CN106572514A - Method for selecting relay UE in D2D communication - Google Patents
Method for selecting relay UE in D2D communication Download PDFInfo
- Publication number
- CN106572514A CN106572514A CN201510648693.XA CN201510648693A CN106572514A CN 106572514 A CN106572514 A CN 106572514A CN 201510648693 A CN201510648693 A CN 201510648693A CN 106572514 A CN106572514 A CN 106572514A
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- CN
- China
- Prior art keywords
- relay
- signal
- relaying
- signal quality
- candidate relay
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
- H04W40/12—Communication route or path selection, e.g. power-based or shortest path routing based on transmission quality or channel quality
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
- H04W40/22—Communication route or path selection, e.g. power-based or shortest path routing using selective relaying for reaching a BTS [Base Transceiver Station] or an access point
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention provides a method for selecting relay UE in D2D communication. The method comprises the following steps of through a discovery signal sent by the relay UE, acquiring relay UE information; selecting the relay UE satisfying an access demand and measuring signal quality of the discovery signal; selecting the relay UE whose signal quality is greater than a threshold 1as candidate relay UE; sorting the signal quality of the discovery signals of the candidate relay UE; and selecting the candidate relay UE whose sort is risen fastest and whose signal quality belongs to a first N rank as target relay UE, or selecting the candidate relay UE with the best signal quality as the target relay UE. In the invention, the relay UE can be reasonably selected and a ping-pong effect can be avoided during relay UE selection.
Description
Technical field
The present invention relates to select the side of relaying UE in wireless communication field, more particularly to a kind of D2D communications
Method.
Background technology
With the development of wireless mobile telecommunication technology, people propose more to two-forty, low latency, low cost
Carry out higher requirement.LTE (Long Term Evolution) project is just generated in this context,
The higher peak rate of pursuit and shorter propagation delay time.
IMT-A systems allow to support Device-to-Device (D2D) communications to carry under community cellular network
High spectrum utilization.Device-to-Device (D2D) communications are a kind of under the control of system, it is allowed to terminal
Between the new technique that directly communicated by reuse pattern resource, it can increase cellular communication system frequency
Spectrum efficiency, reduces terminal transmission power, and wireless communication system frequency spectrum resource scarcity is solved to a certain extent
Problem.The typical case of D2D applies includes that D2D communications and D2D have found.In R13, D2D application extensions are arrived
Support in net that UE serves as to be relayed to net outer UE to use.It is related to distal end UE (Remote UE) in this application
How to select suitably to relay UE (Relay UE).In prior art, with regard to distal end UE (Remote UE)
How to select suitably to relay UE (Relay UE) also without clear and definite scheme.
The content of the invention
For the problems referred to above, the present invention proposes a kind of method that relaying UE is selected in D2D communications, including：
By relaying the UE information that relay described in the discovery signal acquisition that UE sends；
Selection meets the relaying UE of access demand, measures its signal quality for finding signal；
Select the signal quality more than thresholding 1 as candidate relay UE；
The signal quality of the discovery signal of candidate relay UE is ranked up；
Select in time t1, sequence rises most candidate relay UE conduct of the fast and signal quality in front N
Object relay UE, or top-quality candidate relay UE of selection signal is used as object relay UE.
Further, also include：In relaying UE gravity treatments, select to be better than than former relaying UE signal qualitys
Candidate relay UE of thresholding 2 and duration t2 is used as new object relay UE.
Further, the signal quality includes the receiving power and/or signal matter of the signal on PC5 interfaces
Amount.
Further, the foundation of the sequence is the receiving power of the signal on PC5 interfaces, on selected and sorted
Candidate relay UE that most fast and receiving power is risen in front N is used as object relay UE, or selects to receive work(
Maximum candidate relay UE of rate is used as object relay UE.
Further, it is described to find to carry the relaying UE information for sending the discovery signal in signal, including：
PLMN list, TAC of place Serving cell and mobile status information.
Further, PLMN list, TAC of the Serving cell that candidate relay UE sends and movement
Status information meets the access demand of distal end UE.
Further, the thresholding 1, thresholding 2, time t1, time t2 and N be by pre-configured acquisition,
Obtained by former relaying UE, and/or obtained by serving BS.
The present invention proposes how distal end UE in D2D (Remote UE) selects suitably to relay UE (Relay
UE method), reaches reasonable selection relaying UE purposes, and avoids relaying UE from selecting ping-pong occur.
