CN104113833A - Device to device (D2D) configuration method, D2D configuration device and D2D configuration system - Google Patents
Device to device (D2D) configuration method, D2D configuration device and D2D configuration system Download PDFInfo
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- CN104113833A CN104113833A CN201310133022.0A CN201310133022A CN104113833A CN 104113833 A CN104113833 A CN 104113833A CN 201310133022 A CN201310133022 A CN 201310133022A CN 104113833 A CN104113833 A CN 104113833A
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- 238000004891 communication Methods 0.000 claims abstract description 165
- 230000011664 signaling Effects 0.000 claims abstract description 18
- 238000005516 engineering process Methods 0.000 description 4
- 239000000758 substrate Substances 0.000 description 3
- 230000001413 cellular effect Effects 0.000 description 2
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Abstract
The present invention discloses a D2D configuration method, a D2D configuration device and a D2D configuration system The method is characterized in that a base station receiving terminal reports the information whether the base station receiving terminal itself supports the D2D communication when reporting capacity during a process of attaching or tracking area update, if the terminal supports the D2D communication, the base station carries out D2D configuration on the terminal. By the scheme of the present invention, the signaling overheads can be saved.
Description
Technical Field
The present invention relates to wireless technology, and more particularly, to Device-to-Device (D2D) configuration methods, apparatuses, and systems.
Background
D2D communication refers to communication between terminals that is performed directly without infrastructure.
The traditional cellular network does not support the D2D technology, data forwarding must be performed through a base station for communication between terminals, and after the D2D technology is introduced into the cellular network, terminals in a short distance can discover each other and directly perform data transmission, thereby saving air interface and core network resources and providing new services, such as battle games, short-distance broadcasting, and Machine-to-Machine (M2M) communication.
The inventor of the present application believes that, in practical applications, not all terminals support the D2D technology, that is, support D2D communication, but since the network side does not know which terminals do not support D2D communication, D2D configuration can only be performed for terminals that support and do not support D2D communication, which results in unnecessary signaling overhead.
Disclosure of Invention
In view of this, the present invention provides a D2D configuration method, apparatus and system, which can save signaling overhead.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a D2D configuration method, comprising:
the method comprises the steps that when a first base station reports capacity in the process of attaching or updating a tracking area, the first base station receives information whether the terminal supports D2D communication or not;
and if the terminal is determined to support D2D communication, the first base station performs D2D configuration for the terminal.
A terminal, comprising:
and the reporting module is used for reporting the information whether the terminal supports the D2D communication or not when the capability is reported to the base station in the process of attaching or updating the tracking area.
A base station, comprising:
the receiving module is used for receiving information whether the reported terminal supports D2D communication when the terminal reports the capability in the process of attaching or updating the tracking area, and sending the information to the configuration module;
the configuration module is used for performing D2D configuration only for the terminal supporting D2D communication.
A D2D configuration system, comprising:
the terminal is used for reporting the information whether the terminal supports D2D communication or not when reporting the capability to the base station in the process of updating the attachment or tracking area;
and the base station is used for receiving the information whether the terminal supports D2D communication or not when the terminal reports the capability, and performing D2D configuration for the terminal supporting D2D communication.
Therefore, by adopting the scheme of the invention, the terminal can report the information whether the terminal supports D2D communication or not when reporting the capability, so that the network side can carry out D2D configuration for the terminal supporting D2D communication, thereby saving signaling overhead.
Drawings
Fig. 1 is a flowchart of a D2D configuration method according to an embodiment of the present invention.
FIG. 2 is a flowchart illustrating a D2D configuration method according to a preferred embodiment of the present invention.
Detailed Description
Aiming at the problems in the prior art, the invention provides a D2D configuration scheme, which can save signaling overhead.
In order to make the technical solution of the present invention clearer and more obvious, the solution of the present invention is further described in detail below by referring to the drawings and examples.
Fig. 1 is a flowchart of a D2D configuration method according to an embodiment of the present invention. As shown in fig. 1, includes:
step 11: and the first base station receives information whether the terminal supports D2D communication or not when the terminal reports the capability in the process of attaching or updating the tracking area.
Generally, when a terminal attaches (Attach) or performs Tracking Area Update (TAU), it reports the capability to the network.
