CN106331978B - A kind of selection, notification method and the device of 2 link identification of layer - Google Patents
A kind of selection, notification method and the device of 2 link identification of layer Download PDFInfo
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- CN106331978B CN106331978B CN201510346634.7A CN201510346634A CN106331978B CN 106331978 B CN106331978 B CN 106331978B CN 201510346634 A CN201510346634 A CN 201510346634A CN 106331978 B CN106331978 B CN 106331978B
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Abstract
The invention discloses selection, notification method and the devices of a kind of 2 link identification of layer, comprising: in notification scheme, determines that user equipment carries out device-to-device with other each user equipmenies and communicates 2 link identification of used layer；And broadcast the information for carrying 2 link identification of layer.In selection scheme, the information for carrying 2 link identification of layer of other users device broadcasts is received on a user device；2 link identification group of layer has been used according to 2 link identification of the layer determination carried in each information；According to 2 link identification group of layer has been used, select to have used 2 link identification of layer other than 2 link identification group of layer to carry out 2 link identification of layer of device-to-device communication as user equipment and other each user equipmenies.Using the present invention, it ensure that user equipment and other users equipment carry out the uniqueness of used 2 link identification of layer when device-to-device communication, avoid multiple user equipmenies and use the problem of data transmit-receive mistake caused by identical customer equipment identification.
Description
Technical field
The present invention relates to wireless communication technology field, in particular to a kind of selection, notification method and the dress of 2 link identification of layer
It sets.
Background technique
In mobile communication system future development, in order to better meet user demand, D2D discovery (Device to is introduced
Device Discovery) mechanism and D2D communicate (Device to Device Communication) mechanism.
D2D discovery and D2D communication are realized using PC5 interface.3GPP Rel-12 has been realized in the one of PC5 interface at present
Many-to-many communication, cardinal principle are to send UE (User Equipment, user equipment) in group to pass through data packet MAC (Media
Access Control, media access control) source address (SRC) in subheader identifies oneself；UE is received in group is receiving number
After packet, the destination address (DST) in the data packet MAC subheader received is combined into determination with physical layer channel scrambling code first
Group identification information, then judge this group of identification information whether with where oneself group identify (ProSe Layer-2Group ID)
It is identical, if identical, confirm reception, otherwise abandon, to realize a pair of of multi-unit message of PC5 interface.In one-to-many communication
In, the SRC (ProSe UE ID) for identifying UE is distributed by ProSe Key Management Function, and can
Ensure to be unique in a group, therefore UE does not need to carry out UE mark collision detection.
The deficiencies in the prior art are lain also in: not being able to carry out the scheme of UE mark collision detection.
Summary of the invention
The present invention provides selection, notification method and the device of a kind of 2 link identification of layer, to guarantee UE and other UE into
The uniqueness of row D2D used 2 link identification of layer when communicating.
The embodiment of the invention provides a kind of selection methods of 2 link identification of layer, comprising:
The information for carrying 2 link identification of layer of other UE broadcast is received on UE；
2 link identification group of layer has been used according to 2 link identification of the layer determination carried in each information is described, it is described to have used 2 chain of layer
Line group is other UE and carries out 2 link identification of layer used in the UE other than the UE of D2D communication with other UE；
2 link identification group of layer, selection 2 link identification of layer used other than 2 link identification group of layer have been used according to described
2 link identification of layer of D2D communication is carried out as UE and other each UE.
Preferably, having used 2 link identification group of layer, selection 2 chain of layer used other than 2 link identification group of layer according to described
Line carries out 2 link identification of layer of D2D communication as UE and other each UE, comprising:
After 2 link identification of layer used in determining UE with other each established D2D of UE and communicating, and/or, in determination
UE is intended to establish after D2D communicates with other each UE, one of as follows or a combination thereof execution；
When UE desire is established D2D with other each UE and is communicated, selection 2 chain of layer used other than 2 link identification group of layer
2 link identification of layer that line is communicated as the D2D that UE is intended to other each UE are established；
2 link identification of layer used in communicating in UE with other each established D2D of UE, which belongs to, described has used 2 link of layer
When mark group, which is changed to 2 link identification of layer used other than 2 link identification group of layer,
And as 2 link identification of layer for carrying out D2D communication with the UE.
Preferably, further comprising:
It determines that UE carries out D2D with other each UE and communicates 2 link identification of used layer, and carries out D2D with the UE and lead to
2 link identification of layer used in other UE of letter；
Broadcast carries the information of above-mentioned 2 link identification of layer.
Preferably, the information for carrying 2 link identification of layer is one of following information or a combination thereof:
The broadcast message being carried on SL-BCH；
The broadcast message being carried on SL-DCH；
The broadcast message being carried on SL-SCH；
The RRC information being carried on PC5 interface transport channel；
The NAS message being carried on PC5 interface transport channel；
The message being carried on the MAC PDU of MAC layer.
The embodiment of the invention provides a kind of notification methods of 2 link identification of layer, comprising:
It determines that UE carries out D2D with other each UE and communicates 2 link identification of used layer, and carries out D2D with the UE and lead to
2 link identification of layer used in other UE of letter；
Broadcast carries the information of above-mentioned 2 link identification of layer.
Preferably, the information for carrying 2 link identification of layer is one of following information or a combination thereof:
The broadcast message being carried on SL-BCH；
The broadcast message being carried on SL-DCH；
The broadcast message being carried on SL-SCH；
The RRC information being carried on PC5 interface transport channel；
The NAS message being carried on PC5 interface transport channel；
The message being carried on the MAC PDU of MAC layer.
The embodiment of the invention provides a kind of selection devices of 2 link identification of layer, comprising:
Receiving module, for receiving the information for carrying 2 link identification of layer of other UE broadcast on UE；
Determining module, for having used 2 link identification group of layer according to 2 link identification of the layer determination carried in each information is described,
It is described to be other UE with 2 link identification group of layer and carried out 2 chain of layer used in the UE other than the UE of D2D communication with other UE
Line；
Selecting module, for having used 2 link identification group of layer according to described, selection is described have been used other than 2 link identification group of layer
2 link identification of layer 2 link identification of layer of D2D communications is carried out as UE and other each UE.