Specific embodiment
To make purpose, technical scheme and the advantage of the embodiment of the present invention clearer, below will be to of the invention real
The technical scheme applied in example is clearly and completely described, it is clear that described embodiment is the present invention one
Section Example, rather than the embodiment of whole.
One embodiment of the present of invention proposes a kind of method that relaying UE is selected in D2D communications, including：
By relaying the UE information that relay described in the discovery signal acquisition that UE sends；Selection meets access demand
Relaying UE, measure its find signal signal quality；The signal quality is selected more than the work of thresholding 1
For candidate relay UE；The signal quality of the discovery signal of candidate relay UE is ranked up；Select
In time t1, sequence rises candidate relay UE of the most fast and signal quality in front N as object relay
UE, or top-quality candidate relay UE of selection signal is used as object relay UE.
In one alternate embodiment, also include：In relaying UE gravity treatments, select than former relaying UE letters
Number quality is better than candidate relay UE of thresholding 2 and duration t2 as new object relay UE.
In one alternate embodiment, the signal quality include PC5 interfaces on signal receiving power and
/ or signal quality.
In one alternate embodiment, the foundation of the sequence is the receiving power of the signal on PC5 interfaces,
Selected and sorted rises candidate relay UE of the most fast and receiving power in front N as object relay UE, or
Maximum candidate relay UE of receiving power is selected as object relay UE.
In one alternate embodiment, it is described to find to carry the relaying UE for sending the discovery signal in signal
Information, including：PLMN list, TAC of place Serving cell and mobile status information.
In one alternate embodiment, the PLMN list of the Serving cell that candidate relay UE sends,
TAC and mobile status information meet the access demand of distal end UE.
In one alternate embodiment, the thresholding 1, thresholding 2, time t1, time t2 and N are by pre-
Configuration is obtained, and is obtained by former relaying UE, and/or is obtained by serving BS.
The above embodiment of the present invention gives how distal end UE in D2D (Remote UE) selects properly
Relaying UE (Relay UE) method, reach reasonable selection relaying UE purposes, and avoid relay UE choosing
Select and ping-pong occur.
Embodiment：
UE is relayed first to authorize and determine to serve as after relaying, is sent and is found signal, and take in signal is found
PLMN list, TAC with oneself place Serving cell, and the mobile status information mobility state of oneself
Etc. information.
Distal end UE is if it is determined that oneself need to find a relaying UE, then distal end UE is obtained by discovery information
The information of relaying UE is taken, the relaying for being adapted to oneself use then is selected by these information, and measure these
Signal quality on the signal quality of relaying, i.e. PC5 interfaces, the signal quality is included on PC5 interfaces
Signal receiving power and signal quality.The relaying is regarded as when the two is more than certain thresholding m may
Become candidate relay UE of distal end UE, sort according to the receiving power of candidate relay UE.
Method 1：Select in stipulated time t, sequence rises relaying UE of the most fast and receiving power for top n
For the object relay UE for selecting.
Method 2：Maximum candidate relay UE of receiving power is selected to be object relay UE.
If Relay UE gravity treatments, then select to be better than than former relaying UE signal qualitys in candidate relay UE
Certain thresholding x, and persistently specify the relaying UE of time span y.
Wherein, above-mentioned parameter m, n for referring to, t, x, y can pass through pre-configured, or by former relaying
Obtain.Or obtained by serving BS.
Finally it should be noted that：Above example is only illustrating technical scheme, rather than it is limited
System；Although being described in detail to the present invention with reference to the foregoing embodiments, one of ordinary skill in the art
It should be understood that：It still can modify to the technical scheme described in foregoing embodiments, or to it
Middle some technical characteristics carry out equivalent；And these modifications or replacement, do not make appropriate technical solution
Essence departs from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (7)
1. a kind of method that relaying UE is selected in D2D communications, it is characterised in that include：
By relaying the UE information that relay described in the discovery signal acquisition that UE sends；
Selection meets the relaying UE of access demand, measures its signal quality for finding signal；
Select the signal quality more than thresholding 1 as candidate relay UE；
The signal quality of the discovery signal of candidate relay UE is ranked up；
Select in time t1, sequence rises most candidate relay UE conduct of the fast and signal quality in front N
Object relay UE, or top-quality candidate relay UE of selection signal is used as object relay UE.
2. method according to claim 1, it is characterised in that also include：In relaying UE gravity treatments
In, select the candidate relay UE conduct for being better than thresholding 2 and duration t2 than former relaying UE signal qualitys
New object relay UE.