In this step, when reporting the capability, the terminal needs to report information about whether the terminal supports D2D communication, in addition to reporting information required to be reported in the prior art.
For a 3GPP Long Term Evolution (LTE) system, the Capability (UE-EUTRA-Capability) of an Information Element (IE, Information Element) terminal in a Capability report signaling may be extended, for example, a bit (bit) is added to indicate whether the terminal supports D2D communication, and if the bit is 0, the terminal is not supported, and if the bit is 1, the terminal is supported; alternatively, if there are reserved bits in the IE UE-EUTRA-Capability, one of the reserved bits may also be used to indicate whether the terminal supports D2D communication.
In addition, for a terminal supporting D2D communication, while reporting information whether the terminal supports D2D communication, the terminal may further report one of the following information: the specific type of receiving only the D2D information, transmitting only the D2D information, receiving both the D2D information and transmitting the D2D information may be determined according to actual circumstances.
Accordingly, two bits may be added to IE UE-EUTRA-Capability, or two reserved bits in IE UE-EUTRA-Capability may be utilized to indicate the relevant information of the terminal, for example, when the two bits are 00 or empty, it indicates that the terminal does not support D2D communication, when the two bits are 01, it indicates that the terminal supports D2D communication and only receives D2D information, when the two bits are 10, it indicates that the terminal supports D2D communication and only transmits D2D information, and when the two bits are 11, it indicates that the terminal supports D2D communication and both receives D2D information and transmits D2D information.
Step 12: if the terminal is determined to support D2D communication, the first base station performs D2D configuration for the terminal.
Generally, when a terminal enters an area supporting D2D communication, it needs to be configured with D2D.
Specifically, for any terminal, if it supports D2D communication, the first base station to which the terminal belongs may perform D2D configuration for the terminal according to its own condition and information reported by the terminal, and send D2D configuration information to the terminal, where the resource size, location, and period of D2D communication of a cell in which the terminal is located may be carried, how to perform D2D configuration in the prior art.
The D2D configuration information may be carried in a Radio resource control Reconfiguration (RRC) signaling, or may be carried in another Radio Resource Control (RRC) signaling sent by the first base station to the terminal.
As described above, as long as the terminal supporting D2D communication performs D2D configuration, in practical applications, the D2D configuration condition of the terminal may be further defined, that is, only the terminal supporting D2D communication and having activated D2D communication performs D2D configuration, because only the terminal having activated D2D communication can perform D2D communication, thereby further saving signaling overhead.
For this reason, if any terminal supports D2D communication and has started D2D communication when reporting capability, then reporting information whether or not it supports D2D communication in step 11 and also reporting information that it has started D2D communication; if it supports D2D communication but does not initiate D2D communication when capability reporting is performed, then after the D2D communication is initiated, information that it has initiated D2D communication is reported.
In addition, the solution of the present invention further provides that, for any terminal, when the terminal is switched from the first base station to the second base station, the first base station needs to forward the information reported by the terminal to the second base station, so that the terminal does not need to report related information to the second base station, thereby further saving signaling overhead.
Specifically, the first base station may determine whether an X2 interface exists between itself and the second base station, and if so, forward the information reported by the terminal to the second base station through an X2 interface; otherwise, the information reported by the terminal may be forwarded to a Mobility Management Entity (MME) through an S1 interface with the MME, and the information reported by the terminal is forwarded to the second base station through an S1 interface with the second base station by the MME. In the LTE system, the Information reported by the terminal may be carried in RRC signaling handover preparation Information (handover Information), or of course, may be carried in other RRC signaling sent from the first base station to the second base station.
Based on the above description, fig. 2 is a flowchart of a preferred embodiment of a D2D configuration method according to the invention. As shown in fig. 2, includes:
step 21: for any terminal supporting D2D communication, when reporting the capability to the first base station, reporting the information of self supporting D2D communication and the information of only receiving D2D information.
Assume that at this point the terminal has not initiated D2D communication.
Step 22: and when the terminal starts the D2D communication, reporting the information that the terminal starts the D2D communication to the first base station.
Step 23: the first base station performs D2D configuration for the terminal and notifies the terminal of the configuration information.
Step 24: when the terminal is switched from the first base station to the second base station, the first base station forwards the information of supporting D2D communication, the information of only receiving D2D information and the information of starting D2D communication, which are reported by the terminal, to the second base station.
