CN105992348B - Resource allocation methods, user equipment based on D2D communication - Google Patents
Resource allocation methods, user equipment based on D2D communication Download PDFInfo
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- CN105992348B CN105992348B CN201510047609.9A CN201510047609A CN105992348B CN 105992348 B CN105992348 B CN 105992348B CN 201510047609 A CN201510047609 A CN 201510047609A CN 105992348 B CN105992348 B CN 105992348B
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Abstract
The present invention provides a kind of resource allocation methods based on D2D communication, user equipment, and wherein method includes: the signal that the first user equipment (UE) receives the side link synchronization sequence SLSS that the 2nd UE is sent；First UE determines the signal reception power RSRP of the SLSS of the 2nd UE received according to the signal of the 2nd UE SLSS sent；First UE is by the RSRP compared with the parameter value that itself is pre-configured；If the RSRP is higher than the parameter value itself being pre-configured, using the 2nd UE as first order central synchronous source；First UE receives the first resource that the 2nd UE distributes to the first UE, and sends resource pool assignment response to the 2nd UE；First UE carries out device-to-device D2D communication according to the first resource and the 2nd UE.The resource allocation methods based on D2D communication, the user equipment provided through the invention, can be improved the efficiency of transmission, the accurate safe transmission of data is effectively ensured, and meet the needs of D2D communication.
Description
Technical field
The present invention relates to field of communication technology more particularly to a kind of resource allocation methods based on D2D communication, Yong Hushe
It is standby.
Background technique
Device-to-device (Device-to-Device, abbreviation D2D) communication, which refers to, utilizes the direct-connected flow between adjacent node
Channel unloads the flow of base station, control typically as the supplement of cellular network communication, by cellular wireless network.?
In existing long term evolution (Long Term Evolution, abbreviation LTE) system, two user equipment (User
Equipment, abbreviation UE) the data transmission between UE realized by the relaying of network side.Transmitting terminal UE first has to
Communication data is sent to network side, the communication data is transmitted to the UE of receiving end by network side relaying again later.Even if two
Want to be communicated apart from close UE, these communication datas also will can just be sent to other side by the transmitting of network side.D2D skill
The occasion that art is closer primarily directed to transmitting terminal UE and receiving end UE can directly transmit communication number between two UE at this time
According to, and the relaying of network side is no longer needed to be forwarded data.D2D technology can reduce the load of network side, because of two UE
It is closer, the transmission power of UE can be effectively reduced to realize energy saving purpose.
D2D communication resource distribution mode is mainly by two kinds in the prior art: first way is that the resource of D2D discovery is logical
It crosses proprietary signaling and is assigned exclusively to UE；The second way is that network side is relayed to the shared resource pool of all UE distribution, and UE is certainly
Main selects resource from shared resource pool, to carry out the transmission of data.It is located at the relaying covering of network side in UE equipment
Except when, the second way can only be selected, UE is selected in the autonomous common pool from pre-configuration using the resource being pre-configured
Resource, to carry out the transmission of data.
In only one radio frequency link of UE, if some UE is transmitting communication data, which cannot receive this
Data, therefore when another UE carries out transmission data to this UE, it will lead to the loss of data, so as to cause user's discovery
The conflict that resource uses is not able to satisfy the demand of transmission.
Summary of the invention
For the defects in the prior art, the present invention provide it is a kind of based on D2D communication resource allocation methods, Yong Hushe
It is standby, it can be improved the efficiency of transmission, the accurate safe transmission of data be effectively ensured, meet the needs of D2D communication.
In a first aspect, the present invention provides a kind of resource allocation methods based on D2D communication, comprising:
First user equipment (UE) receives the signal for the side link synchronization sequence SLSS that the 2nd UE is sent；
First UE determines the SLSS of the 2nd UE received according to the signal of the 2nd UE SLSS sent
Signal reception power RSRP；
First UE is by the RSRP compared with the parameter value that itself is pre-configured；
If the RSRP is higher than the parameter value itself being pre-configured, using the 2nd UE as first order central synchronous
Source；
First UE receives the first resource that the 2nd UE distributes to the first UE, and sends to the 2nd UE
Resource pool assignment response；
First UE carries out device-to-device D2D communication according to the first resource and the 2nd UE.
Further, the first UE is by the RSRP compared with the parameter value that itself is pre-configured, further includes:
If the parameter value of pre-configuration of the RSRP lower than the first UE, using the first UE as first order center
Synchronisation source；
First UE distributes Secondary resource to the 2nd UE, and the Secondary resource of distribution is sent described second
UE, and another resource pool assignment response that the 2nd UE is sent according to the Secondary resource is received, according to second money
Source and the 2nd UE carry out D2D communication.
