CN103945563A - No-target user detection method in Device to Device communication - Google Patents
No-target user detection method in Device to Device communication Download PDFInfo
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- CN103945563A CN103945563A CN201410145813.XA CN201410145813A CN103945563A CN 103945563 A CN103945563 A CN 103945563A CN 201410145813 A CN201410145813 A CN 201410145813A CN 103945563 A CN103945563 A CN 103945563A
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Abstract
The invention provides a no-target user detection method in Device to Device communication. The method includes the steps that a source user broadcasts equipment discovery initiation information including the ID of the source user; whether equipment discovery confirmation information is sent from a target user to the source user is determined according to the mode of the target user used for receiving the equipment discovery initiation information. By means of the method, the users can switch between a limited mode and an open mode according to wishes. Besides, the method increases a user set detected in D2D communication, and improves the experience effect of D2D communication.
Description
Technical field
The present invention relates to wireless communication technology field, relate in particular to a kind of D2D(Device to Devi ce) communication in driftlessness user detection method.
Background technology
Along with D2D communication receives publicity day by day, device discovery has become with user's pairing the study hotspot that D2D communicates by letter.Wherein, D2D device discovery can be divided into following five kinds of patterns: 1, limited D2D device discovery pattern, and only have the user who sets up good friend's relation just to allow mutually to find; 2, open D2D device discovery pattern, opens the authorized user of D2D communication service and all can be found by other users as long as meet communication feasibility detection condition; 3, the discovery mode between different PLMNs (PL MNs, Public Land Mobile Networks) authorized user; 4, the D2D device discovery pattern of roaming authorized user; 5, network D2D device discovery pattern.At present, except pattern 1 and pattern 2 can not and be deposited (being that user can not change between restricted mode and open mode), other patterns all can be set up in an example simultaneously.
At existing LTE(Long Term Evolution) while introducing D2D communication service in system, should reduce change and impact on existing LTE network as far as possible.Current, D2D device discovery and user's matching method mainly comprise three steps: 1, user detects; 2, identification; 3, authentication.Wherein, user detects and comprises: network or other D2D users of source user perception (being D2D communication user), and in the user who perceives, select D2D to communicate by letter to and obtain synchronous.Due between D2D user in a synchronous manner finishing equipment find to have become common recognition, therefore user herein detects and no longer comprises synchronizing process, user detects near determine the user's (being source user) who initiates D2D communication D2D user's set (claiming again perception user set), chooses suitable user carry out D2D with source user and communicate by letter in subsequent step according to certain rule in perception user set.Whether participate according to network, existing user's detection method: a kind of is that the auxiliary user who participates in of network coverage lower network detects (or claiming the user of network control to detect) if mainly comprising two kinds; Another kind is that user detects from the user of master control.
As described above, user's detection technique in existing D2D communication does not consider in user's testing process, whether the user of restricted mode and open mode can survey (restricted mode and open mode can not and be deposited) mutually, therefore carrying out driftlessness user while detecting, the user that can detect is less; In addition, prior art does not have the foundation of good friend's relation and the mode of maintenance under specific design restricted mode yet.
Summary of the invention
For the problems referred to above, the invention provides the driftlessness user detection method in a kind of D2D communication, comprising:
Step 1), comprise that by source user broadcast the device discovery of self ID initiates message;
Step 2), initiate the targeted customer's of message pattern according to receiving this device discovery, determine whether to find from this targeted customer to source user transmitting apparatus acknowledge message.
In one embodiment, step 2) comprising:
If receiving equipment finds that the targeted customer of initiation message is open mode user, this targeted customer finds acknowledge message to source user transmitting apparatus.
In one embodiment, step 2) also comprise:
Be restricted mode user and be the good friend user of source user if the targeted customer of message is initiated in receiving equipment discovery, this targeted customer finds acknowledge message to source user transmitting apparatus.
In another embodiment, step 2) also comprise:
If receiving equipment is found the targeted customer who initiates message and is restricted mode user and is the good friend user of source user, detect the distance between this targeted customer and source user, in the time that distance is less than predetermined threshold, this targeted customer finds acknowledge message to source user transmitting apparatus.
