSC, the impossible direct communication of these two UE, and MSC receives that this message has, and carries out the foundation of link by normal method.
The trial that DCL is set up between the √ terminal
UE after receiving the message of directly setting up link, calling UE according in the message with parameter, as timeslot number and spreading code etc., on channel appointed, send the request message connect.Called UE is reception information on channel appointed then.Called UE is then sent the message of response after receiving the message that the request of calling UE connects.After calling UE is received receiveing the response of called UE, then---UE thinks can set up direct communication link between two UE.If calling UE increases transmitting power one by one, until the maximum transmission power that DU2U allowed, still do not receive the response of called UE, think that then DCL can't set up.Whether link no matter successfully set up, all the result is reported to RNC, report to MSC by RNC again.This process is called as: direct communication connects (the DU2U Connection Setup) process of foundation.
In the DU2U Connection Setup process, the maximum transmission power that calling UE allows to use can be passed to UE as parameter by RNC when notice UE sets up directly link.Also can broadcast at the BCH common channel by system.This value is less than the maximum power that allows emission between UE and the base station.
√ is a message of setting up the link definition between the terminal
Among the present invention, some message have been increased, to realize the function of two UE energy direct communication.
(1)DU2U?Indicator
This message is the message of a RANAP (Radio Access Network ApplicationPart) agreement.It is used for when call link is set up two UE that process finds communication as MSC from same RNC territory, and whether MSC notice RNC does further inspection, may directly communicate by letter to judge these two UE.
The main information that this message comprises has:
Need the further sign of judgement
The number of calling UE (Calling UE ID)
The number of called UE (Called UE ID)
(2)DU2U?Connection
This message is the message of a RANAP (Radio Access Network ApplicationPart) agreement.It is the DU2U Indicator message that RNC is used to respond MSC.After the direct link of two UE was set up successfully, two UE of RNC notice MSC had entered the state of direct communication; When RNC found that there be not direct communication possible in two UE, after perhaps two UE attempted setting up the link failure, RNC notified two UE of MSC can not carry out direct communication, need carry out according to normal communication link.
The main information that this message comprises has:
UE sets up result's (success or unsuccessful) of DCL
The number of calling UE (Calling UE ID)
The number of called UE (Called UE ID)
(3)DU2U?Setup?Request
This message is a RRC (Radio Resource Control) protocol message.When RNC found that two UE that need communicate by letter might directly communicate, RNC notified UE with this message, makes it carry out the connection of DCL.
The main information that this message comprises has:
Opposite end UE-Id
The time slot that transmits and adopt
The number of the spreading code that adopts transmits
The time slot that received signal adopts
(4)DU2U?Setup?Response
This message is a RRC (Radio Resource Control) protocol message.UE reports the result who sets up direct link by this message to RNC.
The main information that this message comprises has:
UE sets up result's (success or unsuccessful) of directly link
Embodiment
The present invention increases suitable actions such as judgement signaling by in the process of setting up in normal call link, under the situation that is implemented in the physical condition permission, directly communicates between two user terminals (UE).Fig. 1 describes in detail the process of link establishment.
101 calling subscribers (being called for short Calling-UE) wish to initiate call, then at first will set up a RRC with RNC and be connected.Between Calling-UE and the RNC by " RRCConnection Setup " subprocess realizes the RRC establishment of connection.
102 call out between, at first to carry out identity authentication and encrypt control Calling-UE by " Authentication and SecurityControl " subprocess.
103 through after identity authentication and the encryption control, and the Call Control Block of Calling-UE (CallControl is called for short CC) sends to MSC " CC:Setup " message.Hope is with setting up link between the network.
104 MSC to called subscriber (Called-UE) may several RNC send beep-page messages, by sending " RANAP:Paging ".
If 105 Called-UE and RNC do not have RRC Connection link, RNC sends by common signal channel (Common Channel) " RRC:Paging Type 1 ".If existing RRCConnection, RNC then sends by dedicated channel (Dedicated Channel) " RRC:Paging Type 2 ".
106 MSC send to Calling-UE " CC:Call Proceeding " to represent what it sent " CC:Setup " handle.
After 107 Called-UE receive paging information, by " RRC Connect ion Setup " subprocess and RRC set up RRC Connection.