Further, the first UE carries out device-to-device D2D communication according to the first resource and the 2nd UE
Before, the method also includes:
First UE judges whether the received first resource is greater than the resource of demand, if the first resource is greater than
The resource of the demand, then the first UE sends the resource pool point carried for reducing the first resource to the 2nd UE
With the resource pool assignment response for reducing request, so that the 2nd UE is distributed according to the resource pool reduces request again to first
UE distributes resource；
If the first resource is less than the resource of the demand, the first UE sends to the 2nd UE and carries for increasing
The resource pool distribution of first resource increases the resource pool assignment response of request, so that the 2nd UE is distributed according to the resource pool
Increase request and distributes resource to the first UE again.
Further, the method also includes:
First UE receives the signal of the SLSS of the 2nd UE and the signal of the SLSS that forwards the 2nd UE, so that
3rd UE receives the signal of the SLSS of the 2nd UE and determines another RSRP of the signal of the SLSS, so that the 3rd UE
By another RSRP compared with the parameter value that the 3rd UE itself is pre-configured, if another RSRP is greater than the 3rd UE
The parameter value itself being pre-configured is then using the first UE as second level central synchronous source；
First UE obtains information resources from first resource, and the information resources are sent the 3rd UE, and
Receive the resource pool assignment response that the 3rd UE is sent to the first UE；
First UE carries out D2D communication according to the information resources and the 3rd UE.
Further, before the first UE carries out D2D communication steps according to the information resources and the 3rd UE,
Further include:
First UE receives the carrying of the 3rd UE transmission for reducing another resource allocation of the information resources
The resource pool assignment response of request readjusts the information resources to be allocated according to another resource pool distribution request,
Information resources adjusted are retransmitted to the 3rd UE；
First UE receives the carrying of the 3rd UE transmission for increasing another resource allocation of the information resources
The resource pool assignment response of request, the few information of the resource that the first UE feeds back the first UE to the 2nd UE, so that
The resource of the 2nd UE distribution can satisfy the first UE and distribute to the 3rd UE.
Second aspect, the present invention provides a kind of user equipmenies, comprising:
Receiving unit, the signal of the side link synchronization sequence SLSS for receiving the 2nd UE transmission；
Determination unit, the signal of the SLSS for being sent according to the 2nd UE determine the 2nd UE's received
The signal reception power RSRP of SLSS；
Comparing unit, for by the RSRP compared with the parameter value that itself is pre-configured；
Configuration unit, if making the 2nd UE for the RSRP to be higher than the parameter value itself being pre-configured
For first order central synchronous source；
Allocation unit receives the first resource that the 2nd UE distributes to user equipment, and sends and provide to the 2nd UE
Source pond assignment response；
Communication unit, for carrying out D2D communication according to the first resource and the 2nd UE.
Further, the configuration unit, if being also used to the parameter value of pre-configuration of the RSRP lower than user equipment,
Using user equipment as first order central synchronous source；
The allocation unit is also used to distribute Secondary resource to the 2nd UE, and the Secondary resource of distribution is sent out
The 2nd UE is sent, and receives another resource pool assignment response that the 2nd UE is sent according to the Secondary resource, according to
The Secondary resource and the 2nd UE carry out D2D communication.
Further, the allocation unit, is also used to judge whether the received first resource is greater than the resource of demand,
If the first resource is greater than the resource of the demand, user equipment sends to the 2nd UE and carries for reducing described the
The resource pool distribution of one resource reduces the resource pool assignment response of request, so that the 2nd UE subtracts according to resource pool distribution
Few request distributes resource to user equipment again；
If the first resource is less than the resource of the demand, user equipment sends to the 2nd UE and carries for increasing by the
The resource pool distribution of one resource increases the resource pool assignment response of request, increases so that the 2nd UE is distributed according to the resource pool
Request is added to distribute resource to user equipment again.
Further, the receiving unit is also used to receive the signal of the SLSS of the 2nd UE and forwards described second
The signal of the SLSS of UE, so that the 3rd UE receives the signal of the SLSS of the 2nd UE and determines the another of the signal of the SLSS
RSRP so that the 3rd UE by another RSRP compared with the parameter value that the 3rd UE itself is pre-configured, if described another
One RSRP is greater than the parameter value of the 3rd UE itself pre-configuration then using the user equipment as second level central synchronous source；
The allocation unit is also used to the user equipment and obtains information resources from first resource, and by the third
Resource sends the 3rd UE, and receives the resource pool assignment response that the 3rd UE is sent to the user equipment；
The communication unit is also used to carry out D2D communication according to the information resources and the 3rd UE.