In one embodiment, before step 1), also comprise:
Source user request network allocation finds to initiate the resource of message for transmitting apparatus, or chooses the resource of finding to initiate message for transmitting apparatus according to reserved resource information.
In one embodiment, before targeted customer finds acknowledge message to source user transmitting apparatus, described method also comprises: targeted customer asks network allocation to be used for transmitting apparatus and finds the resource of acknowledge message, or chooses the resource of finding acknowledge message for transmitting apparatus according to reserved resource information.
In one embodiment, step 2) also comprise: for the targeted customer as restricted mode user, inquire about this targeted customer's buddy list, to determine whether this targeted customer is the good friend user of source user.
In one embodiment, to store current liveness the highest and be no more than this user's of K good friend user's information for user's buddy list; Wherein, K is positive integer, and liveness is indicated the frequent degree of contacting of this user and this good friend user.
In another embodiment, user's buddy list is stored the information of current liveness higher than this user's of predetermined threshold good friend user; Wherein, liveness is indicated the frequent degree of contacting of this user and this good friend user.
In another embodiment, user's buddy list comprises master list and auxiliary list, and it is the highest and be no more than this user's of K good friend user's information that described master list is stored current liveness; Other good friend users' of described auxiliary this user of list storage information; Wherein, K is positive integer, and liveness is indicated the frequent degree of contacting of this user and this good friend user
In one embodiment, in user's buddy list, add through the following steps its good friend user's information:
Step a), user send good friend to another user and add request;
If described another user of step b) agrees to this request, return to the message of its agreement of instruction;
Step c), in described user and described another user's buddy list, add respectively described another user and described user's information.
In one embodiment, user's buddy list is stored in this locality or is stored on network.
Adopt the present invention can reach following beneficial effect:
(1), whether user can be ready to be detected between restricted mode and open mode according to it changes, and has embodied user's wish, has increased the flexibility that in D2D communication, user detects.
(2), increased the D2D user's collection that can detect of communicating by letter, improved D2D communication experiences effect.For example, more user can be detected as the advertiser of source user, to send advertisement to it.
Brief description of the drawings
Fig. 1 is the flow chart of the driftlessness user detection method in D2D communication according to an embodiment of the invention;
Fig. 2 is the schematic diagram of the driftlessness user detection method during the D2D of network control according to an embodiment of the invention communicates by letter; And
Fig. 3 is the schematic diagram of the driftlessness user detection method of user in the D2D communication of master control according to an embodiment of the invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is illustrated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
According to one embodiment of present invention, provide the driftlessness user detection method in a kind of Device to Device communication.Wherein, driftlessness refers to does not pay close attention to D2D user a certain or that some is definite, and has which user near paying close attention to source user; User detects and refers to network or other D2D communication users of source user perception, and selects D2D communication right in the D2D user's set perceiving.Therefore, driftlessness user detects namely and does not detect for a certain or some user who determines that user carries out.Herein, source user can perceive the restricted mode good friend user and the open mode user that meet predetermined condition (for example, distance, and between source user user within limits).In addition, user herein can change between restricted mode and open mode.
With reference to figure 1 and generally, the driftlessness user detection method in this D2D communication comprises: find to initiate message (be called for short device discovery and initiate message) by source user broadcast D2D communication equipment; And, whether send D2D communication equipment discovery acknowledge message (being called for short device discovery acknowledge message) from the user who receives this message to source user according to the user's who receives this message mode decision.Wherein, in the time that the user of receipt message is open mode user, it finds acknowledge message to source user transmitting apparatus; When the user of receipt message is the good friend user of source user under restricted mode, and while being less than a predetermined threshold with the distance of source user, it finds acknowledge message to source user transmitting apparatus; Otherwise transmitting apparatus is not found acknowledge message.
In a further embodiment, according to the degree of participation of network, the driftlessness user detection method in this D2D communication can be divided into two kinds of driftlessness user detection method in the D2D communication of network control and the driftlessness user detection method of user in the D2D of master control communication.Below, according to two embodiment, respectively these two kinds of methods are described:
One, the driftlessness user detection method in the D2D of network control communication
With reference to figure 2, an embodiment of the driftlessness user detection method of network control has been described, comprise the following steps:
Step 1, source user (UE A) are found resource to network request D2D communication equipment; Wherein, source user UE A can be the user in open or restricted mode, can be open mode user or restricted mode user.