Preferably, selecting module is further used for:
After 2 link identification of layer used in determining UE with other each established D2D of UE and communicating, and/or, in determination
UE is intended to establish after D2D communicates with other each UE, one of as follows or a combination thereof execution；
When UE desire is established D2D with other each UE and is communicated, selection 2 chain of layer used other than 2 link identification group of layer
2 link identification of layer that line is communicated as the D2D that UE is intended to other each UE are established；
2 link identification of layer used in communicating in UE with other each established D2D of UE, which belongs to, described has used 2 link of layer
When mark group, which is changed to 2 link identification of layer used other than 2 link identification group of layer,
And as 2 link identification of layer for carrying out D2D communication with the UE.
Preferably, determining module is further used for determining that UE carries out D2D with other each UE and communicates 2 link of used layer
Mark, and 2 link identification of layer used in other UE of D2D communication is carried out with the UE；
Further comprise: broadcast module, for broadcasting the information for carrying above-mentioned 2 link identification of layer.
Preferably, the information for carrying 2 link identification of layer is one of following information or a combination thereof:
The broadcast message being carried on SL-BCH；
The broadcast message being carried on SL-DCH；
The broadcast message being carried on SL-SCH；
The RRC information being carried on PC5 interface transport channel；
The NAS message being carried on PC5 interface transport channel；
The message being carried on the MAC PDU of MAC layer.
The embodiment of the invention provides a kind of notice devices of 2 link identification of layer, comprising:
Determining module communicates 2 link identification of used layer, Yi Jiyu for determining that UE carries out D2D with other each UE
The UE carries out 2 link identification of layer used in other UE of D2D communication；
Broadcast module, for broadcasting the information for carrying above-mentioned 2 link identification of layer.
Preferably, the information for carrying 2 link identification of layer is one of following information or a combination thereof:
The broadcast message being carried on SL-BCH；
The broadcast message being carried on SL-DCH；
The broadcast message being carried on SL-SCH；
The RRC information being carried on PC5 interface transport channel；
The NAS message being carried on PC5 interface transport channel；
The message being carried on the MAC PDU of MAC layer.
The present invention has the beneficial effect that:
In technical solution provided in an embodiment of the present invention, in the notification scheme of 2 link identification of layer, each UE can broadcast UE
D2D is carried out with other each UE and communicates 2 link identification of used layer, and is made with the UE other UE for carrying out D2D communication
2 link identification of layer.
And in the selection scheme of 2 link identification of layer, each UE can receive other UE broadcast carry 2 link identification of layer
Information；And 2 link identification of layer used other than 2 link identification group of layer is selected to carry out as UE and other each UE accordingly
2 link identification of layer of D2D communication.
Since UE can be known by broadcast and inform that other can carry out layer 2 used in the UE of D2D communication therewith
Link identification, and selection is using 2 link identification of layer do not conflict, unique accordingly, to give PC5 interface UE mark conflict
The scheme of detection provides solution on the basis of existing D2D communication mechanism for the One-to-one communication of access layer, guarantees
UE and other UE carries out the uniqueness of used layer 2 link identification when D2D communication, avoids multiple UE and uses identical UE
The problem of data transmit-receive mistake caused by mark.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes a part of the invention, this hair
Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is D2D discovery/communication structure schematic diagram in the embodiment of the present invention；
Fig. 2 is SL-SCH MAC subheader schematic diagram in the embodiment of the present invention；
It is the schematic diagram of a scenario that UE mark conflict occurs in PC5 interface One-to-one communication that Fig. 3, which is in the embodiment of the present invention,；
Fig. 4 is the notification method implementation process diagram of 2 link identification of middle layer of the embodiment of the present invention；
Fig. 5 is the selection method implementation process diagram of 2 link identification of middle layer of the embodiment of the present invention；
Fig. 6 is the corresponding MAC subheader structural schematic diagram of MAC PDU in the embodiment of the present invention；
Fig. 7 is MAC PDU form schematic diagram in the embodiment of the present invention；
Fig. 8 is the communication scenes schematic diagram that One-to-one communication initiates the selection of 2 link identification of front layer in the embodiment of the present invention；
Fig. 9 is the communication scenes signal of 2 link identification conflict of discovery layer during One-to-one communication in the embodiment of the present invention
Figure；
Figure 10 is the selection device structural schematic diagram of 2 link identification of middle layer of the embodiment of the present invention；
Figure 11 is the notice apparatus structure schematic diagram of 2 link identification of middle layer of the embodiment of the present invention；
Figure 12 is mono- structural schematic diagram of UE in the embodiment of the present invention；
Figure 13 is bis- structural schematic diagram of UE in the embodiment of the present invention.
Specific embodiment
Description of specific embodiments of the present invention with reference to the accompanying drawing.
D2D (Device-to-Device, device-to-device), i.e. terminal direct connection technology refer to that neighbouring terminal can be
In short range in such a way that direct connected link carries out data transmission, do not need to be turned by central node (i.e. base station)
Hair does not need to carry out the information transmission between UE by traditional cellular link yet.
Fig. 1 is D2D discovery/communication structure schematic diagram, as shown, in 3GPP, D2D close to service technology include following two
Major class:
D2D discovery: UE uses E-UTRA (Evolution-Universal Terrestrial Radio Access
Network, the Universal Terrestrial wireless access network of evolution) confirm another UE in its vicinity.For example, D2D UE can be used
The service comes the taxi of finding nearby, the friend of searching in its vicinity etc.；
D2D communication: UE close to each other will pass through network transmission by directly establishing link between two UE originally
Communication link be converted into local direct communication link, save a large amount of bandwidth and network efficiency；Or two phase mutual connections
Close UE can use direct point-to-point data link to obtain the cheap communication service of stable high speed.Usually exist close to communication for service
It is carried out under network controls or auxiliary, eNB (evolution base station) possibly even can be the UE dynamic carried out close to communication for service
Distribution resource.
For ease of description, two kinds of Linktypes are defined in embodiments of the present invention are as follows:
D2D link: refer to the link directly communicated between equipment and equipment；
D2N link: the link communicated between equipment and network node.
It is divided in addition, participating in D2D discovery/communication UE for two kinds of roles:
D2D sends UE: i.e. transmission D2D discovery/communication information UE；
D2D receives UE: i.e. reception D2D sends discovery/communication information UE that UE is sent.