Further, the receiving unit is also used to receive the carrying that the 3rd UE is sent and is used to reduce the third
The resource pool assignment response of another resource allocation request of resource；
The allocation unit is also used to readjust the third to be allocated according to another resource pool distribution request
Resource, the 3rd UE of Xiang Suoshu retransmit information resources adjusted；
The receiving unit is also used to receive the carrying of the 3rd UE transmission for increasing the another of the information resources
The resource pool assignment response of resource allocation request, the resource that the user equipment feeds back the user equipment to the 2nd UE are few
Information so that the resource of the 2nd UE distribution can satisfy the user equipment and distribute to the 3rd UE.
As shown from the above technical solution, the resource allocation methods based on D2D communication, the Yong Hushe provided through the invention
Standby, wherein method includes: the signal that the first user equipment (UE) receives the side link synchronization sequence SLSS that the 2nd UE is sent；It is described
First UE determines the signal reception function of the SLSS of the 2nd UE received according to the signal of the 2nd UE SLSS sent
Rate RSRP；First UE is by the RSRP compared with the parameter value that itself is pre-configured；If the RSRP is higher than, described itself is pre-
The parameter value of configuration, then using the 2nd UE as first order central synchronous source；First UE receives the 2nd UE distribution
Resource pool assignment response is sent to the first resource of the first UE, and to the 2nd UE；First UE is according to described
One resource and the 2nd UE carry out device-to-device D2D communication.The resource allocation based on D2D communication provided through the invention
Method, user equipment can be improved the efficiency of transmission, and the accurate safe transmission of data is effectively ensured, and meet the need of D2D communication
It asks.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below to embodiment or existing
Attached drawing needed in technical description is briefly described, it should be apparent that, the accompanying drawings in the following description is only this hair
Bright some embodiments for those of ordinary skill in the art without creative efforts, can be with root
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is a kind of flow diagram of resource allocation methods based on D2D communication provided in an embodiment of the present invention；
Fig. 2 is the flow diagram of another resource allocation methods based on D2D communication provided in an embodiment of the present invention；
Fig. 3 is a kind of information flow chart of resource allocation methods based on D2D communication provided in an embodiment of the present invention；
Fig. 4 is the information flow chart of another resource allocation methods based on D2D communication provided in an embodiment of the present invention；
Fig. 5 is a kind of structural schematic diagram of user equipment provided in an embodiment of the present invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, the technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is only
It is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiment of the present invention, ordinary skill people
Member's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
" first " in embodiment, " second ", " third " are not the only tables here to specific UE, the restriction of resource
Show difference, does not limit successive sequence.
Fig. 1 is a kind of flow diagram of resource allocation methods based on D2D communication provided in an embodiment of the present invention, is such as schemed
Shown in 1, the resource allocation methods based on D2D communication of the present embodiment are as described below.
101, the first user equipment (UE) receives the signal for the side link synchronization sequence SLSS that the 2nd UE is sent.
It should be understood that the 2nd sending side UE side chain road synchronizing sequence (Side Link Synchronous Sequence,
Abbreviation SLSS) signal, the first UE search for and find the 2nd UE broadcast synchronization source signal, then the first UE receive the 2nd UE send
SLSS signal.
It will also be appreciated that each user equipment can broadcast a SLSS signal, other users equipment be can receive
And detect the SLSS.
102, the first UE determines the 2nd UE's received according to the signal of the 2nd UE SLSS sent
The signal reception power RSRP of SLSS.
It should be understood that the first UE detects the SLSS of the 2nd UE broadcast transmission, while according to the letter of the SLSS received
Signal reception power (the Reference Signal Receiving of the SLSS for the 2nd UE that number determination receives
Power, abbreviation RSRP).
103, the first UE is by the RSRP compared with the parameter value that itself is pre-configured.
It should be understood that each UE preconfiguration parameters value is indicated with parameter syncTxThreshOoC parameter.
First UE is compared according to determining RSRP with the first UE itself parameter value being pre-configured.
If 104, the RSRP is higher than the parameter value itself being pre-configured, using the 2nd UE as first order center
Synchronisation source.
It should be understood that after the first UE is compared, if RSRP is higher than the parameter value that the first UE is pre-configured, by second
UE is as first order central synchronous source.
If will also be appreciated that the parameter value of pre-configuration of the RSRP lower than the first UE, using the first UE as the first order
Central synchronous source.
105, the first UE receives the first resource that the 2nd UE distributes to the first UE, and to the 2nd UE
Send resource pool assignment response.
It should be understood that the first UE receives the first resource that the 2nd UE distributes to the first UE, and resource is sent to the 2nd UE
Pond assignment response.