The solution according to the invention is further illustrated below by way of example.
Assuming that a terminal needs to update a tracking area, in the process, the terminal reports the capability to a first base station and reports information whether the terminal supports D2D communication; if the terminal supports D2D communication, whether the terminal has started D2D communication can be determined, if yes, the terminal can report the information that the terminal supports D2D communication and reports the information that the terminal has started D2D communication, otherwise, the terminal can wait for the subsequent D2D communication starting and then reports the information that the terminal has started D2D communication; in addition, if the terminal supports D2D communication, while reporting information that the terminal supports D2D communication and information that D2D communication is started, it may report one of the following information according to the terminal's own situation: receive only D2D information, transmit only D2D information, receive both D2D and D2D information; the information reported by the terminal can be carried in IE UE-EUTRA-Capability in the Capability reporting signaling, and particularly, the reported information can be carried by an extension bit or a reserved bit in the IE UE-EUTRA-Capability;
after receiving the Capability reporting signaling from the terminal, the first base station may analyze IEUE-EUTRA-Capability therein, and assuming that it is known that the terminal supports D2D communication according to the analysis result, and has started D2D communication, and only receives D2D information, may perform D2D configuration for the terminal accordingly, and may send the D2D configuration information to the terminal through RRC signaling, where the D2D configuration information may include: the resource size, location, and period of D2D communication of the cell in which the terminal is located;
subsequently, assuming that the terminal is handed over from the first base station to the second base station, the first base station may first determine whether an X2 interface exists between itself and the second base station, if so, the information reported by the terminal may be forwarded to the second base station through an X2 interface, otherwise, the information reported by the terminal may be forwarded to an MME through an S1 interface with the MME, and further, the information reported by the terminal may be forwarded to the second base station by the MME through an S1 interface with the second base station.
The invention also discloses a D2D configuration system, a terminal and a base station.
The D2D configuration system comprises:
the terminal is used for reporting the information whether the terminal supports D2D communication or not when reporting the capability to the base station in the process of updating the attachment or tracking area;
and the base station is used for receiving the information whether the terminal supports D2D communication or not when the terminal reports the capability, and performing D2D configuration only for the terminal supporting D2D communication.
Wherein,
the terminal may be further configured to, if D2D communication is supported, report one of the following information while reporting information whether the terminal supports D2D communication: receive only D2D information, transmit only D2D information, receive both D2D and D2D information;
accordingly, the base station may be further configured to receive one of the following information reported by a terminal supporting D2D communication: receive only D2D information, transmit only D2D information, receive both D2D and D2D information; and D2D configuration is carried out for the terminal supporting D2D communication by combining the self condition and the information reported by the terminal.
In addition, the first and second substrates are,
the terminal may be further configured to, if the D2D communication is supported and the D2D communication is started when the capability reporting is performed, report information of whether the terminal supports the D2D communication and information of the terminal that the terminal has started the D2D communication; if the D2D communication is supported, but the D2D communication is not started when the capability reporting is carried out, the information that the D2D communication is started is reported after the D2D communication is started;
correspondingly, the base station may be further configured to receive information that a terminal supporting D2D communication and having started D2D communication reports that the terminal has started D2D communication, and perform D2D configuration only for a terminal supporting D2D communication and having started D2D communication.
Furthermore, the first and second electrodes are provided with,
the base station may be further configured to forward the information reported by the terminal to a new base station if it is determined that the terminal is handed over from the terminal to the new base station.
The terminal comprises:
and the reporting module is used for reporting the information whether the terminal supports the D2D communication or not when the capability is reported to the base station in the process of attaching or updating the tracking area.
Wherein,
the reporting module may be further configured to, if the terminal supports D2D communication, report one of the following information while reporting information whether the terminal supports D2D communication: the terminal receives only the D2D information, the terminal transmits only the D2D information, and the terminal receives both the D2D and D2D information.
In addition, the first and second substrates are,
the reporting module may be further configured to, if the terminal supports D2D communication and the D2D communication is started when reporting the capability, report information that the terminal has started the D2D communication while reporting information that whether the terminal supports D2D communication; if the terminal supports the D2D communication but does not start the D2D communication when reporting the capability, the terminal reports the information that the terminal starts the D2D communication after starting the D2D communication.