Fig. 2 is SL-SCH (Sidelink Shared Channel leads directly to link shared channels) MAC subheader (son
Head) schematic diagram, as shown, UE passes through in MAC subheader in data packet in PC5 interface in the address procedures of PC5 interface communication
The SRC (source address, Source) and DST (destination address, Destination) of carrying combine the channel scrambling code of physical layer to determine
The sender and recipient of PC5 mouthfuls of data.
Wherein SRC is 24bits, and value is equal to ProSe Key Management Function (ProSe key management function
Energy；ProSe:Proximity-based Services is adjacent to business) distribution ProSe UE ID (customer equipment identification),
One UE of unique identification in one group.DST is 16bits, and value is equal to the ProSe Layer- of ProSe Function distribution
2Group ID high 16, one group of unique identification, if UE off-grid, ProSe Layer-2Group ID (2 groups of mark of layer)
Use pre-configured value.The least-significant byte of ProSe Layer-2Group ID is the channel scrambling code for being used as the physical layer of PC5 interface.
PC5 interface is based on realizing one-to-many D2D communication with upper type.
Fig. 3 is the schematic diagram of a scenario that UE mark conflict occurs in PC5 interface One-to-one communication, as shown, in PC5 interface
In the scene that UE mark conflict occurs in One-to-one communication, from the angle of UE1, illustrate the field that UE mark conflict may occur
Scape.The white space of innermost layer is the region that UE1 can directly carry out D2D communication, that is to say, that UE1 can establish straight with UE2
The PC5 mouth link connect.The dotted region of the second layer is the region of D2D communication cannot directly to be carried out with UE1, but be located at dotted region
UE directly can carry out direct D2D communication with some UE for being located at white space, such as UE3 can be with UE2 direct communication.
The latticed region of third layer be dotted region outside all areas, its main feature is that UE therein can neither with UE1 direct communication,
Direct D2D communication can not be carried out with any UE of white space.
UE mark collision detection in, UE1 cannot be located at white space UE occur mark collision, can not with it is dotted
Mark collision occurs for the UE in region, but UE1 can use identical mark with the UE for being located at latticed region, because of UE1 and net
The UE in trellis region uncommon direct communication object, therefore not will cause the erroneous judgement of data transmit-receive from each other.
That is, the SRC (ProSe UE ID) for identifying UE is by ProSe Key in one-to-many communication
Management Function distribution, and can ensure it is unique in a group, therefore UE does not need to carry out UE mark
Collision detection.
But inventor note that
With Relay (relaying), MCPTT (Mission Critical Push To Talk, the promotion pair of key task
Words) etc. functions introducing, it is desirable that access layer can provide one-to-one communication, use in One-to-one communication UE identify as source and mesh
Address, UE mark can be global unique (needing longer digit) or uniquely (do not need too long of position in a certain range
Number) 2 kinds of modes, in the unique mode of a certain range, UE just needs to be identified collision detection, because if rushing
It is prominent, it will lead to multiple UE using identical UE mark and cause data transmit-receive mistake.But since the prior art does not need to carry out UE
Collision detection is identified, so in the prior art also with regard to there is no the schemes for carrying out UE mark collision detection.
Based on this, the scheme of PC5 interface UE mark collision detection will be provided in the embodiment of the present invention, to guarantee UE and its
His UE carries out the uniqueness of used 2 link identification of layer when D2D communication, so that multiple UE be avoided to make using identical UE mark
At data transmit-receive mistake problem.It is illustrated below.
In technical solution provided in an embodiment of the present invention, on the one hand, UE can broadcast 2 link identification of layer itself used；Separately
On the one hand, 2 link identification of layer used in other UE can be also monitored, to carry out collision detection, to guarantee 2 link identification of layer
Uniqueness.Correspondingly, the UE scheme for broadcasting 2 link identification of layer itself used, Yi Jijian will be provided in following example respectively
2 link identification of layer used in other UE is listened to carry out the scheme of collision detection.It is readily appreciated that, can be adopted simultaneously on same UE
It, can also be with a UE only with one of scheme with the two schemes.Obviously, each UE is always using one of side
When case, the uniqueness to guarantee 2 link identification of layer is matched with the UE of another scheme is used.
Fig. 4 is the notification method implementation process diagram of 2 link identification of layer, as shown in the figure, comprising:
Step 401 determines that UE and other each UE carry out D2D and communicates 2 link identification of used layer, and with the UE into
2 link identification of layer used in other UE of row D2D communication；
Step 402, broadcast carry the information of above-mentioned 2 link identification of layer.
Fig. 5 is the selection method implementation process diagram of 2 link identification of layer, as shown in the figure, comprising:
Step 501, the information for carrying 2 link identification of layer that other UE broadcast is received on UE；
Step 502, according to 2 link identification of layer that is carried in each information determine it is described used 2 link identification group of layer, it is described
It is other UE with 2 link identification group of layer and carries out 2 chain road sign of layer used in the UE other than the UE of D2D communication with other UE
Know；
Step 503 has used 2 link identification group of layer, the selection layer 2 used other than 2 link identification group of layer according to described
Link identification carries out 2 link identification of layer of D2D communication as UE and other each UE.
In implementation, in step 402 and step 501, the information for carrying 2 link identification of layer can be one of following information
Or a combination thereof:
The broadcast letter being carried on SL-BCH (Sidelink Broadcast Channel leads directly to link broadcast channel)
Breath；
The broadcast being carried on SL-DCH (Sidelink Discovery Channel leads directly to link dedicated transmission channel)
Information；
The broadcast message being carried on SL-SCH (Sidelink Shared Channel leads directly to link shared channels)；
The RRC (Radio Resource Control, wireless heterogeneous networks) being carried on PC5 interface transport channel disappears
Breath；
NAS (Non Access Stratum, the Non-Access Stratum) message being carried on PC5 interface transport channel；
The message being carried on the MAC PDU (Protocol Data Unit, protocol Data Unit) of MAC layer.
Specifically, layer 2 identifies, broadcast message can be carried on SL-BCH or SL-DCH or SL-SCH or other any PC5 connect
RRC or NAS message on port transmission channel are also possible to the MAC PDU an of MAC layer.