108 MSC carry out identity authentication and encrypt control Called-UE.
109 MSC send Called-UE " CC:Setup "
110 Called-UE send to MSC " CC:Confirmed ", call request is received in expression.
After 111 Called-UE are ready to call treatment, the beginning jingle bell, and send to MSC simultaneously " CC:Alert ", expression has begun jingle bell.
112 MSC send to Calling-UE " CC:Alert ".
If 113 MSC find Calling-UE and Called-UE and are in same RNC territory, then send to this RNC " RANAP:DU2U Indicator " message, represent the possible direct communication of these two UE, need RNC further to determine.In giving the message of RNC, comprised the Id of two UE.
114 and 113 is same message.
115 RNC are by the RRC agreement, send to Calling-UE " RRC:DU2U Setup Request ", comprise this UE is respectively applied for transmission and resources such as time slot that receives and spreading code in the process of direct communication information in the message, notice UE goes to attempt setting up direct link.
116 RNC are by the RRC agreement, send to Called-UE " RRC:DU2U Setup Request ", also comprise this Called-UE is respectively applied for transmission and resources such as time slot that receives and spreading code in the process of direct communication information in the message, notice UE goes to attempt setting up direct link.
117 Calling-UE and Called-UE utilize the RNC assigned radio resource, comprise time slot and spreading code, carry out on the physical channel of appointment " DU2U Connection Setup " process.
118?N/A
After link between 119 Calling-UE and the Called-UE was set up, Calling-UE sent the successful message of link, i.e. transmission to RNC " RRC:DU2U Setup Response ", the sign of link establishment success is set in this message.
120 Called-UE send the successful message of link, i.e. transmission to RNC " RRC:DU2U SetupResponse ", the sign of link establishment success is set in this message.
After 121 RNC receive the message of DU2U Connection success, send " RANAP:DU2UConnection Result " message, notice MSC.
122?N/A
Behind 123 user's off-hooks, Called-UE sends " CC:Connect " to MSC.
After 124 MSC receive the message of Called-UE, send " CC:Connect " to Calling-UE.
125 Calling-UE send " CC:Connect.Acknowledgement " to MSC.
126 MSC send " CC:Connect.Acknowledgement " to Called-UE.
Two UE just can directly carry out transfer of data by DU2U Connection.
Fig. 2 has illustrated the compare variation of original call establishment of the present invention with the mode of flow chart, and the red color part all is the module that the present invention adds among the figure.
201 Called-UE respond the paging of base station, and have set up the RRC link with RNC.
202 MSC judge whether two UE are in same RNC territory.If not, explanation can not directly be communicated by letter, and then turns to 207, carries out the distribution of RAB.If two UE belong to same RNC, 203.
The RNC at 203 MSC notice UE place does further judgement.
204 RNC judge whether two UE are in same sub-district or in adjacent sub-district, if not, illustrate that then these two UE can not carry out direct communication, turn to 207 to carry out the distribution of RAB, otherwise 205
205 RNC notify two UE to attempt setting up directly link.
The foundation whether direct link of 206 UE successful? if success does not then turn to 207 to carry out the distribution of RAB.If successfully set up directly link, the distribution of then skipping RAB, the conversion of the state machine of Waiting for Call control.
207 two UE can't directly communicate, and set up the distribution of MSC to the RAB of each UE.
208 Called-UE issue MSC message, " CC:Connection ", the state transitions of calling out control is to the Connection state.Certainly at this time not being necessarily to receive this message, also may be that Called-UE refusal is called out, perhaps caller abandoned call etc.
Claims (10)
1. the method for the terminal room direct communication of a control Network Based in the cdma communication system of TDD comprises step:
If two end that MSC finds to need communication are in same RNC territory, MSC notice RNC does further judgement;
RNC checks whether two terminals are in the same or adjacent base station;
If two terminals are in the same or adjacent base station, RNC sends the message of directly setting up link to two terminals.
2. method according to claim 1 is characterized in that also comprising step:
When the business datum between two terminals is transmitted by direct link, keep the link of signaling between terminal and the base station, guarantee the management of network to the used Radio Resource of terminal.