Step 2, UE A side network are UE A Resources allocation, and this resource sends D2D communication equipment for UE A and finds to initiate message.
Step 3, UE A utilize the resource broadcast D2D communication equipment distributing to find to initiate message, and wherein, this message can comprise ProSe ID A, and the D2D of its instruction UE A finds ID.This message can also comprise Modem, is used to indicate the current pattern of UE A.
Step 4, initiate the D2D user's of message pattern according to receiving this device discovery, carry out respectively following operation:
4a, in the time receiving D2D communication equipment and find to initiate the D2D user (UE B) of message and be open mode user, UE B to network request for sending the resource of D2D communication equipment discovery acknowledge message.
4b, in the time receiving D2D communication equipment and find to initiate the UE B of message and be restricted mode user, be divided into following two kinds of situations:
If 1 UE B is the good friend user of UE A, UE B finds the resource of acknowledge message for transmitting apparatus to network request, carry out step 5.
In a further embodiment, if UE B is the good friend user of UE A, UE B also wants first to network request apart from detection.Then by the distance between good friend user UE B and the UE A of network detection UE A, if this distance is less than threshold value D, UE B finds the resource of acknowledge message for transmitting apparatus to network request, carry out step 5; Else process finishes.Threshold value D be here set be because restricted mode user due to energy consumption, the reason such as exempt to disturb and do not wish to be found by more user.
If 2 UE B are non-good friend users of UE A, process finishes.
In one embodiment, UE B can inquire about the buddy list of storing on network, judges whether UE B and UE A are good friend's relation; In another embodiment, whether UE B can inquire about the buddy list of local storage, to determine with UE A as good friend's relation.
Step 5, network are UE B Resources allocation, find acknowledge message for sending D2D communication equipment by UE B.
Step 6, UE B utilize the resource of distributing to send D2D communication equipment by network to UE A and find acknowledge message, and this message can comprise ProSe ID A and ProSe ID B.
So far, the driftlessness user testing process in the D2D of network control communication completes.
Two, the driftlessness user detection method of user in the D2D of master control communication
With reference to figure 3, the embodiment of user from the driftlessness user detection method of master control described, comprise the following steps:
Step 1, UE A, according to pre-download program (i.e. reserved resource information and resource selection scheme), choose the resource of network reservation.
Step 2, UE A utilize selected resource broadcast D2D communication equipment to find to initiate message, and this message comprises ProSe ID A.
Step 3, when receiving D2D communication equipment, to find to initiate the user UE B of message be restricted mode user and while being the good friend user of UE A, continues step 4;
When receiving D2D communication equipment, to find to initiate the user UE B of message be restricted mode user and while not being the good friend user of UE A, process finishes;
Find to initiate the user UE B of message while being open mode user when receiving D2D communication equipment, continue step 4.
In a further embodiment, also to first judge as UE A good friend user's UE B whether the distance of own and UE A is less than threshold value D, if be less than D, continue step 4; If be not less than D, process finishes.
In one embodiment, UE B can store buddy list in this locality, inquires about to determine for UE B whether UE A is its good friend.
Step 4, UE B, according to pre-download program, choose the resource of network reservation;
Step 5, UE B utilize selected resource, send D2D communication equipment find acknowledge message to UE A, and this message comprises ProSe ID A and ProSe ID B.
So far, the driftlessness user testing process of user in the D2D of master control communication completes.
In each embodiment given above, be no matter network control or user from the driftlessness user detection method of master control, find to initiate when receiving D2D communication equipment that the D2D user UE B of message is current while being restricted mode user, need to determine whether UE A and UE B are good friend's relations, to find with it the being restricted mode user of good friend's relation.According to one embodiment of present invention, set up good friend's relation as example taking D2D user A by network and D2D user B, describe the step of the method for setting up the good friend's relation between user:
Step 1, user A send request interpolation friend information to user B.
Step 2, user B receive this request to be added after friend information, can agree to or refuse this request.If select to agree to, user B can return to the message that its agreement interpolation of instruction user A is good friend, between user A and user B, has set up good friend's relation.