Fig. 6 is the corresponding MAC subheader structural schematic diagram of MAC PDU, and Fig. 7 is MAC PDU form schematic diagram, with
For MAC PDU, corresponding MAC subheader and MAC PDU format be can be as shown in Figure 6.In order to other areas MAC PDU
Point, new LCID (Logical Channel ID, Logic Channel Identifier) can be introduced.
When the technical solution that Fig. 4 and Fig. 5 is provided is used cooperatively, the PC5 interface UE that the embodiment of the present invention provides identifies punching
Prominent detection scheme is characterized by, and carries out the UE of D2D transmitting-receiving for 2 link identification of layer (the ProSe Layer- of oneself in PC5 interface
2 link identification of layer of UE 2ID) and with oneself communicated is broadcast to neighbouring UE, and each UE is starting starting and its
Before the One-to-one communication of his UE, monitor the layer 2 link identification broadcast message of a period of time neighbouring UE, avoid using with receive
Identical 2 link identification of UE layer of any 2 link identification of UE layer initiates One-to-one communication.
In communication process, UE in addition to send 2 link identification broadcast message of UE layer (including oneself 2 link identification of layer with
And 2 link identification of layer of the UE communicated with oneself) outside, it is also necessary to monitor 2 link identification of UE layer that nearby other UE are sent
Broadcast message, as the UE in 2 link identification information of UE layer for receiving the UE broadcast not communicated with oneself comprising oneself using
When 2 link identification of layer, then it is assumed that detect the 2 link identification conflict of UE layer.After detecting conflict, UE need to only reselect one with
2 link identification of layer that all 2 link identifications of layer received are different from, and notify it is all just with oneself carry out One-to-one communication
UE.Further, the UE and its Correspondent Node UE need to update its 2 link identification broadcast message of layer naturally.
In implementation, the basis of step 503 is described use 2 link identification group of layer, used described in selection 2 link identification group of layer with
Outer 2 link identification of layer carries out 2 link identification of layer of D2D communication as UE and other each UE, may include:
After 2 link identification of layer used in determining UE with other each established D2D of UE and communicating, and/or, in determination
UE is intended to establish after D2D communicates with other each UE, one of as follows or a combination thereof execution；
When UE desire is established D2D with other each UE and is communicated, selection 2 chain of layer used other than 2 link identification group of layer
2 link identification of layer that line is communicated as the D2D that UE is intended to other each UE are established；
2 link identification of layer used in communicating in UE with other each established D2D of UE, which belongs to, described has used 2 link of layer
When mark group, which is changed to 2 link identification of layer used other than 2 link identification group of layer,
And as 2 link identification of layer for carrying out D2D communication with the UE.
In implementation, select 2 link identification of layer used other than 2 link identification group of layer as UE and other each UE
After 2 link identification of layer for carrying out D2D communication, in order to so that other UE is learned that UE is used 2 link identification of layer the case where, can also be into
One step includes:
It determines that UE carries out D2D with other each UE and communicates 2 link identification of used layer, and carries out D2D with the UE and lead to
2 link identification of layer used in other UE of letter；
Broadcast carries the information of above-mentioned 2 link identification of layer.
It is illustrated below with specific example.
Embodiment 1
The present embodiment wishes that establishing D2D with another UE (being UE5 in example) communicates when UE (being UE1 in example) to illustrate
When, determine the implementation process of 2 link identification of UE layer.Namely:
Determining that UE is intended to establish after D2D communicates with other each UE, when UE is intended to establish D2D with other each UE and communicate,
2 link identification of layer used other than 2 link identification group of layer is selected to communicate as the D2D that UE is intended to other each UE are established
2 link identification of layer.
Specifically, in the selection of 2 link identification of layer, being to have used 2 link identification of layer described before One-to-one communication initiation
Other than group, 2 link identification of layer is selected as 2 link identification of layer communicated with other UE D2D established is intended to.
Fig. 8 is the communication scenes schematic diagram that One-to-one communication initiates the selection of 2 link identification of front layer, most interior used in figure
The white space of layer, the meaning in the latticed region of the dotted region of the second layer, third layer can refer to Fig. 3, shown in Fig. 8
Under environment, it is assumed that
UE5 (2 link identification of layer is L2 ID5) with UE2 (2 link identification of layer is L2 ID2) and UE7 (2 chain road sign of layer
Knowing is L2 ID7) carry out One-to-one communication；
UE2 (2 link identification of layer is L2 ID2) with UE3 (2 link identification of layer is L2 ID3) and UE5 (2 chain road sign of layer
Knowing is L2 ID5) carry out One-to-one communication；
UE3 (2 link identification of layer is L2 ID3) with UE2 (2 link identification of layer is L2 ID2) and UE4 (2 chain road sign of layer
Knowing is L2 ID4) carry out One-to-one communication；
UE1, UE6 and UE8 are not communicated with other UE.
The 2 link identification broadcast message of layer of UE2 broadcast are as follows: L2 ID2, L2 ID3, L2 ID5；
The 2 link identification broadcast message of layer of UE3 broadcast are as follows: L2 ID3, L2 ID2, L2 ID4；
The 2 link identification broadcast message of layer of UE4 broadcast are as follows: L2 ID4, L2 ID3；
The 2 link identification broadcast message of layer of UE5 broadcast are as follows: L2 ID5, L2 ID2, L2 ID7；
The 2 link identification broadcast message of layer of UE7 broadcast are as follows: L2 ID7, L2 ID5.
In example, UE1 wishes to initiate the One-to-one communication with UE5, and UE1 can receive 2 link identification of layer of UE2 and UE5
Broadcast message, therefore 2 link identification of layer being currently being used that UE1 can be known are as follows: L2 ID2, L2 ID3, L2 ID5, L2
ID7, then, UE1 needs avoid selecting this 42 link identifications of layer.
Specifically, the 2 link identification service condition of layer that UE1 can will be broadcasted according to UE near receiving, by these
For the mark of layer 2 through being used labeled as unavailable, other be available, and from available L2 identify in random selection or according to one
Set pattern then selects a L2 mark.UE1 has selected layer 2 link identification of the L2 ID4 as oneself in the present embodiment, and builds with UE5
Vertical One-to-one communication.
In example, it can further include:
It determines that UE carries out D2D with other each UE and communicates 2 link identification of used layer, and carries out D2D with the UE and lead to
2 link identification of layer used in other UE of letter；
Broadcast carries the information of above-mentioned 2 link identification of layer.