It will also be appreciated that the first UE distributes Secondary resource to the 2nd UE, and the Secondary resource of distribution is sent second
UE, and receive another resource pool assignment response for sending according to Secondary resource of the 2nd UE, according to Secondary resource and the 2nd UE into
Row D2D communication.
106, the first UE carries out device-to-device D2D communication according to the first resource and the 2nd UE.
It should be understood that the first UE receives the first resource that the 2nd UE distributes to the first UE, and according to first received
Resource sends resource allocation response to the 2nd UE, and the first UE and the 2nd UE carry out D2D communication.
It will also be appreciated that the first UE distributes Secondary resource to the 2nd UE, and the Secondary resource of distribution is sent to the
Two UE, receive the resource pool assignment response that the 2nd UE is sent, and carry out D2D communication with the 2nd UE.
First resource and Secondary resource only distinguish, and do not limit successive sequence, and the first UE can be made to send out
Sending can guarantee that data can be received by the 2nd UE when message, while guarantee that data will not lose.
First UE can be communicated directly with the 2nd UE, carry out the forwarding and transmission of data, without passing through network side
Relaying carry out data forwarding.
The resource allocation methods based on D2D communication provided through this embodiment, can be improved the efficiency of transmission, effectively protect
The accurate safe transmission for demonstrate,proving data meets the needs of D2D communication.
Fig. 2 is the flow diagram of another resource allocation methods based on D2D communication provided in an embodiment of the present invention, such as
Shown in Fig. 2, the resource allocation methods based on D2D communication of the present embodiment are as described below.
201, the first user equipment (UE) receives the signal for the side link synchronization sequence SLSS that the 2nd UE is sent.
It should be understood that the 2nd UE sends the signal of SLSS, the first UE is searched for and is found the synchronisation source letter of the 2nd UE broadcast
Number, then the first UE receives the signal for the SLSS that the 2nd UE is sent.
Each user equipment can broadcast a SLSS signal, and other users equipment can receive and detect the SLSS.
202, the first UE determines the 2nd UE's received according to the signal of the 2nd UE SLSS sent
The signal reception power RSRP of SLSS.
It should be understood that the first UE detects the SLSS of the 2nd UE broadcast transmission, while according to the letter of the SLSS received
The RSRP of the SLSS for the 2nd UE that number determination receives.
203, the first UE is by the RSRP compared with the parameter value that itself is pre-configured.
It should be understood that each UE preconfiguration parameters value is indicated with parameter syncTxThreshOoC parameter.
First UE is compared according to determining RSRP with the first UE itself parameter value being pre-configured.
If 204, the RSRP is higher than the parameter value itself being pre-configured, using the 2nd UE as first order center
Synchronisation source.
It should be understood that after the first UE is compared, if RSRP is higher than the parameter value that the first UE is pre-configured, by second
UE is as first order central synchronous source.
If will also be appreciated that the parameter value of pre-configuration of the RSRP lower than the first UE, using the first UE as the first order
Central synchronous source.
205, the first UE receives the first resource that the 2nd UE distributes to the first UE, and to the 2nd UE
Send resource pool assignment response.
It should be understood that the first UE receives the first resource that the 2nd UE distributes to the first UE, and resource is sent to the 2nd UE
Pond assignment response.
It will also be appreciated that the first UE distributes Secondary resource to the 2nd UE, and the Secondary resource of distribution is sent second
UE, and receive another resource pool assignment response for sending according to Secondary resource of the 2nd UE, according to Secondary resource and the 2nd UE into
Row D2D communication.
206, the first UE judges whether the received first resource is greater than the resource of demand, if the first resource
Greater than the resource of the demand, then the first UE sends the resource carried for reducing the first resource to the 2nd UE
Pond distribution reduce request resource pool assignment response so that the 2nd UE according to the resource pool distribute reduce request again to
First UE distributes resource.
It should be understood that whether the first resource that the first UE judgement receives is greater than the resource of preset need, if received
The first resource arrived is greater than the resource of preset need, then the first UE sends to the 2nd UE and carries for reducing the first resource
Resource pool distribution reduces the resource pool assignment response of request, so that the 2nd UE is distributed according to resource pool reduces request again to first
UE distributes resource.
The resource of demand refers to the resource that can satisfy communication requirement, enables to data during transmission, data
It will not lose.
If 207, the first resource is less than the resource of the demand, the first UE sends to carry to the 2nd UE and be used for
The resource pool distribution for increasing first resource increases the resource pool assignment response of request, so that the 2nd UE is according to the resource pool
Distribution increases request and distributes resource to the first UE again.