3. method according to claim 1 is characterized in that setting up link between described two terminals comprises:
After calling terminal made a call, terminal called responded the paging of wireless network, and by network it was carried out identity authentication and encrypts control etc.;
MSC and RNC be in conjunction with the pre-judgement of finishing the terminal direct communication possibility, and the trial that is directly linked according to allocated resource by terminal, and final report (FR) is given MSC.
4. method according to claim 1 is characterized in that being provided with maximum transmission power in terminal direct communication, described maximum transmission power is less than the maximum power that allows emission between UE and the base station.
5. method according to claim 4 is characterized in that the maximum transmission power value can be used as the parameter of RNC when notice UE sets up directly link and passes to UE, also can broadcast at system's BCH common channel.
6. method according to claim 1 is characterized in that the described message of directly setting up link comprises: DU2U Indicator, DU2U Connection, DU2U Setup Request and DU2U SetupResponse.
7. method according to claim 6 is characterized in that described DU2U Indicator message comprises following information:
Need the further sign of judgement;
The number of calling terminal;
The number of terminal called.
8. method according to claim 6 is characterized in that described DU2U Connection message comprises information:
Terminal is set up the result of DCL;
The number of calling terminal;
The number of terminal called.
9. method according to claim 6 is characterized in that described DU2U Setup Request message comprises information:
The Id of distant terminal;
Terminal direct communication allows the maximum transmission power that adopts;
The time slot that transmits and adopt;
The number of the spreading code that adopts transmits;
The time slot that received signal adopts;
The number of the spreading code that received signal adopts;
Transmission packed format collection;
The physical channel time slot format.
10. method according to claim 6 is characterized in that described DU2U Setup Response message comprises information:
Terminal is set up the result of direct link;
The ID of distant terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200310116466XA CN1619993A (en) | 2003-11-21 | 2003-11-21 | Method of direct communication between terminals based on network controlling |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200310116466XA CN1619993A (en) | 2003-11-21 | 2003-11-21 | Method of direct communication between terminals based on network controlling |
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| CN1619993A true CN1619993A (en) | 2005-05-25 |
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| CNA200310116466XA Pending CN1619993A (en) | 2003-11-21 | 2003-11-21 | Method of direct communication between terminals based on network controlling |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010121421A1 (en) * | 2009-04-22 | 2010-10-28 | 华为技术有限公司 | A method, system and network equipment for realizing the local ip access |
| CN102395160A (en) * | 2011-06-28 | 2012-03-28 | 中兴通讯股份有限公司 | Method and system for controlling data transmission of user equipment |
| CN102573063A (en) * | 2010-12-22 | 2012-07-11 | 财团法人工业技术研究院 | Wireless communication system and wireless communication method |
| CN103037450A (en) * | 2011-09-29 | 2013-04-10 | 华为技术有限公司 | Method and device for communication mode switching |
| WO2014005536A1 (en) * | 2012-07-04 | 2014-01-09 | 中兴通讯股份有限公司 | Communication method, device and system for neighbour terminals |
| CN103517371A (en) * | 2012-06-18 | 2014-01-15 | 中国移动通信集团公司 | Device-to-device communication method, apparatus and system |
| WO2014026376A1 (en) * | 2012-08-17 | 2014-02-20 | 华为技术有限公司 | Bearer establishing method, base station, packet data gateway and computer system |
| CN103648079A (en) * | 2013-12-16 | 2014-03-19 | 重庆邮电大学 | Direct communication virtual scheduling method based on C-RAN framework |
| CN103648103A (en) * | 2013-12-20 | 2014-03-19 | 上海交通大学无锡研究院 | Signaling control method for network covered network-assisted D2D communication technology |