That is, the 2 link identification broadcast information updating of layer of each UE later are as follows:
The 2 link identification broadcast message of layer of UE1 broadcast are as follows: L2 ID4, L2 ID5；
The 2 link identification broadcast message of layer of UE2 broadcast are as follows: L2 ID2, L2 ID3, L2 ID5；
The 2 link identification broadcast message of layer of UE3 broadcast are as follows: L2 ID3, L2 ID2, L2 ID4；
The 2 link identification broadcast message of layer of UE4 broadcast are as follows: L2 ID4, L2 ID3；
The 2 link identification broadcast message of layer of UE5 broadcast are as follows: L2 ID5, L2 ID2, L2 ID7, L2 ID4；
The 2 link identification broadcast message of layer of UE7 broadcast are as follows: L2 ID7, L2 ID5.
Embodiment 2
The present embodiment (changes for UE4) in example as a certain UE to illustrate, such as leads to 2 link identification of layer after moving
It changes, there are when D2D communication between UE (being UE1 in example) and another UE (being UE5 in example), when the UE (is in example
UE4 variation) causes UE (after clashing in example for 2 link identification of UE1) layer, to determine the implementation of 2 link identification of UE layer
Journey.Namely:
2 link identification of layer used in communicating in UE with other each established D2D of UE, which belongs to, described has used 2 link of layer
When mark group, which is changed to 2 link identification of layer used other than 2 link identification group of layer,
And as 2 link identification of layer for carrying out D2D communication with the UE.
Specifically, during One-to-one communication, after the conflict of 2 link identification of discovery layer, in the selection of 2 link identification of layer,
It is that UE1 changes 2 link identification of layer currently in use, has been used other than 2 link identification group of layer described, selected 2 chain road sign of a layer
Know as 2 link identification of layer communicated with the D2D that UE5 is established.
Fig. 9 is the communication scenes schematic diagram of 2 link identification conflict of discovery layer during One-to-one communication, used in figure
The white space of innermost layer, the dotted region of the second layer, third layer latticed region meaning can refer to Fig. 3, in Fig. 9 institute
In the environment of showing, it is assumed that One-to-one communication relationship is the same as embodiment 1.
Assume again: UE4 is moved to dotted region and initiates the One-to-one communication with UE2, later 2 link identification of layer of each UE
Broadcast information updating are as follows:
The 2 link identification broadcast message of layer of UE1 broadcast are as follows: L2 ID4, L2 ID5；
The 2 link identification broadcast message of layer of UE2 broadcast are as follows: L2 ID2, L2 ID3, L2 ID5, L2 ID4；
The 2 link identification broadcast message of layer of UE3 broadcast are as follows: L2 ID3, L2 ID2, L2 ID4；
The 2 link identification broadcast message of layer of UE4 broadcast are as follows: L2 ID4, L2 ID3, L2 ID2；
The 2 link identification broadcast message of layer of UE5 broadcast are as follows: L2 ID5, L2 ID2, L2 ID7, L2 ID4；
The 2 link identification broadcast message of layer of UE7 broadcast are as follows: L2 ID7, L2 ID5；
Example in, UE1 receive UE2 and UE5 2 link identification broadcast message of layer after, in addition to oneself have One-to-one communication pass
In the 2 link identification broadcast message of layer that the UE (UE5) of system is sent outside comprising 2 link identification of layer (L2 ID4) that oneself uses, with
It also include the layer 2 oneself used in the 2 link identification broadcast message of layer for oneself not having the UE (UE2) of One-to-one communication relationship to send
Link identification (L2 ID4), thus judge that 2 link identification conflict of layer occurs, then, UE1 reselects 2 link identification (L2 of a layer
ID1), new 2 link identification of layer notice is given into the UE (UE5) for oneself having One-to-one communication relationship.
That is, 2 link identification of layer that the UE for carrying out D2D communication is broadcasted by detecting other UE, judges whether to occur
Layer 2 link identifications collision, when as 2 link identification of layer used in 2 link identification of layer that oneself uses of discovery and other UE,
Used 2 link identification of layer is changed to 2 link identification of layer used other than 2 link identification group of layer, as
The UE carries out 2 link identification of layer of D2D communication, and new 2 link identification of layer notice is given its UE for carrying out D2D communication, more
The 2 link identification broadcast message of layer of new UE.
In example, it can further include:
It determines that UE carries out D2D with other each UE and communicates 2 link identification of used layer, and carries out D2D with the UE and lead to
2 link identification of layer used in other UE of letter；
Broadcast carries the information of above-mentioned 2 link identification of layer.
That is, the 2 link identification broadcast information updating of layer of each UE later are as follows:
The 2 link identification broadcast message of layer of UE1 broadcast are as follows: L2 ID1, L2 ID5；
The 2 link identification broadcast message of layer of UE2 broadcast are as follows: L2 ID2, L2 ID3, L2 ID5, L2 ID4；
The 2 link identification broadcast message of layer of UE3 broadcast are as follows: L2 ID3, L2 ID2, L2 ID4；
The 2 link identification broadcast message of layer of UE4 broadcast are as follows: L2 ID4, L2 ID3, L2 ID2；
The 2 link identification broadcast message of layer of UE5 broadcast are as follows: L2 ID5, L2 ID2, L2 ID7, L2 ID1；
The 2 link identification broadcast message of layer of UE7 broadcast are as follows: L2 ID7, L2 ID5.
Based on the same inventive concept, selection device, one kind of a kind of 2 link identification of layer are additionally provided in the embodiment of the present invention
The notice device of 2 link identification of layer, the selection method of the principle and a kind of 2 link identification of layer that are solved the problems, such as due to these devices,
A kind of notification method of 2 link identification of layer is similar, therefore the implementation of these devices may refer to the implementation of method, repeats place not
It repeats again.
Figure 10 is the selection device structural schematic diagram of 2 link identification of layer, as shown, may include:
Receiving module 1001, for receiving the information for carrying 2 link identification of layer of other UE broadcast on UE；
Determining module 1002, for having used 2 link identification of layer according to 2 link identification of the layer determination carried in each information is described
Group, it is described to be other UE with 2 link identification group of layer and carried out layer used in the UE other than the UE of D2D communication with other UE
2 link identifications；
Selecting module 1003, for having used 2 link identification group of layer according to described, selection is described to have used 2 link identification group of layer
2 link identification of layer in addition carries out 2 link identification of layer of D2D communication as UE and other each UE.