If should be understood that, first resource is less than the resource of preset need, and the first UE sends to carry to the 2nd UE and be used for
The resource pool distribution for increasing first resource increases the resource pool assignment response of request, increases so that the 2nd UE is distributed according to resource pool
Request distributes resource to the first UE again.
It will also be appreciated that the 2nd UE distributes increase for increasing the resource pool of first resource according to the carrying received
The resource pool assignment response of request is to distribute resource to the first UE again.
208, the first UE carries out device-to-device D2D communication according to the first resource and the 2nd UE.
It should be understood that the first UE receives the first resource that the 2nd UE distributes to the first UE, and according to first received
Resource sends resource allocation response to the 2nd UE, and the first UE and the 2nd UE carry out D2D communication.
It will also be appreciated that the first UE distributes Secondary resource to the 2nd UE, and the Secondary resource of distribution is sent to the
Two UE, receive the resource pool assignment response that the 2nd UE is sent, and carry out D2D communication with the 2nd UE.
First resource and Secondary resource only distinguish, and do not limit successive sequence, and the first UE can be made to send out
Sending can guarantee that data can be received by the 2nd UE when message, while guarantee that data will not lose.
First UE can be communicated directly with the 2nd UE, carry out the forwarding and transmission of data, without passing through network side
Relaying carry out data forwarding.
The resource allocation methods based on D2D communication provided through this embodiment, can be improved the efficiency of transmission, effectively protect
The accurate safe transmission for demonstrate,proving data meets the needs of D2D communication.
Fig. 3 is the flow diagram of another resource allocation methods based on D2D communication provided in an embodiment of the present invention, such as
Shown in Fig. 3, the resource allocation methods based on D2D communication of the present embodiment are as described below.
301, the first UE receives the signal of the SLSS of the 2nd UE and the signal of the SLSS that forwards the 2nd UE,
So that the 3rd UE receives the signal of the SLSS of the 2nd UE and determines another RSRP of the signal of the SLSS, so that described the
Three UE by another RSRP compared with the parameter value that the 3rd UE itself is pre-configured, if another RSRP is greater than described the
The parameter value that three UE itself are pre-configured is then using the first UE as second level central synchronous source.
It should be understood that the first UE receives the signal of the SLSS of the 2nd UE and forwards the signal of the SLSS of the 2nd UE, so that
3rd UE receives the signal of the SLSS of the 2nd UE and determines another RSRP of the signal of SLSS, so that the 3rd UE will be described another
RSRP, will if another RSRP is greater than the parameter value that the 3rd UE itself is pre-configured compared with the parameter value that the 3rd UE itself is pre-configured
First UE is as second level central synchronous source.
It will also be appreciated that the first UE receives another SLSS signal that the 3rd UE is sent, determines and receive another SLSS letter
Number another RSRP.
It should be understood that first order central synchronous source, second level central synchronous source are not the specific layer of restriction carried out
Grade refers to that first order central synchronous source is second level central synchronous source upper level central synchronous source,
302, the first UE obtains information resources from first resource, and the information resources are sent the third
UE, and receive the resource pool assignment response that the 3rd UE is sent to the first UE.
It should be understood that the first UE obtains information resources from first resource, and information resources are sent into the 3rd UE, and connect
Receive the resource pool assignment response that the 3rd UE is sent to the first UE.
It will also be appreciated that the first UE by another RSRP compared with the parameter value that the first UE itself is pre-configured, if another
RSRP is higher than the first parameter value itself being pre-configured, then using the first UE as second level central synchronous source.
303, the first UE carries out D2D communication according to the information resources and the 3rd UE.
It should be understood that the first UE distributes information resources to the 3rd UE, and information resources are sent the 3rd UE, and receive the
The resource pool assignment response that three UE are sent to the first UE carries out D2D communication according to information resources and the 3rd UE.
It is asked it is understood that the first UE receives another resource allocation for reducing information resources that the 3rd UE is sent
It asks, information resources to be allocated is readjusted according to another resource pool distribution request, retransmit adjusted the to the 3rd UE
Three resources.
First UE receive that the 3rd UE sends for increasing another resource allocation requests of information resources, the first UE is to second
The few information of the resource of the first UE of UE feedback, so that the resource of the 2nd UE distribution can satisfy the first UE to the 3rd UE points
Match.
The resource allocation methods based on D2D communication provided through this embodiment, can be improved the efficiency of transmission, effectively protect
The accurate safe transmission for demonstrate,proving data meets the needs of D2D communication.
Fig. 4 is a kind of information flow chart of resource allocation methods based on D2D communication provided in an embodiment of the present invention, is such as schemed
Shown in 4, the resource allocation methods in D2D communication of the present embodiment are as described below.