The base station comprises:
the receiving module is used for receiving information whether the reported terminal supports D2D communication when the terminal reports the capability in the process of attaching or updating the tracking area, and sending the information to the configuration module;
a configuration module for performing D2D configuration only for terminals supporting D2D communication.
Wherein,
the receiving module may be further configured to receive one of the following information reported by a terminal supporting D2D communication: only D2D information is received, only D2D information is transmitted, both D2D information and D2D information are received, and the information is transmitted to a configuration module;
correspondingly, the configuration module performs D2D configuration for the terminal supporting D2D communication according to the condition of the base station and the information reported by the terminal.
In addition, the first and second substrates are,
the receiving module can be further used for receiving information of self-started D2D communication reported by terminals supporting D2D communication and started D2D communication, and sending the information to the configuration module;
accordingly, the configuration module may perform D2D configuration only for terminals that support D2D communications and have initiated D2D communications.
Furthermore, the first and second electrodes are provided with,
the configuration module may be further configured to forward information reported by a terminal to a new base station if it is determined that the terminal is handed over from the base station to the new base station.
In particular, the amount of the solvent to be used,
the configuration module determines whether an X2 interface exists between the base station and the new base station, and if so, the information reported by the terminal is forwarded to the new base station through an X2 interface; otherwise, the information reported by the terminal is forwarded to the MME through an S1 interface between the MME and the new base station, and the information reported by the terminal is forwarded to the new base station through an S1 interface between the MME and the new base station.
For the specific work flow of the above device embodiment, please refer to the corresponding description in the above method embodiment, which is not described herein again.
In a word, by adopting the scheme of the invention, the terminal can report the information whether the terminal supports D2D communication or not when reporting the capability, so that the network side can only carry out D2D configuration for the terminal supporting D2D communication, thereby saving signaling overhead; moreover, when the terminal is switched from one base station to another base station, the terminal does not need to report information of whether the terminal supports D2D communication and the like again, so that the signaling overhead is further saved; in addition, the scheme of the invention is simple and convenient to realize and is convenient to popularize and promote.
In summary, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (18)
1. A device-to-device D2D configuration method, comprising:
the method comprises the steps that when a first base station reports capacity in the process of attaching or updating a tracking area, the first base station receives information whether the terminal supports D2D communication or not;
and if the terminal is determined to support D2D communication, the first base station performs D2D configuration for the terminal.
2. The method of claim 1,
the method further comprises the following steps: if the terminal supports D2D communication, reporting information whether the terminal supports D2D communication, and simultaneously reporting one of the following information: receive only D2D information, transmit only D2D information, receive both D2D and D2D information;
the first base station performing D2D configuration for the terminal includes: and the first base station performs D2D configuration for the terminal by combining the self condition and the information reported by the terminal.
3. The method of claim 1,
the method further comprises the following steps: if the terminal supports D2D communication and starts D2D communication when reporting the capability, reporting the information whether the terminal supports D2D communication and reporting the information that the terminal starts D2D communication; if the terminal supports D2D communication but does not start D2D communication when reporting the capability, reporting the information that the terminal starts D2D communication after starting D2D communication;
if it is determined that the terminal supports D2D communication, the configuring, by the first base station, of the terminal by using D2D includes: if the terminal is determined to support D2D communication and D2D communication is started, the first base station performs D2D configuration for the terminal.
4. The method of claim 1, 2 or 3,
the method further comprises the following steps: and if the first base station determines that the terminal is switched to a second base station, forwarding the information reported by the terminal to the second base station.
5. The method of claim 4, wherein the forwarding, by the first base station, the information reported by the terminal to the second base station comprises:
the first base station determines whether an X2 interface exists between the first base station and the second base station, and if so, the information reported by the terminal is forwarded to the second base station through the X2 interface; otherwise, the information reported by the terminal is forwarded to the mobility management entity MME through an S1 interface with the MME, and the information reported by the terminal is forwarded to the second base station by the MME through an S1 interface with the second base station.
6. The method of claim 1, wherein the capability reporting comprises:
carrying the reported information through the extended bit in the Capability of the information unit IE terminal in the Capability report signaling UE-EUTRA-Capability;
or carrying the reported information through reserved bits in the IE UE-EUTRA-Capability.