In implementation, selecting module can also be further used for:
After 2 link identification of layer used in determining UE with other each established D2D of UE and communicating, and/or, in determination
UE is intended to establish after D2D communicates with other each UE, one of as follows or a combination thereof execution；
When UE desire is established D2D with other each UE and is communicated, selection 2 chain of layer used other than 2 link identification group of layer
2 link identification of layer that line is communicated as the D2D that UE is intended to other each UE are established；
2 link identification of layer used in communicating in UE with other each established D2D of UE, which belongs to, described has used 2 link of layer
When mark group, which is changed to 2 link identification of layer used other than 2 link identification group of layer,
And as 2 link identification of layer for carrying out D2D communication with the UE.
In implementation, determining module can also be further used for determining that UE and other each UE are carried out used in D2D communication
2 link identification of layer, and 2 link identification of layer used in other UE of D2D communication is carried out with the UE；
Then it can further include in device:
Broadcast module 1004, for broadcasting the information for carrying above-mentioned 2 link identification of layer.
In implementation, the information for carrying 2 link identification of layer can be one of following information or a combination thereof:
The broadcast message being carried on SL-BCH；
The broadcast message being carried on SL-DCH；
The broadcast message being carried on SL-SCH；
The RRC information being carried on PC5 interface transport channel；
The NAS message being carried on PC5 interface transport channel；
The message being carried on the MAC PDU of MAC layer.
Figure 11 is the notice apparatus structure schematic diagram of 2 link identification of layer, as shown, may include:
Determining module 1101 communicates 2 link identification of used layer for determining that UE carries out D2D with other each UE, with
And 2 link identification of layer used in other UE of D2D communication is carried out with the UE；
Broadcast module 1102, for broadcasting the information for carrying above-mentioned 2 link identification of layer.
In implementation, the information for carrying 2 link identification of layer can be one of following information or a combination thereof:
The broadcast message being carried on SL-BCH；
The broadcast message being carried on SL-DCH；
The broadcast message being carried on SL-SCH；
The RRC information being carried on PC5 interface transport channel；
The NAS message being carried on PC5 interface transport channel；
The message being carried on the MAC PDU of MAC layer.
For convenience of description, each section of apparatus described above is divided into various modules with function or unit describes respectively.
Certainly, each module or the function of unit can be realized in same or multiple softwares or hardware in carrying out the present invention.
When implementing technical solution provided in an embodiment of the present invention, can implement as follows.
Figure 12 is mono- structural schematic diagram of UE, as shown, user equipment includes:
Processor 1200 executes following process for reading the program in memory 1220:
2 link identification group of layer has been used according to 2 link identification of the layer determination carried in each information is described, it is described to have used 2 chain of layer
Line group is other UE and carries out 2 link identification of layer used in the UE other than the UE of D2D communication with other UE；
2 link identification group of layer, selection 2 link identification of layer used other than 2 link identification group of layer have been used according to described
2 link identification of layer of D2D communication is carried out as UE and other each UE.
Transceiver 1210 executes following process for the sending and receiving data under the control of processor 1200:
The information for carrying 2 link identification of layer of other UE broadcast is received on UE.
In implementation, 2 link identification group of layer, selection 2 chain of layer used other than 2 link identification group of layer have been used according to described
Line carries out 2 link identification of layer of D2D communication as UE and other each UE, comprising:
After 2 link identification of layer used in determining UE with other each established D2D of UE and communicating, and/or, in determination
UE is intended to establish after D2D communicates with other each UE, one of as follows or a combination thereof execution；
When UE desire is established D2D with other each UE and is communicated, selection 2 chain of layer used other than 2 link identification group of layer
2 link identification of layer that line is communicated as the D2D that UE is intended to other each UE are established；
2 link identification of layer used in communicating in UE with other each established D2D of UE, which belongs to, described has used 2 link of layer
When mark group, which is changed to 2 link identification of layer used other than 2 link identification group of layer,
And as 2 link identification of layer for carrying out D2D communication with the UE.
In implementation, it can further include:
It determines that UE carries out D2D with other each UE and communicates 2 link identification of used layer, and carries out D2D with the UE and lead to
2 link identification of layer used in other UE of letter；
Broadcast carries the information of above-mentioned 2 link identification of layer.
In implementation, the information for carrying 2 link identification of layer is one of following information or a combination thereof:
The broadcast message being carried on SL-BCH；
The broadcast message being carried on SL-DCH；
The broadcast message being carried on SL-SCH；
The RRC information being carried on PC5 interface transport channel；
The NAS message being carried on PC5 interface transport channel；
The message being carried on the MAC PDU of MAC layer.
Wherein, in Figure 12, bus architecture may include the bus and bridge of any number of interconnection, specifically by processor
The various circuits for the memory that 1200 one or more processors represented and memory 1220 represent link together.Total coil holder
Structure can also link together various other circuits of such as peripheral equipment, voltage-stablizer and management circuit or the like, this
It is all a bit it is known in the art, therefore, it will not be further described herein.Bus interface provides interface.Transceiver
1210 can be multiple element, that is, include transmitter and receiver, provide for logical with various other devices over a transmission medium
The unit of letter.For different user equipmenies, user interface 1230, which can also be, the interface for needing equipment external is inscribed, even
The equipment connect includes but is not limited to keypad, display, loudspeaker, microphone, control stick etc..
Processor 1200, which is responsible for management bus architecture and common processing, memory 1220, can store processor 1200 and exists
Execute used data when operation.
Figure 13 is bis- structural schematic diagram of UE, as shown, user equipment includes:
Processor 1300 executes following process for reading the program in memory 1320:
It determines that UE carries out D2D with other each UE and communicates 2 link identification of used layer, and carries out D2D with the UE and lead to
2 link identification of layer used in other UE of letter；
Transceiver 1310 executes following process for sending data under the control of processor 1300:
Broadcast carries the information of above-mentioned 2 link identification of layer.
In implementation, the information for carrying 2 link identification of layer is one of following information or a combination thereof:
The broadcast message being carried on SL-BCH；
The broadcast message being carried on SL-DCH；
The broadcast message being carried on SL-SCH；
The RRC information being carried on PC5 interface transport channel；
The NAS message being carried on PC5 interface transport channel；
The message being carried on the MAC PDU of MAC layer.