Firstly, the selection method based on synchronisation source UE, determines the 2nd UE of first order center.After synchronization, all UE into
The method of row discovery procedure, i.e. the 4th UE find that the 2nd UE, the 2nd UE have found that the 4th UE and the first UE, the first UE have found the 2nd UE
The first UE is found with the 3rd UE, the 3rd UE.
Secondly, the 2nd UE directly distributes resource pool to the 4th UE, for the first UE, the 2nd UE distribution money for the 4th UE
The first UE is given in source pond, but since there are also the 3rd UE, the first UE to distribute the resource pool that the 2nd UE is distributed under the first UE
Afterwards, continue to distribute resource pool to the 3rd UE, to guarantee that the transmission of resource will not conflict.
Again, due to being also connected with the 3rd UE behind the first UE, then the first UE is possible to will be considered that the money of the 2nd UE distribution
Source is not enough, therefore does not have to distribute resource to the 3rd UE, and the resource pool size directly suggested to the 2nd UE feedback is more to obtain
Resource.
Finally, if the 4th UE thinks that resource is excessive, because the 4th UE, there is no low level UE, the 4th UE, which can be sent, to disappear
It ceases to the 2nd UE, the 2nd UE is allowed to subtract under absorbed resource.
The resource allocation methods based on D2D communication provided through this embodiment, can be improved the efficiency of transmission, effectively protect
The accurate safe transmission for demonstrate,proving data meets the needs of D2D communication.
Fig. 5 is a kind of structural schematic diagram of user equipment provided in an embodiment of the present invention, as shown in figure 5, the present embodiment
User equipment is as described below.
A kind of user equipment includes: receiving unit 51, determination unit 52, comparing unit 53, configuration unit 54, allocation unit
55, communication unit 56.
Receiving unit 51, the signal of the side link synchronization sequence SLSS for receiving the 2nd UE transmission.
Determination unit 52, the signal of the SLSS for being sent according to the 2nd UE determine the 2nd UE's received
The signal reception power RSRP of SLSS.
Comparing unit 53, for by the RSRP compared with the parameter value that itself is pre-configured.
Configuration unit 54, if for the RSRP to be higher than the parameter value itself being pre-configured, by the 2nd UE
As first order central synchronous source.
Allocation unit 55 receives the first resource that the 2nd UE distributes to user equipment, and sends to the 2nd UE
Resource pool assignment response.
Communication unit 56, for carrying out D2D communication according to the first resource and the 2nd UE.
Configuration unit 54, if the parameter value of pre-configuration of the RSRP lower than user equipment is also used to, by user equipment
As first order central synchronous source.
Allocation unit 55 is also used to distribute Secondary resource to the 2nd UE, and the Secondary resource of distribution is sent
2nd UE, and another resource pool assignment response that the 2nd UE is sent according to the Secondary resource is received, according to institute
It states Secondary resource and the 2nd UE carries out D2D communication.
Allocation unit 55, is also used to judge whether the received first resource is greater than the resource of demand, if described first
Resource is greater than the resource of the demand, then user equipment sends the money carried for reducing the first resource to the 2nd UE
The distribution of source pond reduces the resource pool assignment response of request, so that the 2nd UE is distributed according to the resource pool reduces request again
Resource is distributed to user equipment, if the first resource is less than the resource of the demand, user equipment is taken to the 2nd UE transmission
Band increases the resource pool assignment response of request for increasing the resource pool distribution of first resource, so that the 2nd UE is according to
Resource pool distribution increases request and distributes resource to user equipment again.
Receiving unit 51 is also used to receive the signal of the SLSS of the 2nd UE and the letter of the SLSS that forwards the 2nd UE
Number, so that the 3rd UE receives the signal of the SLSS of the 2nd UE and determines another RSRP of the signal of the SLSS, so that institute
The 3rd UE is stated by another RSRP compared with the parameter value that the 3rd UE itself is pre-configured, if another RSRP is greater than institute
The parameter value of the 3rd UE itself pre-configuration is stated then using the user equipment as second level central synchronous source.
Allocation unit 55 is also used to the user equipment and obtains information resources from first resource, and the third is provided
Source sends the 3rd UE, and receives the resource pool assignment response that the 3rd UE is sent to the user equipment.
Communication unit 56 is also used to carry out D2D communication according to the information resources and the 3rd UE.
Receiving unit 51 is also used to receive the carrying of the 3rd UE transmission for reducing another money of the information resources
The resource pool assignment response of source distribution request.
Allocation unit 55 is also used to readjust third money to be allocated according to another resource pool distribution request
Source, the 3rd UE of Xiang Suoshu retransmit information resources adjusted.