| CN103843420A (en) * | 2011-09-30 | 2014-06-04 | 英特尔公司 | Techniques for uplink power control |
| CN104244444A (en) * | 2013-06-09 | 2014-12-24 | 电信科学技术研究院 | D2D transmission control method and equipment |
| CN104350790A (en) * | 2012-05-31 | 2015-02-11 | 交互数字专利控股公司 | Device-to-device (d2d) cross link power control |
| CN104285422B (en) * | 2012-04-30 | 2017-04-05 | 阿尔卡特朗讯公司 | For the secure communication of the computing device using adjacent service |
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- 2003-11-21 CN CNA200310116466XA patent/CN1619993A/en active Pending
Cited By (28)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010121421A1 (en) * | 2009-04-22 | 2010-10-28 | 华为技术有限公司 | A method, system and network equipment for realizing the local ip access |
| CN102573063A (en) * | 2010-12-22 | 2012-07-11 | 财团法人工业技术研究院 | Wireless communication system and wireless communication method |
| CN102573063B (en) * | 2010-12-22 | 2015-03-11 | 财团法人工业技术研究院 | Wireless communication system and wireless communication method |
| US10492191B2 (en) | 2011-06-28 | 2019-11-26 | Zte Corporation | Data transmission control method and system for user equipment |
| CN102395160A (en) * | 2011-06-28 | 2012-03-28 | 中兴通讯股份有限公司 | Method and system for controlling data transmission of user equipment |
| WO2013000245A1 (en) * | 2011-06-28 | 2013-01-03 | 中兴通讯股份有限公司 | Data transmission control method and system for user equipment |
| CN102395160B (en) * | 2011-06-28 | 2017-04-12 | 中兴通讯股份有限公司 | Method and system for controlling data transmission of user equipment |
| US9629139B2 (en) | 2011-06-28 | 2017-04-18 | Zte Corporation | Data transmission control method and system for user equipment |
| CN103037450A (en) * | 2011-09-29 | 2013-04-10 | 华为技术有限公司 | Method and device for communication mode switching |
| US9532360B2 (en) | 2011-09-29 | 2016-12-27 | Huawei Technologies Co., Ltd. | Method and apparatus for communication mode switching |
| CN103037450B (en) * | 2011-09-29 | 2017-01-25 | 华为技术有限公司 | Method and device for communication mode switching |
| CN103843420B (en) * | 2011-09-30 | 2017-09-12 | 英特尔公司 | Technology for up-link power control |
| CN103843420A (en) * | 2011-09-30 | 2014-06-04 | 英特尔公司 | Techniques for uplink power control |
| CN104285422B (en) * | 2012-04-30 | 2017-04-05 | 阿尔卡特朗讯公司 | For the secure communication of the computing device using adjacent service |
| CN104350790B (en) * | 2012-05-31 | 2019-04-16 | 交互数字专利控股公司 | Device-to-device (D2D) cross link power control |
| US9807709B2 (en) | 2012-05-31 | 2017-10-31 | Interdigital Patent Holdings, Inc. | Device to-device (D2D) cross link power control |
| CN104350790A (en) * | 2012-05-31 | 2015-02-11 | 交互数字专利控股公司 | Device-to-device (d2d) cross link power control |
| US10568052B2 (en) | 2012-05-31 | 2020-02-18 | Interdigital Patent Holdings, Inc. | Device-to-device (D2D) cross link power control |
| CN103517371A (en) * | 2012-06-18 | 2014-01-15 | 中国移动通信集团公司 | Device-to-device communication method, apparatus and system |
| CN103533500A (en) * | 2012-07-04 | 2014-01-22 | 中兴通讯股份有限公司 | Communication method, device and system of neighboring terminals |
| WO2014005536A1 (en) * | 2012-07-04 | 2014-01-09 | 中兴通讯股份有限公司 | Communication method, device and system for neighbour terminals |
| US9655156B2 (en) | 2012-08-17 | 2017-05-16 | Huawei Technologies Co., Ltd. | Bearer establishment method, base station, packet data gateway, and computer system |
| CN103843452A (en) * | 2012-08-17 | 2014-06-04 | 华为技术有限公司 | Bearer establishing method, base station, packet data gateway and computer system |
| WO2014026376A1 (en) * | 2012-08-17 | 2014-02-20 | 华为技术有限公司 | Bearer establishing method, base station, packet data gateway and computer system |
| CN104244444A (en) * | 2013-06-09 | 2014-12-24 | 电信科学技术研究院 | D2D transmission control method and equipment |
| CN104244444B (en) * | 2013-06-09 | 2018-08-07 | 电信科学技术研究院 | D2D transfer control methods and equipment |
| CN103648079A (en) * | 2013-12-16 | 2014-03-19 | 重庆邮电大学 | Direct communication virtual scheduling method based on C-RAN framework |
| CN103648103A (en) * | 2013-12-20 | 2014-03-19 | 上海交通大学无锡研究院 | Signaling control method for network covered network-assisted D2D communication technology |
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