Wherein, in Figure 13, bus architecture may include the bus and bridge of any number of interconnection, specifically by processor
The various circuits for the memory that 1300 one or more processors represented and memory 1320 represent link together.Total coil holder
Structure can also link together various other circuits of such as peripheral equipment, voltage-stablizer and management circuit or the like, this
It is all a bit it is known in the art, therefore, it will not be further described herein.Bus interface provides interface.Transceiver
1310 can be multiple element, that is, include transmitter and receiver, provide for logical with various other devices over a transmission medium
The unit of letter.For different user equipmenies, user interface 1330, which can also be, the interface for needing equipment external is inscribed, even
The equipment connect includes but is not limited to keypad, display, loudspeaker, microphone, control stick etc..
Processor 1300, which is responsible for management bus architecture and common processing, memory 1320, can store processor 1300 and exists
Execute used data when operation.
In conclusion incite somebody to action oneself in the UE that PC5 interface carries out D2D transmitting-receiving in technical solution provided in an embodiment of the present invention
Oneself 2 link identification of layer and 2 link identification of layer of the UE communicated with oneself are broadcast to neighbouring UE, and each UE passes through
2 link identification of layer monitoring before initiating communication and the 2 link identification collision detection of layer in communication process realize 2 link identification of layer
Conflict avoidance and solution.Specifically include following scheme:
The UE for carrying out One-to-one communication broadcasts 2 link identification of layer of oneself and the UE communicated with oneself.
UE first reads the 2 link identification broadcast message of layer of UE nearby, selection before initiating the One-to-one communication with other UE
Layer 2 link identification different from 2 link identification of layer received.
UE continues the 2 link identification broadcast message of layer of UE around monitoring in communication process, non-logical with oneself when receiving
2 link identification of UE layer in 2 link identification information of UE layer of the UE broadcast of letter comprising oneself using, then it is assumed that detect UE layer 2
Link identification conflict.
After the conflict of 2 link identification of layer occurs for UE judgement, select one it is new different from all 2 link identifications of layer received
2 link identification of layer, and by 2 link identification of mew layer notice give the UE oneself communicated.
The UE of 2 link identification of layers of alterations and the 2 link identification broadcast message of UE update step communicated.
UE can be with the database of 2 link identification occupancy situation of maintenance level, 2 link of layer broadcasted according to UE near receiving
Mark update the database, 2 link identification of layer received is designated as it is unavailable, can when UE needs 2 link identification of generation layer
To be generated from available 2 link identification of layer.
UE send 2 link identification broadcast message of layer can be carried on SL-BCH or SL-DCH or SL-SCH or other
RRC or NAS message on what PC5 interface transport channel, are also possible to the MAC PDU an of MAC layer.
The embodiment of the invention provides the conflict avoidances and collision resolution of a kind of PC5 interface UE mark, thus existing
On the basis of having D2D communication mechanism, solution is provided for the One-to-one communication of access layer.
It should be understood by those skilled in the art that, the embodiment of the present invention can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the present invention
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the present invention, which can be used in one or more,
The shape for the computer program product implemented in usable storage medium (including but not limited to magnetic disk storage and optical memory etc.)
Formula.
The present invention be referring to according to the method for the embodiment of the present invention, the process of equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (12)
1. a kind of selection method of 2 link identification of layer characterized by comprising
The information for carrying 2 link identification of layer of other UE broadcast is received on user equipment (UE)；
2 link identification group of layer has been used according to 2 link identification of the layer determination carried in each information, it is described to have used 2 link identification group of layer
It is other UE and carries out 2 link identification of layer used in the UE other than the UE of device-to-device D2D communication with other UE；
Used 2 link identification group of layer according to described, select 2 link identification of layer used other than 2 link identification group of layer as
UE and other each UE carries out 2 link identification of layer of D2D communication.
2. selection is described the method according to claim 1, wherein having used 2 link identification group of layer according to described
2 link identification of layer other than 2 link identification group of layer is used to carry out 2 link identification of layer of D2D communication, packet as UE and other each UE
It includes:
After 2 link identification of layer used in determining UE with other each established D2D of UE and communicating, and/or, determining that UE is intended to
It establishes after D2D communicates with other each UE, executes one of as follows or a combination thereof；
When UE desire is established D2D with other each UE and is communicated, the selection 2 chain road sign of layer used other than 2 link identification group of layer
Know 2 link identification of layer communicated as the D2D that UE is intended to other each UE are established；
2 link identification of layer used in communicating in UE with other each established D2D of UE, which belongs to, described has used 2 link identification of layer
When group, which is changed to 2 link identification of layer used other than 2 link identification group of layer, and will
It is as 2 link identification of layer for carrying out D2D communication with the UE.
3. method according to claim 1 or 2, which is characterized in that further comprise:
It determines that UE carries out D2D with other each UE and communicates 2 link identification of used layer, and carries out D2D communication with the UE
2 link identification of layer used in other UE；
Broadcast carries the information of above-mentioned 2 link identification of layer.
4. according to the method described in claim 3, it is characterized in that, the information for carrying 2 link identification of layer be following information it
One or a combination thereof:
The broadcast message being carried on straight-through link broadcast channel SL-BCH；
The broadcast message being carried on straight-through link dedicated transmission channel SL-DCH；
The broadcast message being carried on straight-through link shared channels SL-SCH；
The radio resource control RRC message being carried on PC5 interface transport channel；
The non access stratum NAS message being carried on PC5 interface transport channel；
The message being carried on the Medium Access Control (MAC) Protocol Data Unit PDU of media access control MAC layer.
5. a kind of notification method of 2 link identification of layer characterized by comprising
It determines that UE carries out D2D with other each UE and communicates 2 link identification of used layer, and carries out D2D communication with the UE
2 link identification of layer used in other UE；
Broadcast carries the information of above-mentioned 2 link identification of layer so as to receive the letter for carrying 2 link identification of layer of other UE broadcast
The UE of breath is determined according to 2 link identification of layer carried in each information have been used 2 link identification group of layer and has used 2 link of layer according to described
Mark group selects 2 link identification of layer used other than 2 link identification group of layer to carry out D2D as UE and other each UE and leads to
2 link identification of layer of letter, it is described to be other UE with 2 link identification group of layer and carry out device-to-device D2D communication with other UE
The UE other than UE used in 2 link identification of layer.