7. A terminal, comprising:
and the reporting module is used for reporting the information whether the terminal supports the device-to-device D2D communication when the capability is reported to the base station in the process of updating the attachment or tracking area.
8. The terminal of claim 7,
the reporting module is further configured to, if the terminal supports D2D communication, report information on whether the terminal supports D2D communication, and report one of the following information: the terminal receives only the D2D information, the terminal transmits only the D2D information, and the terminal receives both the D2D and D2D information.
9. The terminal according to claim 7 or 8,
the reporting module is further configured to, if the terminal supports D2D communication and the D2D communication is started when reporting the capability, report information that the terminal has started the D2D communication while reporting information that whether the terminal supports D2D communication; if the terminal supports the D2D communication but does not start the D2D communication when reporting the capability, the terminal reports the information that the terminal starts the D2D communication after starting the D2D communication.
10. A base station, comprising:
the receiving module is used for receiving information whether the reported terminal supports the device-to-device D2D communication when the terminal reports the capability in the process of attaching or updating the tracking area, and sending the information to the configuration module;
the configuration module is used for performing D2D configuration only for the terminal supporting D2D communication.
11. The base station of claim 10,
the receiving module is further configured to receive one of the following information reported by a terminal supporting D2D communication: receiving only D2D information, transmitting only D2D information, receiving both D2D and D2D information, and transmitting to the configuration module;
and the configuration module performs D2D configuration on the terminal supporting D2D communication by combining the condition of the base station and the information reported by the terminal.
12. The base station of claim 10,
the receiving module is further configured to receive information that a terminal supporting D2D communication and having started D2D communication reports that D2D communication has been started, and send the information to the configuration module;
the configuration module performs D2D configuration only for terminals that support D2D communication and have activated D2D communication.
13. The base station of claim 10, 11 or 12,
the configuration module is further configured to forward the information reported by the terminal to a new base station if it is determined that the terminal is switched from the base station to the new base station.
14. The base station of claim 13,
the configuration module determines whether an X2 interface exists between the base station and the new base station, and if so, the information reported by the terminal is forwarded to the new base station through the X2 interface; otherwise, the information reported by the terminal is forwarded to the MME through an S1 interface between the MME and the mobile management entity, and the information reported by the terminal is forwarded to the new base station through an S1 interface between the MME and the new base station.
15. A device-to-device D2D configuration system, comprising:
the terminal is used for reporting the information whether the terminal supports D2D communication or not when reporting the capability to the base station in the process of updating the attachment or tracking area;
and the base station is used for receiving the information whether the terminal supports D2D communication or not when the terminal reports the capability, and performing D2D configuration for the terminal supporting D2D communication.
16. The system of claim 15,
the terminal is further configured to, if the D2D communication is supported, report one of the following information while reporting information whether the terminal supports D2D communication: receive only D2D information, transmit only D2D information, receive both D2D and D2D information;
the base station is further configured to receive one of the following information reported by a terminal supporting D2D communication: receive only D2D information, transmit only D2D information, receive both D2D and D2D information; and D2D configuration is carried out for the terminal supporting D2D communication by combining the self condition and the information reported by the terminal.
17. The system of claim 15,
the terminal is further used for reporting the information of whether the terminal supports D2D communication and reporting the information of the terminal which starts D2D communication when the terminal supports D2D communication and starts D2D communication when reporting the information of whether the terminal supports D2D communication; if the D2D communication is supported, but the D2D communication is not started when the capability reporting is carried out, the information that the D2D communication is started is reported after the D2D communication is started;
the base station is further configured to receive information that the terminal supporting D2D communication and starting D2D communication reports that the terminal has started D2D communication, and perform D2D configuration for the terminal supporting D2D communication and starting D2D communication.
18. The system of claim 15, 16 or 17,
the base station is further configured to forward the information reported by the terminal to a new base station if it is determined that the terminal is handed over from itself to the new base station.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310133022.0A CN104113833A (en) | 2013-04-17 | 2013-04-17 | Device to device (D2D) configuration method, D2D configuration device and D2D configuration system |
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| CN201310133022.0A CN104113833A (en) | 2013-04-17 | 2013-04-17 | Device to device (D2D) configuration method, D2D configuration device and D2D configuration system |
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