Further, return and agree to add after the message that A is good friend at B, the information that can add respectively user B, A in the buddy list of these two user A, B.Wherein, user's buddy list is for storing the current good friend's user profile of this user.
In one embodiment, user can set up good friend's relation by network at any time.And in another embodiment, can, after source user and targeted customer's successful matching (network control as described above or user detect and pairing from the user of master control), ask to set up D2D communication good friend relation by the side in source user or targeted customer between both sides.For example, send request interpolation friend information by source user to targeted customer, if targeted customer returns to acceptance message, source user and targeted customer have set up good friend's relation.
As described above, UE B can judge whether itself and UE A are good friend's relations by inquiring about its buddy list, and due to the short distance characteristic of D2D communication and user's mobility, in a further embodiment, need to safeguard each user's buddy list.Store this two kinds of storage modes based on subscriber's local storage or non-subscriber's local below, be described with regard to the maintaining method of buddy list respectively.
One, subscriber's local storage
When D2D user is when without network coverage status, can adopt and store in this way its buddy list.As described above, subscriber's local storage mode is applicable to carry out the driftlessness user detection of user from master control.User's buddy list can be stored all good friend users' of this user information, but because the frequency of user and some good friend's telex network may be very low, therefore, the only storage good friend user higher with this telex network frequency in user's buddy list.
In one embodiment, suppose that user's buddy list only retains K (also may not reach K) the good friend user's that current liveness is the highest information.Wherein, liveness can indicating user and its good friend user contact frequent degree.Can periodically safeguard in such a way buddy list:
Step 1, determine the good friend's number of users in current buddy list;
Step 2, in the time that good friend user's quantity is less than K, retain all good friend users' information; And be greater than after threshold k when good friend user's quantity, delete one or more users that current liveness is minimum, ensure that the good friend user in buddy list is no more than K.
Because the current liveness according to good friend user is safeguarded buddy list, in a further embodiment, also need real-time update good friend user's liveness.For example, can, after the each D2D communication of user or after a set time, upgrade this user's the current liveness of good friend user.In one embodiment, good friend user can also be pressed in buddy list to liveness order and arrange, so that insert in buddy list and deletion action.
In another embodiment, suppose that user's buddy list only retains the information of liveness higher than the good friend user of default thresholding, can periodically carry out in such a way maintenance customer's buddy list:
Step 1, the current liveness that compares each good friend user in buddy list and the size of default thresholding;
Step 2, delete good friend's user profile that current liveness is less than this thresholding.
In a further embodiment, except deleting the low good friend user of liveness, in the time that user's cancellation is related to another user's good friend, also in both buddy lists, carry out deletion action.For example, if user A will cancel and good friend's relation of user B, user A can delete the information of user B in its buddy list, and the information of deleting user A by network or D2D communication notifications user B in its buddy list.
Two, non-subscriber's local storage
As described above, when carrying out the driftlessness user of network control while detecting, can adopt the mode of non-subscriber's local storage (or claiming network storage) to store user's buddy list (should be understood that and also can adopt in this case subscriber's local storage mode).For example, can store each D2D user's buddy list in network center or D2D communication connection server place.In addition, if first user when having the area of the network coverage to enter into without the network coverage regional, also can download its buddy list to network application as required.
Because Internet resources are abundanter than local resource, except adopting a list to store good friend's user profile, in one embodiment, buddy list can comprise main buddy list (abbreviation master list) and two lists of auxiliary buddy list (being called for short auxiliary list).Wherein, in master list, store the good friend user that liveness is higher, and in this list, good friend user's the number upper limit is set as to K; And in auxiliary list, store the good friend user that liveness is lower.Multiple users can inquire about by same account the buddy list of non-subscriber's local storage.In one embodiment, when user has set up after new good friend's relation, can safeguard according to following mode D2D user's major-minor list:
Step 1, determine the good friend's number of users in this user's master list;
If the good friend's number of users in step 2 master list reaches upper limit K, first the user add that in current master list, liveness is minimum in auxiliary list, and in auxiliary list, delete the user that liveness is minimum, newer good friend's user add arrived to master list;
If the good friend's number of users in master list does not reach upper limit K, directly add new good friend user to master list.