6. according to the method described in claim 5, it is characterized in that, the information for carrying 2 link identification of layer be following information it
One or a combination thereof:
The broadcast message being carried on SL-BCH；
The broadcast message being carried on SL-DCH；
The broadcast message being carried on SL-SCH；
The RRC information being carried on PC5 interface transport channel；
The NAS message being carried on PC5 interface transport channel；
The message being carried on the MAC PDU of MAC layer.
7. a kind of selection device of 2 link identification of layer characterized by comprising
Receiving module, for receiving the information for carrying 2 link identification of layer of other UE broadcast on UE；
Determining module, it is described to have used for having used 2 link identification group of layer according to 2 link identification of the layer determination carried in each information
2 link identification group of layer are other UE and carry out 2 link identification of layer used in the UE other than the UE of D2D communication with other UE；
Selecting module, for having used 2 link identification group of layer, the selection layer 2 used other than 2 link identification group of layer according to described
Link identification carries out 2 link identification of layer of D2D communication as UE and other each UE.
8. device according to claim 7, which is characterized in that selecting module is further used for:
After 2 link identification of layer used in determining UE with other each established D2D of UE and communicating, and/or, determining that UE is intended to
It establishes after D2D communicates with other each UE, executes one of as follows or a combination thereof；
When UE desire is established D2D with other each UE and is communicated, the selection 2 chain road sign of layer used other than 2 link identification group of layer
Know 2 link identification of layer communicated as the D2D that UE is intended to other each UE are established；
2 link identification of layer used in communicating in UE with other each established D2D of UE, which belongs to, described has used 2 link identification of layer
When group, which is changed to 2 link identification of layer used other than 2 link identification group of layer, and will
It is as 2 link identification of layer for carrying out D2D communication with the UE.
9. device according to claim 7 or 8, which is characterized in that
Determining module is further used for determining that UE carries out D2D with other each UE and communicates 2 link identification of used layer, Yi Jiyu
The UE carries out 2 link identification of layer used in other UE of D2D communication；
Further comprise: broadcast module, for broadcasting the information for carrying above-mentioned 2 link identification of layer.
10. device according to claim 9, which is characterized in that carry 2 link identification of layer information be following information it
One or a combination thereof:
The broadcast message being carried on SL-BCH；
The broadcast message being carried on SL-DCH；
The broadcast message being carried on SL-SCH；
The RRC information being carried on PC5 interface transport channel；
The NAS message being carried on PC5 interface transport channel；
The message being carried on the MAC PDU of MAC layer.
11. a kind of notice device of 2 link identification of layer characterized by comprising
Determining module communicate 2 link identification of used layer for determining that UE and other each UE carry out D2D, and with the UE
Carry out 2 link identification of layer used in other UE of D2D communication；
Broadcast module, for broadcast carry the information of above-mentioned 2 link identification of layer so that receive other UE broadcast carry layer 2
The UE of the information of link identification has used 2 link identification group of layer and according to institute according to 2 link identification of the layer determination carried in each information
It states and has used 2 link identification group of layer, select 2 link identification of layer used other than 2 link identification group of layer each with other as UE
A UE carries out 2 link identification of layer of D2D communication, described to be other UE with 2 link identification group of layer and carry out equipment with other UE
2 link identification of layer used in UE other than the UE communicated to equipment D2D.
12. device according to claim 11, which is characterized in that the information for carrying 2 link identification of layer is following information
One of or a combination thereof:
The broadcast message being carried on SL-BCH；
The broadcast message being carried on SL-DCH；
The broadcast message being carried on SL-SCH；
The RRC information being carried on PC5 interface transport channel；
The NAS message being carried on PC5 interface transport channel；
The message being carried on the MAC PDU of MAC layer.
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| CN201510346634.7A CN106331978B (en) | 2015-06-19 | 2015-06-19 | A kind of selection, notification method and the device of 2 link identification of layer |
| PCT/CN2016/085611 WO2016202227A1 (en) | 2015-06-19 | 2016-06-13 | Selection and notification method and device for layer 2 link identifier |
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| CN201510346634.7A CN106331978B (en) | 2015-06-19 | 2015-06-19 | A kind of selection, notification method and the device of 2 link identification of layer |
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| WO2018176227A1 (en) * | 2017-03-28 | 2018-10-04 | 华为技术有限公司 | Data processing method and apparatus |
| CN109548076B (en) * | 2017-08-02 | 2020-12-08 | 华为技术有限公司 | Data repeat transmission method and device |
| WO2019216726A1 (en) | 2018-05-11 | 2019-11-14 | Samsung Electronics Co., Ltd. | Method and system for handling dynamic group creation in v2x system |
| CN111182655B (en) * | 2018-11-09 | 2021-09-07 | 华硕电脑股份有限公司 | Method and apparatus for improving connection of sidelink communications in a wireless communication system |
| CN111132073B (en) * | 2018-11-13 | 2024-03-01 | 维沃移动通信有限公司 | Multicast communication link layer identifier updating method, device and terminal equipment |
| CN111867146B (en) * | 2019-04-30 | 2022-07-22 | 大唐移动通信设备有限公司 | Identification information sending and receiving method, equipment and device |
| WO2021081928A1 (en) * | 2019-10-31 | 2021-05-06 | Oppo广东移动通信有限公司 | Wireless communication method and terminal device |
| EP3883328B1 (en) * | 2020-03-18 | 2022-04-20 | ASUSTek Computer Inc. | Method and apparatus to perform a procedure for updating layer-2 identities |
| US20210400746A1 (en) * | 2020-06-18 | 2021-12-23 | Asustek Computer Inc. | Method and apparatus for a user equipment (ue) to transmit a direct communication request message in a wireless communication system |
| CN113825204A (en) * | 2020-06-18 | 2021-12-21 | 华硕电脑股份有限公司 | Method and apparatus for performing PC5 unicast link establishment procedure in wireless communication system |
| CN114640723B (en) * | 2020-11-30 | 2024-06-11 | 上海朗帛通信技术有限公司 | Method and apparatus for wireless communication |
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