3. method according to claim 1 and 2, it is characterised in that the signal quality includes PC5
The receiving power and/or signal quality of the signal on interface.
4. method according to claim 3, it is characterised in that the foundation of the sequence connects for PC5
The receiving power of the signal on mouth, selected and sorted rises most candidate relay UE of the fast and receiving power in front N
As object relay UE, or maximum candidate relay UE of receiving power is selected as object relay UE.
5. method according to claim 1, it is characterised in that carry in the discovery signal and send
The relaying UE information for finding signal, including：PLMN list, TAC of place Serving cell and shifting
Dynamic status information.
6. method according to claim 5, it is characterised in that what candidate relay UE sent
PLMN list, TAC of Serving cell and mobile status information meet the access demand of distal end UE.
7. the method according to claim 1～6 any one, it is characterised in that the thresholding 1,
Thresholding 2, time t1, time t2 and N are obtained by pre-configured acquisition by former relaying UE, and/or
Obtained by serving BS.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510648693.XA CN106572514A (en) | 2015-10-09 | 2015-10-09 | Method for selecting relay UE in D2D communication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510648693.XA CN106572514A (en) | 2015-10-09 | 2015-10-09 | Method for selecting relay UE in D2D communication |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106572514A true CN106572514A (en) | 2017-04-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201510648693.XA Withdrawn CN106572514A (en) | 2015-10-09 | 2015-10-09 | Method for selecting relay UE in D2D communication |
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| CN (1) | CN106572514A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110519724A (en) * | 2019-08-27 | 2019-11-29 | 深圳成谷科技有限公司 | A kind of method and apparatus improving PC5 interface communication quality |
| WO2021031896A1 (en) * | 2019-08-16 | 2021-02-25 | 展讯通信（上海）有限公司 | Relay selection method and device for sidelink, storage medium and terminal |
| WO2021190516A1 (en) * | 2020-03-23 | 2021-09-30 | 维沃移动通信有限公司 | Relay ue determination method and device |
| WO2022032594A1 (en) * | 2020-08-13 | 2022-02-17 | Oppo广东移动通信有限公司 | Relay communication method and device |
| WO2022116842A1 (en) * | 2020-12-03 | 2022-06-09 | 大唐移动通信设备有限公司 | Message notification method and apparatus, terminal device, relay device, and storage medium |
| WO2022151926A1 (en) * | 2021-01-18 | 2022-07-21 | 大唐移动通信设备有限公司 | Method and apparatus for selecting target relay terminal, and network device and terminal |
| WO2023010400A1 (en) * | 2021-08-05 | 2023-02-09 | 北京小米移动软件有限公司 | Relay user equipment handover method and apparatus, and device and readable storage medium |
| WO2024007173A1 (en) * | 2022-07-05 | 2024-01-11 | 北京小米移动软件有限公司 | Information processing method and apparatus, communication device, and storage medium |
-
2015
- 2015-10-09 CN CN201510648693.XA patent/CN106572514A/en not_active Withdrawn
Non-Patent Citations (1)
| Title |
|---|
| ERICSSON: "Signalling required for UE-NW relay selection", 《3GPP TSG-RAN WG2 #90》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021031896A1 (en) * | 2019-08-16 | 2021-02-25 | 展讯通信（上海）有限公司 | Relay selection method and device for sidelink, storage medium and terminal |
| CN110519724A (en) * | 2019-08-27 | 2019-11-29 | 深圳成谷科技有限公司 | A kind of method and apparatus improving PC5 interface communication quality |
| WO2021190516A1 (en) * | 2020-03-23 | 2021-09-30 | 维沃移动通信有限公司 | Relay ue determination method and device |
| WO2022032594A1 (en) * | 2020-08-13 | 2022-02-17 | Oppo广东移动通信有限公司 | Relay communication method and device |
| WO2022116842A1 (en) * | 2020-12-03 | 2022-06-09 | 大唐移动通信设备有限公司 | Message notification method and apparatus, terminal device, relay device, and storage medium |
| WO2022151926A1 (en) * | 2021-01-18 | 2022-07-21 | 大唐移动通信设备有限公司 | Method and apparatus for selecting target relay terminal, and network device and terminal |
| WO2023010400A1 (en) * | 2021-08-05 | 2023-02-09 | 北京小米移动软件有限公司 | Relay user equipment handover method and apparatus, and device and readable storage medium |
| WO2024007173A1 (en) * | 2022-07-05 | 2024-01-11 | 北京小米移动软件有限公司 | Information processing method and apparatus, communication device, and storage medium |
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20170419 |
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