Receiving unit 51 is also used to receive the carrying of the 3rd UE transmission for increasing another money of the information resources
The resource pool assignment response of source distribution request, the resource that the user equipment feeds back the user equipment to the 2nd UE are few
Information, so that the resource of the 2nd UE distribution can satisfy the user equipment and distribute to the 3rd UE.
The user equipment provided through this embodiment can be improved the efficiency of transmission, and the accurate safety of data is effectively ensured
Transmission, meet D2D communication the needs of.
Those of ordinary skill in the art will appreciate that: realize that all or part of step of above method embodiment can lead to
The relevant hardware of program instruction is crossed to complete, program above-mentioned can store in computer-readable storage medium, the journey
Sequence when being executed, executes step including the steps of the foregoing method embodiments；And storage medium above-mentioned include: ROM, RAM, magnetic disk or
In the various media that can store program code such as CD.
The above description is merely a specific embodiment, and still, protection scope of the present invention is not limited to this, appoints
What those familiar with the art in the technical scope disclosed by the present invention, the variation or substitution that can be readily occurred in, all
It is covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with the scope of protection of the claims
Subject to.
Claims (10)
1. a kind of resource allocation methods based on D2D communication characterized by comprising
First user equipment (UE) receives the signal for the side link synchronization sequence SLSS that the 2nd UE is sent；
First UE determines the letter of the SLSS of the 2nd UE received according to the signal of the 2nd UE SLSS sent
Number receive power RSRP；
First UE is by the RSRP compared with the parameter value that itself is pre-configured；
If the RSRP is higher than the parameter value itself being pre-configured, using the 2nd UE as first order central synchronous source；
First UE receives the first resource that the 2nd UE distributes to the first UE, and sends resource to the 2nd UE
Pond assignment response；
First UE carries out device-to-device D2D communication according to the first resource and the 2nd UE.
2. the resource allocation methods according to claim 1 based on D2D communication, which is characterized in that the first UE is by institute
RSRP is stated compared with the parameter value that itself is pre-configured, further includes:
If the parameter value of pre-configuration of the RSRP lower than the first UE, using the first UE as first order central synchronous
Source；
First UE distributes Secondary resource to the 2nd UE, and the Secondary resource of distribution is sent the 2nd UE,
And receive another resource pool assignment response that the 2nd UE is sent according to the Secondary resource, according to the Secondary resource and
2nd UE carries out D2D communication.
3. it is according to claim 1 based on D2D communication resource allocation methods, which is characterized in that the first UE according to
Before the first resource and the 2nd UE carry out device-to-device D2D communication, the method also includes:
First UE judges whether the received first resource is greater than the resource of demand, if the first resource is greater than described
The resource of demand, then the first UE sends the resource pool distribution carried for reducing the first resource to the 2nd UE and subtracts
The resource pool assignment response requested less, so that the 2nd UE is distributed according to the resource pool reduces request again to the first UE points
With resource；
If the first resource is less than the resource of the demand, the first UE sends to the 2nd UE and carries for increasing by first
The resource pool distribution of resource increases the resource pool assignment response of request, increases so that the 2nd UE is distributed according to the resource pool
Request distributes resource to the first UE again.
4. the resource allocation methods according to claim 1 based on D2D communication, which is characterized in that the method also includes:
First UE receives the signal of the SLSS of the 2nd UE and the signal of the SLSS that forwards the 2nd UE, so that third
UE receives the signal of the SLSS of the 2nd UE and determines another RSRP of the signal of the SLSS, so that the 3rd UE is by institute
Another RSRP is stated compared with the parameter value that the 3rd UE itself is pre-configured, if another RSRP is greater than the 3rd UE itself
The parameter value of pre-configuration is then using the first UE as second level central synchronous source；
First UE obtains information resources from first resource, and the information resources is sent the 3rd UE, and receive
The resource pool assignment response that 3rd UE is sent to the first UE；
First UE carries out D2D communication according to the information resources and the 3rd UE.
5. the resource allocation methods according to claim 4 based on D2D communication, which is characterized in that in the first UE root
Before the information resources and the 3rd UE progress D2D communication steps, further includes:
First UE receives the carrying that the 3rd UE is sent and asks for reducing another resource pool distribution of the information resources
The resource pool assignment response asked readjusts the information resources to be allocated according to another resource pool distribution request, to
3rd UE retransmits information resources adjusted；
First UE receives the carrying that the 3rd UE is sent and asks for increasing another resource pool distribution of the information resources
The resource pool assignment response asked, the few information of the resource that the first UE feeds back the first UE to the 2nd UE, so that institute
The resource for stating the 2nd UE distribution can satisfy the first UE and distribute to the 3rd UE.