In one embodiment, in the time that the user in master list is less than K, can in corresponding auxiliary list, select most active user to add master list, until the user in master list reaches K or until there is no user in auxiliary list.
Safeguard the buddy list that comprises major-minor list, need to be updated periodically equally user's liveness.
As described above, in the time adopting non-subscriber's local storage mode to store buddy list, if the side user in good friend's relation will cancel the good friend's relation with the opposing party, need to send cancellation good friend to network (network center or D2D communication connection server) and be related to message, network center or D2D communication connection server are deleted the corresponding information in both sides' buddy list.For example, user A cancels the good friend's relation with user B, user A need to send to network the cancellation good friend relation information of the information that comprises B, the information of the information of user B in the buddy list of network center or associated server deletion user A and the user A in the buddy list of user B.
Should be understood that the buddy list that comprises major-minor list also can be stored in this locality; And also can being stored in network center or D2D, the buddy list being only made up of a list communicates to connect server place.
Should be noted that and understand, in the situation that not departing from the desired the spirit and scope of the present invention of accompanying claim, can make various amendments and improvement to the present invention of foregoing detailed description.Therefore, the scope of claimed technical scheme is not subject to the restriction of given any specific exemplary teachings.
Claims (12)
1. the driftlessness user detection method in Device to Device communication, comprising:
Step 1), comprise that by source user broadcast the device discovery of self ID initiates message;
Step 2), initiate the targeted customer's of message pattern according to receiving this device discovery, determine whether to find from this targeted customer to source user transmitting apparatus acknowledge message.
2. method according to claim 1, wherein, step 2) comprising:
If receiving equipment finds that the targeted customer of initiation message is open mode user, this targeted customer finds acknowledge message to source user transmitting apparatus.
3. method according to claim 2, wherein, step 2) also comprise:
Be restricted mode user and be the good friend user of source user if the targeted customer of message is initiated in receiving equipment discovery, this targeted customer finds acknowledge message to source user transmitting apparatus.
4. method according to claim 2, wherein, step 2) also comprise:
If receiving equipment is found the targeted customer who initiates message and is restricted mode user and is the good friend user of source user, detect the distance between this targeted customer and source user, in the time that distance is less than predetermined threshold, this targeted customer finds acknowledge message to source user transmitting apparatus.
5. according to the method described in any one in claim 1-4, wherein, before step 1), also comprise:
Source user request network allocation finds to initiate the resource of message for transmitting apparatus, or chooses the resource of finding to initiate message for transmitting apparatus according to reserved resource information.
6. according to the method described in any one in claim 2-4, before targeted customer finds acknowledge message to source user transmitting apparatus, also comprise:
Targeted customer asks network allocation to be used for transmitting apparatus and finds the resource of acknowledge message, or chooses the resource of finding acknowledge message for transmitting apparatus according to reserved resource information.
7. according to the method described in claim 3 or 4, wherein, step 2) also comprise:
For the targeted customer as restricted mode user, inquire about this targeted customer's buddy list, to determine whether this targeted customer is the good friend user of source user.
8. method according to claim 7, wherein, it is the highest and be no more than this user's of K good friend user's information that user's buddy list is stored current liveness; Wherein, K is positive integer, and liveness is indicated the frequent degree of contacting of this user and this good friend user.
9. method according to claim 7, wherein, user's buddy list is stored the information of current liveness higher than this user's of predetermined threshold good friend user; Wherein, liveness is indicated the frequent degree of contacting of this user and this good friend user.
10. method according to claim 7, wherein, user's buddy list comprises master list and auxiliary list, it is the highest and be no more than this user's of K good friend user's information that described master list is stored current liveness; Other good friend users' of described auxiliary this user of list storage information; Wherein, K is positive integer, and liveness is indicated the frequent degree of contacting of this user and this good friend user.
Method in 11. according to Claim 8-10 described in any one, wherein, in user's buddy list, add through the following steps its good friend user's information:
Step a), user send good friend to another user and add request;
If described another user of step b) agrees to this request, return to the message of its agreement of instruction;
Step c), in described user and described another user's buddy list, add respectively described another user and described user's information.
Method in 12. according to Claim 8-10 described in any one, wherein, user's buddy list is stored in this locality or is stored on network.
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Application publication date: 20140723 |