6. a kind of user equipment characterized by comprising
Receiving unit, the signal of the side link synchronization sequence SLSS for receiving the 2nd UE transmission；
Determination unit, the signal of the SLSS for being sent according to the 2nd UE determine the SLSS's of the 2nd UE received
Signal reception power RSRP；
Comparing unit, for by the RSRP compared with the parameter value that itself is pre-configured；
Configuration unit, if for the RSRP to be higher than the parameter value itself being pre-configured, using the 2nd UE as the
Primary centre synchronisation source；
Allocation unit receives the first resource that the 2nd UE distributes to user equipment, and sends resource pool to the 2nd UE
Assignment response；
Communication unit, for carrying out D2D communication according to the first resource and the 2nd UE.
7. user equipment according to claim 6, which is characterized in that the configuration unit, if it is low to be also used to the RSRP
In the parameter value of the pre-configuration of user equipment, then using user equipment as first order central synchronous source；
The allocation unit is also used to distribute Secondary resource to the 2nd UE, and the Secondary resource of distribution is sent institute
The 2nd UE is stated, and receives another resource pool assignment response that the 2nd UE is sent according to the Secondary resource, according to described
Secondary resource and the 2nd UE carry out D2D communication.
8. user equipment according to claim 6, which is characterized in that the allocation unit is also used to judge received institute
The resource whether first resource is greater than demand is stated, if the first resource is greater than the resource of the demand, user equipment is to institute
It states the 2nd UE and sends the resource pool assignment response for carrying the distribution reduction request of the resource pool for reducing the first resource, so that
2nd UE is distributed according to the resource pool reduces request again to user equipment distribution resource；
If the first resource is less than the resource of the demand, user equipment is sent to the 2nd UE to be carried for increasing by the first money
The resource pool distribution in source increases the resource pool assignment response of request, asks so that the 2nd UE increases according to resource pool distribution
It asks and distributes resource to user equipment again.
9. user equipment according to claim 6, which is characterized in that the receiving unit is also used to receive described second
The signal of the SLSS of UE and forward the 2nd UE SLSS signal so that the 3rd UE receives the letter of the SLSS of the 2nd UE
Number and determine the SLSS signal another RSRP so that the 3rd UE is by another RSRP and the 3rd UE itself
The parameter value of pre-configuration compares, by the user if another RSRP is greater than the parameter value that the 3rd UE itself is pre-configured
Equipment is as second level central synchronous source；
The allocation unit is also used to the user equipment and obtains information resources from first resource, and by the information resources
The 3rd UE is sent, and receives the resource pool assignment response that the 3rd UE is sent to the user equipment；
The communication unit is also used to carry out D2D communication according to the information resources and the 3rd UE.
10. user equipment according to claim 9, which is characterized in that the receiving unit is also used to receive the third
The resource pool assignment response of another resource pool distribution request of the carrying that UE is sent for reducing the information resources；
The allocation unit is also used to readjust third money to be allocated according to another resource pool distribution request
Source, the 3rd UE of Xiang Suoshu retransmit information resources adjusted；
The receiving unit is also used to receive the carrying of the 3rd UE transmission for increasing another resource of the information resources
The resource pool assignment response of pond distribution request, the resource that the user equipment feeds back the user equipment to the 2nd UE are few
Information, so that the resource of the 2nd UE distribution can satisfy the user equipment and distribute to the 3rd UE.
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| WO2018070845A1 (en) | 2016-10-13 | 2018-04-19 | 엘지전자 주식회사 | Sidelink synchronization signal transmission method performed by terminal in wireless communication system and terminal using same |
| CN108419295B (en) * | 2017-02-10 | 2022-01-14 | 华为技术有限公司 | Method for communication between terminals, network side equipment and terminal |
| CN108834107B (en) * | 2017-05-05 | 2020-12-18 | 上海诺基亚贝尔股份有限公司 | Method and apparatus for sidelink discovery |
| CN109392078B (en) | 2017-08-11 | 2021-11-02 | 中兴通讯股份有限公司 | Signal detection and transmission method and device, and remote user equipment |
| KR20200058528A (en) | 2017-09-28 | 2020-05-27 | 엘지전자 주식회사 | Method and apparatus for transmitting / receiving a synchronization signal on a plurality of component carriers in a wireless communication system |
| CN109451879B (en) * | 2017-11-17 | 2022-08-26 | 北京小米移动软件有限公司 | System information configuration and reading method and device, base station and user equipment |
| WO2020191763A1 (en) * | 2019-03-28 | 2020-10-01 | Oppo广东移动通信有限公司 | Radio link management method and related device |
| WO2022021244A1 (en) * | 2020-07-30 | 2022-02-03 | 华为技术有限公司 | Communication method and device |
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